Photocopying – Contact printing – Light boxes
Patent
1991-04-25
1992-09-29
Grimley, A. T.
Photocopying
Contact printing
Light boxes
118688, 355 69, 355208, 355260, G03G 2100
Patent
active
051517400
ABSTRACT:
An image forming apparatus having a section detachably installed in the image forming apparatus, for performing development by supplying developer to an image carrier, a section for detecting the density of the developer on the image carrier so as to control the density of the developer to be a predetermined value when the developing section is installed in the image forming apparatus, the detecting section includes, a section for generating light so as to radiate the generated light to the image carrier, means for detecting the light radiated to and from the image carrier by the generating means, means for controlling an amount of the light from the generating means in response to a result of detection of the light detected by the detecting means.
REFERENCES:
patent: 4462680 (1984-07-01), Ikeda
patent: 4883019 (1989-11-01), Menjo et al.
patent: 4956669 (1990-09-01), Nakamura
patent: 5053816 (1991-10-01), Takahashi
IBM Technical Disclosure Bulletin, Sep. 1972, vol. 15, No. 4.
Grimley A. T.
Kabushiki Kaisha Toshiba
Stanzione P.
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