My packaging looks black. Why does the printer say it uses several inks?

Define the promised production setup

Ask the printer whether the job is one specified spot ink or a particular process-black workflow. Those are different instructions. Record the required separation name and accepted file format. A logo copied from a rich-color document may look black while retaining multiple color channels or raster effects.

Adobe’s separation guidance describes inspecting color plates. Use the preview in appropriate production software and ask the receiving printer to confirm its interpretation. Do not assume that desaturating a screenshot produces a one-plate production file.

Inspect plate activity

A listed swatch alone is not enough; inspect which objects print on the active plates. Conversely, do not delete a production separation merely because its preview is unfamiliar. Confirm its role with the supplier.

Compare the final exported file

For a fictional kraft sleeve intended for one dark ink, inspect the supplier-bound export and toggle the relevant plates. Check the small logo, pale shading and all placed graphics. Make a test proof through the intended workflow. Retain the original editable concept and a separately approved one-ink file so a later edit does not silently reintroduce full-color artwork.

Approve ink count and legibility separately

A true single-ink file can still have unreadable small text or unsuitable fine lines on the chosen stock. Review the physical sample at actual size. Itemlume’s monochrome-looking packaging concept does not provide verified print separations. Record the printer-confirmed ink setup, file version and sample approval rather than labeling the image “one color” based only on its visible appearance.