Electrostatic copying machine

Details Electrostatic copying machine Electrostatic copying machine

1974-07-12

1976-03-30

Hartary, Joseph W.

Photocopying

Including fiber optics

355 35, G03G 1501

Patent

active

039471144

ABSTRACT:
A versatile electrostatic copying machine which can provide not only ordinary black-and-white and monochromatic copies and ordinary multi-colored copies but also artificial monochromatic and multi-colored copies of desired optional colors differing from colors of originals conveniently with ease without such troubles as color mingling and paper jamming is disclosed, said copying machine comprising an original-light exposing zone for irradiating an original to be copied in the stationary or moving state by a light source, a photosensitive layer-light exposing zone for light-exposing imagewise a statically charged photosensitive layer, an optical system for optically connecting said original-light exposing zone to the photosensitive layer-light exposing zone and projecting an image of the original on the photosensitive layer and a development mechanism for developing an electrostatic latent image formed on the photosensitive layer directly or after it has been transferred onto a transfer paper, wherein said optical system comprises a light-selecting mechansim for selecting an optional light from white light and color-separated lights and exposing the photosensitive layer to said selected light and an exposure light quantity-adjusting mechanism for adjusting the exposure light quantity to an optimum quantity with respect to each of a plurality of said lights, the development mechanism comprises a development operation-selecting mechanism for selecting an optional development operation among a plurality of development operations differing in the toner hue, and said light-selecting mechanism and development operation-selecting mechanism are actuated independently or in the state interlocked with each other so that a copy having a desired coloring effect can be obtained.

REFERENCES:
patent: 2521954 (1950-09-01), Tuttle et al.
patent: 2921498 (1960-01-01), Simmon et al.
patent: 3117488 (1964-01-01), Giordano
patent: 3420151 (1969-01-01), Levine
patent: 3467468 (1969-09-01), Johnson
patent: 3531195 (1970-09-01), Tanaka et al.
patent: 3532422 (1970-10-01), McFarlane
patent: 3848990 (1974-11-01), Otubo et al.

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