One-Dimensional, Two-Dimensional, and Spot-Color Management and Control Methods - Control of Color Imaging Systems: Analysis and Design - page 462

TABLE 8.10
Example of a PostScript Document with
Pantone Spot Colors

%!PS-Adobe-3.0 EPSF-3.0
%%Creator: Adobe Illustrator(R) 8.0
%%AI8_CreatorVersion: 8
%%For: (John Stanzione) (Spot Color Source)
%%Title: (solid to process.eps)
%%CreationDate: (5 = 24 = 01) (1:02 PM)
%%BoundingBox: 0 0 0 0
%%HiResBoundingBox: 0 0 0 0
%%DocumentProcessColors:
%%DocumentSuppliedResources: procset Adobe_level2_AI5 1.2 0
%% þ procset Adobe_ColorImage_AI6 1.3 0
%% þ procset Adobe_Illustrator_AI5 1.3 0
%% þ procset Adobe_cshow 2.0 8
%% þ procset Adobe_shading_AI8 1.0 0
%AI5_FileFormat 4.0
%AI3_ColorUsage: Black&White
%AI3_IncludePlacedImages
%AI7_ImageSettings: 1
%%CMYKCustomColor: 0 0 0.51 0 (Color name)
%% þ 0 0 0.79 0 (Color name)
%% þ 0 0 0.95 0 (Color name)
%% þ 0 0.03 1 0.38 (Color name)
%% þ 0 0.03 1 0.6 (Color name)
%%

þ 0 0.07 1 0.5 (Color name)

%% þ 0 0.02 0.81 0 (Color name)

%% þ 0 0.04 0.62 0 (Color name)

%% þ 0 0.02 0.95 0 (Color name)

or %%RGBCustomColor comments in the body of the document. Table 8.10
provides an example of a PostScript document with Pantone spot colors and comments
describing the Pantone colors. As shown in the table, %%CMYKCustomColor
provides an approximation of the custom color (spot color) CMYK values speci

ed
by the color name in parentheses. The four components (cyan, magenta, yellow, and
black) are speci ed as numbers from 0 to 1, representing the percentage of that

process color. %% þ '' identi es a continuation line. So, to find additional colors,

''

the detection routine examines lines starting with %%CMYKCustomColor and

'' ''

lines immediately following that begin with Alternatively, an approach

described in Ref. [10], which describes some methods of spot-color snif

%% þ .

'' ''

ng from an

encapsulated PostScript file, is also applicable. If no spot colors are identi ed in the

image file and sends the image to

production. If spot colors are present, the spot-color control algorithm is activated

file, the image-processing computer RIPs the