Printer and feeding control method

Details Printer and feeding control method Printer and feeding control method

2005-11-01

2005-11-01

Chau, Minh (Department: 2854)

Typewriting machines

Sheet or web

Including programmed-control-system for record-medium feed

C400S583000, C400S611000, C347S009000

Reexamination Certificate

active

06960037

ABSTRACT:
An ink jet head is fed in a main-scan direction to record one line on a recording paper. Thereafter, the recording paper is fed in a sub-scan direction for one line. A corrected feeding amount A is calculated by adding a correction value C1to a basic feeding amount B. The correction value C1is determined by a formula, C1=2·D·(R−½), wherein p represents an interval between dots recorded on recording paper in the sub-scan direction, and k represents a range of unevenness in the feeding amount caused by structural factors of sub-scan feeding means. For example, D=(p−k)/2. R is a random number in a range between 0 and 1. Gradation unevenness and/or black and white streaks caused by periodical feeding unevenness become inconspicuous since the correction value C1is changed on a random basis.

REFERENCES:
patent: 5847721 (1998-12-01), Ogata et al.
patent: 5988790 (1999-11-01), Koike et al.
patent: 6116795 (2000-09-01), Ogasawara
patent: 6328400 (2001-12-01), Yonekubo et al.
patent: 6371609 (2002-04-01), Oikawa
patent: 60-107975 (1985-06-01), None
patent: 07-052465 (1995-02-01), None

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