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2D Scanners

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fishei
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19 views1 page

2D Scanners

Uploaded by

fishei
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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2D Scanners YuenHei

History
The xerographic process, which was invented by Chester Carlson in 1938
and developed and commercialized by the Xerox Corporation, is widely
used to produce high-quality text and graphic images on paper. He
originally called the process electrophotographic.

Process
It uses xerography technology to photocopy images and documents. Most
xerography machines have a plate, band, or cylindrical drum coated with a
photoconductive material, like the laser printer, using electrical charges to
input text.

A beam of light is then shone onto the image that is being copied. The
image reflects the light onto the drum, projecting more light from the
whiter parts of the image and no light through the darker parts. It is like the
bar code scanner, using the reflection of lights.

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