DTF Glossary
White underbase
A white underbase is a separate ink layer that backs the colour in a DTF transfer. Its coverage helps the printed colour remain visible on the garment. Prepress or the RIP prepares that white geometry from the artwork, then the receiving queue maps the separation to the printer’s white ink.
In practice
The mask needs an explicit source, polarity, name, and mapping. A clean colour edge can still produce wrong white if threshold or choke is unsuitable; a correct mask can still fail through RIP mapping or physical registration.
NestSheet derives white from transparent PNG artwork and offers 0, 1 or 2 px choke for the whole sheet. Canvas views support artwork and coverage inspection. Check final choke and fine detail in the W1 separation of the exported MainTOP TIFF.