Flow Of Image Signals - Canon GP215 Service Manual

3. OPERATIONS AND TIMING
C. Flow of Image Signals
1. Flow of Image Signals from the Printer Board
The PDL data from the host computer is processed into printing images on the Printer Board and sent
to the Protocol Controller PCB as image signals.
The image signals move through the Protocol Controller PCB to reach the CORE/IP Board. After res-
olution conversion, the image signals move to the Image processor PCB for printing.
Shading
Reproduction
correction ratio
Image processor PCB
SCSI board
Memory
Expansion
memory
Memory
Host
computer
3–154
COPYRIGHT © 1996 CANON INC.
Edge
Reversal
emphasis
Binary
Density
processing
correction
(ED)
Resolution
conversion/
memory
repoduction
controller
ratio
Rotation
CIST
Smoothing
CORE/IP Board
SCSI
control
controller
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
Binary
processing
(PD)
Density
Synthesis
correction
D/A
conversion
FAX Board
Coding/
Rotation
decoding
Protocol Controller Board
Memory
Command
conversion
Video
DP
RAM
I/F
controller
Printer Board
Host
computer
LAN
Laser
Telephone
line
NCU
modem
DP
RAM
LAN
controller
NIB