Canon GP605 Service Manual page 174

CHAPTER 6 IMAGE FORMATION SYSTEM
When the source of paper is selected, the signal
is generated to start advance pickup.
Potential control is used during INTR for
the following:
1. 10 min after the main power switch
has been turned on.
2. 60 min after the main power switch
has been turned on.
Copy Start
key ON
Main motor (M1)
Drum motor (M0)
Potential sensor
Pre-exposure lamp
Primary charging
bias (DC)
Grid bias
Developing clutch
(CL4)
Developing bias
(AC)
Developing bias
(DC)
Dust-collecting
roller bias (DC)
Pre-transfer
charging bias
(AC + DC)
Transfer guide bias
(DC)
Transfer charging
bias (DC)
Separation
charging bias
(AC + DC)
Figure 6-103 Basic Sequence of Operations (Printing)
6-4
COPYRIGHT © 1999 CANON INC.
PRINT PRINT request
setting set signal
INTR
STBY
PSTBY
Before forming an image, a series of
charging operations is executed to
stabilize the potential of the drum.
For 4-on-1 or other layout processing, the signal
is generated after reading all originals.
Printing is ready after a single line of data has been
written in the page memory, generating this signal.
SCFW SCRV
PRINT
During continuous printing, the high
voltage is not turned off even between
sheets to stabilize high-voltage output.
Image formation 2
Image formation 1
DC for image
formation
CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
RSTBY
STBY
LSTR