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    • 4. 发明授权
    • Color printing apparatus
    • 彩色打印设备
    • US07301669B1
    • 2007-11-27
    • US09648613
    • 2000-08-28
    • Toshiyuki YamadaHiroyuki AbiruShiro KofujiNaoyuki UrataHitoshi Tamura
    • Toshiyuki YamadaHiroyuki AbiruShiro KofujiNaoyuki UrataHitoshi Tamura
    • G06F15/00C09B62/32
    • G06K15/00G06K2215/0065G06K2215/0077G06K2215/008G06K2215/0094
    • A color printing apparatus includes a printer driver for receiving a print instruction of print data issued from an application program, and for rasterizing the print data to produce con-tone/multi-bits bitmap data and bi-tone/single-bit bitmap data; a page memory for independently storing thereinto both the con-tone/multi-bits bitmap data and the bi-tone/single-bit bitmap data; a control unit for executing a control operation in such a manner that the con-tone/multi-bits bitmap data is converted into con-tone/multi-bits print data, the bi-tone/single-bit bitmap data is converted into bi-tone/single-bit print data, and at least one of the con-tone/multi-bits print data-and the bi-tone/single-bit print data is stored into the page memory in a bitmap format; and an output control unit for reading at least any one of the con-tone/multi-bits print data and the bi-tone/single-bit print data from the page memory, and for logically synthesizing the print data with each other to output the synthesized print data to a color printing unit, reducing the data amount of the bitmap data.
    • 彩色打印装置包括:打印机驱动器,用于接收从应用程序发出的打印数据的打印指令,并用于光栅化打印数据以产生连续/多位位图数据和双色/单位位图数据; 用于独立地存储同音/多位位图数据和双音/单位位图数据的页存储器; 用于执行控制操作的控制单元,使得音调/多位位图数据被转换为连音/多位打印数据,双音/单位位图数据被转换为bi 单位/单位打印数据,并且至少一个同音/多位打印数据和双色/单比特打印数据以位图格式存储到页面存储器中; 以及输出控制单元,用于从页存储器中读取至少任一个连音/多位打印数据和双色/单位打印数据,并且用于逻辑地将打印数据彼此合成以输出 将合成的打印数据发送到彩色打印单元,减少位图数据的数据量。