Image forming apparatus and method of detecting the...

Details Image forming apparatus and method of detecting the... Image forming apparatus and method of detecting the...

2007-05-08

2007-05-08

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Of plural processes

C399S072000

Reexamination Certificate

active

10901187

ABSTRACT:
An image forming apparatus is able to form steady test-pattern toner images for calibration of reflection density detection characteristics with ample toner. The operation consists of forming a test-pattern toner image for calibration of the reflection density detection characteristics, which is formed of a plurality of toner images of different colors aside from a reference test-pattern toner image for controlling image forming conditions, detecting the detection characteristics of a reflection density sensor from the result of detection of the quantity of toner attached to the test-pattern toner image for calibration of the reflection density detection characteristics, and calibrating the output characteristics of the reflection density sensor.

REFERENCES:
patent: 5103260 (1992-04-01), Tompkins et al.
patent: 5122835 (1992-06-01), Rushing et al.
patent: 1-197777 (1989-08-01), None
patent: 7-225501 (1995-08-01), None

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