Overview Of Process Control - Ricoh D014 Service Manual

6.8 PROCESS CONTROL

6.8.1 OVERVIEW OF PROCESS CONTROL

In this machine, there are three phases in process control:
Potential control. Adjusts the image creation process (charge, development bias, and
LD power) to achieve the target toner coverage. During potential control, several
series of patterns are created at prescribed times. The potential sensor and ID sensor
read these patterns. The readings of these sensors are used to determine the
development capacity (development gamma), and then adjust the conditions around
the drum to reproduce the best possible images. Potential control also puts the
machine in the best possible condition to begin toner supply control.
MUSIC. MUSIC (Mirror Unit Skew Interval Correction) corrects the horizontal and
vertical skewing of the print images on the ITB
Toner supply control. Detects the amount of toner applied to ID sensor patterns
between pages and adjusts the amount of toner supplied to the development unit to
maintain consistency in the amount of toner.
SM
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Process Control
D014/D015/D078/D079