Maximum Density; Fuser Speed - Konica Minolta bizhub c20 Service Manual

Field Service Ver. 1.0 Sep. 2008
14.4.20

MAXIMUM DENSITY

Functions • To adjust gradation, color, and image density to target reproduction levels by varying
the maximum amount of toner sticking to media 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.
• The default setting is 2.
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.
Setting/ 1. Select [MAXIMUM DENSITY] and press the Select key.
Procedure 2. Select desired color with the up key /down key
3. Select desired setting value with the up key /down key
NOTE
• When the setting has been changed, be sure to run a [CALIBRATION] process.
See P.134
14.4.21

FUSER SPEED

A. HIGH SPEED
• To adjust the speed of the fusing motor when the transport speed is 144 mm/s so as
Function
to match the fusing speed with transport speed.
Use • Brush effect or blurred image is evident as a result of changes in environmental con-
ditions or degraded durability.
• The default setting is 0.
Adjustment
Range
Adjustment If brush effect is evident, vary the setting value and check for image.
Instructions If a blurred image occurs, decrease the setting.
Setting 1. Select [FUSER SPEED] and press the Select key.
/procedure 2. Select [HIGH SPEED] and press the Select key.
3. Select desired setting value with the up key /down key
B. LOW SPEED
• To adjust the speed of the fusing motor when the transport speed is 72 mm/s so as to
Function
match the fusing speed with transport speed.
Use • Brush effect or blurred image is evident as a result of changes in environmental con-
ditions or degraded durability.
• The default setting is 0.
Adjustment
Range
Adjustment If brush effect is evident, vary the setting value and check for image.
Instructions If a blurred image occurs, decrease the setting.
Setting 1. Select [FUSER SPEED] and press the Select key.
/procedure 2. Select [LOW SPEED] and press the Select key.
3. Select desired setting value with the up key /down key
0 1 "2"
-20 to +20 (Step: 1)
-20 to +20 (Step: 1)
14. SERVICE MODE
3 4
and press the Select key.
and press the Select key.
and press the Select key.
and press the Select key.
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