Symptom

The first few printouts after turning on the machine may have blurred image at 189mm intervals (which corresponds to the OPC drum circumference) on halftone images in high humidity environments. (See the example below)

Cause

Charge failure caused by “corona products” that form on the OPC drum

If the symptom occurs when all of conditions below are met:

  • Operation after a long break (as in the initial operation of the day)
  • Halftone image
  • High humidity
Action
  1. Execute “Color Registration” from “Maintenance” of the "Machine Features" screen.
  2. Execute “Auto Color Calibration” from “Maintenance” of the "Machine Features" screen.

You can access the "Machine Features" screen with the following procedure below.

  • Pro C5200S/C5210S:
    • When using the standard operation panel: Press the "User Tools" key.
    • When using the smart operation panel: Press the "User Tools" icon, and then press "Machine Features".
  • MP C6503/C8003: Press the "User Tools" icon, and then press "Machine Features".