Image forming apparatus having control means for controlling ima

Details Image forming apparatus having control means for controlling ima Image forming apparatus having control means for controlling ima

1993-04-29

1994-04-19

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355219, 355326R, G03G 1500, G03G 1502

Patent

active

053050606

ABSTRACT:
An image forming apparatus includes an electrophotographic photosensitive member exhibiting non-linear relation between charge amount thereof and a potential of an electrostatic latent image formed thereon; a developing device for developing the electrostatic latent image; a latent image forming condition setting device for automatically setting the latent image forming condition in accordance with an ambient condition; the setting device including an input device for inputting information relating to a target latent image potential preset in accordance with the ambient condition; wherein when the latent image forming condition is determined on the basis of the non-linear property which is stored, a latent image is actually formed on the photosensitive member with charging conditions which are away in opposite detections from a charging condition calculated from the ambient condition, and a relation between the charge amount of the photosensitive member and the potential of the electrostatic latent image is determined by line approximation on the basis of measurement in the actual latent image formation, and then the charge amount is determined from the linear approximation.

REFERENCES:
patent: 4502777 (1985-03-01), Okamoto et al.
patent: 5034772 (1991-07-01), Suzuki

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