Canon IMAGERUNNER 7095 PRINTER, Руководство по обслуживанию

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Chapter 5
5-2
5.1.2 Specifications, Controls, and Functions <iR7086>
0011-1804
The specifications, controls, and functions of the machine's original exposure system are as follows:
T-5-2
5.1.3 Major Components <iR7105/7095>
0010-7882
The major components of the original exposure system are as follows:
T-5-3
Item Description
Scanning lamp xenon lamp
Original scanning book mode: by moving the scanner
ADF mode: by moving original
Original reading
resolution 600 x 600 dpi (main scanning x sub scanning)
Halftone 256 gradations
Scanning position
detection by scanner HP sensor
lens single-focal point, fixed type
Magnification [1] in platen mode: 25% to 400%
main scanning direction: image processing by controller block
sub scanning direction: scanning speed variation (No. 1 mirror base;
100% or higher)
in combination with image processing by reader block (50% or higher
and lower than 100%)
in combination with image processing in reader block and controller
block (lower than 50%)
[2] ADF mode: 25% to 200%
main scanning direction: image processing in controller block
sub scanning direction: original movement speed variation (50% or
higher); in combination with image processing in controller block
(lower than 50%)
Scanner drive control No. 1/2 mirror base: control by pulse motor
Scanning lamp
control [1]activation control by pulse motor
[2]error detection control
Original size
detection [1]book mode
sub scanning direction: by reflection type sensor
main scanning direction: by CCD
[2] ADF mode
main scanning direction: by slide guide in ADF
sub scanning direction: by photosensor in ADF
Item Notation Description
Scanning lamp LA1 xenon lamp (120,000 lx)
Scanner motor M501 2-phase pulse motor (pulse control)
Reader Cooling fan 1 FM501 cools the reader block
Reader Cooling fan 2 FM502 cools the reader block
ADF open/closed sensor PS501 detects the state (open/closed) of the ADF; at 25 deg
Scanner HP sensor PS502 detects scanner home position
Original size sensor (AB) --- detects the size in sub scanning direction (AB-configuration)
Original size sensor (inch) --- detects size in sub scanning direction (inch)
Mirror --- No. 1, 2, 3 mirrors
Inverter PCB --- drives the scanning lamp
CCD unit --- collects image data, performs analog image processing
Reader controller PCB --- controls the reader unit as a whole, performs digital image processing