15 January 1992COPY QUALITY
1.3 UNEVEN IMAGE DENSITY
- Symptom -
Uneven image density appears on the copies.
- Possible Cause -
1. Dirty optics
2. Uneven exposure adjustment plates
3. Dirty corona wires or grid
4. Uneven height of charge corona wire
- Action -
Does the uneven image area shift when a reduction copy is made?
NoYes
Is the optics section dirty?
NoYes
Clean the optics.
Adjust the exposure adjustment plates on the 1st scanner.
(See Side-to-side Exposure Adjustment.)
Is the erase lamp, quenching lamp, or toner shield glass dirty?
NoYes
Clean the erase lamp, quenching lamp, or toner shield glass.
Are the corona wires or grid plate dirty?
NoYes
Clean the corona wires, grid plate, and casings.
Adjust the charge corona wire height using a drum shoe.
(See Charge Corona Current Adjustment.)
6-7 |
ACEC
RICOH
