Color Separation, Continued
Spot color
Spot color is a process you use to indicate areas for color separation by
placing an overlay over a simple black-and-white line illustration. Make
precise instructions to the printer on this overlay. If the drawing is
complicated or has detailed color areas, make the color separations yourself.
Create an overlay for each primary color, register it to the master, and
indicate the desired color of ink. This process produces flat color with no
modeling or shading. You create modeling or single color variations by
using a shading sheet in the artwork or requesting the camera person to use a
benday sheet.
Fake color
Fake color involves printing from original line artwork or continuous tone
photograph by indicating color or screen tints on a separate overlay. The
outlines of the image define the various color areas to strip in color panels.
Duotones
negatives is shot flatter than the other so that one plate will supply color
while the other plate supplies detail. The detail is usually printed in the
darker or dominant ink. You may use any combination of inks or black ink
and a grey ink (called a true duotone). The two plates printed together
produce a duotone print that appears to have more dimension than the
original image.
Using only two plates to print a color image with a dark dominant ink and a
lighter secondary ink, results in a print known as a duotone. Two negatives
are shot at different angles from a single piece of artwork. One of these
Bourges sheets
In the creation of artwork for color reproduction, you want to most nearly
approximate the finished product before you commit yourself to the expense
of color printing. Bourges sheets are transparent color sheets available in
various colors and densities. By building up, removing, or cutting out
sections of the sheets, you create color copy in separate overlays. The
combined overlays simulate the printed product.
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