Oki C3200n Service Manual page 37

Outline of Print Density Adjustment Method
Adjustment patterns printed on a transfer belt are read using sensors that are installed inside a
sensor shutter placed under a transfer belt unit, for adjusting print density.
Auto-Start timing of Print Density Adjustment
• When environment is different considerably compared to the previous implementation in power-on
• At least 1 or more from 4 ID count values is almost new in power-on
• When ID count value is over 500 from the previous implementation
Toner amounts on produced patterns, contamination of optical sensors with toner, problems with
opening or closing of the sensor shutter, or other reasons, a print density adjustment error may
occur. No control panel display of the error is provided. In such cases, print density adjustments
(Section 5.4.2.7) on defective colors are forced to be executed by the Self-diagnostic Mode and
displayed errors must be checked.
Belt Motor
Sensor Shutter
42615101TH Rev.8
Belt Waste Toner Box
Density Sensor
Density Sensor
Print Density Adjustment Pattern
Oki Data CONFIDENTIAL
Transfer Belt
Belt Cleaning Blade
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