HP Designjet A3/B HP Designjet 10/20ps - Color Management Profiling
HP Designjet A3/B - Graphic Printer Manual
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- HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 1
. • RGB profile describes the color space of RGB images and vector graphics that do not have an embedded RGB profile. ICC output profile The ICC output profile describes the printing characteristics of the HP DesignJet on the print medium selected (Figure 1b). • Profile. Selection of a Medium - HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 2
printer or RIP and sets the same standard RGB profile. both assume that the user does not have access to the press profile.To proof in CMYK mode in Photoshop, begin with the RGB workflow, then convert your images to CMYK using the steps outlined on page 5. CMYK Simulation Workflow The HP DesignJet - HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 3
all jobs in the Default Settings dialog. a. input CMYK profile (unless embedded in images) b. input RGB profile (unless embedded in images) c. HP DesignJet profile (automatically selected with Media) a b c 2 2. Color settings for individual jobs can be changed by selecting the job in the RIP - HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 4
DesignJet RIP will use them. If not, it will apply the RGB profile you set in the RIP software.) 5. If you later send the RGB images to a service provider for high-volume output, these prints should also match the screen if the provider uses an RGB printer or RIP and sets - HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 5
to CMYK mode using one of two methods: a. Convert to Profile, using your 2a 2b standard RGB profile as the Source Space and your printer profile as the Destination Space. b. Mode CMYK command, in which the Working Space profiles you chose in Color Settings are the source and destination - HP Designjet A3/B | HP Designjet 10/20ps - Color Management Profiling - Page 6
Fuji FinalProof) as the CMYK Working Space in Photoshop. Embed the profile when saving the image. 3. Also load the profile into the DesignJet ICC Profile folder: • hp designjet 10/20 RIP>ICC Profiles>CMYK, which makes the profile available in the "CMYK input profile" popup menu. 4. Set the CMYK
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Color Management on the
HP DesignJet 10/20ps
Introduction
The HP DesignJet 10/20ps color
proofers enable repeatable and accurate
color reproduction through the use of a self-
calibration feature and color management
profiles. International Color Consortium
(ICC) profiles are standard files describing
the color reproduction characteristics of
input and output devices.These profiles can
be used by ICC-compliant applications,
including desktop publishing programs and
RIPs like the DesignJet. ICC profiles can be
embedded in certain image types including
TIFF, EPS, PDF, and JPEG files, where they
identify the color characteristics of images.
The embedded profiles help maintain consis-
tent color throughout your workflow and
can be read by the HP DesignJet 10/20ps
RIP when they are processed.
Perform color correction
The DesignJet RIP software setting that
lets you match colors is the “Perform color
correction” check box (Figure 1).The default
setting is “on” (checked).Turn off color cor-
rection (1) if you are printing a color man-
agement target to make a color profile of the
printer or (2) if you are color-managing
images in another application such as
Photoshop, a page-layout program, or a
workflow application. Otherwise, use the
color correction feature to get the color
match you want. Settings for individual jobs
can be changed by highlighting the job and
selecting Job Properties (Figure 2).
ICC input profile
Input profiles describe the color spaces
of files to be printed on the DesignJet
(Figure 1a). If a file has an embedded ICC
profile, the DesignJet RIP reads this file and
assigns it as the input profile. Files without
embedded ICC profiles are assigned the
default ICC input profile you select in RIP.
•
CMYK profile
describes the color space
of CMYK images and vector graphics
printed on the DesignJet that do not have
an embedded CMYK profile.
•
RGB profile
describes the color space of
RGB images and vector graphics that do
not have an embedded RGB profile.
ICC output profile
The ICC output
profile describes the
printing characteristics
of the HP DesignJet on
the print medium select-
ed (Figure 1b).
•
Profile.
Selection of a
Medium (top of dialog
box) automatically
selects the appropriate
HP ICC profile for that
substrate.The user may
also make a custom
profile of the medium
by printing a color
management target on
the proofer and read-
ing this target with a
profiling program.
•
Rendering Intent.
Rendering intent
describes the way out-of-gamut colors are
brought into gamut. Use
relative colori-
metric
for proofs that do not simulate the
paper color and for spot colors, such as
PANTONE® named colors. Use
absolute
colorimetric
if you would like to simulate
the paper color on proofs (e.g., to color
the proof background yellow for news-
print or a yellowish paper).
Perceptual
is
useful for photographs when the Design-
Jet print will be the final output.
1
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Draft 1.5 • 4/10/02
RENDERING INTENTS
•
Relative Colorimetric—for proofs
without paper simulation and for spot
colors
•
Absolute Colorimetric—for proofs
with paper simulation (e.g., a proof
for newsprint will have a yellow
background)
•
Perceptual—for photos printed on
the DesignJet as final output (not to
simulate another process)