13th January 1995COPY QUALITY
1.6 VERTICAL BLACK LINES
- Problem -
Thin black lines appear on the copy.
- Possible Causes -
1. Scratched cleaning blade
2. Dirty or scratched mirrors
3. Scratched or dirty drum
4. Scratched hot roller
- Action -
Do the black lines shift when a reduction copy is made?
NoYes
Clean or replace the exposure glass or mirrors.
Is the toner shield glass or green filter scratched?
NoYes
Replace the toner shield glass or green filter.
Is the edge of the cleaning blade scratched?
NoYes
Replace the cleaning blade.
Is the hot roller scratched?
NoYes
Trouble- shooting
Check whether black lines appear on the copy by stopping the
copy paper in the transport section. If no black lines appear,
replace the hot roller.
Check whether the drum is scratched or there is built-up toner on the drum.
?If toner is built up on the drum, clean the drum as follows;
Wipe with a cloth wetWipe again with a dry cloth
Wipe with a dry cloth
with water(until no water remains)
NOTE: Never use alcohol to clean the drum, alcohol dissolves the
drum surface.
?If the drum is scratched, replace the drum.
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ACEC
RICOH
