Image Stabilization Control; Outline; Operation Sequence; Idc Sensor Output Correction - Konica Minolta BIZHUB C3100P Service Manual

15. IMAGE STABILIZATION CONTROL

15.1 Outline

• To ensure uniform output image quality at all times, comprehensive control is provided including control of the developing bias voltage, laser
light intensity, registration correction, gamma correction, and other parameters.
Purpose
To stabilize image density
To stabilize image transfer
An explanation is given of the control for each section.
LD/Y
[1]
[2]
IN/OUT
[9]
[1] Thermistor/3
[3] Developing bias
Gamma correction
Developing bias control (control of the maximum amount
[5]
of toner sticking to the transfer belt)
Laser light intensity control
[7] ATVC control
To be set on the control panel
AIDC mode
Transfer power
[9]
IMG ADJ THICK
IMG ADJ BLACK
FINE LINE ADJ

15.2 Operation sequence

15.2.1 IDC sensor output correction

• Changes in various types of characteristics due to changes with time of the IDC sensor (deteriorated LED, contaminated sensor surface),
part-to-part variations in the IDC sensor, and changes in environment affect the transfer belt. To correct fluctuations in the sensor output, the
sensor LED light intensity is adjusted so that the IDC sensor output value remains constant.
• IDC sensor output control
• Developing bias control
• Developing bias control
(control of the maximum amount of toner sticking to
the transfer belt)
• Laser light intensity control
• Gamma correction control
• Color shift correction control
• 1st image transfer ATVC
• 2nd image transfer ATVC
LD/M LD/C
[3] [4]
[5]
IN
OUT
[8]
O THEORY OF OPERATION bizhub C3100P > 15. IMAGE
Control
[6]
[7]
[2] Color shift correction control
[4] Transfer voltage
[6] IDC sensor
[8] Temperature/ humidity sensor
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O-49
STABILIZATION CONTROL
Control means
IDC sensor
Temperature/ humidity sensor
Thermistor/3
Temperature/ humidity sensor