Jittering Lines At Trailing Edge - Konica Minolta AccurioPress C2070 Troubleshooting Manual

1.2.15. Jittering lines at trailing edge

(1) Symptom
Color lines or white lines occur at the one cycle of the fusing belt (310mm) from the trailing edge
of the previous sheet.
Previous
前紙
sheet
Feed
通紙方向
direction
Trailing edge of the
前紙後端
previous sheet
(2) Cause
The potential at the trailing edge of the thick paper is high. It remains on the fusing belt and
affect on the next sheet image; scatters (color lines) or repels the toner (white line) on the image.
(3) Solution
(a) Widen the distance between papers (decrease CPM)
•
Change the DipSW1-0 from 0 (Default) to 1 to show Expert adjustment.
• Copy Screen (Machine screen) → [Paper Setting]→[Change Set]→[Expert Adj.]
•
Select [Down] for [CPM Down].
Note
The productivity becomes one half so if it is not acceptable, take the solution (b).
(b) Adjust the Separation DC.
1. Change the DipSW1-0 from 0 (Default) to 1 to show expert adjustment.
2. Adjust Separation DC in the Expert adjustment. Copy Screen (Machine screen)→[Paper
Setting]→[Change Set]→[Expert Adj.],
3. Increase [Separation DC (Front)].
Note:
When the separation DC is increased, the following symptom may occur.
Do not increase much.
•
Plain paper
•
Coated paper Unable to control
(c) Check the paper state
•
Use the paper just unpacked. (When the moisture in the paper is low, the symptom
occurrence increases.)
•
When the PF-707 heater is turned ON during night, turn OFF it.
Note
When the humidity is high and the heater is turned OFF, watch the lighter image
density and wrinkles.
Table of contents
KONICA MINOLTA Confidential
310㎜
310mm
（定着ベルト1周分）
(1cycle of fusing belt)
Noise from static electricity appears on image
Wrinkle, Poor separation
Noise from static electricity appears on image
- 44 -