Digital printing on a black-back sticker means creating a full-color (or single-color) design on sticker material that has a dark or black backing / base layer. The “black-back” or “block-out” backing makes the sticker opaque: it prevents light or any background showing through the sticker. Because of this backing, colours on the sticker front appear more vibrant and true, and text or graphics remain clear even when applied over brightly coloured or translucent surfaces.
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