Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 476

COPIER> ADJUST> FEED-ADJ
TBLT-SPD Fine adjustment of ITB speed
Lv.1 Details To make a fine adjustment of the ITB speed to alleviate blur image
(random uneven pitch).
When the speed is changed, image magnification in the vertical
scanning direction is changed.
As the value is incremented by 1, speed of the ITB Drive Motor is
increased by 0.025%.
+: The speed is increased.
-: The speed is decreased.
Increase the speed (1 to 4) when blur image occurs.
The adjustment result is reflected to 1/1 speed, 1/2 speed, and 1/3
speed.
Use case When blur image (random uneven pitch) occurs
Adj/set/operate method 1) Enter the setting value (1 to 4; switch negative/positive by -/+ key)
and press OK key.
2) Output an halftone image.
If blur image is alleviated, execute step 3 and later. If not, change
the setting value to 5 to 8, and check again.
3) As needed, change the magnification in the vertical scanning
direction in "Fine Adjust Zoom" in user mode.
4) As needed, change the leading edge margin with REGIST in
service mode.
5) Adjust the color displacement in the vertical scanning direction in
"Auto Correct Color Mismatch" in user mode.
Caution • The operation is enabled when the setting value of COPIER >
OPTION > IMG-TR > ITB-TYPE is "1".
• If the setting value is out of the range between -4 and 0, banding
of other pitch might get worse.
5
• After execution, check magnification in the vertical scanning
direction and leading edge margin, and then execute auto
registration.
Display/adj/set range -30 to 30 (-30 to -9, 9 to 30: Not used)
Unit 0.03%
Appropriate target value 0 to 4
Default value 0
Related service mode COPIER> OPTION> IMG-TR> ITB-TYPE
COPIER> ADJUST> FEED-ADJ> REGIST
Related user mode Preferences > Paper Settings > Set Paper Type Management >
Details/Edit > Adjust Image Position > Fine Adjust Zoom
Adjustment/ Maintenance> Adjust Image Quality> Auto Correct Color
Mismatch
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COPIER> ADJUST> FEED-ADJ
REG-DUPS Rgst start tmg: Coated(2nd), 1/3 ,1/2SPD
Lv.1 Details To adjust the top margin by changing the timing to turn ON the
Registration Motor when feeding coated paper at 1/3 speed.
As the value is incremented by 1, the margin on the left edge of
paper is increased by 0.1 mm.
+: Top margin becomes smaller. (An image moves upward.)
-: Top margin becomes larger. (An image moves downward.)
When Productivity Priority mode is selected in user mode, timing to
turn ON at 1/2 speed is changed and the margin is adjusted.
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
Display/adj/set range -50 to 50
Unit 0.1 mm
Related user mode Function Settings > Common > Print Settings > Coated Productivity/
Image Quality Priority
T-5-41