Canon imagePRESS 1135 Series Service Manual page 1120

COPIER> ADJUST> DENS
P-DHALF Dhalf bright dens convert table fine adj
Lv.1 Details To make a fine adjustment of brightness density conversion table
that is used at the D-half control (display/adjustment).
Use case • When the halftone density is out of the specified range even
though there is no issue on the high-voltage or the developing
assembly.
• When the solid density is within the specified range while the
halftone density is out of the specified range after the replacement
of sensor or extended use.
Adj/set/operate method 1) Check that the halftone density change is due to patch detection
(high-voltage etc.)
2) Check that the solid density is within the specified range.
3) Enter the setting value and press OK key.
4) Execute D-half control.
5) Check the halftone density in the user indication chart.
Caution D-half control is only effective at COPY/AdobePS&PDF/EFI.
Display/adj/set range -16 to 16
Appropriate target value -4 to 4
Default value 0
Related service mode COPIER> FUNCTION> MISC-P> DHALF
P-B-TGT Fine adj of Dmax/Dhalf LED light target
Lv.2 Details To make a fine adjustment of the target value of LED light intensity
adjustment that is used at D-max control and D-half control (display/
adjustment).
If the LED is strong, set the smaller value and if it is weak, set the
greater value.
Use case When continuously using the machine tentatively regardless of the
rough background, sensor dirt or sensor life.
Adj/set/operate method 1) Check that the density change is due to patch detection (high-
voltage etc.)
2) Check that the result of LED light intensity correction is out of
specified range.
3) Enter the setting value and press OK key.
4) Execute the D-max control manually.
5) Check the density of solid area of 17 gradations.
Display/adj/set range 0 to 1023
Appropriate target value 650 to 850
Default value 716
Related service mode COPIER> DISPLAY> DENS> P-LED, P-B-AVE
8
Service Mode > COPIER > ADJUST (Adjustment Mode) > DENS
8 Service Mode > COPIER > ADJUST (Adjustment Mode) > DENS
COPIER> ADJUST> DENS
DMAX-N-T Fine adj of Dmax dens target: quality PP
Lv.2 Details To make a fine adjustment of density target value that is used at the
D-max control for high quality paper group (display/adjustment).
Use case When adjusting the density only for the quality paper group (density
is normally adjusted by DUPDWN/P-OFFSET value).
Adj/set/operate method 1) Check that the density change is due to patch detection (high-
voltage etc.)
2) Check that the density adjustment is only required for the quality
paper group.
3) Enter the setting value and press OK key.
4) Execute the D-max control manually.
5) Check the density of solid area of 17 gradations.
Display/adj/set range 0 to 1023
Appropriate target value 800 to 970
Default value 950
Related service mode COPIER> FUNCTION> MISC-P> DMAX-N
COPIER> DISPLAY> DENS> DMAX-N
COPIER> ADJUST> DENS> P-OFFSET
Supplement/memo Quality paper group: high-quality paper/recycle paper/texture paper/
labels/post cards/cotton
DMAX-S-T Fine adj of Dmax dens target: coat paper
Lv.2 Details To make a fine adjustment of density target value that is used at the
D-max control for coated paper group (display/adjustment).
Use case When adjusting the density only for the coated paper group (density
is normally adjusted by DUPDWN/P-OFFSET value).
Adj/set/operate method 1) Check that the density change is due to patch detection (high-
voltage etc.)
2) Check that the density adjustment is only required for the coated
paper group.
3) Enter the setting value and press OK key.
4) Execute the D-max control manually.
5) Check the density of solid area of 17 gradations.
Display/adj/set range 0 to 1023
Appropriate target value 800 to 970
Default value 900
Related service mode COPIER> FUNCTION> MISC-P> DMAX-S
COPIER> DISPLAY> DENS> DMAX-S
COPIER> ADJUST> DENS> P-OFFSET
Supplement/memo Coated paper group: 1-sided coat/2-sided coat/vellum/films
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