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Chapter 11. RECOLOR > Printing spot color channels

Printing spot color channels

Spot channel colors overprint all other image colors. The stacking order of a spot channel on the Channels palette controls the order in which that color overprints. To prevent a spot color from overprinting, you must manually knock out (delete) any areas from other channels that fall beneath the spot color shapes (read more about this in the Adobe Photoshop User Guide). And talk with your print shop to see if this step is necessary.

Choosing Merge Spot Channel (Channels palette menu) merges the spot color into the existing color channels, so you can then print a composite (single-page) proof on a color printer. Otherwise, non-merged spot channels will print as separate pages. Merging a spot color channel into the other color channels will change the actual spot color, because CMYK inks can't exactly replicate spot color inks. When a spot color channel is merged into other color channels, its Solidity value will determine the merged spot color's tint percentage. The lower the Solidity, the more transparent the newly merged color will be. All image layers are flattened when spot channels are merged.


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