HP Designjet 5000 HP Designjet 5000 series printer - User's Guide - Page 86

Introduction Solving Problems Media & Ink Image Quality Problems Solutions Ink Supply Problems Front-Panel Media Problems Printer Options Image Error Other Other Problems Index Getting Help rendering intent in the CYMK setup, select "CMYK" as the output color space, and un-select the "Postscript Color Management" check box. In the printer driver, make sure that Automatic Black Replacement is disabled , and that no CMYK emulations are being used . If all of these conditions are met, the results of using a provided ICC profile externally or internally will be very similar. Creating ICC Profiles If you want to create your own ICC profiles for use with the HP Designjet 5000PS (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, 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 considerable from one profiling tool to another. If possible, HP recommends using the following black generation parameters for the HP Designjet 5000PS: 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 ink printers with light Cyan and light Magenta colorants in general require the start of K ink to be delayed compared to 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.