IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
    1.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 有权
    图像形成装置和图像形成方法

    公开(公告)号:US20090167803A1

    公开(公告)日:2009-07-02

    申请号:US12323296

    申请日:2008-11-25

    CPC classification number: B41J2/2052

    Abstract: An image forming apparatus which forms a halftone image on a print medium by using a multipass process to scan a printhead N (N is an integer of 2 or more) times in a single area on the print medium and form dots by each scan operation includes a pass division unit which sets the print density of a scan operation in the first pass so as to prevent dots from overlapping with each other on the print medium, and sets the print densities of scan operations in the second to Nth passes, a tone reduction unit which generates print data of the respective scan operations in accordance with the print densities set by the pass division unit, and a printhead which prints a halftone image on a print medium on the basis of the print data generated by the tone reduction unit.

    Abstract translation: 一种图像形成装置,其通过使用多次处理在打印介质上在打印介质上的单个区域中扫描打印头N(N为2以上的整数)次而在打印介质上形成半色调图像,并且通过每次扫描操作形成点, 通过分割单元,其在第一遍中设置扫描操作的打印浓度,以防止点在打印介质上彼此重叠,并且将扫描操作的打印浓度设置在第二到第N遍,色调降低 根据由通过分割单元设置的打印浓度生成各扫描操作的打印数据的打印单元,以及基于由色调降低单元产生的打印数据在打印介质上打印半色调图像的打印头。

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