Image forming apparatus capable of compensating for instability

Details Image forming apparatus capable of compensating for instability Image forming apparatus capable of compensating for instability

1995-12-28

1998-02-24

Smith, Matthew S.

Electrophotography

Control of electrophotography process

Of plural processes

399 60, 399 72, G03G 1500, G03G 2100

Patent

active

057220069

ABSTRACT:
An image forming apparatus includes a rotatable image bearing member for bearing a toner image and a toner image forming device for forming a toner image on said image bearing member. The toner image forming device is capable of forming a standard toner image and a plurality of reference toner images along a rotational direction of the image bearing member. The image forming apparatus also includes a density detecting device for detecting a density of the toner image on the image bearing member, a density control device for controlling the toner image forming device on the basis of an output of the detecting device from the standard toner image, a position detecting device for detecting a rotational angular position of the image bearing member, and a correcting device for correcting the density control device in accordance with an output of the density detecting device from the reference toner image, based on positional information of the position detecting device.

REFERENCES:
patent: 5045883 (1991-09-01), Ishigaki et al.
patent: 5253018 (1993-10-01), Takeuchi et al.
patent: 5369473 (1994-11-01), Ogawa et al.
patent: 5481337 (1996-01-01), Tsuchiya et al.
patent: 5559587 (1996-09-01), Ogata et al.

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