Ricoh pro c901 - RTB 77 b: Inconsistent image density; mottled effect

Technical Bulletin PAGE: 1/15
Reissued:16-Oct-12
Model: Aries-C1.5 (D095) / Aries-P1/.5(M077) Date: 8-Nov-2012 No.: RM077077b
RTB Reissue
The items in bold italics were corrected or added.
SYMPTOM
Inconsistent image density; mottled effect, blurred image
CAUSE / SOLUTION / SIDE EFFECT
Cause Solution Side effect
Calibration None
Unsmooth paper surface
causes unstable electric field in
the toner transfer process.
Image
processing
Screening
setting
Reduced image
resolution
Toner refresh
amount
Toner yield will decrease
if average coverage is
4% or lower
Toner degradation
Engine
setting
ACS switch
setting
Productivity will be slightly
decreased after switching
the print mode.
Cause in detail
- Unsmooth paper surface; unstable electric field -
Subject: Troubleshooting “Mottled Effect”
Prepared by: J. Kobayashi
From: 1
st
PP Tech Service Sec., PP Tech Service Dept.
Classification:
Troubleshooting
Mechanical
Paper path
Product Safety
Part information
Electrical
Transmit/receive
Other ( )
Action required
Service manual revision
Retrofit information
Tier2
Stable electric field
ITB
Copier paper
Toner
Toner transfer on smooth surfaced paper
Result
Toner is successfully
transferred to paper;
no blank areas.