Construction - Canon imagePRESS C1 P Service Manual

5.1 Construction

5.1.1 Specifications, Control Mechanisms, and Functions
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The original scanning system is characterized by the following specifications, control mechanisms, and functions:
Item
Scanning lamp
Original scan
Reading resolution
Number of gradations
Scanner position detection
Lens
Magnification
Scanner drive control
Scanning lamp activation control
Original size identification
5.1.2 Major Components
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The scanning system consists of the following major components:
Scanning lamp
Scanner motor
Reader cooling fan 2
Reader cooling fan 1
ADF open/closed sensor
Scanner HP sensor
Original size sensor (AB-configuration)
Original size sensor (INCH-configuration)
Mirror
Inverter PCB
CCD unit
reader controller PCB
xenon lamp
book mode: scanning by moving the scanner
ADF in use (simplexing): scanning by moving the original (stream reading mode)
ADF in use (duplexing): scanning by moving the scanner (copyboard mode)
600 (main scanning) x 600 dpi (sub scanning)
256
by scanner HP sensor
single-focus, fixed in place
copyboard mode: 100%, 50%
ADF mode: 100%, 50%
sub scanning direction: image processing by controller
main scanning direction: image processing by controller
No. 1/No. 2 mirror base: by pulse motor
[1] by inverter circuit
[2] by error detection
[1] Book Mode
sub scanning direction: image processing by controller
main scanning direction: by CCD
[2] ADF in Use
main scanning direction: by slide guide in ADF
sub scanning direction: by photosensor in ADF
Item Notation
LA1
M501
FM1
FM2
PS501
PS502
CF1
CF2
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T-5-1
Description
T-5-2
Description
xenon tube (120,000 lx)
2-phase pulse motor (pulse control)
cools the reader unit (if DF present)
cools the reader unit (if DF present)
ADF state (open/closed) detection (at angle of 25 deg)
detects scanner home position
detects size in sub scanning direction (AB-configuration)
detects size in sub scanning direction (INCH-configuration)
No. 1/No. 2/No. 3 mirror
operates scanning lamp
reads images, processes analog image data
controls reader as a whole, processes digital image data
Chapter 5
0012-5813
0012-5815
5-1