Dual mode electrostatographic printing machine

Details Dual mode electrostatographic printing machine Dual mode electrostatographic printing machine

1975-04-10

1977-02-15

Hix, L. T.

Photocopying

Including fiber optics

355 8, G03G 1530

Patent

active

040079813

ABSTRACT:
A dual mode color electrostatographic printing machine in which either a pictorial copy or a functional copy of an original document is reproduced. Either mode of operation is selectable. In the pictorial copying mode, the latent image recorded on the photoconductive surface is modulated by a line screen pattern. Contrariwise, in the functional copying mode, the latent image remains un-modulated. The screen is shifted by one-third of the spacing between the lines in the screen for each successive color separation exposure.

REFERENCES:
patent: 3120790 (1964-02-01), Carlson et al.
patent: 3313623 (1967-04-01), Bixby
patent: 3517596 (1970-06-01), Johnson et al.
patent: 3580671 (1971-05-01), Lavander
patent: 3775006 (1973-11-01), Hartman et al.

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