Konica Minolta bizhub PRESS C1070 - Manual (Page 89)

5-31
bizhub PRO C1060L
bizhub PRESS C1070/C1070P/C1060
5
Specifying the reference image quality
To stabilize the image quality of this machine, specify the reference values (targets) of the entire printing system in
advance.
If you change the setting value in [Custom Screen], hue variations may be drastically changed. If you change the
screen, specify the standard image quality following the procedure to avoid hue variations.
Tips
If the image quality has not been appropriately adjusted only through daily calibration, you may improve the situation
by carrying out the following tasks.
Carry out the adjustment continuously in sequence. If you have interrupted the adjustment during processing, execute
"STEP2. Gamma Automatic Adj." before restarting the adjustment. For example, if you have interrupted the adjustment
at the end of "STEP3. Density Balance Adjustment (with the Relay Unit RU-509 installed)", execute "STEP2. Gamma
Automatic Adj." when restarting the adjustment, then execute "STEP4. Color Density Control".
If sufficient adjustment results are not obtained via daily maintenance, also carry out the adjustment in this order.
For details about the setting procedure, refer to the HTML User's Guide.
Order Menu item Description
Without Relay Unit
RU-509 With Relay Unit RU-
509
STEP1 Screen Pattern (Refer to the HTML User's
Guide.) Select the screen to be used with the screen set-
ting (assignment) changed.
STEP2 [Gamma Automatic Adj.] (Refer to the HTML
User's Guide.) Automatically adjusts the color reproducibility of
all the output paper.
STEP3 [Printer Gamma
Sensor Adjustment]
(Refer to the HTML
User's Guide.) [Density Balance Ad-
justment]
(Refer to the HTML
User's Guide.) [Printer Gamma Sensor Adjustment]:
Adjusts the IDC sensor using the scanner.
[Density Balance Adjustment]:
Automatically corrects the density balance.
STEP4 [Printer Gamma Off-
set Adjustment]
(Refer to the HTML
User's Guide.) [Color Density Con-
trol]
(page 5-23) [Printer Gamma Offset Adjustment]:
Changes the printer gamma curve, and adjusts
the gradation of the highlighted part and the
background optical density.
[Color Density Control]:
Select [Basic Setting], then set [Periodical Adj.
Execution] to [ON]. If necessary, execute [Color
Density Manual Control].
STEP5 [Density Balance
Adjustment]
(Refer to the HTML
User's Guide.) Calibration
(page 5-23) [Density Balance Adjustment]:
Automatically corrects the density balance.
Calibration:
Calibrates the color reproducibility that fluctuates
from day to day.
STEP6 Calibration
(page 5-23) - Calibrates the color reproducibility that fluctuates
from day to day.