Scanner System; Scanner System Overview; Scanning System Components - Samsung CLX-9201 Service Manual

2.9. Scanner System

This section describes the printer scanner system parts and functions.

2.9.1. Scanner System Overview

During the scanning process, the surface of a document is exposed to Full Rate(FR) module light.
The light reflected from the paper is led through mirrors, a lens, and a slit to a CCD where optical-to-electrical conversion is
performed, converting the optical image data into an electrical (analog) signal.
This analog signal is changed to a digital signal, which then undergoes various corrective processes necessary for image
formation. After that, arithmetic operations are performed on the digital signal, which is then transmitted to the data
writing processor.
In this machine, a reduction-type CCD for color processing is used. CCD is arranged in 3 lines and covered with color
filters (Red, Green, and Blue).

2.9.2. Scanning System Components

The following shows the construction and purpose of the scanning system :
1) DADF glass
The DADF glass is used when a document is read by the Automatic Document Feeder. The light from the White-LED is
illuminated on the Document through this glass.
The document is transported on the DADF glass by the DADF operation.
Do not use such solvents, as alcohol when cleaning the surface of the DADF glass, as it is coated so as not to be
scratched by Document.
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2. Product Specifications and Description
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