Other Controls - Canon imageRUNNER ADVANCE C3500 III Series Service Manual

Related service mode
• Display of the ITB rear side background light intensity (P-wave):
COPIER > DISPLAY > DENS > P-B-P-Y
• Display of the ITB front side background light intensity (P-wave):
COPIER > DISPLAY > DENS > P-B-P-C
• Display of the ITB rear side background light intensity (S-wave):
COPIER > DISPLAY > DENS > P-B-S-Y
• Display of the ITB front side background light intensity (S-wave):
COPIER > DISPLAY > DENS > P-B-S-C
■ Auto Gradation Adjustment (PASCAL) Control
Purpose
Gradation density characteristics on the image are stabilized.
This control is executed when "Auto Adjust Gradation > Full Adjust" is selected in the Settings/Registration menu. Gradation
density of the patch pattern on the test print is scanned by the Reader to create an image density correction table.
The foregoing table corrects image gradation density characteristics which change according to the environment change and
deterioration of the Photosensitive Drum.
Control timing
When Settings/Registration > Adjustment/Maintenance > Adjust Image Quality > Auto Adjust Gradation > Full Adjust is being
executed
Control description
1. When the specified conditions are satisfied, the Main Controller PCB prints 3 types of memorized test prints (patch pattern).
2. Place the test prints in the Reader.
3. The reader scans the gradation density of the patch pattern from the test prints.
4. The Main Controller PCB creates an image gradation density correction table from the gradation density data of patch pattern
scanned by the Reader.
Related service mode
• Setting of auto gradation adjustment target selection screen:
COPIER > OPTION > DSPLY-SW > HPFL-DSP

Other Controls

■ Special Controls
This machine has the following sequences as the special sequence.
Reader
Printer
PASCAL control
Black Band Sequence
Solid black band
88
Patch image data
Developing Discharge
Sequence
Solid color band (Y/M/C/BK)
2. Technology