Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2008-09-24
2011-11-15
Martin, Laura (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
C347S014000, C347S015000
Reexamination Certificate
active
08057007
ABSTRACT:
An image recording apparatus includes: a recording head which has a plurality of recording elements; a characteristics information acquisition device which acquires information that indicates recording characteristics of the plurality of recording elements; a correction object determination device which selects from the plurality of recording elements a correction object recording element to be corrected; a correction range setting device which selects from the plurality of recording elements N correction recording elements to be used for correcting an output density, N being an integer not less than 2; a virtual dot setting device which sets a virtual dot to be arranged between dots recorded by the selected correction recording elements; a correction coefficient determination device which determines density correction coefficients for the N correction recording elements in accordance with correction conditions that reduce a low-frequency component of a power spectrum representing spatial frequency characteristics of the density non-uniformity; a correction processing device which performs calculation for correcting the output density by using the density correction coefficients; and a drive control device which controls the plurality of recording elements in accordance with the corrected output density.
REFERENCES:
patent: 2005/0083360 (2005-04-01), Nakanishi et al.
patent: 2006/0262151 (2006-11-01), Chiwata
patent: 2006-212907 (2006-08-01), None
patent: 2006-347164 (2006-12-01), None
Birch & Stewart Kolasch & Birch, LLP
FujiFilm Corporation
Martin Laura
LandOfFree
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