Shock Jitter And Other Banding; 1 Shock-Jitter At Itb (Ptr Originated); 2 Shock-Jitter At Opc (Ptr Originated); 3 Shock-Jitter At Ptr (Fusing Unit Entrance Originated) - Ricoh Pro C901 Technical Bulletin

Reissued:21-Apr-14
Model:
Aries-P1.5/C1.5

Shock jitter and other Banding

5-2.
Excerpt from RTB RM077019g
Definition
Banding: Bands that appear in main scan direction in a certain pitch
Shock-jitter: Bands that appear in main scan direction on the same place of a page from
2nd page and on
Troubleshooting procedures are provided for the following 9 types of banding:
Shock-jitter at ITB (PTR originated)
No.1
Shock-jitter at OPC (PTR originated)
No.2
Shock-jitter at PTR (Fusing unit entrance originated)
No.3
Banding at 85mm TE (Shock at PTR when paper exits PTR)
No.4
1.8mm Pitch Banding
No.5
2.5mm Pitch Banding
No.6
5mm Pitch Banding
No.7
10mm Pitch Banding
No.8
56mm Pitch Banding
No.9
No.10 8mm Pitch Banding
The following table summarizes the 10 types of banding/shock-jitter.
See each section for more details.
Number Symptom
No.1 Shock-jitter at
ITB
echnical
T B
Action
Actions for No.1 & No.2 to
be performed as a set.
1. Update the firmware to the
following versions:
a) Web Support
p/n D0956083
Version 1.03
b) Engine
p/n D0955252
Version 1.007:16
c) System/Copy
p/n D0956081
Version 1.05
2. Add the modified fly wheel
3. Adjust the image transfer
current.
Black: 55uA  70uA
Cyan: 50uA  70uA
Magenta: 50uA  70uA
Yellow: 55uA  70uA
4. Reduce the process speed
from normal to low.
5. Change the paper interval.
ulletin
Date:
10-Mar-14
 Possible toner
scattering or poor
transfer
 Low productivity
 Blisters could appear
PAGE: 36/75
No.:
RM077107b
Side effect