Dot exposure type image forming apparatus

Details Dot exposure type image forming apparatus Dot exposure type image forming apparatus

1989-12-26

1991-06-18

Miller, Jr., George H.

Recorders

Electric recording

Electrochemical

G01D 1506

Patent

active

050252720

ABSTRACT:
The invention provides an apparatus for forming a toner image by reversal development. In the apparatus, there are provided an electric charger for uniformly charging a photoreceptor to a given electrostatic potential; the photoreceptor discharging in response to an exposure light to form an electrostatic latent image, the photoreceptor having a predetermined light decay curve indicating a relation between an amount of the exposure light and a discharged potential on the exposed portion wherein an absolute value of the differential coefficient of the light decay curve is small when the amount of the exposure light is small and the value sharply becomes large when the amount of the exposure light increases; a laser beam exposure device for exposing the photoreceptor with a dot-shaped light beam; and a developing device for providing toner onto the exposed portion of the latent image, thereby forming a toner image.

REFERENCES:
patent: 3942980 (1976-03-01), Hou
patent: 4851926 (1989-07-01), Ishikawa
patent: 4931876 (1990-06-01), Hashizume
patent: 4935756 (1990-06-01), Hotomi et al.

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