Photocopying – Including fiber optics
Patent
1974-11-13
1976-08-24
Moses, R. L.
Photocopying
Including fiber optics
355 10, G03G 1501
Patent
active
039763722
ABSTRACT:
A multicolor electrophotography apparatus and method wherein a photoconductive copy sheet surface containing uniform electric charge is exposed to an original through light filter which enables one color to be recorded, is developed with colored toner to produce a copy of that color, and the sequence is repeated for each of the other colors, utilizing superimposing toner images on the same copy sheet. In a preferred embodiment a sheet carriage is adapted to hold the copy sheet at its upper edge portion and carry it only in a certain direction for example in a vertical direction whereas a developer bed on which a plurality of developer reservoirs, each containing different colored developer toners are mounted, is adapted to travel in the other direction for example in the horizontal direction. During travel of the sheet carriage in the vertical direction, the photosensitive copy sheet passes through a charge deposition station, an exposure station and a development station thereby accomplishing reproduction of an image of one specified color. These steps may be repeated in as many colors as desired, for example, with accompanying movement of the developer bed so as to position the succeeding developer reservoirs containing different colored toners in the path of the sheet carriage, to produce, in as many colors as desired, a composite color image.
REFERENCES:
patent: 3130655 (1964-04-01), Meyer et al.
patent: 3709593 (1973-01-01), Matsumoto et al.
patent: 3738743 (1971-04-01), Hoffman et al.
patent: 3810693 (1974-05-01), Matsumoto et al.
patent: 3838920 (1974-10-01), Terashima et al.
patent: 3848990 (1974-11-01), Otubo et al.
Irihara Koichi
Kawai Ryoichi
Miyata Shizuo
Nakao Motokazu
Nakao Yoshihide
Moses R. L.
Sharp Kabushiki Kaisha
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