Adobe PHOTOSHOP 5.0, Руководство пользователя, Страница: 257 / 400

249 ADOBE PHOTOSHOP 5.0
User Guide
To remove an underlying spot color:
1
In the Channels palette, select the spot channel
whose color you want to print.
2
Choose Select > Load Selection.
To quickly select an image in a channel,
hold down Ctrl (Windows) or Command
(Mac OS), and click the channel in the
Channels palette.
3
For Channel, choose the spot channel from
step 1 and click OK.
4 To create trap when knocking out the under-
lying color, choose Select > Modify > Expand or
Contract depending on whether the overlapping
spot color is darker or lighter than the spot color
beneath it. For more information on trapping, see
“Creating color traps” on page 338.
5
In the Channels palette, select the underlying
spot channel that contains areas you want to
knock out. Press Delete.
This method can be used to knock out
areas from any channels under a spot
color, such as the CMYK channels.
6
If a spot color in one channel overlaps more
than one other spot color, repeat this process for
each channel that contains areas you want
removed.
About masks
Masks let you isolate and protect areas of an image
as you apply color changes, filters, or other effects
to the rest of the image. When you select part of an
image, the area that is not selected is “masked” or
protected from editing. You can also use masks for
complex image editing such as gradually applying
color or filter effects to an image.