Transparency and overprint control how objects interact in a print file. Both can be useful, but an ordinary screen preview may not reveal output problems. Confirm export settings and inspect the final PDF.
Transparency issues
PDF/X-4 supports live transparency in compatible workflows; flattening every file before export is not necessary. Older workflows may require controlled flattening. Follow the requested preset and check text, spot colors and artwork remain intact.
Overprint
Overprint retains underlying color separations rather than knocking them out. Black text is often intentionally overprinted, while accidental overprint on process-white objects can make them disappear. A dedicated opaque white-ink spot is different from process white.
Before you export
- Use Overprint Preview (or equivalent) to see how overprints will print.
- Preserve live transparency when supported; flatten only as required by the agreed workflow.
- If in doubt, export to PDF/X-4 or ask the printer how they want transparency handled.
Common mistake
Changing all overprint settings globally can break intentional trapping or specialty separations. Use overprint preview and separation inspection, then ask about unexpected results rather than turning every overprint on or off.
Technical references
Manufacturer references explain the technology, not our current equipment or stock. Confirm the process and file requirements for your specific order.