Printing Color Separations - Adobe PHOTOSHOP 5.0 User Manual

Click the Auto button in the Halftone Screens
dialog box to set the optimal screen angles and
frequencies (see "Selecting halftone screen
attributes" on page 335). Make sure that you select
Use Accurate Screens in the Auto Screens dialog
box if you're printing to an imagesetter equipped
with PostScript Level 2 (or higher) or an Emerald
controller.
Note: The recommended screen angles and
frequencies for quadtones are based on the
assumption that channel 1 is the darkest ink and
channel 4 is the lightest ink.
To print separations of a duotone image, choose
File > Print. You do not have to convert duotone
images to CMYK to create separations. Converting
to CMYK mode converts any custom colors to
their CMYK equivalents.
Exporting duotone images to other
applications
To prepare a duotone image for exporting to a
page-layout application, save the image in EPS
format. Keep in mind that it's important to name
custom colors so they'll be recognized by the other
application. Otherwise the image won't print
correctly—or might not print at all.

Printing color separations

Once you've applied the spot color or colors you
want to either a duotone or a CMYK image, you
can print separations for color in the image. See
"Adding spot colors" on page 245 for more infor-
mation.
If you are printing an image from another appli-
cation and want to print spot channels to spot
color plates, you must first save the file in DCS 2.0
format. DCS 2.0 preserves spot channels and is
supported by applications such as Adobe
PageMaker and QuarkXPress.
To print separations from Photoshop:
Choose File > Print.
1
2 On the Macintosh, choose Adobe Photoshop
5.0 from the dialog box menu.
3 For Space, choose Separations.
4 Click OK. Separations are printed for each of
the colors in the image.
To prepare an image with spot channels for printing
from another application:
In the General Preferences dialog box, select
1
Short Pantone Names. (This step is not necessary
if you are exporting to Adobe Illustrator 7.0 or
Adobe PageMaker 6.5.)
2 If the image is a duotone, convert to Multi-
channel color mode.
3 Save the image in DCS 2.0 format. Be sure to
deselect the Include Halftone Screen and the
Include Transfer Function options.
(See "Saving files in Photoshop EPS or DCS
format" on page 315.)
4 Open or import the image in the application
you will be printing from and set your screen
angles. Make sure that you've communicated to
the printer the spot color you want for each of
the color plates.
ADOBE PHOTOSHOP 5.0 343
User Guide