Method and apparatus for controlling process condition for image

Details Method and apparatus for controlling process condition for image Method and apparatus for controlling process condition for image

1994-04-28

1996-04-16

Beatty, Robert

Photocopying

Contact printing

Light boxes

355214, G03G 2100

Patent

active

055087876

ABSTRACT:
In an image forming apparatus, a voltage for a charger, a voltage for a light source for exposure or similar process condition for image formation is controlled such that a control parameter particular to image formation, e.g., the surface potential of an image carrier (light portion or dark portion) or the amount of toner deposited on the image carrier lies in a first predetermined tolerance width of a target value. Subsequently, the process condition is controlled such that the control parameter lies in a second predetermined tolerance width of the target value which is narrower than the first tolerance width. As a result, the control parameter is confined in the second tolerance width for achieving the final control accuracy.

REFERENCES:
patent: 4616923 (1986-10-01), Reuter
patent: 5006896 (1991-04-01), Koichi et al.
patent: 5045883 (1991-09-01), Ishigaki et al.

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