An overview to PRINTING QUALITY MANAGEMENT in ZAMAN Newspaper
Prepared by: Muharrem Yaşar
Quality and Coord. Manager
15.10.2014 Wan-Ifra World Publishing Expo 2014 Amsterdam, The Netherlands
Screen printing uses stencils to transfer images onto surfaces through a fabric screen. The stencil blocks ink from passing through in some areas while allowing it in others to create the image. Carousel screen printing uses multiple screens on a rotating mechanism to print with different colors more quickly and efficiently. Screen printing is commonly used to apply graphics and logos to products. Photocopying uses a dry toner instead of liquid ink in a non-contact printing process, allowing images to be reproduced in different sizes. Gravure printing employs an engraved plate to hold ink which is applied to paper to create high-quality art and photography books. Offset lithography uses oil and gum to divide a smooth plate surface into ink-accepting and ink
Computer to plate (CTP) technology directly images printing plates using lasers rather than first exposing film. This eliminates film processing and improves image quality with less dot gain. CTP uses platesetters with flatbed, internal drum, or external drum designs to image plates. Common plate materials include aluminum and photopolymer plates. Thermal lasers and GLV technologies provide high-quality, high-speed imaging. CTP offers advantages like reduced time and errors, easier changes, and more efficient digital file storage compared to conventional film workflows. New advances are eliminating the plate entirely in some systems.
The document provides training on common print quality issues including pinholes caused by soft mounting tape, skipout from improper anilox/plate settings, halo from plate and ink impression issues, feathering and dot bridging from a dirty print, fill-in referring to small type and halftones, ink riders as unwanted material transferring ink, misregister when colors do not line up, and ghosting from issues with ink drying time or dryers. It lists the print quality issues, provides brief descriptions of each, and includes relevant images.
Colour management aims to standardize colour reproduction across different devices and stages of the printing workflow. It involves using colour profiles and colour spaces to translate colours between devices and map colours that fall outside a device's gamut. Paper plays a key role in colour management by influencing colour gamut, dot gain, and luminance. Standardized printing as defined in ISO 12647-2 specifies paper groups, CMYK and RGB colour targets, dot gain targets, and tolerances to help ensure colour consistency. Sappi provides services like prepress recommendations, colour management consultations, print quality evaluations, and trainings to help customers achieve high and consistent print quality.
Print quality is determined by several factors including color reproduction, detail reproduction, gloss, and defects. Color reproduction depends on paper properties, ink properties, dot gain, and trapping. Higher print densities and smoother paper surfaces allow for wider color gamuts. Ink demand is mainly controlled by paper roughness and porosity, with smoother papers requiring less ink. Dot gain increases halftone dot size and must be considered when choosing screen rulings. Trapping influences color gamut through secondary colors and depends on ink sequence and transfer properties. Gloss is influenced by paper coating and ink, though consumer perception of differences in gloss can vary.
The document discusses various problem cases that can occur in a printing pressroom, including electrostatic charge on paper, crease formation, picking, emulsification, ghosting, mottling, horizontal stripes, darkening, decreases or increases in tone value, slurring, and lags in drying time. For each issue, it provides details on potential causes and recommended remedies.
Screen printing uses stencils to transfer images onto surfaces through a fabric screen. The stencil blocks ink from passing through in some areas while allowing it in others to create the image. Carousel screen printing uses multiple screens on a rotating mechanism to print with different colors more quickly and efficiently. Screen printing is commonly used to apply graphics and logos to products. Photocopying uses a dry toner instead of liquid ink in a non-contact printing process, allowing images to be reproduced in different sizes. Gravure printing employs an engraved plate to hold ink which is applied to paper to create high-quality art and photography books. Offset lithography uses oil and gum to divide a smooth plate surface into ink-accepting and ink
Computer to plate (CTP) technology directly images printing plates using lasers rather than first exposing film. This eliminates film processing and improves image quality with less dot gain. CTP uses platesetters with flatbed, internal drum, or external drum designs to image plates. Common plate materials include aluminum and photopolymer plates. Thermal lasers and GLV technologies provide high-quality, high-speed imaging. CTP offers advantages like reduced time and errors, easier changes, and more efficient digital file storage compared to conventional film workflows. New advances are eliminating the plate entirely in some systems.
The document provides training on common print quality issues including pinholes caused by soft mounting tape, skipout from improper anilox/plate settings, halo from plate and ink impression issues, feathering and dot bridging from a dirty print, fill-in referring to small type and halftones, ink riders as unwanted material transferring ink, misregister when colors do not line up, and ghosting from issues with ink drying time or dryers. It lists the print quality issues, provides brief descriptions of each, and includes relevant images.
Colour management aims to standardize colour reproduction across different devices and stages of the printing workflow. It involves using colour profiles and colour spaces to translate colours between devices and map colours that fall outside a device's gamut. Paper plays a key role in colour management by influencing colour gamut, dot gain, and luminance. Standardized printing as defined in ISO 12647-2 specifies paper groups, CMYK and RGB colour targets, dot gain targets, and tolerances to help ensure colour consistency. Sappi provides services like prepress recommendations, colour management consultations, print quality evaluations, and trainings to help customers achieve high and consistent print quality.
Print quality is determined by several factors including color reproduction, detail reproduction, gloss, and defects. Color reproduction depends on paper properties, ink properties, dot gain, and trapping. Higher print densities and smoother paper surfaces allow for wider color gamuts. Ink demand is mainly controlled by paper roughness and porosity, with smoother papers requiring less ink. Dot gain increases halftone dot size and must be considered when choosing screen rulings. Trapping influences color gamut through secondary colors and depends on ink sequence and transfer properties. Gloss is influenced by paper coating and ink, though consumer perception of differences in gloss can vary.
The document discusses various problem cases that can occur in a printing pressroom, including electrostatic charge on paper, crease formation, picking, emulsification, ghosting, mottling, horizontal stripes, darkening, decreases or increases in tone value, slurring, and lags in drying time. For each issue, it provides details on potential causes and recommended remedies.
The document discusses the coating process used in paper production. Coating involves covering a paper surface with a pigment layer to enhance properties like visual appeal, ink absorption and smoothness. The key steps are: (1) preparing a water-based coating mixture of pigments, binders and additives; (2) applying the coating using methods like blade coating, curtain coating or size pressing; and (3) drying the coated paper using infrared heaters or airfoil dryers. Coating improves paper characteristics for printing or other end uses.
Basics of offset printing and other printing techniquesSappiHouston
The document provides an overview of different printing methods including offset printing and gravure. It discusses offset printing principles such as how printed and unprinted areas are achieved using the offset plate and fountain solution. Sheet-fed offset and heat-set web offset printing are described. Other conventional printing methods like gravure and flexography are also covered. The document concludes with a high-level summary of the various printing techniques.
Manufacturing of Printing Inks with Formulation (Flexographic Inks, Typograph...Ajjay Kumar Gupta
Manufacturing of Printing Inks with Formulation (Flexographic Inks, Typographic Printing Inks, Planographic Inks, Intaglio Printing Inks, Gravure Printing Inks, Special Inks, Offset Printing Inks, Ball Pen Inks, Fluorescent Inks, Phosphorescent Pigments, Silk-screen Fluorescent Printing, Inorganic Pigments)
Printing ink sector in India witnessed a growth of around 7.5% per annum during the Past years. Printed packaging accounts for around 27% of the demand for printing inks in India followed by newspapers at 20%. Commercial printing/promotional and printed advertising together account for around 19% of the demand. Other key end user segments for printing inks include books and stationery. With the print sector forecast to grow at around 8% per annum, in coming years, printing ink segment is expected to grow strongly.
See more
https://goo.gl/tG4l6B
https://goo.gl/TTuhMC
https://goo.gl/8hpMA3
Tags
Printing Inks with Formulae, Printing Inks with Processes, A Guide to Popular Printing Techniques, best small and cottage scale industries, formulation of printing inks, Gravure Printing industry, Growth in the Printing inks, How Ink Is Made, How Ink is manufactured, How printing ink manufactured in factory, how to manufacture ink, How to Start a Printing inks Production Business, How to start a successful Printing inks business, How to Start Printing inks Industry in India, Ink and Printability Testing, Inking Rollers, Inking Rollers uses, Manufacture of Inks and varnishes, manufacturing of varnish, Modern Printing Process, Most Profitable Printing inks manufacturing Business Ideas, new small scale ideas in inks manufacturing industry, Newspaper Printing Ink, Packaging Inks Market - Covering the Printing Inks, Coatings and Allied Industries, Printing inks Based Small Scale Industries Projects, Printing inks Business, Printing inks manufacturing Industry in India, Printing inks, manufacturing Projects, printing ink formulation, printing ink manual, Printing Ink Manufacturing, printing ink manufacturing process, Printing Ink Technology and Manufacture, Printing Inks & Applications, Printing Processes and Printing Inks, Profitable Small Scale inks Manufacturing, Robust Growth in the Indian Exports of Printing Inks, screen printing process, Setting up and opening your Printing inks Business, Setting up and opening your Printing Business, Small Scale Printing inks manufacturing Projects, Starting a Printing inks manufacturing Business, Starting a Printing Business, Starting an Offset Printing Press, Start-up Business Plan for Printing inks, Startup Project for Printing inks Business, offset printing ink manufacturing process, formulation of Offset Printing Inks, Ball Pen Inks, Fluorescent Inks, Phosphorescent Pigments, Silk-screen Fluorescent Printing, Inorganic Pigments, Offset printing technology, How printing ink manufactured in factory, offset printing ink formulation
This document provides an overview of color management and the color management workflow. It discusses the goals of color management which are to process digital images accurately from capture to final presentation. It then describes the color management workflow which involves profiling devices, setting color settings in software, soft proofing prints, and publishing images online. The goal is to match color appearance throughout the workflow from camera to monitor to print.
1) Printing inks are made up of pigments, resins, solvents, and additives that are mixed and ground to impart color and bind the ink.
2) Inks are manufactured through a process of preparing varnishes from resins and solvents and then dispersing pigments evenly throughout the varnish.
3) Common printing processes include letterpress, screen, flexography, and gravure printing which utilize the inks to transfer images onto substrates through different techniques.
The document discusses different types of inks used in printing, including web offset, quickset, sheet-fed, water based, UV, laser, non-porous, and metallic inks. It also discusses the major players in the Indian ink industry, including Siegwerk India, DIC India Limited, Toyo Ink Private Limited, and Flint Group India. The estimated size of the Indian ink industry is 150,000 tonnes per year worth approximately Rs. 15 billion, and it has been growing at a CAGR of 10-12% in recent years.
This document discusses coating and laminating processes for paper and films. It describes several methods including extrusion coating, thermal laminating, wet bond laminating, dry bonding, solventless laminating, and extrusion laminating. Extrusion coating is commonly used to apply polyethylene to paperboard with benefits over wax coating like greater strength and moisture resistance. Laminating combines webs using thermal or chemical bonding with adhesives. Thermal laminating uses heat to bond adhesives while wet bond laminating relies on water or solvent. Dry bonding and solventless laminating avoid volatile organic compounds. The document also discusses factors in dry surface treatment coating like particle size and heat treatment to achieve an adequate coating layer.
This document discusses the key ingredients used in beverage production and their typical functions and usage levels. It focuses on water, sugars/sweeteners, carbon dioxide, acids, flavors, colors, preservatives and other additives. Water is the main ingredient and must meet quality standards. Sugars provide sweetness while high intensity sweeteners provide caloric reduction. Carbon dioxide provides carbonation. Common acids used include citric, tartaric, phosphoric and malic which contribute sourness and flavor balancing. Flavors and colors are added to provide identity and appeal. Preservatives and antioxidants extend shelf life.
Xerography/Electrophotography: The Technology of Photocopiers and Laser PrintersFa-Gung Fan
Fa-Gung Fan of Xerox Corporation gave a seminar presentation on xerography/electrophotography, the technology behind photocopiers and laser printers. The presentation covered the general overview of the xerographic process including charging, exposure, development, transfer, fusing, cleaning and erasing. It also discussed modeling of electrostatics in the charging and transfer subsystems using biased rolls and the challenges of transporting and depositing fine toner particles in xerography.
The document discusses types of gravure inks, their properties, and applications. It describes that gravure inks consist of pigments, resins, solvents, and additives. There are four main types of gravure inks - reverse printing inks, surface printing inks, common inks for both surface and reverse printing, and inks for special applications. Polyurethane, vinyl, and acrylic-based inks are examples of reverse printing inks used in food packaging. Surface printing inks include general purpose, heat resistant, and oil/fat resistant inks used in packaging of products like milk, butter, and oils.
The document discusses different types of printing inks used in various printing processes. It describes the key components of printing inks including solvents, binders, colorants and additives. It then classifies printing inks based on viscosity, drying method and chemical nature. Specific details are provided about letterpress, offset, silk screen, flexographic and gravure inks as well as recommended viscosity for different processes. Processing steps like adjusting viscosity and adding solvents/extenders are also summarized.
Formula and Manufacture of Polishes (Floor Polish, Oil Polish, Metal Polish, ...Ajjay Kumar Gupta
The document discusses polishing processes and various types of polishes. It begins by defining polishing as creating a smooth surface through abrasion. It then describes the polishing process and different types of polishes for industrial and domestic applications. It notes that shoe polish sales grew 7% in India in 2015. The document also provides details on wax and polishes production processes and their uses in various industries.
The document describes the process of paper production, including:
1) Wood fibers are the main raw material and are unlocked from surrounding tissue through mechanical or chemical processes to produce pulp.
2) The pulp is refined, additives are mixed in, and the slurry is formed into a continuous web on a paper machine where water is removed through several sections.
3) Key factors that determine paper properties are fiber length and orientation, degree of refining, and additives used. The paper making process produces a fiber-oriented sheet with different characteristics on each side.
This document discusses various paper properties including color space, measuring methods, thickness, bulk, formulas, machine direction, humidity, temperature effects on acclimatization time, classifications of coated and uncoated papers for printing, and technical support contact information. It provides information on paper testing methods, calculations, recommendations, and classifications.
Zinc oxide (ZnO) is added to rubber compounds to activate sulfur vulcanization and thereby reduce the vulcanization time. ... The release of zinc into the environment from rubber occurs during the production, disposal, and recycling of rubber products (e.g., through leaching in landfill sites).
Its most common application is as a vulcanization activator in conjunction with stearic acid. Its addition is recommended at the beginning of the mixture, after the addition of stearic acid - its addition before stearic acid causes difficulty in incorporation and problems with dispersion.
Delamination refers to the separation of layers in printing stock like paper or cardboard. It can be caused by issues during cutting, stacking, or unrolling of paper. Precautions like carefully cutting paper, discarding bottom sheets, and using wedges or probes gently can prevent delamination. For example, in one print shop delamination was traced to a mispositioned cutter bar damaging sheet edges, causing strips to roll up during processing. Identifying the problem sheet can help determine if the cause was cutting, stacking, or something earlier in the paper making process.
Flexographic Printing vs. Digital PrintingLabelValue.com
Ever wondered what the difference was between flexographic printing and digital? Learn the difference and what the benefits and drawbacks of each printing solution are.
This document provides an overview of polymeric food packaging materials. It discusses the history and evolution of packaging from skins and leaves to modern materials. The key types of polymeric materials used in food packaging are described, including polyolefins, polyvinyl chloride, polyesters, nylons, polystyrene, and polycarbonate. Properties, applications, and testing methods of these materials are summarized. The packaging industry is growing significantly with increasing global demand and consumption.
The consumer demand and stringent regulatory environment continue to challenge tissue makers and chemical suppliers, requiring unique quality attributes, more efficient chemical additives and environmentally friendly processes. The two key functional characteristics in the production of tissue and towel are dry and wet tensile strength that must be balanced to provide desired mechanical characteristics, handfeel softness and sufficient dispersibility in water when required. Kemira’s new developments in the strength area bring tissue makers a complete solution, allowing to achieve not only desired quality attributes and reduced environmental impact but also to help improve the efficiency and economics of their processes. In this paper, we will review the traditional and novel solutions for strength and demonstrate the benefits using laboratory data and industrial case studies.
This document discusses various printing techniques and substrates that can be used, including offset printing, dry offset printing, tin offset printing, gravure printing, flexo printing, and flexo tetra pack printing. For each technique, it provides details on the number of printing colors, foil and varnish options, lamination capabilities, printing area sizes, embossing options, suitable substrates, plate types, minimum dot sizes, LPI, examples of applications, and common vendors. The document serves as an overview to compare the capabilities and applications of different printing processes.
The document discusses color theory and color management in digital design. It covers how the eye perceives color, additive and subtractive color models, and factors like lighting conditions that affect color accuracy. It also discusses color terminology, color profiles, calibrating input and output devices, and using software to manage color settings across applications for consistency. Professional monitors and software packages can help calibrate and profile devices and maintain accurate color reproduction in a workflow.
The document discusses the coating process used in paper production. Coating involves covering a paper surface with a pigment layer to enhance properties like visual appeal, ink absorption and smoothness. The key steps are: (1) preparing a water-based coating mixture of pigments, binders and additives; (2) applying the coating using methods like blade coating, curtain coating or size pressing; and (3) drying the coated paper using infrared heaters or airfoil dryers. Coating improves paper characteristics for printing or other end uses.
Basics of offset printing and other printing techniquesSappiHouston
The document provides an overview of different printing methods including offset printing and gravure. It discusses offset printing principles such as how printed and unprinted areas are achieved using the offset plate and fountain solution. Sheet-fed offset and heat-set web offset printing are described. Other conventional printing methods like gravure and flexography are also covered. The document concludes with a high-level summary of the various printing techniques.
Manufacturing of Printing Inks with Formulation (Flexographic Inks, Typograph...Ajjay Kumar Gupta
Manufacturing of Printing Inks with Formulation (Flexographic Inks, Typographic Printing Inks, Planographic Inks, Intaglio Printing Inks, Gravure Printing Inks, Special Inks, Offset Printing Inks, Ball Pen Inks, Fluorescent Inks, Phosphorescent Pigments, Silk-screen Fluorescent Printing, Inorganic Pigments)
Printing ink sector in India witnessed a growth of around 7.5% per annum during the Past years. Printed packaging accounts for around 27% of the demand for printing inks in India followed by newspapers at 20%. Commercial printing/promotional and printed advertising together account for around 19% of the demand. Other key end user segments for printing inks include books and stationery. With the print sector forecast to grow at around 8% per annum, in coming years, printing ink segment is expected to grow strongly.
See more
https://goo.gl/tG4l6B
https://goo.gl/TTuhMC
https://goo.gl/8hpMA3
Tags
Printing Inks with Formulae, Printing Inks with Processes, A Guide to Popular Printing Techniques, best small and cottage scale industries, formulation of printing inks, Gravure Printing industry, Growth in the Printing inks, How Ink Is Made, How Ink is manufactured, How printing ink manufactured in factory, how to manufacture ink, How to Start a Printing inks Production Business, How to start a successful Printing inks business, How to Start Printing inks Industry in India, Ink and Printability Testing, Inking Rollers, Inking Rollers uses, Manufacture of Inks and varnishes, manufacturing of varnish, Modern Printing Process, Most Profitable Printing inks manufacturing Business Ideas, new small scale ideas in inks manufacturing industry, Newspaper Printing Ink, Packaging Inks Market - Covering the Printing Inks, Coatings and Allied Industries, Printing inks Based Small Scale Industries Projects, Printing inks Business, Printing inks manufacturing Industry in India, Printing inks, manufacturing Projects, printing ink formulation, printing ink manual, Printing Ink Manufacturing, printing ink manufacturing process, Printing Ink Technology and Manufacture, Printing Inks & Applications, Printing Processes and Printing Inks, Profitable Small Scale inks Manufacturing, Robust Growth in the Indian Exports of Printing Inks, screen printing process, Setting up and opening your Printing inks Business, Setting up and opening your Printing Business, Small Scale Printing inks manufacturing Projects, Starting a Printing inks manufacturing Business, Starting a Printing Business, Starting an Offset Printing Press, Start-up Business Plan for Printing inks, Startup Project for Printing inks Business, offset printing ink manufacturing process, formulation of Offset Printing Inks, Ball Pen Inks, Fluorescent Inks, Phosphorescent Pigments, Silk-screen Fluorescent Printing, Inorganic Pigments, Offset printing technology, How printing ink manufactured in factory, offset printing ink formulation
This document provides an overview of color management and the color management workflow. It discusses the goals of color management which are to process digital images accurately from capture to final presentation. It then describes the color management workflow which involves profiling devices, setting color settings in software, soft proofing prints, and publishing images online. The goal is to match color appearance throughout the workflow from camera to monitor to print.
1) Printing inks are made up of pigments, resins, solvents, and additives that are mixed and ground to impart color and bind the ink.
2) Inks are manufactured through a process of preparing varnishes from resins and solvents and then dispersing pigments evenly throughout the varnish.
3) Common printing processes include letterpress, screen, flexography, and gravure printing which utilize the inks to transfer images onto substrates through different techniques.
The document discusses different types of inks used in printing, including web offset, quickset, sheet-fed, water based, UV, laser, non-porous, and metallic inks. It also discusses the major players in the Indian ink industry, including Siegwerk India, DIC India Limited, Toyo Ink Private Limited, and Flint Group India. The estimated size of the Indian ink industry is 150,000 tonnes per year worth approximately Rs. 15 billion, and it has been growing at a CAGR of 10-12% in recent years.
This document discusses coating and laminating processes for paper and films. It describes several methods including extrusion coating, thermal laminating, wet bond laminating, dry bonding, solventless laminating, and extrusion laminating. Extrusion coating is commonly used to apply polyethylene to paperboard with benefits over wax coating like greater strength and moisture resistance. Laminating combines webs using thermal or chemical bonding with adhesives. Thermal laminating uses heat to bond adhesives while wet bond laminating relies on water or solvent. Dry bonding and solventless laminating avoid volatile organic compounds. The document also discusses factors in dry surface treatment coating like particle size and heat treatment to achieve an adequate coating layer.
This document discusses the key ingredients used in beverage production and their typical functions and usage levels. It focuses on water, sugars/sweeteners, carbon dioxide, acids, flavors, colors, preservatives and other additives. Water is the main ingredient and must meet quality standards. Sugars provide sweetness while high intensity sweeteners provide caloric reduction. Carbon dioxide provides carbonation. Common acids used include citric, tartaric, phosphoric and malic which contribute sourness and flavor balancing. Flavors and colors are added to provide identity and appeal. Preservatives and antioxidants extend shelf life.
Xerography/Electrophotography: The Technology of Photocopiers and Laser PrintersFa-Gung Fan
Fa-Gung Fan of Xerox Corporation gave a seminar presentation on xerography/electrophotography, the technology behind photocopiers and laser printers. The presentation covered the general overview of the xerographic process including charging, exposure, development, transfer, fusing, cleaning and erasing. It also discussed modeling of electrostatics in the charging and transfer subsystems using biased rolls and the challenges of transporting and depositing fine toner particles in xerography.
The document discusses types of gravure inks, their properties, and applications. It describes that gravure inks consist of pigments, resins, solvents, and additives. There are four main types of gravure inks - reverse printing inks, surface printing inks, common inks for both surface and reverse printing, and inks for special applications. Polyurethane, vinyl, and acrylic-based inks are examples of reverse printing inks used in food packaging. Surface printing inks include general purpose, heat resistant, and oil/fat resistant inks used in packaging of products like milk, butter, and oils.
The document discusses different types of printing inks used in various printing processes. It describes the key components of printing inks including solvents, binders, colorants and additives. It then classifies printing inks based on viscosity, drying method and chemical nature. Specific details are provided about letterpress, offset, silk screen, flexographic and gravure inks as well as recommended viscosity for different processes. Processing steps like adjusting viscosity and adding solvents/extenders are also summarized.
Formula and Manufacture of Polishes (Floor Polish, Oil Polish, Metal Polish, ...Ajjay Kumar Gupta
The document discusses polishing processes and various types of polishes. It begins by defining polishing as creating a smooth surface through abrasion. It then describes the polishing process and different types of polishes for industrial and domestic applications. It notes that shoe polish sales grew 7% in India in 2015. The document also provides details on wax and polishes production processes and their uses in various industries.
The document describes the process of paper production, including:
1) Wood fibers are the main raw material and are unlocked from surrounding tissue through mechanical or chemical processes to produce pulp.
2) The pulp is refined, additives are mixed in, and the slurry is formed into a continuous web on a paper machine where water is removed through several sections.
3) Key factors that determine paper properties are fiber length and orientation, degree of refining, and additives used. The paper making process produces a fiber-oriented sheet with different characteristics on each side.
This document discusses various paper properties including color space, measuring methods, thickness, bulk, formulas, machine direction, humidity, temperature effects on acclimatization time, classifications of coated and uncoated papers for printing, and technical support contact information. It provides information on paper testing methods, calculations, recommendations, and classifications.
Zinc oxide (ZnO) is added to rubber compounds to activate sulfur vulcanization and thereby reduce the vulcanization time. ... The release of zinc into the environment from rubber occurs during the production, disposal, and recycling of rubber products (e.g., through leaching in landfill sites).
Its most common application is as a vulcanization activator in conjunction with stearic acid. Its addition is recommended at the beginning of the mixture, after the addition of stearic acid - its addition before stearic acid causes difficulty in incorporation and problems with dispersion.
Delamination refers to the separation of layers in printing stock like paper or cardboard. It can be caused by issues during cutting, stacking, or unrolling of paper. Precautions like carefully cutting paper, discarding bottom sheets, and using wedges or probes gently can prevent delamination. For example, in one print shop delamination was traced to a mispositioned cutter bar damaging sheet edges, causing strips to roll up during processing. Identifying the problem sheet can help determine if the cause was cutting, stacking, or something earlier in the paper making process.
Flexographic Printing vs. Digital PrintingLabelValue.com
Ever wondered what the difference was between flexographic printing and digital? Learn the difference and what the benefits and drawbacks of each printing solution are.
This document provides an overview of polymeric food packaging materials. It discusses the history and evolution of packaging from skins and leaves to modern materials. The key types of polymeric materials used in food packaging are described, including polyolefins, polyvinyl chloride, polyesters, nylons, polystyrene, and polycarbonate. Properties, applications, and testing methods of these materials are summarized. The packaging industry is growing significantly with increasing global demand and consumption.
The consumer demand and stringent regulatory environment continue to challenge tissue makers and chemical suppliers, requiring unique quality attributes, more efficient chemical additives and environmentally friendly processes. The two key functional characteristics in the production of tissue and towel are dry and wet tensile strength that must be balanced to provide desired mechanical characteristics, handfeel softness and sufficient dispersibility in water when required. Kemira’s new developments in the strength area bring tissue makers a complete solution, allowing to achieve not only desired quality attributes and reduced environmental impact but also to help improve the efficiency and economics of their processes. In this paper, we will review the traditional and novel solutions for strength and demonstrate the benefits using laboratory data and industrial case studies.
This document discusses various printing techniques and substrates that can be used, including offset printing, dry offset printing, tin offset printing, gravure printing, flexo printing, and flexo tetra pack printing. For each technique, it provides details on the number of printing colors, foil and varnish options, lamination capabilities, printing area sizes, embossing options, suitable substrates, plate types, minimum dot sizes, LPI, examples of applications, and common vendors. The document serves as an overview to compare the capabilities and applications of different printing processes.
The document discusses color theory and color management in digital design. It covers how the eye perceives color, additive and subtractive color models, and factors like lighting conditions that affect color accuracy. It also discusses color terminology, color profiles, calibrating input and output devices, and using software to manage color settings across applications for consistency. Professional monitors and software packages can help calibrate and profile devices and maintain accurate color reproduction in a workflow.
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National History Day (NHD) is an academic program that engages over 600,000 students annually in China, Korea, South Asia, and other regions in project-based learning related to historical themes. Students participate in NHD by creating projects in categories such as research papers, performances, exhibits, documentaries, or websites. Top students have the opportunity to advance to the world finals each June. NHD provides students with authentic audiences for their work and aligns with 21st century skills of surveying information from various sources and presenting it in a clear manner, as cited by education expert Howard Gardner. Upcoming free teacher training workshops will provide strategies for incorporating NHD into existing curriculum.
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On 12th March 2015 creative consultant Ian Sanders gave a presentation to students at South East Essex Sixth Form College in Essex, UK. These are the accompanying slides.
Video of presentation: https://youtu.be/iHfWHqoGL70
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The journalism I was taught at university changed beyond all recognition when I went into digital. A presentation I've given at schools careers talks on accepting the unknown.
This document discusses printing quality management at Zaman, a Turkish newspaper. It outlines Zaman's printing process at 6 sites, printing technologies used, and quality management systems in place. Key aspects of quality control include adhering to ISO 12647-3 standards for color management, regularly measuring dot gain, inspecting plates, and reporting on printing defects and consumables like newsprint. The overall goal is to continuously monitor and improve printing quality.
This document discusses managing spot colors across branding and packaging workflows. It begins by outlining brand owners' requirements for consistency and the importance of packaging design. It then covers several ISO standards related to color data exchange (ISO 15930, 17972-4) and characterization (ISO 20654). The presenter discusses how CxF/X-4 data can be used with PDF/X, Adobe Illustrator, and ICC profiles to define, proof, and print spot colors accurately from design through production. Tools are presented for ink formulation and process control using spectral measurement data in CxF/X formats. The goal is consistent color reproduction of brands across different printing processes.
The 5 steps of color management are: 1) choose consumables, 2) determine production conditions, 3) optimize prepress, 4) optimize the printing press, and 5) print and evaluate a test form. The document provides details on each step, such as choosing inks and printing stocks in step 1, setting color standards and print speeds in step 2, and ensuring correct platesetter settings in step 3. Step 4 involves standard press settings and dampening adjustment. Step 5 describes printing a test form, measuring, and iterating until color values are accurately achieved. The goal is reproducible quality through consistent color management.
Brilliant colors true to the original on a premium surface – that ̓s
what distinguishes a high-quality print product. Many elements in
prepress and printing impact on a product ̓s color fidelity. The
various input and output units in a print shop ̓s production process,
consumables and other factors can cause deviations in color. A
consistently employed color management system eliminates this
problem. In this issue of Profi Tip we ̓ll show you the most common
sources of error and give you tips on color management. We ̓re
pleased to have caught your interest.
- Flaxen Group is committed to quality control and ensuring customer satisfaction by meeting three basic buyer needs: quality products, on-time shipments, and reasonable prices.
- The company uses a Central Program Monitoring System for supply chain management and on-time shipping. A Production Quality Control unit monitors quality from start to finish.
- Data on defects by month shows the Quality Control team's efforts are paying off in reducing defects in gray fabric, finished fabric, cutting wastage, and sewing faults like rejects, alterations, oil spots, and dirty spots. The goal is to fully implement six sigma quality standards.
The document discusses improvements to increase the gloss level of paint on Ashok Leyland truck cabins. It begins with identifying low gloss levels of 92% on Boss model cabins as the problem. Potential causes of low gloss are analyzed using a fishbone diagram and screening analysis identifies ED bath solvent%, robot flow rate, slow thinner, and paint viscosity as significant factors. An experiment following a Placket design evaluates these factors at different levels. The most significant factors found through a full factorial experiment are further optimized to increase the gloss level above 95%, resolving the low gloss issue.
The document discusses the transition in the printing industry from craft to standardized digital processes. It describes how the ISO 12647 standard was developed to standardize color output across different printing methods and materials. Adopting these process standards improves color consistency and predictability. It allows errors to be detected earlier in the workflow. The document outlines the key aspects of ISO 12647-2 for offset and digital printing, including the FOGRA characteristic data and ICC profiles used to ensure colors are reproduced accurately according to the standard. Printing companies must now use spectrophotometers for color proofing and certification to meet ISO requirements.
Communicating Color for Grand Format PrintersRPimaging, INC
This document discusses communicating color for grand format printers. It introduces X-Rite and Pantone as leaders in color science and technology. It discusses how spectrophotometers have become the standard for measuring color instead of densitometers. Device link ICC profiles are presented as the best way to handle color conversions between color spaces. ISO 12647 standards are discussed as a way to validate color matching, though ISO 12647-8 and the new ISO 12647-7 2013 are more relevant to digital and grand format printing.
This document discusses how to boost QA productivity with smart sampling. It introduces Yamagata Europe and their translation and localization services. It then explains how smart sampling works by selecting representative sections for QA based on parameters like content, language, and translation experience. Various QA metrics and figures are presented to identify areas for improvement, like high error vendors or content types. Both traditional full human QA and automated QA tools like QA Distiller are described for performing smart sampling.
1. The document reports on test results comparing conventional injection molding to Roctool technology for plastic parts.
2. Key findings include improved surface quality, replication rates up to 81%, and roughness reductions of up to 88% with Roctool.
3. Flow length was significantly increased and pressure drop in the cavity was reduced by up to 45% when using Roctool technology at 180°C compared to conventional processing at 80°C.
The document discusses concepts related to software testing including fundamentals of testing, sample test cases, levels of testing, fault taxonomies, and examples like the triangle problem, next date function, and commission problem. It also includes diagrams of an automated teller machine system and currency converter system. Sample questions are provided related to explaining testing terminology, identifying test cases, and classifying errors and faults.
This document discusses key concepts in marketing including definitions of marketing provided by Kotler, the objectives of marketing, and defining basic needs, wants, and luxury goods. It also covers competitive advantage and how it is defined, as well as sustainable competitive advantage. Specific examples discussed include the medical market and closing deals. Key aspects of marketing, such as opportunity identification, new product development, customer attraction and retention are also summarized.
1) Testing was conducted using a spiral mold to compare the flow and pressure characteristics of conventional injection molding versus Roctool technology.
2) With Roctool technology (180°C mold temperature), flow length was improved by up to 137% and injection pressure drop was reduced by up to 66% compared to conventional molding (80°C).
3) Pressure drop between sensors in the cavity was reduced by up to 48% when using Roctool technology with a 1.5mm thick spiral versus conventional molding.
Six sigma case study-a good approach with examplebhanutomar
This document outlines a Six Sigma case study conducted by Paper Organizers International to address complaints about Metallic Securing Devices (MSDs) breaking and failing to keep customer papers together. Baseline data found 60% of MSDs were defective in durability and functionality. A project was launched to decrease defects to 0.62% by improving MSD quality from vendors. Process maps, metrics, and data collection were used to understand sources of variation and develop objectives to minimize costs and complaints related to low MSD quality.
1) Testing using Roctool technology at 140°C showed improvements in surface quality over conventional molding at 90°C, including reduced defects and improved gloss.
2) Roughness measurements found better replication rates and reduced roughness parameters using Roctool technology.
3) Color measurements indicated Roctool technology produced a darker color while maintaining surface finish compared to conventional processing.
The document provides an overview of six sigma and statistical process control (SPC). It defines variation and explains the importance of understanding and controlling it. The objectives of SPC are outlined, including appreciating variation, understanding normal distribution and different types of process variation. Control charts are introduced as a tool to monitor processes and identify special causes of variation. The importance of objective data use is discussed.
This document summarizes the development of a robust SMT process for placing 03015 components, which are only 0.3mm x 0.15mm in size. Through testing different solder pastes and stencil materials, the author developed a process using a laser-cut fine grain stainless steel stencil with an electro polish and nano coating that achieved over 80% transfer efficiency. Taguchi experiments were used to optimize print parameters. Initial tests achieved placement of 03015 components with 0 defects out of 36,000 placements. The printing process achieved a DPMO of 15. Further work is still needed to optimize the process for thinner stencils required by smartphones.
Importance of ISO Standardisation for PublishersWAN-IFRA
This document discusses ISO 12647-3, the quality standard for newspaper printing. It provides an overview of the latest 2013 revision of the standard, including changes to separation settings, plate production specifications, ink shades, gray balance, and dot gain. It also outlines eight steps for implementing the standard in a printing workplace, such as using quality control tools, standardizing materials and processes, achieving 26% dot gain, implementing the new ICC profile, and benchmarking print quality through the WAN-IFRA Color Quality Club competition. Standardization is presented as an achievable goal that does not require large expenses but can motivate staff and improve print quality results.
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Printing Quality Management - Muharrem Yaşar
1. PRINTING QUALITY
MANAGEMENT
An overview to
in ZAMAN Newspaper
Prepared by: Muharrem Yaşar
Quality and Coord. Manager
1 / 62
15.10.2014 Wan-Ifra World Publishing Expo 2014 Amsterdam, The Netherlands
2. İstanbul, Turkey
Feza Gazetecilik A.S. known as Zaman
BS Newspaper, in Turkish
The most purchased newspaper, daily
circulation > 1million
printed in 6 printing sites
«in English means TIME »
3. Printing sites, Distribution areas, % Circulation
own
contracted
% 30
% 20
% 20
% 10
% 15
% 5
6 Printing Sites
5
1
İSTANBUL
İZMİR
ANTALYA
TRABZON
ANKARA
ADANA
8. Zaman (Time) & its weekly sisters
Cuma (Friday)
Cumartesi (Saturday)
Pazar (Sunday)
9. Todays ZAMAN & its Sunday
version Sundays Zaman
Daily Englishnewspaper
10. 000 copies
BS size
10. Weekly periodicals
50. 000 copies
Separately sold
250. 000 copies
magazin
size
Weekly magazine
Weekly news magazine
11. Newspaper Machines
75.000 copies / h., single side-double around
40pages, 24pages colorful
+ Presetting ink keys
+ Soft proofing
- Automatic register control
- Automatic density control
- Automaticcut off register
Plate making Rooms
CTP lines ( CTP s and P&Bs)
+ Ink saving program
What we have
12. General
MANAGER
Vice Manager
Responsible for
Production
Printing Plant
Director
Quality E.
. Quality E.
. Quality El.
. Quality E.
. Quality E.
Quality and
Coordination
Dept. Director
Quality M.
Technical M.
Planning and
Reports M.
Purchasing
Dept. Director
Hierarchy
19. Main target of INCQC is
International Color Quality Club Competition: Wan-Ifra
Printing Quality competition between newspaper
19
to promote ISO Newspaper Standard
(ISO 12647/3 shortly IFRA26)
21. Dep. Property Set values
Electronic data delivery PDF/X-1 or PDF/X-3
Press profile ISO 12647-3 (IFRA 26)
C
T
P
Ink saving
GCR
Ton value sum Max 240-260,
Black >%85
Rips
Ton values 500 lpcm
Screen frequency 40 L/ cm
FM screen 40 micron
Screen angle CMYK 15,75,0,135
Dot shape ellipticaldot,
link-ups %40,%60
Purchasing Newsprint La*b* 82,0,3 ( tolerances: 3,1,1 )
Adver. , Design,
Prepress, Page
Delivery
A ) ISO 12647/3
24. 24
• ISO color coordinates
• TVI dot gain curve
So the most critical parts of IFRA26;
( La*b* values )
• Dot gain and grey balance values
are informative only
A ) ISO 12647/3
25. • ISO color coordinates
means decrease the ink
density ISO Lab (IFRA 26)
measuring mod :
ISO-Check
A ) ISO 12647/3
27. • ISO color coordinates
* With black backing
ISO (IFRA 26) values
Red 52 41 25
Yellow 78 -3 58
Green 53 -34 17
Cyan 57 -23 -27
Blue 41 7 -22
Magenta 54 44 -2
Paper 82 0 3
Black 36 1 4
M
C
Y
g
r
b
K
only Paper and CMYK used
A ) ISO 12647/3 • ISO color coordinates
28. 28
• Always black backing should be
used, but it isn’t practical. So
what?
While using ISO Lab measurement
mode there is a difficulty
• There can be any way to use it
without black backing ?
A ) ISO 12647/3 • ISO color coordinates
29. Only yellow b*
value changed
First : determine perfect dots in IFRA26
Second: measure Lab with no black backing
and look at the differences
A ) ISO 12647/3 • ISO color coordinates
30. • ISO color coordinates
You can put your new referance values
ColorScale mod for new ref.
values
ISO-Chek mod ISO Lab values
has already loaded
A ) ISO 12647/3 • ISO color coordinates
31. • Dot gain
A ) ISO 12647/3 • Dot gain
The most tone valueincrease is between 40-50 % area
32. old ….. 4,5 mm
new ….. 3 mm
A ) ISO 12647/3 • Dot gain
41. The most tone value
increase value of each color
is stored in RIP for
compensation
42. 42
For consistency in Printing quality
Plate related quality control jobs are
also crucial
in daily production
weekly, monthly,
& when necessary
Check and
control
Calibrate
43. Daily Plate Checking
only Plate
Plate + Press
Applieddot gains
Only %2, %98 and % 50 tone values are measured
Plate is taken before P&B
machine for
measurement.
44. /25 44
Every week a test plate
which has a “platescale” job
on. produced
Plate Scale
Weekly Plate Calibration
50. 50
Later, with experiences it reached 57
B Printing Defects Checking
Point are
given as ;
3 Huge
2 Standard
1 Small
51. C Consumabels Reporting
To prepare a purchasable products list for our purchasing department.
Types of quality test : Start-up tests
Continuity test
START UP test levels : Beginning,
Middle and
Long term
52. 52
Quality Test Request is evaluated for convenience
If everything is OK, it is converted into Quality Orders for printing plants
In the order, the amount of consumable needed for test is also given
57. Printing plant /- ifra reel code- brand name of newsprint / Newsprint machine number
58. *All criterions and weights
described by our personals;
*Each area is filled by its related
personnel
Register and tension
control
Cleaning
Reel Stand
Ink and water
adjustments
59. Ex: for 45gr. Std Newsprint
for Purchasing Department
Actual Newsprint qualityreports
from best to worst GOOD
BAD