Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1981-12-09
1984-11-27
Moses, R. L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 14E, 355 14R, G03G 1500
Patent
active
044848110
ABSTRACT:
The image forming method is executed by projecting a light image on a rotatable recording member to consecutively form electrostatic latent images corresponding to the light image, developing the latent images, projecting a predetermined amount of light onto a non-imaged area present between two consecutive latent images on the recording member to form an electrostatic image, detecting potential of the electrostatic image, and controlling the development of the latent images next to the electrostatic image detected during the detection of the potential in response to the detection results. This method is performed in the image forming apparatus which includes a rotatable recording member, processing units for projecting a light image onto the recording member to consecutively form electrostatic latent images corresponding to the light image, a developer unit for developing the latent images, a voltage applying circuit for applying a voltage to the developer unit, a projecting unit for projecting a predetermined amount of light onto a non-imaged area present between two consecutive latent images on the recording member, a detector for detecting surface potential of the non-imaged area, and a controller for controlling the voltage applying circuit in response to detection output from the detector in the development of the latent image next to the non-imaged area in the developer unit.
REFERENCES:
patent: 3788739 (1974-01-01), Coriale
patent: 3944354 (1976-03-01), Benwood et al.
patent: 3998538 (1976-12-01), Urso et al.
patent: 4019102 (1977-04-01), Wallot
patent: 4063154 (1977-12-01), Andrus et al.
patent: 4206995 (1980-06-01), Legg
Iwami Naoki
Kawatsura Yoshihiro
Masuda Shunichi
Nakahata Kimio
Shimizu Katsuichi
Canon Kabushiki Kaisha
Moses R. L.
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