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Technical Overview > Document Exposure/Feeder System > Document Exposure System > Major Components
Technical Overview > Document Exposure/Feeder System > Document Exposure System > Major Components
Document Exposure/Feeder System
Document Exposure System
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Overview
item
function / method
document exposure
LED
document scan
Book mode: scan by the shift of the contact Book mode: scan by the shift of
the contact sensor (CS)
SADF/DADF: document stream reading by fixed contact sensor (CS)
Copey Board
Scanning resolution
600 dpi X 600 dpi
ADF
scanning resolution
300 dpi X 300 dpi
number of gradations 256 gradations
magnification
50% to 400%
horizontal: image processing by Main controller PCB
vertical: change of carriage shift speed, image processing by Main controller
PCB
lens
rod lens array
CMOS sensor
number of lines: 1 line
number of pixels: 5184 pixels as total pixels (5126 pixels as effective pixels)
maximum document scanning width: 216 mm
CS drive control
drive control by Reader motor
document size
detection
none
T-2-2
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Major Components
Followings are the major components for Document Exposure System.
• The contact sensor to scan document
• The Reader motor, the drive pulley, the drive belt, to shift the contact sensor
In image scanning control, the contact sensor is shifted by rotating the Reader motor based
on the drive signal from the SCNT PCB and scan the original on the copyboard glass. When
ADF is in use, image is scanned by feeding the originals by ADF instead of shifting the
contact sensor.
Drive belt
Drive pulley
Drive pulley
Contact sensor
Reader motor
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