| First
developed at
Xerox PARC
by Gary Starkweather and released
in 1971, a laser printer is a
type of printer that
utilizes laser technology to print images on the paper. Laser
printers are often used in corporate, school, and other
environments that require print jobs to be completed quickly
and in large quantities.
To the right is an example of what a laser printer may look
like. This picture is of the Lexmark C782n laser printer.
Finally, below is a chart of the steps a laser printer takes
to print. |
 |
|
STEP |
WHAT IT DOES |
| Cleaning |
Removes prior image information and toner from the
drum. |
| Conditioning |
Applies a uniform negative charge to the
drum. |
| Writing |
Light source such as lasers, LED, or LCS (Liquid Crystal Shutter) write to areas on
the drum discharging the negative potential where it hits. |
| Developing |
The toner is ionized with a negative charge and is attracted to the areas previously
written (discharged) on the drum. |
| Transfer |
The toner of the drum is transferred to the paper by either a positively ionized field
(created by a transfer corona wire) or by a transfer roller in newer printers. The toner
is not yet permanently set on the paper and requires the last stage. |
| Fusing |
Heat and pressure are applied to the paper and toner. The toner melts and then is
pressed to the paper like doing an iron-on transfer to a T-shirt. |
- Additional information and help with
computer printers can be found on our
printer
help page.
Also see: Laser, LaserWriter,
Page printer, Printer,
Printer definitions,
Toner
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| Resolved |
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