HP Designjet 5500 HP Designjet 5500 series - User Guide - Page 368

creating icc profiles hp designjet 5500 series welcome how do I ... tell me about ... the problem is ... legal notices glossary index creating icc profiles If you want to create your own ICC profiles for use with your printer (using any of the commercially available profiling software packages), the most important thing is to make sure that you use exactly the same configuration of application(s) and driver to print and measure the calibration target(s) as you will use later on when applying the profile. HP recommends using Native mode without Automatic Black Replacement (ABR), making sure that the application is sending device CMYK colors without any further conversions being applied. Black generation is one of the most important aspects of printer profile generation, but differs considerably from one profiling tool to another. If possible, HP recommends using the following black generation parameters for your printer: K ink start 35%; maximum K ink 100%; GCR type curve; total area coverage 280%. Good results can also be obtained with other settings, depending on the profiling software used. Six-color printers (with light cyan and light magenta inks) generally require the start of K ink to be delayed compared with traditional four-color printers, in order to avoid the grainy appearance caused by black dots in highlights and midtones. Automatic Black Replacement will do this for colors defined as device CMYK, but should not be used in conjunction with a profile that is itself already defining K ink start and other black generation parameters. When using the internal profiles with ABR enabled, the internal PS RIP will not apply ABR to colors generated by the profile (defined by the application as RGB or CIELab), but will apply ABR to colors defined by the application as device CMYK. For externally applied profiles the internal RIP cannot make this distinction, hence ABR should be disabled in this case. © 2002 hewlett-packard company file:///C|/Documents%20and%20Settings/---/Desktop/HP/html/p0086.htm [8/5/2002 3:29:42 PM]