Ink-jet printing apparatus capable of increased image uniformity

Details Ink-jet printing apparatus capable of increased image uniformity Ink-jet printing apparatus capable of increased image uniformity

1997-07-11

2000-11-21

Pendegrass, Joan

Incremental printing of symbolic information

Ink jet

Controller

347 65, 347106, 358502, B41J 201

Patent

active

061492574

ABSTRACT:
A high resolution head having smaller ejection amount and a low resolution head having larger ejection amount are employed. With respect to an image to be printed, an image separating portion separates a portion of a field in an image from a portion other than the field. For the field, printing is performed by the low resolution head through process of an image processing portion and a head control portion. As a result of this, for the field in the image, large dot is formed to reduce gap between the dots. Thus, color of the field can be uniform.

REFERENCES:
patent: 4723129 (1988-02-01), Endo et al.
patent: 5208605 (1993-05-01), Drake
patent: 5821962 (1998-10-01), Kudo et al.
patent: 5867197 (1999-02-01), Aoki

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