| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for easily and inexpensively determining a time to replace a developing solution in a printer. <P>SOLUTION: The method of determining the time to replace the developing solution includes: a process (a) for providing a reference card including sample patches of standard colors for predetermined colors, sample patches of test colors into which the standard colors change due to contamination, and standard color differences calculated from standard color values corresponding to the respective standard colors and measured standard contamination values corresponding to the respective test colors; a process (b) for inputting information about test patches for the predetermined colors into the printer, and printing the test patches; and a process (c) for comparing the sample patches with the test patches to determine whether to replace the developing solutions. Since the reference card is provided together with the printer including information about test patches, a user can easily determine the time to replace the developing solution. <P>COPYRIGHT: (C)2004,JPO |
