2.Image Quality Problems
657
Rough Images Appear During Low Duty Use
During low duty use of the machine, air can become mixed with the developer/toner mixture during
agitation and cause rough patches to appear.
Cause:
When the machine is consistently used for low duty printing, air can mix with the developer/toner
mixture during agitation which can cause developer deterioration and cause rough patches to appear
on images. This may occur when:
Every job is 5 pages or less
Pages have less than 4% coverage
To adjust the following settings, register beforehand the type of paper that you are using as a
custom paper.
Solution
1. Replace the developer.
2. Select Advanced Settings > Main: Image Quality Adjustment > Toner Refresh Mode, and then
change the “3” setting to “3.5”. (SP3-820-001 Tnr Refresh Mode Img Area Thresh:K).
3. If the problem persists, consult the product specialist.
If Toner Refresh Mode is set to "3" (default), the amount of toner consumed will be equivalent
to operating the machine under normal conditions at 6% coverage.
Raising the setting higher than "3" could increase the risk of mottled images, higher toner
consumption, and lower toner yield.
If the setting is set to “3.5”, then under normal operating conditions toner consumption will
correspond to about 6.5% total image coverage.
Vertical Lines at 60 mm Intervals
Faint black bands appear at 60 mm (2.4”) intervals vertical to the direction of paper feed.
Cause:
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