Oce ColorStream, User Manual

Page: 209 / 524

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Description Color space
The OCA color space including all OCA names is addressed in
the first row. This color space contains a small number of pre-
defined colors.
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The primary colors are always printed with 100% application
and without a raster.
■
The (R, G, B) secondary colors are each printed using 100%
mixtures of primary colors.
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The right part of the color row is printed with a predefined
raster.
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The 'Gray' field is not created using "composite black", but
with 50% K coloration (black only).
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A fixed coloration of 0% (no toner application) is used for
the 'White' field.
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The selection of color profiles and 'Rendering Intent' on the
operator panel has no effect on the OCA colors. As a result,
color row 1 is not always identical to color rows 2 to 4.
OCA color space
(Named Colors)
A unique RGB value is assigned to each OCA name in
MO:DCA. This RGB value is used for the RGB color space in
the second row. RGB color space
(sRGB)
The RGB values are converted into the CieL*a*b* space and
printed. CieL*a*b* space
with the recom-
mended D50 white
point
The L*a*b* values are printed as an Indexed Color in a Color-
ManagementResource (Color Palette CIELAB Tag with the
recommended D50 white point). Indexed Color
Color rows 2 to 4 must correspond color-wise in a vertical direction.
Object Container Space
Here, the same RGB values are used as for the PTOCA color spaces.
For Object Container Space, 'Perceptual' is used as the default 'Rendering Intent' in
color management.
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Description Color space
The RGB values are printed as TIFF (LZW). TIFF (LZW)
The RGB values are printed as JPEG. JPEG
Chapter 6 - Operating the Printing System 209
Test Print Job 'ColorProof.ipds' — Page 1