Traditionally speaking, printing white ink under black ink has been relatively undesirable. In traditional screen printing, black ink is rarely given an underbase when printing on most garments. Likewise, omitting the white ink underbase from the black ink in your Direct to Garment (DTG) print can yield a far more dynamic print, with greater depth and character.
However, the inherent ink chemistry of some DTG ink sets is relatively restrictive, in the sense that the CMYK inks do not adhere well directly to the pretreat – in these cases, it becomes necessary to add a small amount of white ink under any CMYK print (including black ink prints) to ensure optimal wash fastness. The most notable case of this has been with the inks associated with the Epson F2000 DTG printer.
Some users have expressed an interest in learning how to increase the amount of white ink underbase generated beneath black ink, when printing with their Epson F2000 DTG Printer using the Kothari Print Pro RIP. This simple graphic shows how simple this really is!
For those unfamiliar with manipulating white ink TRC curves, we will add instructions in the coming days to access this feature.