Image forming apparatus that control the reflected light detecte

Details Image forming apparatus that control the reflected light detecte Image forming apparatus that control the reflected light detecte

1998-03-25

1999-11-23

Grimley, Arthur T.

Electrophotography

Control of electrophotography process

Of plural processes

399 58, 399 59, 399 60, G03G 1500

Patent

active

059915587

ABSTRACT:
An image forming apparatus that prepares a toner patch including a predetermined gradation area percentage on an image support to detect a developing concentration. An optical sensor detects reflected light from the background of the image support and reflected light from the toner patch prepared on the image support. The reflected light detected by the optical sensor is then controlled in response to the gradation area percentage of the prepared toner patch.

REFERENCES:
patent: 5436705 (1995-07-01), Raj
patent: 5574544 (1996-11-01), Yoshino et al.
patent: 5583644 (1996-12-01), Sasanuma et al.
patent: 5682573 (1997-10-01), Ishikawa et al.
patent: 5812903 (1998-09-01), Yamada et al.

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