Canon imageRUNNER ADVANCE C350 series Service Manual page 914

COPIER> OPTION> IMG-DEV
DMX-OF-C Adj of C-color D-max target density
Lv.2 Details To adjust the target density of D-max control in case that density of
solid area on C-color image is not appropriate even performing auto
gradation adjustment.
Increase the value when the density is low and decrease the value
when the density is high.
Use case When density of solid area is not appropriate even performing auto
gradation adjustment
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key), and
then press OK key.
2) Turn OFF/ON the main power switch.
3) Execute full adjustment of auto gradation adjustment.
Display/adj/set range -3 to 3
Default value 0
Related UI menu Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation> Full Adjust, Quick Adjust
DMX-OF-K Adj of Bk-color D-max target density
Lv.2 Details To adjust the target density of D-max control in case that density of
solid area on Bk-color image is not appropriate even performing auto
gradation adjustment.
Increase the value when the density is low and decrease the value
when the density is high.
Use case When density of solid area is not appropriate even performing auto
gradation adjustment
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key), and
then press OK key.
2) Turn OFF/ON the main power switch.
3) Execute full adjustment of auto gradation adjustment.
Display/adj/set range -3 to 3
Default value 0
Related UI menu Adjustment/Maintenance> Adjust Image Quality> Auto Adjust
Gradation> Full Adjust, Quick Adjust
8
Service Mode > COPIER > OPTION > IMG-DEV
8 Service Mode > COPIER > OPTION > IMG-DEV
COPIER> OPTION> IMG-DEV
ADJ-VPPN Adj of dev AC bias Vpp: plain/rcycl3,etc
Lv.2 Details To adjust the Vpp of the developing AC bias when printing plain
paper 1, 2/recycled paper 1, 2 (which paper width is smaller than that
of A4), plain paper 3, or recycled paper 3.
As the value is incremented by 1, Vpp changes by 0.5 kV.
Decrease the value when fogging/bias leak/high density occurs.
Use case When an image failure (carrier adherence, ring marks, etc.) occurs
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Execute Auto Adjust Gradation> Full Adjust.
Caution If the value is too small, the contrast becomes weak.
Display/adj/set range 0 to 5
0: +/-0 V, 1: -100 V, 2: -200 V, 3: -300 V, 4: -400 V, 5: -500 V
Unit 100 V
Appropriate target value 0
Default value 0
Related service mode COPIER> OPTION> IMG-DEV> ADJ-VPP, ADJ-VPP3
DEVL-THY Set toner ejectn img duty threshold (Y)
Lv.2 Details To set the threshold value for average image ratio where Y-toner
ejection is executed.
As the value is larger, coarseness is decreased, but productivity is
lowered and toner consumption is increased.
As the value is smaller, productivity and toner consumption are
improved, but coarseness is worsened.
Use case While printing low duty (low image ratio) images,- When graininess
(coarseness) or decrease in density occurs- When low productivity
or high toner consumption is pointed out by the user
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -2 to 5
-2: -0.2, -1: -0.1, 0: 0, 1: +0.5, 2: +1.0, 3: +1.5, 4: +2.0, 5: +3.0
Default value 0
DEVL-THM Set toner ejectn img duty threshold (M)
Lv.2 Details To set the threshold value for average image ratio where M-toner
ejection is executed.
As the value is larger, coarseness is decreased, but productivity is
lowered and toner consumption is increased.
As the value is smaller, productivity and toner consumption are
improved, but coarseness is worsened.
Use case While printing low duty (low image ratio) images,- When graininess
(coarseness) or decrease in density occurs- When low productivity
or high toner consumption is pointed out by the user
Adj/set/operate method Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
Caution Do not use this when the machine is operating correctly.
Display/adj/set range -2 to 5
-2: -0.2, -1: -0.1, 0: 0, 1: +0.5, 2: +1.0, 3: +1.5, 4: +2.0, 5: +3.0
Default value 0
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