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09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
09   printers
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09 printers

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Printer type

Printer type

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  • 1. PrintersPrinters
  • 2. The printer is computer peripheral,The printer is computer peripheral, & output device that accepts text& output device that accepts text and graphic as input,and graphic as input, & prints or illustrations on paper as& prints or illustrations on paper as a hard copy in the form ofa hard copy in the form of documents or transparencies etc..documents or transparencies etc..
  • 3. TypesTypes There are four major types ofThere are four major types of printers.printers. 1.1. Impact printerImpact printer 2.2. Sprayed-ink printerSprayed-ink printer 3.3. Laser printerLaser printer 4.4. Plotters.Plotters.
  • 4. Impact PrintersImpact Printers 1.1. Daisy WheelDaisy Wheel 2.2. Dot MatrixDot Matrix
  • 5. Daisy wheel printerDaisy wheel printer
  • 6. Daisy wheelDaisy wheel The printer look like daisy contains a disk made ofThe printer look like daisy contains a disk made of plastic or metal on which letters and symbols areplastic or metal on which letters and symbols are placed on each patel.placed on each patel. When printer needs to print a character, itWhen printer needs to print a character, it sends the signal to mechanism calledsends the signal to mechanism called printheadprinthead, the, the printhead rotates the daisyprinthead rotates the daisy wheel until the desiredwheel until the desired letter is in place andletter is in place and facing the paper then afacing the paper then a electromechanical hammerelectromechanical hammer calledcalled SolenoidSolenoid strikes thestrikes the back of the characterback of the character contained petal, forcing thecontained petal, forcing the character to hit an inkcharacter to hit an ink ribbon, leaving an impression ofribbon, leaving an impression of the character onthe character on the paper.the paper.
  • 7.  Daisy wheel printing speed isDaisy wheel printing speed is measuredmeasured inin character per secondcharacter per second andand standardstandard speed is 10 to 50speed is 10 to 50 characterscharacters per second.per second.  Printer work like typewriter andPrinter work like typewriter and best in multi-copy applications, itbest in multi-copy applications, it can’tcan’t print graphics.print graphics.
  • 8. Dot MatrixDot Matrix This is an other type of impactThis is an other type of impact printers here printhead contains rowprinters here printhead contains row of pins.of pins. The pins are wrapped with coils ofThe pins are wrapped with coils of wire to create solenoid, to trigger awire to create solenoid, to trigger a particular pin the printer controllerparticular pin the printer controller sends a signal tosends a signal to printheadprinthead, which, which energize the wires, this makes wiresenergize the wires, this makes wires into electromagnet which repel theinto electromagnet which repel the print pin towards ribbon and printingprint pin towards ribbon and printing dots in column and rows and makingdots in column and rows and making letters and numbers on paper.letters and numbers on paper.
  • 9. Initialy 9 pins used but laterInitialy 9 pins used but later 17 and 24 pin models also17 and 24 pin models also introduced for fine outputintroduced for fine output print.print. Its standard speed aboutIts standard speed about 50 to over 500 cps.50 to over 500 cps.
  • 10. Dot MatrixDot Matrix
  • 11. Sprayed-ink PrintersSprayed-ink Printers 1.1. InkjetInkjet 2.2. Bubble jetBubble jet
  • 12. InkjetInkjet Inkjet printers considered as sprayed-ink on paper.Inkjet printers considered as sprayed-ink on paper. this uses cartridge which contains ink, pumpthis uses cartridge which contains ink, pump and a ink nozzle to complete printing.and a ink nozzle to complete printing. when computer send print command thenwhen computer send print command then printhead at cartridge energize Piezo-actuatorprinthead at cartridge energize Piezo-actuator which spraying ink then nozzles makes shapewhich spraying ink then nozzles makes shape letters, words or images on paper.letters, words or images on paper. Ink-jet printers are capable of producing highInk-jet printers are capable of producing high quality print. A typical ink-jet printer provides aquality print. A typical ink-jet printer provides a resolution of 300 dpi, also newer models offerresolution of 300 dpi, also newer models offer higherhigher resolutions.resolutions.
  • 13. InkjetInkjet
  • 14. Bubble jet printerBubble jet printer Bubble-jet printers use special heatingBubble-jet printers use special heating elements to out the ink.elements to out the ink. Like inkjet printers this type of printer alsoLike inkjet printers this type of printer also uses cartridge which have several smalluses cartridge which have several small chambers inside, bottomchambers inside, bottom of each chamberof each chamber have a small pinholes, these pinholes arehave a small pinholes, these pinholes are used to spray ink on theused to spray ink on the page and printpage and print characters and images with finecharacters and images with fine resolution.resolution.
  • 15. If particular chamber needs to spray ink,If particular chamber needs to spray ink, then electric signal is sent to heatingthen electric signal is sent to heating element, when element is energized,element, when element is energized, it creates vapours, then these vapours pushit creates vapours, then these vapours push ink towards pinhole and forms a bubble ofink towards pinhole and forms a bubble of ink.ink.
  • 16. BubblejetBubblejet
  • 17. Laser PrintersLaser Printers Laser printers accept computer signals andLaser printers accept computer signals and convert it to laser beam to produce anconvert it to laser beam to produce an image on a drum, toner touches drum andimage on a drum, toner touches drum and coat with inked powder and finally convertcoat with inked powder and finally convert this inked image to a paper.this inked image to a paper. Photocopiers also work on same procedure.Photocopiers also work on same procedure. Laser printer also called page printers andLaser printer also called page printers and use memory to print high-resolution text &use memory to print high-resolution text & graphics outputs, resolution ranges fromgraphics outputs, resolution ranges from 300 to 1200 dpi. The speed of laser printers300 to 1200 dpi. The speed of laser printers ranges from about 5 to 20 ppm.ranges from about 5 to 20 ppm.
  • 18. Printer ComponentsPrinter Components  Printer Controller unitPrinter Controller unit  Corona wire unitCorona wire unit  Laser beam converter unitLaser beam converter unit  Photosensitive drum unitPhotosensitive drum unit  Toner unitToner unit  Paper feeding unitPaper feeding unit  Fuser unitFuser unit  Exit rollers unitExit rollers unit
  • 19. How Laser printer worksHow Laser printer works
  • 20. 1.1. Text or graphics base data stream is sent toText or graphics base data stream is sent to the printer.the printer. 2.2. The printer controller circuit receive inputThe printer controller circuit receive input signals and manages how to print this data.signals and manages how to print this data. 3.3. Here this controller circuit done two jobsHere this controller circuit done two jobs first it activates the corona wire. This is afirst it activates the corona wire. This is a high-voltage wire generate static electrichigh-voltage wire generate static electric charge to anything nearby, secondcharge to anything nearby, second computercomputer data signals converts into laserdata signals converts into laser beam.beam.
  • 21. 4.4. The corona wire charges up theThe corona wire charges up the photoreceptor drum so the drum gains aphotoreceptor drum so the drum gains a positive charge spread uniformly across itspositive charge spread uniformly across its surface.surface. 5.5. The circuit activates the laser to draw theThe circuit activates the laser to draw the image of page onto the drum using mirror,image of page onto the drum using mirror, when laser beam hits the drum, itwhen laser beam hits the drum, it removesremoves positive charges and creates negativepositive charges and creates negative charges on drum and transfer image on thecharges on drum and transfer image on the drum.drum.
  • 22. 6.6. An ink roller (toner) touching drum andAn ink roller (toner) touching drum and coats it with tiny particles of powdered inkcoats it with tiny particles of powdered ink then this inked image ofthen this inked image of the page remainsthe page remains on the drum.on the drum. 7.7. A sheet of paper from a hopper on the otherA sheet of paper from a hopper on the other side of the printer feeds up toward theside of the printer feeds up toward the drum. As it moves along, the paper is givendrum. As it moves along, the paper is given a strong electrical positive charges bya strong electrical positive charges by another corona wire.another corona wire.
  • 23. 8.8. When the paper reaches near the drum, itsWhen the paper reaches near the drum, its positive charges attracts the negativepositive charges attracts the negative charges away from the drum, then inked-charges away from the drum, then inked- image isimage is transferred from the drum totransferred from the drum to paperpaper surface.surface. 9.9. The inked paper passes through two hotThe inked paper passes through two hot rollers from fuser unit. The heat androllers from fuser unit. The heat and pressure from the rollers press tonerpressure from the rollers press toner particles permanently into the paper.particles permanently into the paper. 10.10. Finally exit rollers get printed paper out,Finally exit rollers get printed paper out, thisthis output is hot for a while.output is hot for a while.
  • 24. Laser print processesLaser print processes 1.1. EP print process:EP print process: This technology uses aThis technology uses a combination of static electriccombination of static electric charges, laser light and toner.charges, laser light and toner. 2.2. HP print process:HP print process: This technology is relativelyThis technology is relatively samesame as EP but it uses chargingas EP but it uses charging rollerroller instead of corona wire andinstead of corona wire and developing roller in the toner.developing roller in the toner.
  • 25. Laser print processesLaser print processes 3.3. LED print processLED print process This technology usesThis technology uses LEDs insteadLEDs instead of laser light, andof laser light, and these LEDs arethese LEDs are near to drum,near to drum, having advantage ofhaving advantage of low cost andlow cost and laser beamlaser beam hazardous.hazardous.
  • 26. PlottersPlotters Plotters are large-scale printers, These arePlotters are large-scale printers, These are commonly used for technical drawings suchcommonly used for technical drawings such as engineering drawings or architecturalas engineering drawings or architectural designs.designs. The two basic types of plotters are calledThe two basic types of plotters are called 1.1. Flatbed plottersFlatbed plotters 2.2. Drum plotters.Drum plotters.
  • 27. Flatbed PlottersFlatbed Plotters Flatbed plotters one of the graphicsFlatbed plotters one of the graphics output device that draws by moving aoutput device that draws by moving a pen in both horizontal and verticalpen in both horizontal and vertical directions over a sheet of paper; thedirections over a sheet of paper; the overall size of the drawing is limited byoverall size of the drawing is limited by the height and width of this bed.the height and width of this bed.
  • 28. Flatbed PlottersFlatbed Plotters
  • 29. Drum PlottersDrum Plotters Drum plotters, also called upright plotters,Drum plotters, also called upright plotters, this type of plotters are vertically positioned.this type of plotters are vertically positioned. Printing image is on a drum where paperPrinting image is on a drum where paper rolls on it and making a fine image, text orrolls on it and making a fine image, text or design as large scale printing.design as large scale printing.
  • 30. Drum PlottersDrum Plotters
  • 31. Printer CharacteristicsPrinter Characteristics Color:Color: Color printers are more expensive toColor printers are more expensive to operate since they use two inkoperate since they use two ink cartridges one is colored and other iscartridges one is colored and other is black ink, these are important for mapsblack ink, these are important for maps andand designs.designs. Resolution:Resolution: Printer resolution (sharpness) is usuallyPrinter resolution (sharpness) is usually measured in dots per inch (dpi),measured in dots per inch (dpi), standard resolution is 300 - 600 dpi.standard resolution is 300 - 600 dpi.
  • 32. Printer CharacteristicsPrinter Characteristics Speed:Speed: Speed of printer is based on page sent,Speed of printer is based on page sent, Color printers are slower.Color printers are slower. Latest and expensive printers areLatest and expensive printers are much faster.much faster. Memory:Memory: Memory used to store print commandsMemory used to store print commands sent by computer, Most printers comesent by computer, Most printers come with a small amount of memory thatwith a small amount of memory that can be expanded by the user.can be expanded by the user.
  • 33. Other PrintersOther Printers
  • 34. Portable printersPortable printers Portable printers arePortable printers are lightweight using alightweight using a batterybattery instead of powerinstead of power from thefrom the computer.computer. Usually they maintainsUsually they maintains basic print resolutionsbasic print resolutions suitable for plain textsuitable for plain text printing.printing.
  • 35. Digital Photo PrintersDigital Photo Printers Many middle rangeMany middle range printers print photoprinters print photo quality images.quality images. Usually color printers,Usually color printers, specially photo printspecially photo print with greater resolutionwith greater resolution & image quality.& image quality.
  • 36. Network printerNetwork printer This type of printer isThis type of printer is installed in LAN orinstalled in LAN or Wireless LAN (WLAN)Wireless LAN (WLAN) environment andenvironment and common printing facilitycommon printing facility to all network users.to all network users.
  • 37. Multifunction printers:Multifunction printers: This type of printer containsThis type of printer contains High-quality colorHigh-quality color printing, Fax machine,printing, Fax machine, Color copier,Color copier, Scanner,Scanner, Telephone.Telephone. facilities in one device.facilities in one device.
  • 38. 3D Printers3D Printers This type of printerThis type of printer creates computer-aidedcreates computer-aided design 3-D applications.design 3-D applications. The printer is fast,The printer is fast, versatile and simple,versatile and simple, allowing engineers toallowing engineers to produce a range ofproduce a range of concept models andconcept models and functional test parts offunctional test parts of any design.any design.

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