Printing is a process for reproducing text and image, typically with ink on paper using a printing press. It is often carried out as a large-scale industrial process, and is an essential part of publishing and transaction printing.
A printing press is a mechanical device for applying pressure to an inked surface resting upon a medium (such as paper or cloth), thereby transferring an image
Books and newspapers are printed today using the technique of offset lithography. Other common techniques include…
' Flexography' (often abbreviated to flexo ) is a form of printing process which utilizes a flexible relief plate. It is basically an updated version of letterpress that can be used for printing on almost any type of substrate including plastic, metallic films, cellophane, and paper. It is widely used for printing on the non-porous substrates required for various types of food packaging
A flexo print is achieved by creating a mirrored master of the required image as a 3D relief in a rubber or polymer material. A measured amount of ink is deposited upon the surface of the printing plate (or printing cylinder) using an anilox roll. The print surface then rotates, contacting the print material which transfers the ink.
Typical products printed using flexography include brown corrugated boxes, flexible packaging including retail and shopping bags, food and hygiene bags and sacks, flexible plastics, self adhesive labels, and wallpaper.
A number of newspapers now eschew the more common offset lithography process in favour of flexo.
Rotogravure is mainly used for magazines and packaging.
It is a type of intaglio printing process, in that it involves engraving the image onto an image carrier. In gravure printing, the image is engraved onto a copper cylinder because, like offset and flexography, it uses a rotary printing press.
The vast majority of gravure presses print on reels of paper, rather than sheets of paper.
Rotary gravure presses are the fastest and widest presses in operation, printing everything from narrow labels to 12-feet-wide rolls of vinyl flooring.
Additional operations may be in-line with a gravure press, such as saddle stitching facilities for magazine/brochure work .
Inkjet is used typically to print a small number of books or packaging, and also to print a variety of materials from high quality papers simulate offset printing, to floor tiles.
Inkjet is also used to apply mailing addresses to direct mail pieces.
Inkjet printers are a type of computer printer that operates by propelling tiny droplets of liquid ink onto paper.
They are the most common type of computer printer for the general consumer due to their low cost, high quality of output, capability of printing in vivid color, and ease of use.
The dye transfer process is a continuous-tone color photographic printing process, popularized by the Eastman Kodak Company in the 1940s.
It is sometimes referred to by such generic names as wash-off relief printing and dye imbibition transfer printing.
The process involves making three matrices for each color, which absorb dye in proportion to the density of the relief.
A color print is formed, by transferring the dyed film matrices in physical contact onto a mordanted dye receiver paper.
The dyes used in the process are very spectrally pure compared to normal coupler induced photographic dyes, with the exception of the Kodak cyan.
Also the dyes have excellent light and dark fastness.
The dye transfer process posses the largest color gamut and tonal scale than any other process, including inkjet.
Another important characteristic of dye transfer is it allows the practitioner the highest degree of photographic control compared to any other photochemical color print process
Laser Printing is mainly used in offices and for transactional printing (bills, bank documents).
Laser printing is commonly used by direct mail companies to create variable data letters or coupons, for example.A laser printer is a common type of computer printer that rapidly produces high quality text and graphics on plain paper.
Like photocopiers, laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor.
Pad Printing for applying a flat image on a curved substrate.
Pad Printing is sometimes also called "Tampo" or "Tampo Printing".
Pad printing is used for decorating products in many industries including medical, automotive, promotional, apparel, electronics, appliances, sports equipment and toys.
It can also be used to deposit functional materials such as conductive inks, adhesives, dyes and lubricants.
New horizons in Printing
Printers have evolved from mammoth noisy devices in special print rooms to compact laser printers with wireless technology, or multifunctional devices.
The concept of printing in the enterprise has undergone a major paradigm shift in the last couple of years. One of the major reasons behind this is rapid growth in the area of printing technology. This has created a scenario where printers have evolved much beyond their basic printing function.
Rapid technology advances, reduced costs, color printing, ever increasing number of functions—the list of options is getting bigger and bigger with each passing day.
This is making the number of available printing options more lucrative. It also means that organizations are adopting newer methods of printing