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    • 4. 发明授权
    • Image forming apparatus capable of saving consumption of toner without deterioration of printing quality and method thereof
    • 图像形成装置能够在不降低打印质量的情况下节省调色剂的消耗和其方法
    • US06791714B1
    • 2004-09-14
    • US09417018
    • 1999-10-12
    • Takanari Ishimura
    • Takanari Ishimura
    • G06F1500
    • G03G15/553G03G15/556
    • A printer has a spreading unit 1 for spreading data sent from an upper apparatus into bit map data, a memory unit 2 for storing the bit map data spread by the spreading unit 1, an extracting unit 3 for extracting a contour-protecting shaped matrix which prevents the disappearance of a contour of an image, and a printing unit 7 which stores template data and a toner consumption saving pattern and which prints dot data of the bit map data based on a shape of the contour-protecting shaped matrix. The extracted matrix data are compared with the template data. When the matrix data corresponds with the template data, a noted pixel positioned in a central portion of the matrix is replaced with the toner consumption saving pattern. Accordingly, numbers of black dots can be decreased in a part of image data to save toner consumption in the printer.
    • 打印机具有用于将从上位装置发送的数据扩展为位图数据的扩展单元1,用于存储由扩展单元1扩展的位图数据的存储单元2,用于提取轮廓保护形状矩阵的提取单元3, 防止图像轮廓的消失,以及存储模板数据和调色剂消耗保存模式的打印单元7,并且基于轮廓保护成形矩阵的形状来打印位图数据的点数据。 将提取的矩阵数据与模板数据进行比较。 当矩阵数据对应于模板数据时,位于矩阵的中心部分的注意像​​素被替换为调色剂消耗省电模式。 因此,在图像数据的一部分中可以减少黑点的数量,以节省打印机中的调色剂消耗。