Photocopying – Contact printing – Light boxes
Patent
1987-02-05
1989-06-13
Grimley, Arthur T.
Photocopying
Contact printing
Light boxes
355327, G03G 1501
Patent
active
048396923
ABSTRACT:
A photoreceptor having a insulating layer in which plural color-separation filters are arranged in the form of fine line type or of mosaic type provided on the photosensitive layer having the photosensitivity for the entire range of visible ray, is used and an image-exposure is first given to the entire surface of the photoreceptor, thus electric charges are distributed on the lower photosensitive layer of each filter depending on the separated image density. Then a flood exposure by the light identical to the one transmitting the color of the first color separation filter is given to the surface of the photoreceptor and thereby electrostatic images corresponding to the primary latent image are formed only on the photoconductive layer at the lower part of the filter and then they are developed with color toners whose color corresponds to the type of the filter, then the charging is given for uniformalizing the potential on the photoreceptor surface and the operations including flood exposure, developing and re-charging identical to the foregoing are repeated for color separation images in succession, and then the multi-color images are recorded on the transferring member through only one transferring.
REFERENCES:
patent: 3702483 (1972-11-01), Fantuzzo
patent: 3832170 (1974-08-01), Nagamatsu et al.
patent: 3836363 (1974-09-01), Plutchak
patent: 3898082 (1975-08-01), Giamo, Jr.
Research Disclosure, Apr. 1974, No. 12060, "Color Electrophotography", pp. 56-58.
Haneda Satoshi
Hiratsuka Seiichiro
Shoji Hisashi
Bierman Jordan B.
Grimley Arthur T.
Konishiroku Photo Industry Co,., Ltd.
Pendegrass J.
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