DTF Glossary
W1 channel
W1 is a conventional name for the first white-ink spot plane in some DTF file and RIP workflows. It is a label, not a universal standard or guarantee of mapping. The receiving queue must still discover the plane, interpret its polarity, assign it to white ink, and preserve registration with colour.
In practice
Additional white planes may use W2 and later labels when the chosen export and RIP contract calls for them. The number in the name does not define density, print order, or duplication by itself.
The NestSheet Production DTF TIFF contains CMYK plus one W1 white channel: five channels in total. It is a mirrored 300 dpi TIFF for MainTOP. The selected sheet-wide choke is applied to that white separation.