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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
■
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 xed contact sensor (CS)
scanning resolution
600 dpi (horizontal scanner) X 600 dpi (vertical scanner)
number of gradations
256 gradations
magnication
50% to 200%
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: 5148 pixels as total pixels (5107 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
F-2-5
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