Ricoh Pro C901 Technical Bulletin page 147

T
Reissued:10-Jan-12
Model:
Aries-P1.5/C1.5
Cause
Reduced Color Density
After the trailing edge passes the ITB entrance guide, the angle of paper entering the PTR
nip changes, and the electrical charge properties of the paper change; therefore, the paper
transfer current is not enough to transfer the image properly.
White Band
After the trailing edge passes the ITB entrance guide, the paper becomes closer to the ITB,
and paper transfer current leaks due to high paper resistance; therefore, the image does
not transfer to the paper.
Colored Band (High Color Density)
After the trailing edge passes the ITB entrance guide, the paper become closers to ITB,
and paper transfer current leaks and toner scatter appears, which looks like a colored band.
If the paper resistance is high, paper transfer current leaks more and becomes a white
band.
Troubleshooting
NOTE
During troubleshooting for white band at the trailing edge, when adjusting "Paper
Transfer Current; Trail Edge" for both B&W and FC, the white band may change to
a colored band. If you keep adjusting the "Paper Transfer Current; Trail Edge" for
both B&W and FC more, the colored band disappears.
1. Measure the distance of Reduced Color Density / White Band / Colored Band from the
trailing edge of the paper, in mm. Xmm
2. Register the paper in the Paper Library
3. Adjust the following parameters in "Custom Paper Setting"
- "No 32. Ppr Transfer Current Trail Edg Dist: BW"
- "No 33. Ppr Transfer Current Trail Edg Dist: FC"
Length measured in Step 1 (X mm) + 10mm
4. Adjust the following parameters in "Custom Paper Setting"
- "No 30. Paper Transfer Current; Trail Edge : B&W"
- "No 31. Paper Transfer Current; Trail Edge : FC"
Default setting – 10%
5. Check the output with the customer's job.
Did Reduced Color Density / White Band / Colored Band become better than the original?
YES: Go to Step 7
NO: Go to Step 6
6. Adjust the following parameters in "Custom Paper Setting"
B
echnical ulletin
(CONFIDENTIAL)
Date:
16-May-11
PAGE: 2/3
No.:
RM077032a