Ink-jet recording apparatus and method using asynchronous masks

Details Ink-jet recording apparatus and method using asynchronous masks Ink-jet recording apparatus and method using asynchronous masks

1994-06-27

1998-10-06

Barlow, Jr., John E.

Incremental printing of symbolic information

Ink jet

Controller

347 12, 358298, B41J 2205, H04N 121

Patent

active

058184740

ABSTRACT:
Random masks each having a given size and defining a random array of non-record pixel locations and record pixel locations are placed in association with record areas in mask registers. Using the placed masks, record data is thinned-out and supplied to a recording head. An image is then recorded. Thus, since thinning-out masks do not have periodicity, any inherent density nonuniformity loses periodicity. Consequently, high-definition images can be produced.

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L. Smith, "Halftone Image Produced by Pseudo-Random Bit Generator", IBM Technical Disclosure Bulletin, vol. 17, No. 7, pp. 1858-1859, Dec. 1974.

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