Adobe PHOTOSHOP 5.0 User Manual page 255

6 If desired, enter a name for the spot channel.
If you chose a custom color in step 4, the channel
automatically takes the name of that color.
Remember that it's important to name spot colors
so they'll be recognized by other applications
reading your file. Otherwise the file might not
print correctly—or print at all.
Click OK.
7
To convert an alpha channel to a spot channel:
In the Channels palette, double-click the alpha
1
channel.
2 If needed, rename the channel.
3 Select Spot Color.
Click the color box and choose a color, as
4
described in "Using the Adobe Photoshop Color
Picker" on page 218.
5 Click OK.
The areas of the channel containing grayscale
values are converted to spot color.
6 If desired, choose Image > Adjust > Invert to
apply the spot color to the selected area of the
channel.
To edit a spot channel:
Select the spot channel in the Channels palette.
1
Use a painting or editing tool to paint in the
2
image. Paint with black to add more spot color at
100% opacity; paint with gray to add spot color
with lower opacity.
Unlike the Solidity option in the Spot Channel
Options dialog box, the Opacity option in the
painting or editing tool's Options palette deter-
mines the actual density of ink used in the printed
output.
To change spot channel options:
Do one of the following:
1
Double-click the spot channel name in the
•
Channels palette.
Select the spot channel in the Channels
•
palette, and choose Channel Options from the
palette menu.
Change the channel options as described in the
2
previous procedure, and click OK.
To merge spot channels:
In the Channels palette, select the spot channel
1
you want to merge.
Choose Merge Spot Channel from the
2
palette menu.
ADOBE PHOTOSHOP 5.0 247
User Guide