Bidirectional color printing apparatus

Details Bidirectional color printing apparatus Bidirectional color printing apparatus

1985-07-24

1987-04-28

Pearson, Charles A.

Typewriting machines

Including interposed inking device for record-medium

Including mechanism for shifting ribbon laterally at...

400 82, 400224, B41J 344, B41J 3514, B41J 3516

Patent

active

046610030

ABSTRACT:
A color printer for effecting impression of images on a paper bidirectionally along a print line, using plural bi-color ribbons or a single multi-color ribbon, so as to provide plural color portions of different colors. The printer comprises plural print head units corresponding to the plural color portions of the ribbon or ribbons, and support and feed devices for supporting the paper, ribbon or ribbons and the print head units, such that the color portions of the ribbon or ribbons in opposed relation with the print head units are spaced from each other along the print line and arranged in order of brightness of the colors thereof in selected one of the opposite printing directions along the print line. An assembly of the ribbon or ribbons and the print head units is moved along the print line relative to the paper. A switching device is provided to reverse the order of brightness of the color portions of the ribbon or ribbons when the printing direction is reversed, to maintain the order of brightness in the currently selected printing direction.

REFERENCES:
patent: 4003460 (1977-01-01), Gray et al.
patent: 4403874 (1983-09-01), Payne et al.
patent: 4426168 (1984-01-01), Jozuka et al.
patent: 4528576 (1985-07-01), Koumura et al.
patent: 4543001 (1985-09-01), Tanaka et al.

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