History n Working Of Laser Printer

Awais Alam
Awais AlamStudent at Govt. College University Faisalabad um Govt. College University Faisalabad
Topic
Laser
Printer
Categories of printer:
Impact printer
 Non impact printer
Laser printer
 Laser printer is a non impact printer.
 Laser printer stand for light amplification by stimulated
emission of radiation.
 Laser printer invented by gray Starweather at in 1969 when
American Xerox Corporation held a dominant position in
the copier market In 1960.
Starweather
Laser printer contained:
 A laser beam which is
contain negative charge.
 Mirror or lens.
 Toner hopper attached
with developing roller.
 Drum core is called
photoreceptor that
receptor of light.
 Fuser .
 Discharge lamp.
Steps of printing
1: Charging
2: Exposing
3: Developing
4: Transferring
5: Fusing
6: cleaning
Charging:
 When data given to the computer then electronics
circuit activates Corona wire which is contain positive
charge gives to the drum.
 When laser beam strike with the drum then erase the
positive charge and creates the negative charge .
History n Working Of Laser Printer
Exposing
Corona wire falls positive charge on drum . When laser
beams which is contain negative charges fall on drum
and strike with on positive charges then erase the
positive charges and drawing letters and images which
is to be printed on this drum. It is also known as
electrostatic images.
Developing:
 Toner contain a fine black powder. Since it has a
positive charge, the toner clings to the negative
discharged areas of the drum, but not to the positively
charged "background."
Transferring:
Before the paper rolls under the drum. This charge is
stronger than the negative charge of the electrostatic
image, so the paper can pull the toner powder away.
The photoreceptor is pressed or rolled over paper,
transferring the image.
The speed of paper passing through drum is very slow
and according to the speed of drum.
Fusing:
 The paper passes through rollers in the fuser assembly
where heat of up to 200 °C (392 °F).
 One roller is usually a hollow tube (heat roller) and the
other is a rubber backing roller (pressure roller). A radiant
heat lamp is suspended in the center of the hollow tube,
and its infrared energy uniformly heats the roller from the
inside.
 Some printers use a very thin flexible metal fuser roller, so
there is less mass to be heated and the fuser can more
quickly reach operating temperature.
 If paper moves through the fuser more slowly, there is more
roller contact time for the toner to melt, and the fuser can
operate at a lower temperature. Smaller, inexpensive laser
printers typically print slowly, due to this energy-saving
design, compared to large high speed printers where paper
moves more rapidly through a high-temperature fuser with
a very short contact time.
Cleaning:
When the print is complete, discharge lamp removes
any electron on photoreceptor.
Advantages
 It is very fast printer.
 It is no noise during the printing.
 A typical laser printer provides a resolution of 1200 dpi
or more.
 It printing speed is higher than inkjet printer.
 The black and white printing cost of laser printer is
less than inkjet printer
disadvantages
It is very expensive.
History n Working Of Laser Printer
1 von 16

Recomendados

Laser printersLaser printers
Laser printersAbhijit Jadhav
19.4K views14 Folien
Printer'sPrinter's
Printer'ssilentsoul
38.7K views28 Folien
inkjet printersinkjet printers
inkjet printersalizia54
777 views11 Folien
09   printers09   printers
09 printersarulmanimaran
4.1K views38 Folien
Printer and its typesPrinter and its types
Printer and its typesM Waqas Ahmad
20.3K views37 Folien

Más contenido relacionado

Was ist angesagt?

PrintersPrinters
PrintersMudasirbaloch
1.5K views31 Folien
PrintersPrinters
PrintersBESOR ACADEMY
1.4K views19 Folien
Thermal printerThermal printer
Thermal printerHafiz Ubaid
786 views6 Folien
Cathod ray tube pptCathod ray tube ppt
Cathod ray tube pptABHISHEK KUMAR
11.1K views23 Folien
Dot matrix printersDot matrix printers
Dot matrix printersmarchawes
4K views6 Folien
Presentation printerPresentation printer
Presentation printerDhruv Vyas
70.2K views21 Folien

Was ist angesagt?(20)

PrintersPrinters
Printers
Mudasirbaloch1.5K views
PrintersPrinters
Printers
BESOR ACADEMY1.4K views
Thermal printerThermal printer
Thermal printer
Hafiz Ubaid786 views
Cathod ray tube pptCathod ray tube ppt
Cathod ray tube ppt
ABHISHEK KUMAR11.1K views
Dot matrix printersDot matrix printers
Dot matrix printers
marchawes4K views
Presentation printerPresentation printer
Presentation printer
Dhruv Vyas70.2K views
Printers,types ,working and use.Printers,types ,working and use.
Printers,types ,working and use.
RosaDemalo6.1K views
Printers and its typesPrinters and its types
Printers and its types
Ashok Raj1.5K views
Printer Plotter (special printers )Printer Plotter (special printers )
Printer Plotter (special printers )
Venkat Karanam7.3K views
ScannersScanners
Scanners
Bits9.8K views
Printers And Its TypesPrinters And Its Types
Printers And Its Types
Aasim Mushtaq87.2K views
Crt displayCrt display
Crt display
Hinal Lunagariya7.4K views
Types of printerTypes of printer
Types of printer
manpreet_arora42.7K views
INKJET PRINTERSINKJET PRINTERS
INKJET PRINTERS
iramnaeem7.5K views
He ne lasers 1He ne lasers 1
He ne lasers 1
Chuhdry30.3K views
Scanner presentationScanner presentation
Scanner presentation
Aniket Menon37K views
Working of scannerWorking of scanner
Working of scanner
Shrayas Suryakumar14.1K views
printerprinter
printer
Nilima Adhav3K views

Similar a History n Working Of Laser Printer

printer FINAL.PPTprinter FINAL.PPT
printer FINAL.PPTssuserddf612
46 views78 Folien
09   printers09   printers
09 printersArul Manimaran
281 views38 Folien
09   printers09   printers
09 printersvinit420
534 views38 Folien
PrinterPrinter
Printermuhammad shoaib
7.6K views30 Folien

Similar a History n Working Of Laser Printer(20)

laserprinter-161127050445.pdflaserprinter-161127050445.pdf
laserprinter-161127050445.pdf
SANKETKOTAK525 views
printer FINAL.PPTprinter FINAL.PPT
printer FINAL.PPT
ssuserddf61246 views
09   printers09   printers
09 printers
Arul Manimaran281 views
Difference between LED and laser printerDifference between LED and laser printer
Difference between LED and laser printer
printertechsupport194 views
09   printers09   printers
09 printers
vinit420534 views
PrinterPrinter
Printer
muhammad shoaib7.6K views
Unit3 ppt2 printersUnit3 ppt2 printers
Unit3 ppt2 printers
FarhanMalik9372 views
Printer and its typesPrinter and its types
Printer and its types
SanaSiddiqui60928 views
PrintersPrinters
Printers
RAHEEL AWAL812 views
Chapter 9.0Chapter 9.0
Chapter 9.0
Adebisi Tolulope1.7K views
Assignment on PrinterAssignment on Printer
Assignment on Printer
Shariful Haque8.3K views
PrintersPrinters
Printers
NaimishBhuva402 views
PrinterPrinter
Printer
Ankit92Chitnavis20.2K views
Printers and its typesPrinters and its types
Printers and its types
Areeba Aftab187 views
 printers printers
printers
sunakshipruthi155 views
Output devicesOutput devices
Output devices
Yastee Shah1.1K views
PrintersPrinters
Printers
Samiksha Pun265 views
Laser printer notesLaser printer notes
Laser printer notes
4uraj1.3K views
Printer and it's typesPrinter and it's types
Printer and it's types
ANKITCHAUHAN307844 views

Último(20)

ChatGPT and AI for Web DevelopersChatGPT and AI for Web Developers
ChatGPT and AI for Web Developers
Maximiliano Firtman161 views
The Research Portal of Catalonia: Growing more (information) & more (services)The Research Portal of Catalonia: Growing more (information) & more (services)
The Research Portal of Catalonia: Growing more (information) & more (services)
CSUC - Consorci de Serveis Universitaris de Catalunya59 views
CXL at OCPCXL at OCP
CXL at OCP
CXL Forum203 views

History n Working Of Laser Printer

  • 2. Categories of printer: Impact printer  Non impact printer
  • 3. Laser printer  Laser printer is a non impact printer.  Laser printer stand for light amplification by stimulated emission of radiation.  Laser printer invented by gray Starweather at in 1969 when American Xerox Corporation held a dominant position in the copier market In 1960. Starweather
  • 4. Laser printer contained:  A laser beam which is contain negative charge.  Mirror or lens.  Toner hopper attached with developing roller.  Drum core is called photoreceptor that receptor of light.  Fuser .  Discharge lamp.
  • 5. Steps of printing 1: Charging 2: Exposing 3: Developing 4: Transferring 5: Fusing 6: cleaning
  • 6. Charging:  When data given to the computer then electronics circuit activates Corona wire which is contain positive charge gives to the drum.  When laser beam strike with the drum then erase the positive charge and creates the negative charge .
  • 8. Exposing Corona wire falls positive charge on drum . When laser beams which is contain negative charges fall on drum and strike with on positive charges then erase the positive charges and drawing letters and images which is to be printed on this drum. It is also known as electrostatic images.
  • 9. Developing:  Toner contain a fine black powder. Since it has a positive charge, the toner clings to the negative discharged areas of the drum, but not to the positively charged "background."
  • 10. Transferring: Before the paper rolls under the drum. This charge is stronger than the negative charge of the electrostatic image, so the paper can pull the toner powder away. The photoreceptor is pressed or rolled over paper, transferring the image. The speed of paper passing through drum is very slow and according to the speed of drum.
  • 12.  The paper passes through rollers in the fuser assembly where heat of up to 200 °C (392 °F).  One roller is usually a hollow tube (heat roller) and the other is a rubber backing roller (pressure roller). A radiant heat lamp is suspended in the center of the hollow tube, and its infrared energy uniformly heats the roller from the inside.  Some printers use a very thin flexible metal fuser roller, so there is less mass to be heated and the fuser can more quickly reach operating temperature.  If paper moves through the fuser more slowly, there is more roller contact time for the toner to melt, and the fuser can operate at a lower temperature. Smaller, inexpensive laser printers typically print slowly, due to this energy-saving design, compared to large high speed printers where paper moves more rapidly through a high-temperature fuser with a very short contact time.
  • 13. Cleaning: When the print is complete, discharge lamp removes any electron on photoreceptor.
  • 14. Advantages  It is very fast printer.  It is no noise during the printing.  A typical laser printer provides a resolution of 1200 dpi or more.  It printing speed is higher than inkjet printer.  The black and white printing cost of laser printer is less than inkjet printer