Canon imageRUNNER ADVANCE C5255 Series Service Manual page 995

■ IMG-MCON
COPIER > OPTION > IMG-MCON
PASCAL Use/no use of auto gradation adj data
Lv.1 Details To set to use/not to use the gradation adjustment data gamma LUT
that is generated by auto gradation adjustment (full/quick adjustment)
control.
Selection is available as to whether to use gamma LUT at the time of
image formation.
Use case When PASCAL-related failure occurs/when identifying the cause of
PASCAL-related failure
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 3
0: Initial LUT is used. (Auto gradation adjustment is not used.)
1: Auto gradation adjustment is used.
2 to 3: Not used
Default value 1
SCR-SLCT Halftone process in Photo Printout mode
Lv.2 Details To set halftone process (error diffusion, screen 2 types) in Photo
Printout mode when making a copy.
Change the setting if the copy image has a problem with the initial
setting (Low screen ruling).
Select 0 (error diffusion) in the case of moire (suitable for character
reproduction).
Select 2 (High screen ruling) in the case of rough dots.
Use case When moire image or rough dots occurs on copy image
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 2
0: Error diffusion, 1: Low screen ruling, 2: High screen ruling
Default value 1
TMC-SLCT Setting of error diffusion coefficient
Lv.2 Details To set coefficient to be used for error diffusion process.
Specify according to the level of granularity and dot stability.
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 0 to 2
0: Small granularity/low dot stability
1: Small granularity/low dot stability (color mode), Large granularity/
high dot stability (black mode)
2: Large granularity/high dot stability
Default value 2
8
Service Mode > COPIER > OPTION > IMG-MCON
8 Service Mode > COPIER > OPTION > IMG-MCON
COPIER > OPTION > IMG-MCON
PRN-FLG Select of image area flag (PDL image)
Lv.2 Details To set the image area flag for the image processing which is
performed when a PDL image fails to be compressed at a specified
compression rate.
If an image fails to be compressed at a specified compression rate,
the following operations are performed as default:
- Processing to prioritize reproduction of text
- Replacing Bk-color to black plain color
Set 1 when moire occurs or jaggy is significant.
Set 2 when not preferring to replace Bk color with single Bk color.
Use case - When moire occurs or jaggy is significant in case of printing an
image containing many halftone dots or photos
- When avoiding to replace Bk-color with single black color
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution This setting trades off with reproducibility of text.
Display/adj/set range 0 to 2
0: High screen ruling, gray compensation LUT
1: Error diffusion, gray compensation LUT
2: High screen ruling, normal LUT
Default value 0
SCN-FLG Select of image area flag (copy image)
Lv.2 Details To set the image area flag for the image processing which is
performed when a scanned image fails to be compressed at a
specified compression rate.
If an image fails to be compressed at a specified compression rate,
processing to prioritize reproduction of text is performed by default.
Set 1 when an image contains many halftone photo images.
Set 2 when an image contains many printed photos.
Use case When copying an image which contains many halftone dots and
photos
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution This setting trades off with reproducibility of text.
Display/adj/set range 0 to 2
0: Text
1: Halftone photo image
2: Printed photos
Default value 0
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