Canon imageRUNNER ADVANCE 4551i Service Manual page 766

COPIER > OPTION > IMG-RDR
DF2DSTL1 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
Supplement/Memo
DF2DSTL2 1
Detail
Use Case
Adj/Set/Operate Method
Caution
Display/Adj/Set Range
Default Value
Supplement/Memo
■ IMG-MCON
COPIER > OPTION > IMG-MCON
PASCAL 1
Detail
Use Case
Adj/Set/Operate Method
Display/Adj/Set Range
Default Value
ON/OFF img crrct: stream, back, 1-path
To set whether to perform image correction between originals in the Scanner Unit (for back side)
at stream reading with DADF (1-path model) based on the result of dust detection.
Set one of 1 to 255 when black lines appear. Dust detection is performed and image is corrected
as needed.
Set 0 if a fine image portion is unclear as a result of dust detection correction control. In that case,
dust detection is not performed.
Upon user's request
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
0 to 255
0: OFF, 1 to 255: ON
200
Black lines may appear on the image if there is dust. With dust detection correction control, the
image is corrected to prevent black lines once dust is detected.
Adj dust dtct level:stream, back, 1-path
To adjust dust detection level for dust avoidance control that is executed in the Scanner Unit (for
back side) at the first stream reading with DADF (1-path model) after power-on.
Decrease the value in the case of frequent display of cleaning instruction at the time of dust
detection. As the value is smaller, dust is less likely to be detected. When 0 is set, the cleaning
instruction is not displayed.
Increase the value when black lines appear. As the value is larger, the small dust is more likely to
be detected.
- When black line appears due to dust
- Upon user's request
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
If the value is too large, the cleaning instruction screen may appear too often since even small dust
that will not appear on the image can be detected.
If the value is too small, black lines may appear on the image.
0 to 255
0: OFF
200
Black lines may appear on the image if there is dust. With the dust avoidance control executed at
start of the first job after power-on, reading position is adjusted to minimize dust to be least
detected.
Use/no use of auto gradation adj data
To set to use/not to use the gradation adjustment data gamma LUT that is generated by auto
gradation adjustment (Full/Quick Adjust) control.
Selection is available as to whether to use gamma LUT at the time of image formation.
When PASCAL-related failure occurs/when identifying the cause of PASCAL-related failure
1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
0 to 3
0: Initial LUT is used. (Automatic gradation adjustment is not used.)
1: Auto gradation adjustment is used.
2 to 3: Not used
1
753
8. Service Mode