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公开(公告)号:US07924467B2
公开(公告)日:2011-04-12
申请号:US11686488
申请日:2007-03-15
申请人: Nobuo Waksugi
发明人: Nobuo Waksugi
IPC分类号: H04N1/405
摘要: An image forming apparatus prints a first image data rendered at a first number of halftone levels based on a second image data rendered at a second number of halftone levels larger than the first number of halftone levels. A dot forming section forms lines of pixels on a print medium, the lines including a number of groups of sub lines of sub dots. The groups are aligned such that the sub lines of sub dots extend in traverse directions substantially perpendicular to an advance direction. A controller controls the dot forming section such that a selected number of sub dots in the advance direction are combined to form a pixel. Sub dots on the same sub line have the same exposure energy and sub dots on different sub lines in the same pixel have different exposure energies.
摘要翻译: 图像形成装置基于以比第一数量的半色调电平大的第二数量的半色调电平呈现的第二图像数据来打印以第一数量的半色调水平呈现的第一图像数据。 点形成部分在打印介质上形成像素线,该线包括多个子点子线组。 这些组对准,使得子点的子线在大致垂直于前进方向的横向方向上延伸。 控制器控制点形成部分,使得在提前方向上的选定数量的子点被组合以形成像素。 同一子线上的子点具有相同的曝光能量,同一像素中的不同子线上的子点具有不同的曝光能量。