公开(公告)号：EP1439692A2

公开(公告)日：2004-07-21

申请号：EP04076244.5

申请日：1998-03-31

申请人： SEIKO EPSON CORPORATION

发明人： Kuwata, Naoki, c/o Seiko Epson Corporation ,  Maruyama, Takashi c/o Seiko Epson Corporation ,  Osawa, Michinao c/o Seiko Epson Corporation

IPC分类号： H04N1/60

CPC分类号： H04N1/40006 ,  H04N1/4015 ,  H04N1/603 ,  H04N1/6033

摘要： A conventional color printing device has a problem that the device cannot deal with a case where deviation occurs in a color ink ejecting amount due to age softening of a print head. Further, it also has a problem that an adjustment at a factory is required every device to increase manufacturing process, thereby being troublesome.
A deviation in output characteristics of a printer 31 is written in a PROM area of a print head unit 31a1 as well as the PROM area is read, or a predetermined adjusting patterns are printed and the one closest to gray is selected among this patterns to be inputted, so that the deviation in output characteristics in the printer 31 can be received. Moreover, a color correction look-up table is formed to perform a color conversion so as to eliminate this deviation for rewriting a color conversion look-up table, whereby a color correction foreseeing the deviation is performed by referring to the rewritten color conversion look-up table when a printing operation is actually executed based upon color image data. Therefore, a printed matter does not have the deviation existing in a hardware of the printer 31, thereby capable of faithfully reproducing color.

摘要翻译： 传统的彩色打印装置具有这样的问题：该装置不能处理由于打印头的老化软化而导致的彩色墨水喷射量发生偏移的情况。 此外，还存在为了增加制造过程而需要在工厂进行调整的问题，因此麻烦。 打印机31的输出特性的偏差被写入打印头单元31a1的PROM区域中，以及读取PROM区域，或者打印预定的调整图案，并且选择最接近灰色的调色图案 该图案被输入，从而能够接收打印机31的输出特性的偏差。 此外，形成颜色校正查找表以执行颜色转换，以消除用于重写颜色转换查找表的该偏差，由此通过参考重写的颜色转换查找表执行预测偏差的颜色校正， 基于彩色图像数据实际执行打印操作时的表格。 因此，印刷品在打印机31的硬件中不存在偏差，从而能够忠实地再现颜色。