Colour issues can be caused by various reasons. In this instance, black pressing green is caused by one of the following:
The black cartridge has expired: The first thing to check if the black is pressing green is whether the expiration date on the cartridge has passed. The expiry date is located on the end of the cartridge as well as on the white label located on the side. If the cartridge has expired, we recommend it be replaced for a new one. You will then need to flush the new ink through the ink tubes and print head. To do this, you may print 10 black PRNs. You can access this through the SPM menu > Printer utilities and select the full bleed option.
If you have recently replaced your ink cartridge and are now experienceing blacks pressing green, it could be that your previous ink cartridge was expired. If this is the case, then we would recommend you also print 10 black PRNs in order to flush the new ink through the lines.
Not printing through the Print Manager or incorrect settings: The issue could also be caused by not printing using the Sawgrass Print Manager or, if you are printing from a software other than CreativeStudio, incorrectly configured settings. If you are printing from either Photoshop, CorelDRAW or Illustrator, you may verify the correct settings using one the colour settings articles.
Enable ColorSure palette: Depending on the paper and substrate you are using ,you may find that enabling the ColorSure palette under the Colour tab option in the Print manager settings can resolve this issue. When enabled, the ColorSure palette will lay down a bit more ink than normal in order to achieve a darker black.
Poor quality substrate or paper: Another cause for this issue could simply be that the paper and/or substrate you are using is not of high enough quality. Some substrates do not have a thick enough polymer coating in order to achieve a finished product of high quality.