Printing Problems6-246TroubleshootingNOTEYou can also perform the same procedure from the touch panel display. (See "LineControl," on p. 3-20.)Gradation in the black or gray parts of the image does not appear smooth (the color changesstand out).Cause 'RGB Pure Black Process' is affecting the black or gray part of the gradation.Remedy Disable 'RGB Pure Black Process' in the Windows PS printer driver or Mac PSprinter driver and print the data again. (See the Help function on the printerdriver.)IMPORTANTIf you change the above settings, gray or black data is printed using CMYK toners.Therefore, the data may be printed in color, even if all pages are monochrome.NOTEYou can also perform the same procedure from the touch panel display. (See "RGB PureBlack Process," on p. 3-71.)The gray data appears grainy.Cause The RGB Pure Black Process setting, in combination with the Prioritize Printingof Lines and Text setting in the printer driver or Output Profile setting on thecontrol panel, is affecting the gray part of the data.Remedy Disable 'RGB Pure Black Process' and 'Prioritize Printing of Lines and Text' inthe Windows PS printer driver or Mac PS printer driver, and print the data again.(See the Help function on the PS printer driver.)IMPORTANTIf you change the above settings, gray or black data is printed using CMYK toners.Therefore, the data may be printed in color, even if all pages are monochrome.NOTEYou can also perform the same procedure from 'RGB Pure Black Process' or 'OutputProfile' in the touch panel display. To perform the 'Output Profile' setting, set to [Normal].(See "RGB Pure Black Process," on p. 3-71, and "Output Profile," on p. 3-69.)
