Adobe PHOTOSHOP 5.0 User Manual page 256

248 CHAPTER 10
Using Channels and Masks
The spot color is converted to and merged with the
color channels. The spot channel is deleted from
the palette.
Before
After
Merging spot channels flattens layered images.
The merged composite reflects the preview spot
color information, including the Solidity settings.
For example, a spot channel with a solidity of 50%
will produce different merged results from the
same channel with a solidity of 100%.
In addition, the resulting merged spot channels
usually won't reproduce the same colors as the
original spot channels, because CMYK inks can't
represent the range of colors available from spot
color inks.
To export spot channels:
Save the file in DCS 2.0 format. For more infor-
mation, see "Saving files in Photoshop EPS or DCS
format" on page 315.
Adjusting overlapping spot colors
To prevent overlapping spot colors from printing
over, or knocking out, the underlying spot color,
remove one of the spot colors where they overlap.
To help you predict how colors will look when
printed, use a printed sample of the overprinted
inks to adjust your screen display.
Note: In some cases, you may want colors to
overprint, such as in varnishes and bump plates.