Image forming apparatus using measured data to adjust the operat

Details Image forming apparatus using measured data to adjust the operat Image forming apparatus using measured data to adjust the operat

1991-03-14

1992-12-22

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355203, 355204, 355219, 355221, 361235, G03G 1500

Patent

active

051737345

ABSTRACT:
An image forming apparatus includes a corona charger, a surface electrometer and a memory provided around a photoreceptor drum. When power supply of the image forming apparatus is turned on, an image adjusting process is carried out. In the image adjusting process, level of charging the corona charger is changed stepwise, the surface potential on the photoreceptor drum at the time is measured by the surface electrometer and the result of measurement is stored in the memory. When image forming process is carried out subsequently, the charge level of the corona charger is set based on the data stored in the memory.

REFERENCES:
patent: 4355885 (1982-10-01), Nagashima
patent: 4564287 (1986-01-01), Suzuki et al.
patent: 4616923 (1986-10-01), Reuter
patent: 4647184 (1987-03-01), Russell et al.
patent: 4736223 (1988-04-01), Suzuki
patent: 4963926 (1990-10-01), Ohishi et al.
patent: 5017964 (1991-05-01), Sadwick

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