Complete Correction Control; Individual Registration Control - Konica Minolta bizhub C35 Service Manual

DRAFT
Theory of operation Ver. 1.0 Feb. 2010
24.3.2

Complete correction control

• The following controls 1 to 6 are collectively called the complete correction control.
Control name
1 IDC sensor output control
2 Developing bias control
Developing bias control
(control of the maximum amount
3/5
of toner sticking to the transfer
belt)
4/6 Laser light intensity control
7 Gamma correction control
Color shift correction control
8/9
(Main scan/Sub scan direction)
24.3.3

Individual registration control

Control name
1 IDC sensor output control
Color shift correction control (Main
2
scan/Sub scan direction)
24. IMAGE STABILIZATION CONTROL
Changes in various types of characteristics due to change
with time of the IDC sensor (deteriorated LED, dirty sensor
surface), part-to-part variations in the sensors, and change of
environment affect the IDC sensor output corresponding to
the clear transfer belt surface. To correct fluctuations in the
output, the sensor LED intensity is adjusted so as to keep
constant the IDC sensor output value.
If the developing bias voltage (Vpp) is too high for the Ds dis-
tance in each imaging unit, a leak image (background leak,
image area leak) results. If Vpp is excessively low, halftone
reproducibility becomes poor. This control detects a Vpp
range, in which no image failure occurs, to set the optimum
Vpp.
Control details are equivalent to those of the simplified correc-
tion control. Unlike the simplified correction control, however,
an even more detailed detection pattern is transferred to cal-
culate detailed output values.
Control details are equivalent to those of the simplified correc-
tion control.
Control details are equivalent to those of the simplified cor-
rection control.
Purpose
Purpose
95