Image Stabilization Control; Outline Of Image Quality Control; Automatic Image Stabilization Control - Canon iR C3200 Series Service Manual

9.4 Image Stabilization Control

9.4.1 Outline of Image Quality Control

Changes in temperature/humidity or passage of time can cause the machine to produce images of varying quality. To
ensure that the quality of images remain stable, the levels of voltage outputs and volumes of toner supply are
corrected:
So that the machine's image
reproduction remains stable, the
following control mechanisms are
used:
ATR Control
Discharge Current Level Control
ATVC Control
PASCAL Control/SALT Control

9.4.2 Automatic Image Stabilization Control

Operation
Power-on/
jam
recovery
Discharge ATVC ATR
current control control
level
control
- if fixing roller surface temperature >= 100 deg C
YES YES NO
- if fixing roller surface temperature < 100 deg C
YES YES YES
T-9-17
to suit changes in toner density/toner
consumption
to prevent faulty images in a high humidity
environment
(correction of charging AC bias)
to ensure good transfer
(correction of transfer bias level)
to suit changes in image density and gradation
(correction of charging/developing/transfer bias;
correction of image correction table)
T-9-18
SALT- Image
Dmax position
control correction
NO YES
YES YES
Chapter 9
0000-4486
0000-4487
SALT- Estimated
Dhalf duration
control (sec)
NO about 80 *6
YES about 240
*7
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