Spot Color That Multiplied Into Five Plates
A packaging insert uses a brand orange defined as a Pantone spot color, plus a CMYK image with a gradient, plus black body text. The document was set up with the swatch named 'PANTONE 021 C' but the designer also created a second swatch named 'Brand Orange' as a process CMYK build for a web banner reused in the same file. On export, the printer reports five plates: Cyan, Magenta, Yellow, Black, and the spot. The brand orange areas look inconsistent - some match, some don't - and the printer asks whether the spot should be converted to process. The insert runs on a 4-color press.
1. Explain why there are five plates and why the orange areas look inconsistent, and recommend how to resolve the swatch conflict.
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Five plates: The document contains both a spot swatch ('PANTONE 021 C') and a process build ('Brand Orange'). Objects using the spot require a dedicated plate; objects using the process build use CMYK. Because both exist, the PDF carries the spot as a separate separation plus the four process plates.
Inconsistent orange: The two swatches are different color definitions - the Pantone spot and the CMYK build will not match exactly, especially if the CMYK build wasn't derived from the Pantone's LAB/CMYK equivalent. Objects using each will print differently.
Resolution:
- Decide on one definition. Since the press is 4-color, the spot must be converted to process. Use Swatches panel > Convert to Process on the Pantone swatch, or set the swatch's Color Mode to CMYK and enter the Pantone's recommended CMYK build.
- Map the duplicate: use Ink Manager (Window > Output > Separations Preview, or the Ink Manager in the Print dialog) to alias 'Brand Orange' to the converted swatch, or globally replace the swatch via Find/Change > Object or the Swatches panel's 'Select All Unused' cleanup.
- Verify with Separations Preview that only four plates remain.
2. How would you verify the fix before sending the file, and what export setting ensures the spot doesn't reappear?
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Verification:
- Open Window > Output > Separations Preview, enable it, and check the Separations list - it should show only Cyan, Magenta, Yellow, Black.
- Use Preflight with a profile that flags spot colors, or check the Ink Manager for leftover spot inks.
- Inspect the Links panel and the Swatches panel for unused swatches; delete unused swatches so they can't be reintroduced.
Export setting: In the PDF export dialog, under Output, ensure the Color Conversion is set appropriately (e.g., Convert to Destination with the printer's CMYK profile) and that Output Intent matches. If the spot must remain as a spot for a different job, use 'Preserve' - but for this 4-color job, convert. Also check Simulate Overprint in the print dialog if proofing on a composite printer. The Ink Manager's alias setting is the safety net if a stray object still references the old swatch.