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    • 47. 发明授权
    • Automatic calibration of halftones
    • 自动校准半色调
    • US5649073A
    • 1997-07-15
    • US579962
    • 1995-12-28
    • Keith T. KnoxCharles M. HainsGaurav Sharma
    • Keith T. KnoxCharles M. HainsGaurav Sharma
    • B41J2/52H04N1/405H04N1/407
    • H04N1/405H04N1/4078
    • A calibration system, for calibrating a printer response to halftone images directed thereto, includes a test pattern, stored in a memory, providing a plurality of samples of combinations of printed spots, printable on a media by the printer; a gray measuring device, to derive a gray measurement of the samples of printed spots; a calibration processor correlating gray measurements with a particular combination of spots, and deriving parameters describing the printer response to the particular combination; generating at least one gray image correction, including a set of correction values selected in accordance with said the described printer response, and a calibration memory, storing the generated halftone patterns.
    • 校准系统,用于校准打印机对指向其的半色调图像的响应,包括存储在存储器中的测试图案,提供印刷点的组合的多个样本,可由打印机在介质上打印; 灰度测量装置,用于导出打印点样品的灰度测量; 校准处理器将灰度测量与斑点的特定组合相关联,以及导出描述对特定组合的打印机响应的参数; 产生包括根据所述打印机响应选择的一组校正值的至少一个灰度图像校正,以及存储生成的半色调图案的校准存储器。