HOW DOES A LASER PRINTER WORK?

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HOW DOES A LASER PRINTER WORK?

• Xiaoxia Zhai

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THE BASICS STATIC ELECTRICITY

• The laser printing process is based on some very
  basic scientific principles applied in an
  exceptionally innovative way.
• The primary principle at work in a laser printer
  is static electricity.

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THE BASIC COMPONENTS OF A LASER PRINTER
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THE BASICS DRUM

• This drum assembly is made out of highly
  photoconductive material which can be discharged
  by light photons.

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THE BASICS FUSER

• A fuser is a pair of heated rollers.
• It melts the toner powder attaching the powder
  onto the paper permanently.

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THE LASER SCANNING ASSEMBLY

• A Laser
• A Movable Mirror
• A Lens

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TONER BASICS

• A toner consists of a dry, powdery substance that
  is electrically charged so that it adheres to a
  drum, plate, or piece of paper charged with the
  opposite polarity.
• The powder has two main ingredients pigment and
  plastic.

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THE CONTROLLER

• The Conversation
• Page Description Language
• Setting Up The Page

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COLOR LASER PRINTERS
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ADVANTAGES OF LASER PRINTERS

• Three main advantages of a laser printer over an
  inkjet printer speed, precision and economy.
• It writes much faster than an inkjet, because
  laser moves quickly.
• It draws precisely without spilling excess
  powder.
• It costs little to keep a laser printer running.

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REFERENCES

• Flash Magazine Editorial, The Underground Guide
  To Laser Printers, Addison-Wesley Pub Co 1993.
• The PC Technology Guide, http//www.pctechguide.co
  m
• How Stuff Works, http//computer.howstuffworks.com