Samsung MULTIXPRESS CLX-9251 Series Service Manual

Also see for CLX-9201 Series: User guide User guide Service manual

2. Product Specifications and Description2.9. Scanner SystemThis section describes the printer scanner system parts and functions.2.9.1. Scanner System OverviewDuring 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 isperformed, 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 imageformation. After that, arithmetic operations are performed on the digital signal, which is then transmitted to the datawriting processor.In this machine, a reduction-type CCD for color processing is used. CCD is arranged in 3 lines and covered with colorfilters (Red, Green, and Blue).2.9.2. Scanning System ComponentsThe following shows the construction and purpose of the scanning system :1) DADF glassThe DADF glass is used when a document is read by the Automatic Document Feeder. The light from the White-LED isilluminated 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 bescratched by Document.Copyright© 1995-2016 SAMSUNG. All rights reserved. 2-63