DTF Glossary
PSD and PSB
PSD is Adobe Photoshop’s version-1 document format; PSB is the large-document version-2 format. Adobe’s specification sets a 30,000-pixel-per-dimension boundary for PSD and 300,000 for PSB. Either can carry extra spot channels, but the extension does not prove a RIP accepts the file or preserves its production mapping.
In practice
A production PSD/PSB may be a flattened colour composite plus named white or varnish spots rather than a reconstruction of original layers, type, vectors, masks, or editing history. State which representation the writer actually emits.
Keep an editable Photoshop master in the artwork archive. Export transparent PNG artwork for upload to NestSheet; the current Production DTF preset writes a mirrored 300 dpi CMYK + W1 TIFF for MainTOP.