Incremental printing of symbolic information – Ink jet – Controller
Patent
1991-05-10
1994-10-04
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Controller
358298, B41J 205
Patent
active
053530527
ABSTRACT:
A correction data production apparatus includes a detecting unit for reading a test pattern formed by a recording head having a plurality of recording elements constituting an array, and for detecting a density distribution of a range of the array of the plurality of recording elements, a corresponding unit for causing the density distribution detected by the detecting unit to correspond to the plurality of recording elements on the basis of a reference position where a density of an end portion of the density distribution reaches a predetermined threshold value, a production unit for producing correction data for an image formation density uniforming drive conditions in correspondence with the plurality of recording elements on the basis of the density distribution corresponded by the corresponding unit, and a changing unit for changing the threshold value in accordance with characteristics of the test pattern.
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Danzuka Toshimitsu
Fukushima Hisashi
Izumizaki Masami
Miura Yasushi
Moriguchi Haruhiko
Bobb Alrick
Canon Kabushiki Kaisha
Fuller Benjamin R.
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