Disturbed Image
Deterioration of Graininess in Halftone Areas
Cause:
This may occur if:
• Printing is performed after the machine is left idle for a while.
• Printing is done at high temperature or humidity
• Documents with a small image area are printed continuously.
The developer’s electrostatic property diminishes, causing the toner adhesion to increase. If this
happens, the shapes of half-tone image dots may be degraded and luster (dot height) may be uneven.
Solution:
1. In the [Machine: Maintenance] group on the [Operator Adjust.] menu, execute 0506:
[Execute Developer Refreshing].
2. Print the image. Has the problem been resolved?
Yes Finished!
No Go to the next step.
3. Set the value of halftone screen frequency in the print setting to "175" or "200".
4. Image Quality Problem: Full Page
56
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