Method and apparatus for forming a full-color image

Details Method and apparatus for forming a full-color image Method and apparatus for forming a full-color image

1993-07-19

1995-04-04

Braun, Fred L.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347129, 355327, 358533, 358534, H04N 140, G03G 1501

Patent

active

054041562

ABSTRACT:
A full-color image printing method and apparatus operate to form mono-color toned images of individual color components using multiple, e.g., four, mono-color imaging units provided in correspondence to the color components and single-lined screen processors provided in correspondence to the imaging units, and overlap the mono-color toned images sequentially to produce a full-color image on a sheet of print paper. The screen angle is made different among the mono-color toned images and the line pitch of the screen is made virtually equal for all mono-color toned images with the intention of retaining a high-grade color quality and preventing the degradation of picture quality such as a degraded tone quality.

REFERENCES:
patent: 4012137 (1977-03-01), Goren
patent: 4090786 (1978-05-01), Bobbe
patent: 4903123 (1990-02-01), Kawamura et al.
patent: 4922335 (1990-05-01), Outa et al.
patent: 4980757 (1990-12-01), Nishigaki
patent: 5055923 (1991-10-01), Kitagawa et al.
patent: 5184213 (1993-02-01), Ishida

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