D Max Density; Tcr Level Setting - Konica Minolta bizhub C450 Service Manual

10. Service Mode
10.6.6

D Max Density

Functions • To adjust gradation, color, and image density to target reproduction levels by varying
the maximum amount of toner sticking to paper through auxiliary manual fine-adjust-
ment of gamma of each color after Gradation Adjust.
Use • An image quality problem is not corrected even after Gradation Adjust has been run.
Adjustment
Range
Adjustment To increase the maximum amount of toner sticking, increase the setting value.
Instructions To decrease the maximum amount of toner sticking, decrease the setting value.
Adjustment 1. Call the Service Mode to the screen.
2. Touch these keys in this order: "Imaging Process Adjustment" → "D Max Density."
Procedure
3. Select "COPY" or "Printer."
4. Select the color to be adjusted.
5. Enter the new setting from the 10-Key Pad.
6. Touch "END" to return to the "Process" menu screen.
7. Touch "Stabilizer."
8. Touch "Stabilizer Mode."
9. Press the Start key to validate the adjustment value.
10.Check the copy image for any image problem.
NOTE
• If the setting value has been changed, be sure to run an image stabilization
sequence to make valid the new value.
10.6.7

TCR Level Setting

Functions • To adjust the T/C control level when an abnormal image density occurs as a result of
a change in the amount of charge of toner and carrier due to an environmental
change.
Use • Use when T/C changes due to changes in environmental conditions of the user site
Adjustment
Range
The central value of 0 corresponds to 7 % of T/C (in 1.0 % increments).
Adjustment To increase T/C, increase the setting value.
Instructions To decrease T/C, decrease the setting value.
Adjustment 1. Call the Service Mode to the screen.
2. Touch these keys in this order: "Process" → "TCR Level Setting."
Procedure
3. Select the color to be adjusted.
4. Enter the new setting from the 10-Key Pad.
5. Touch "END" to validate the adjustment value.
6. Check the copy image for any image problem.
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Field Service Ver. 1.0 Mar. 2005
"0" (-10 to +10)
"0" (-3 to +3)