公开(公告)号：US5845056A

公开(公告)日：1998-12-01

申请号：US737287

申请日：1997-01-09

Applicant: Thomas Kohler ,  Klaus Lang ,  Andreas Netthorn

Inventor： Thomas Kohler ,  Klaus Lang ,  Andreas Netthorn

IPC: B41J2/525 ,  G03F3/08 ,  G03F3/10 ,  H04N1/40 ,  H04N1/52 ,  H04N1/60 ,  H04N1/46

CPC classification number: H04N1/6011 ,  H04N1/40012

Abstract: A method and apparatus are provided for producing a rastered gray composite proof in which the color values of the chromatic printing inks "cyan", "magenta" and "yellow" are united to brightness-equivalent gray scale values for simple advance monitoring of a color printing. The gray scale values to be printed on the gray composite proof are corrected compared to the gray scale values of the chromatic printing inks for the color printing represented by the color separation values, being corrected to different percentage parts that respectively correspond to the subjectively sensed brightness impression of the chromatic printing inks relative to "black". The color separation values of the chromatic printing inks are converted into individual bit maps by different raster functions such that the recorded pixels of the chromatic printing inks lie next to one another on the recording material. The individual bit maps of the chromatic printing inks are united to form an overall bit map by an OR operation. The control bits of the overall bit map control a black-and-white printer that prints the gray composite proof on the recording material pixel-by-pixel, whereby the control bits of the overall bit map decide whether the pixel is printed as raster points or parts of the raster points or is not printed.

Abstract translation: PCT No.PCT / DE96 / 00423 Sec。 371日期1997年1月9日 102（e）日期1997年1月9日PCT 1996年3月7日PCT公布。 第WO96 / 27976号公报 日期1996年9月12日提供了一种用于制造斜面灰色复合材料证明的方法和装置，其中彩色印刷油墨“青色”，“品红色”和“黄色”的颜色值与亮度等效灰度值相结合以简单 提前监控彩色打印。 相对于由颜色分离值表示的彩色打印的彩色印刷油墨的灰度值，校正灰度复合图案上要打印的灰度值，其被校正到分别对应于主观感光亮度的不同百分比部分 彩色印刷油墨相对于“黑色”的印象。 通过不同的光栅功能将彩色印刷油墨的色分离值转换为单独的位图，使得彩色印刷油墨的记录像素在记录材料上彼此相邻。 彩色印刷油墨的各个位图被合并，以通过OR操作形成整体位图。 整个位图的控制位控制黑白打印机，逐个像素地在记录材料上打印灰色复合证明，由此整个位图的控制位决定像素是否被打印为光栅点 或部分光栅点或不打印。