Ricoh A172 - Subject: JAGGED IMAGE IN PRINTER MODE

savin
Field Engineering Bulletin
Digital Color Series
TECHNICAL OPERATIONS
BULLETIN NO: SDC206E - 008 DATE: IO/28197
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Subject: JAGGED IMAGE IN PRINTER MODE
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Copy Quality
Electrical
Mechanical
Modification
Safety Information
Technical Information
Model - Product/Serial Numbers Affected
Modification Schedule
SDC206
c] Mandatory
0 Scheduled Visit
SDC206IE
0 Next Call
0 Next PM
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10 As Necessary
General Information 1
1 Install Time
Symptom:
The outline of characters is not well defined (jagged) in printer mode. This symptom does not occur
with the prints made in letter mode.
Cause:
In photo mode, 2x1 dot dither processing is applied to all images including text. If the copier’s
condition is tending to output high (dark) image density, it will be adjusted by 2x1 dot dither
processing, resulting in jagged image. The symptom is most noticeable especially when calibration
targets with low
IDmax is used.
Solution:
Lower the copier’s image density by the following procedure
I. Open SP Mode 8-4 Printer y Correction Data Fine Adjustment =Contone=. Check IDmax of the
color showing jagged image.
2. Open SP Mode l-4 Toner Max M/A Target. Input 0.800 if the
IDmax checked above is 4. Input
0.700 if the IDmax checked above is 3 or below.
3. Wait 5 minutes. Open SP Mode 2-4 and perform Process Control Self Check.
4. Open SP Mode 3-2 and confirm that the pointer table is not 00.
Note: If pointer table is 00, it means that the machine selected default pointer table since Toner
Max M/A Target is lowered too much. Try with higher Toner Max M/A Target.
5. Perform printer ACC.
6. Check print quality and if not satisfactory, go back to step 1.
Note: For SP Mode
I-4 Toner Max M/A Target, you may input lower value than those described
above, however ensure that the selected pointer table is not 00.
Savin Corporation
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