Hybrid color printing machine

Details Hybrid color printing machine Hybrid color printing machine

1991-01-09

1992-06-09

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355271, 346157, G03G 1501, G03G 1516

Patent

active

051211718

ABSTRACT:
A printing machine having a pair of photoconductive drums with a transfer roller interposed therebetween produces a full color document in two operating cycles. During the first operating cycle, a first color developed image is transferred from the first photoconductive drum to a sheet moving with the transfer roller. A second color developed image is transferred from the second photoconductive drum to the sheet in superimposed registration with the first developed image transferred thereto. During the second operating cycle, the foregoing process is repeated for a third color developed image and a fourth color developed image. In this way, a full color composite toner image is formed on the sheet.

REFERENCES:
patent: 3970042 (1976-07-01), Rees
patent: 4580889 (1986-04-01), Hiranuma et al.
patent: 4593991 (1986-01-01), Aoki et al.
patent: 4796050 (1989-01-01), Furuta et al.
patent: 4803518 (1989-02-01), Haneda et al.
patent: 4899196 (1990-02-01), Mahoney
patent: 4927724 (1990-05-01), Yamamoto et al.
patent: 4935787 (1990-06-01), Maeda et al.
patent: 5008691 (1991-04-01), Kumasaka et al.

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