Canon imagePRESS C1 Service Manual - page 70
Chapter 1
1-28
1.2.3.20 User Administrator Mode
0020-9178
imagePRESS C1+ (Printer) / imagePRESS C1+
This part outlines the user administrator mode.
User administrator mode provides the adjustment function to User Administrator, who is superior to general user, and the function is classified mainly into 2 settings.
1. Device Management Setting
This setting enables to adjust color characteristics such as gradation, toner density, color and image quality, to realize an optimal image even under the influence
of every variation factor such as environmental change and aged deterioration.
This setting can be found in the following menu tree of the panel setting display:
- Initial Setup/Save Key > System Control Settings > Device Management Settings
The details of each setting are shown in the following table.
T-1-22
Panel
Display
Item
Setting
Objective
Use/Suppl.
Service Mode
Default
Display
Auto Gradation
Adjustment
Full Adjust./Quick Adjust./
Auto Gradation Adjust
Method
In a copy/ print job without special settings, adjust
gradation, density or hue to reproduce the original image.
Default
Display
Shading
Correction
Correction with
Densitometer/ Visual
Correction/ Correction by
Print server*2
Improve minor shading typically appeared in the halftone
area of a printed image.
Default
Display
Dither Pattern
Setting (to
Switch Dither)
Gradation (For Printer)/
Resolution (For Printer)/
Reproduction of Scan Image:
Newspaper/ Gradation/ High
gradation/ Color tone/ High
resolution/ Reproduction of
Scan Image, Compatible
Select a dither pattern. Dither means a technique to
express colors/gradation by small dots. The source data
for a dotted image is called 'dither pattern'. By changing
this, expression of a printed image can be modified.
Change this setting if
Sample G of the faulty
images appears. The
setting of Resolution
should be changed
from 'High Resolution'
to 'High Detail' or
'Hue'.
Displayed by
Service
Switch (*1)
Color Balance
Fine-adjustment of toner
density each for Yellow,
Magenta, Cyan and Black: -8
to 0* to +8 (by 1)
Adjust the color balance or fine-adjust the default density
for Yellow, Magenta, Cyan and Black.
Displayed by
Service
Switch (*1)
Exposure
Recalibration
when Scanning
Left edge: 0~5 (*0)Right
edge: 0~5 (*0)
This will be enabled
after the main power is
turned OFF/ON.
Displayed by
Service
Switch (*1)
Density
Adjustment
Mode
A*/B Modes (refer to *3)
Switch the methods to control toner density.
Displayed by
Service
Switch (*1)
Refresh the
Fixing Roller
Start key
Slightly glossy lines in parallel of the feed direction
sometimes appear on the both ends of wider-width paper
after copying/ printing over hundreds sheets of narrower-
width paper (ex: using A3 after A4R). Specifically in the
high-density area on heavy/coated paper, cloudlike glossy
shading appears occasionally. Refreshing the fixing roller
and/or wiping the surface of the roller can improve these
symptoms.
This setting should be
set to ON if Sample F
of the faulty images
appears.
Displayed by
Service
Switch (*1)
Fixing Roller
Auto Refresh
Level
Level: -5 to +5 (0*)
The fixing roller is automatically refreshed after a certain
copies are printed. This mode provides adjustment in
refreshing frequency and time level for refreshing
operation.
Displayed by
Service
Switch (*1)
Color Cast
Correction
Yellow, Magenta, Cyan,
Black: -2 to +2 (0*)
When 'color cast' is seen in blank area, this can be
corrected by color with this function.
This setting should be
set to ON when Sample
D of the faulty images
appears.
COPIER >
ADJUST > V-
CONT >
VBACK-Y
,M, C, K
(Level2)
Displayed by
Service
Switch (*1)
Tail End Color
Fading/
Graininess
Correction
ON/OFF*
This mode may improve the output quality of halftone
images when color fading occurs at the tail end of the
image to the feeding direction.
It can be used to eliminate the tiny white grainy dots that
appear on the output paper when copying or printing
halftone images.
This setting should be
set to ON when Sample
A (tail end color
fading) or Sample C
(white grains) of the
faulty images appears.
COPIER >
OPTION >
BODY >
VCONT-UP
(Level2)
Displayed by
Service
Switch (*1)
White Gap
Correction
1 to 4 (3*)
If the dark colored area follows right after the halftone
area, 'white gap' can be appeared near the border in the
halftone area. This can be improved with this function.
This setting should be
set to ON when Sample
B of the faulty images
appears.
COPIER >
OPTION >
BODY >
ADJ-BLNK
(Level2)
Displayed by
Service
Switch (*1)
2-sided Print
Image Uneven
Gloss Correction
ON/OFF*
When two-sided copying or printing is made for high
density images on coated paper, gloss unevenness that
looks like sprinkled fine sands may occur on the side that
first passes through the fixing unit.
You can use this feature to reduce the gloss unevenness.
However, it may take a few moments to output the copy or
print because it takes time for the fixing unit to cool down
after copying or printing the first side.
This setting should be
set to ON when Sample
E of the faulty images
appears.
This will be enabled
after the main power is
turned OFF/ON.
COPIER >
OPTION >
USER > FX-
BC-SW