Canon imagePRESS C1 Service Manual - page 280
Chapter 5
5-1
5.1 Construction
5.1.1 Specifications, Control Mechanisms, and Functions
0012-5813
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:
T-5-1
5.1.2 Major Components
0012-5815
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The scanning system consists of the following major components:
T-5-2
Item
Description
Scanning lamp
xenon lamp
Original scan
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)
Reading resolution
600 (main scanning) x 600 dpi (sub scanning)
Number of gradations
256
Scanner position detection
by scanner HP sensor
Lens
single-focus, fixed in place
Magnification
copyboard mode: 100%, 50%
ADF mode: 100%, 50%
sub scanning direction: image processing by controller
main scanning direction: image processing by controller
Scanner drive control
No. 1/No. 2 mirror base: by pulse motor
Scanning lamp activation control
[1] by inverter circuit
[2] by error detection
Original size identification
[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
Description
Scanning lamp
LA1
xenon tube (120,000 lx)
Scanner motor
M501
2-phase pulse motor (pulse control)
Reader cooling fan 2
FM1
cools the reader unit (if DF present)
Reader cooling fan 1
FM2
cools the reader unit (if DF present)
ADF open/closed sensor
PS501
ADF state (open/closed) detection (at angle of 25 deg)
Scanner HP sensor
PS502
detects scanner home position
Original size sensor (AB-configuration)
CF1
detects size in sub scanning direction (AB-configuration)
Original size sensor (INCH-configuration)
CF2
detects size in sub scanning direction (INCH-configuration)
Mirror
---
No. 1/No. 2/No. 3 mirror
Inverter PCB
---
operates scanning lamp
CCD unit
---
reads images, processes analog image data
reader controller PCB
---
controls reader as a whole, processes digital image data