Photocopying – Contact printing – Light boxes
Patent
1992-07-16
1994-11-15
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118653, 355208, 355259, G03G 2100
Patent
active
053653181
ABSTRACT:
Stable developing can be made with no inferior image, irrespective of variations in factors relating to the developing function, which affect the developing function, such as a variation in surrounding circumstance, surface potentials of an electrostatic latent image carrier medium and a developer carrier medium or the like. When surface potential sensors serving as a means for detecting a factor relating to the developing function detect variations in the surface potentials of latent image carrier medium or developer carrier medium, voltages applied from power sources, to conductivity regulating member, developer carrier medium and electrically conductive developer supply member are controlled so that the volume of the developer sticking to the electrostatic latent image carrier medium is maintained to be constant. The developer carrier medium transfers a thin layer of the developer to a developing section opposing a photosensitive body and the developer is shifted in an electric field between the surface potential of the electrostatic latent image section on the photosensitive body and the surface potential of the developer carrier medium so as to effect developing.
REFERENCES:
patent: 4521103 (1985-06-01), Ohtsuka et al.
patent: 4686934 (1987-08-01), Kohyama
patent: 5017967 (1991-05-01), Koga
patent: 5128718 (1992-07-01), Mizoguchi
patent: 5170213 (1992-12-01), Yamaguchi et al.
patent: 5179414 (1993-01-01), Bhagat
patent: 5183964 (1993-02-01), Stelter et al.
Hiraoka Yuji
Yamaguchi Chiseki
Grimley A. T.
Hiraoka H.I. Laboratory Co., Ltd.
Lee Shuk Y.
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