发明名称 Printing device and print image processing device
摘要 A printing device includes a print head having a plurality of nozzles capable of ejecting ink on a print medium and of forming one or more types of ink dots on the print medium; an ink dot setting unit that determines an ink dot setting for each pixel of image data by comparing a gradient of the each pixel with, from among thresholds in a matrix for each of respective pixels, a threshold corresponding to the each pixel of image data; a print head controller that controls ejection of ink from each nozzle of the print head on the basis of an ink dot setting determined by the ink dot setting controller; and a threshold matrix correction unit that corrects a predetermined threshold of the matrix depending on ink output characteristics of each nozzle of the print head.
申请公布号 US7770993(B2) 申请公布日期 2010.08.10
申请号 US20050284177 申请日期 2005.11.21
申请人 SEIKO EPSON CORPORATION 发明人 YAMAKADO HITOSHI
分类号 B41J2/21 主分类号 B41J2/21
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