How Does the Laser Printer Work

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04/10/2304/10/23 Kalina Kourdova 9/5Kalina Kourdova 9/5 22

Components of The Laser PrinterComponents of The Laser Printer

Static ElectricityStatic ElectricityDrum Drum TonerTonerFuserFuserPrinter ControllerPrinter Controller


Getting The DataGetting The Data

The printer controller “communicates” with The printer controller “communicates” with the computer through communication portthe computer through communication port

It can be either parallel port or USBIt can be either parallel port or USBThe data is transferred to the The data is transferred to the

printer and it decides how to printer and it decides how to

arrange it on paperarrange it on paper


LanguageLanguage

The printer and the computer need The printer and the computer need

to speak the same page description to speak the same page description languagelanguage

Most commonly met nowadays is Printer Most commonly met nowadays is Printer Command Language (PCL) Command Language (PCL)


Arranging The PageArranging The Page

The printer controller determines the The printer controller determines the margins and word and graph placemargins and word and graph place

The raster image processor (RIP) breaks The raster image processor (RIP) breaks the data into pieces the data into pieces

Data is saved in printer’s memoryData is saved in printer’s memoryThis enables consequent copying of filesThis enables consequent copying of files


Writing The Data On The DrumWriting The Data On The Drum

The data is written on the The data is written on the

drum by laser scanningdrum by laser scanningThe laser assembly, including laser, mirror The laser assembly, including laser, mirror

and lens, moves the beam thatand lens, moves the beam that

changes the electrical charge on the changes the electrical charge on the places where ink should be putplaces where ink should be put


Getting The PaperGetting The Paper

The feed rollers of the printerThe feed rollers of the printer

grasp the paper and pull itgrasp the paper and pull itThis and the toner pickup This and the toner pickup

occur almost at the same timeoccur almost at the same time


The TonerThe Toner

First, the electrostatic image is created First, the electrostatic image is created

by changing the charges on different by changing the charges on different placesplaces

The drum continues to revolve and The drum continues to revolve and

the toner sticks to the negatively the toner sticks to the negatively

charged places of the textcharged places of the text


The FuserThe Fuser

A pair of heated rollersA pair of heated rollersTheir temperature can reach 355 degrees Their temperature can reach 355 degrees

Fahrenheit, which makes the papers that Fahrenheit, which makes the papers that go out of it hotgo out of it hot

When the paper goes through the When the paper goes through the

fuser, the toner melts on itfuser, the toner melts on it


Problems That Might OccurProblems That Might Occur

Vertical white areas or gray mist Vertical white areas or gray mist Horizontal black lines Horizontal black lines Printing in gray color instead of Printing in gray color instead of

black (this means the toner is black (this means the toner is

about to finish)about to finish)


Health HazardsHealth Hazards

When using laser printer certain gases When using laser printer certain gases

like ozone, nitrogen oxide and carbon like ozone, nitrogen oxide and carbon monoxide that can affect human health, monoxide that can affect human health, are producedare produced

Ultraviolet light can cause eye damageUltraviolet light can cause eye damage


SummarySummary

The laser printer is one of The laser printer is one of

the most widespread devices nowadays the most widespread devices nowadays Even though it is very often Even though it is very often

used, it hides some health risksused, it hides some health risks Only a few people know the Only a few people know the

way it worksway it works


WorksWorks CitedCited Grammatis, Yannis. "How does a laser printer work?" Grammatis, Yannis. "How does a laser printer work?" Information SystemInformation System. 5 Feb. . 5 Feb.

2005. 29 May 2008 <http://www.chaminade.org/MIS/Articles/ 2005. 29 May 2008 <http://www.chaminade.org/MIS/Articles/ HowLaserPrintersWork.htm>. HowLaserPrintersWork.htm>.

Harris, Tom. Harris, Tom. How Laser Printer WorksHow Laser Printer Works. 29 May 2008 . 29 May 2008 <http://computer.howstuffworks.com/laser-printer2.htm>. <http://computer.howstuffworks.com/laser-printer2.htm>.

"Photocopier or Laser Printer Hazards." "Photocopier or Laser Printer Hazards." The London hazards Center FactsheetThe London hazards Center Factsheet. . Dec. 2002. 29 May 2008 <http://www.lhc.org.uk/members/pubs/factsht/ Dec. 2002. 29 May 2008 <http://www.lhc.org.uk/members/pubs/factsht/ 76fact.pdf>. 76fact.pdf>.

http://www.mrgadget.com.au/catalog/images/Canon_Pixma_MP800_Multi-Functional_Printer2.jphttp://www.mrgadget.com.au/catalog/images/Canon_Pixma_MP800_Multi-Functional_Printer2.jpgg

http://techtaxi.blogspot.com/2007/10/samsung-scx-4500-multifunction-laser.html&h=353&w=382&http://techtaxi.blogspot.com/2007/10/samsung-scx-4500-multifunction-laser.html&h=353&w=382&sz=17&hl=en&start=29&tbnid=53QONgfgU-u8SM:&tbnh=114&tbnw=123&prev=/images%3Fq%3sz=17&hl=en&start=29&tbnid=53QONgfgU-u8SM:&tbnh=114&tbnw=123&prev=/images%3Fq%3Dlaser%2Bprinter%26start%3D18%26gbv%3D2%26ndsp%3D18%26hl%3Den%26sa%3DNDlaser%2Bprinter%26start%3D18%26gbv%3D2%26ndsp%3D18%26hl%3Den%26sa%3DN

http://www.global-b2b-network.com/direct/dbimage/50334056/Toner_Cartridge.jpghttp://www.global-b2b-network.com/direct/dbimage/50334056/Toner_Cartridge.jpg http://computer.howstuffworks.com/laser-printer3.htmhttp://computer.howstuffworks.com/laser-printer3.htm http://computer.howstuffworks.com/laser-printer7.htmhttp://computer.howstuffworks.com/laser-printer7.htm http://www.whiteseis.com/Images/printer.jpghttp://www.whiteseis.com/Images/printer.jpg http://www.keyghost.com/usb%20keylogger/KeyGhost-USB-512KB-Plugs.jpghttp://www.keyghost.com/usb%20keylogger/KeyGhost-USB-512KB-Plugs.jpg http://pcl.to/unicode/autoclick.pnghttp://pcl.to/unicode/autoclick.png http://computer.howstuffworks.com/laser-printer1.htmhttp://computer.howstuffworks.com/laser-printer1.htm http://www.crunchgear.com/wp-content/uploads/2008/02/hanging_printer.jpghttp://www.crunchgear.com/wp-content/uploads/2008/02/hanging_printer.jpg http://computer.howstuffworks.com/laser-printer10.htmhttp://computer.howstuffworks.com/laser-printer10.htm

How Does the Laser Printer Work

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