Image output appparatus and image formation system for correctin

Details Image output appparatus and image formation system for correctin Image output appparatus and image formation system for correctin

1997-07-28

1998-11-17

Le, N.

Incremental printing of symbolic information

Ink jet

Controller

B41J 201

Patent

active

058383425

ABSTRACT:
A test image is formed by performing overlap printing using a plurality of printing heads provided for a printing agent of one color. Density data attained by reading this test image is averaged. On the basis of this average value, a common correction is performed for drive signals for the printing heads. This makes it possible to perform head density unevenness correction at a high efficiency in performing overlap printing by using the plurality of printing heads.

REFERENCES:
patent: 4675696 (1987-06-01), Suzuki
patent: 4725849 (1988-02-01), Koike et al.
patent: 5428380 (1995-06-01), Ebisawa
Patent Abstracts of Japan, vol. 16, No. 549, JP-A-04208468, Nov. 18, 1992.
Patent Abstracts of Japan, vol. 15, No. 293, JP-A-03104977, Jul. 25, 1991.
Patent Abstracts of Japan, vol. 15, No. 158, JP-A-03028727, Feb. 6, 1991.

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