During Copying/Printing Operations (Normal Speed) - Canon imagerunner C5180 Service Manual

Chapter 9

9.3.3 During Copying/Printing Operations (normal speed)

Full color, Plain paper, A4, 2 copies/prints, Y drum unit
Characteristics
- in response to a press on the Start key, the intermediate transfer belt (ITB) stars to rotate.
- the sequence of operations for drum units after exposure starts with a delay of 0.7 sec each
- the ITB continues to rotate after delivery of paper from the fixing unit (for post-imaging control)
PSTBY
Drum/ITB
motor (M1)
Exposure (Y)
Charging (DC)
bias (Y)
Charging (AC)
bias (Y)
Development
motor (Y)
Developing (DC)
bias (Y)
Developing (AC)
bias (Y)
Upstream auxiliary (DC)
bias (Y)
Upstream auxiliary (AC)
bias (Y)
Downstream auxiliary (DC)
bias (Y)
Primary transfer
bias (Y)
Secondary
transfer bias
1 :
When Making Y/M/C Monochrome Copies/Prints
If not for Bk (i.e., for Y, M, C), a high voltage is applied for the 4 colors as for full-color output when making
monochrome copies/prints. (Exposure is not executed for colors other than those in question.)
When Making Bk Monochrome Copies/Prints
When making Bk monochrome copies/prints, no high voltage is applied for Y or M, and the developing
motors for these colors are not driven.
9-12
Y Drum Unit Sequence of Image Formation (plain paper)
Start key
ON
PINTR PRINT
Approx. 2.4sec
Approx. 2sec
LSTR
Approx. 8.5sec
Scraping off toner
by auxiliary brush
Scraping off toner
by auxiliary brush
F-9-8
PSTBY
Cleaning by second-
ary transfer roller