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1 drive, 2 operation, 1 toner density detection control – Konica Minolta 5430 DL 5440 DL 5450 User Manual

Page 101: 1 drive -64, 2 operation -64, 1 toner density detection control -64

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AIDC Sensor

Main Unit Theory of Operation

2-64

II Comp

osition

/O

p

eration

11.1.1

Drive

11.2 Operation

11.2.1

Toner density detection control

• A reflective sensor is used for the AIDC Sensor that detects the amount of toner sticking

to the surface of the Transfer Belt. Image stabilization is performed based on the value
detected.

• The detection pattern (toner image) produced on the surface of the Transfer Belt is irradi-

ated with light emitted by the LED of the sensor.

• The photodiode of the sensor detects the light reflected off the toner pattern on the sur-

face of the Transfer Belt.

• A voltage corresponding to the intensity of the light reflected off the toner pattern is out-

put to the Mechanical Control Board (PWB-A).

[1]

Pressure/Retraction Clutch/2nd Image
Transfer (CL5)

[3]

AIDC Sensor Cover

[2]

Retraction Cam

[4]

AIDC Sensor Lever

4138to2083c0

[1]

[2]

[4]

[3]

4138to2084c0

AIDC Sensor

4138to2085c0

Transfer Belt surface

LED

Photodiode

Amount of toner

sticking

Intensity of light

reflected

Output

Large

Small

Low

Small

Great

High

5430DL_5440DL_5450_TO_PDF.book 64 ページ 2005年4月12日 火曜日 午後4時49分