Copyright
2001 RICOH Corporation. All rights reserved.
TECHNICAL SERVICE BULLETIN
TECHNICAL SERVICE BULLETINTECHNICAL SERVICE BULLETIN
TECHNICAL SERVICE BULLETIN
BULLETIN NUMBER:
BULLETIN NUMBER:BULLETIN NUMBER:
BULLETIN NUMBER: A172/A199 – 031
A172/A199 – 031A172/A199 – 031
A172/A199 – 031 09/05/2001
09/05/200109/05/2001
09/05/2001
APPLICABLE MODEL
APPLICABLE MODELAPPLICABLE MODEL
APPLICABLE MODEL:
::
:
GESTETNER – 2606E/2606
GESTETNER – 2606E/2606 GESTETNER – 2606E/2606
GESTETNER – 2606E/2606
RICOH –
RICOH – RICOH –
RICOH – AFICIO 5206/5106
AFICIO 5206/5106AFICIO 5206/5106
AFICIO 5206/5106
SAVIN – SDC206E/SDC206
SAVIN – SDC206E/SDC206SAVIN – SDC206E/SDC206
SAVIN – SDC206E/SDC206
SUBJECT: MAGENTA TONER SCATTERING
SYMPTOMS:
• Excessive Magenta toner scattering inside the machine.
• Magenta dirty background on copy/print images.
CAUSES:
1. Decrease in developer chargeability.
2. Q/M of the developer gets too low.
3. Toner wt% inside the developer is too high (approx. 7%).
SOLUTION:
1. The purpose of this procedure is to minimize magenta scattering without replacing the developer.
2. This procedure is only for machines, which exhibit excessive Magenta toner scattering conditions.
This procedure should be limited to machines with excessive scattering to avoid unnecessary side
effects such as low image density.
Preparation:
1. Clean the inside of the machine using a vacuum.
2. Clean the area around the development unit using a vacuum.
3. Check if the exhaust fan motors (left side of machine) are blocked with toner. If they are, clean the
motors and their dust filters.
Step # Procedure Technical background
1 Pull out the toner tank unit. This prevents toner from
entering the development
unit.
2 Enter PAGE 12 of "SP Adjustment".
Change the current value of the "Toner Sensor
Gain" for Magenta by – 9.
For example, if the current value is 182, then
change it to 173 (182-9=173).
See the NOTE written below this table.
This keeps the toner
concentration low (approx.
4.5wt%).
NOTE:
Never reduce the Toner Sensor Gain value by more than –9. Doing so can cause side effects such as low
image density
Continued…
Note: This copy is intended as a master original
for reproduction of additional bulletins.
!
COPY QUALITY
CONTROL NO 059CLR
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