Transcript The basic components of a laser printer

HOW DOES A LASER
PRINTER WORK?
Xiaoxia Zhai
THE BASICS: STATIC
ELECTRICITY
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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.
THE BASIC COMPONENTS
OF A LASER PRINTER
THE BASICS: DRUM
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This drum assembly
is made out of highly
photoconductive
material which can
be discharged by
light photons.
THE BASICS: FUSER
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A fuser is a pair of
heated rollers.
It melts the toner
powder attaching the
powder onto the
paper permanently.
THE LASER SCANNING
ASSEMBLY
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A Laser
A Movable Mirror
A Lens
TONER BASICS
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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.
THE CONTROLLER
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The Conversation
Page Description Language
Setting Up The Page
COLOR LASER
PRINTERS
ADVANTAGES OF
LASER PRINTERS
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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.
REFERENCES
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Flash Magazine Editorial, The Underground
Guide To Laser Printers, Addison-Wesley Pub
Co; 1993.
The PC Technology Guide,
http://www.pctechguide.com
How Stuff Works,
http://computer.howstuffworks.com