发明名称 Printing apparatus and printing method
摘要 A printing apparatus and a printing method define an achromatic region and a chromatic region of image data. The image data is defined as an achromatic region when a difference between a maximum and a minimum values among R, G, B values corresponds to 1 % to 10 % of a range of values that R, G, B values are obtainable. In the achromatic region, the number of black and its derivative ink dots to be ejected per one pixel is 4 dots at the maximum. A chromatic region is defined as an area where does not satisfy the requirements of the achromatic region. In the chromatic region, the number of black and its derivative ink dots to be ejected per one pixel is 1 dots at the maximum. <IMAGE>
申请公布号 EP0976565(A3) 申请公布日期 2000.08.23
申请号 EP19990306042 申请日期 1999.07.29
申请人 CANON KABUSHIKI KAISHA 发明人 YASHIMA, MASATAKA;AOKI, KATSUMI;SHIBATA, TSUYOSHI
分类号 B41J2/21;B41J2/205;B41J2/525;G06F3/12;H04N1/23;H04N1/40;H04N1/46;H04N1/52;H04N1/60 主分类号 B41J2/21
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