Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-11-25
1999-12-21
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 12, 347 9, 358296, B41J 2145, B41J 215, B41J 2938, H04N 121, H04N 123
Patent
active
060039701
ABSTRACT:
Using a recording head with 8 nozzles, and feeding paper or recording medium by an amount equal to 2 nozzles at each recording scan, recording is made with respect to first and second rasters in a first recording scan by #7 and #8 nozzles. At this moment, the #7 nozzle has a SMS printing rate of 1/3, and the #8 nozzle has a printing rate of 1/4. Initial values of a context memory are both 0. After the paper is fed by 2 nozzle distance, in a second recording scan, first--fourth rasters are recorded by #5-#8 nozzles. Rasters to be recorded are increased by 2 at every paper feed by 2 nozzle distance, and after 8 rasters, the rasters to be recorded are decreased by 2. Since the printing rate of the odd number nozzle is larger than that of the even number nozzle, an odd numbered raster is recorded partly two times by the odd number nozzle, thereby making emphasis printing uniformly over the entire image.
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Fujita Miyuki
Kato Masao
Kato Minako
Canon Kabushiki Kaisha
Le N.
Nguyen Thinh
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