Gemfury

bos / turboprint deb

Repository URL to install this package:
Details
turboprint / usr / share / doc / turboprint / html / 8-3.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<META NAME="author" CONTENT="f z">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-iso-8859-1">
<LINK REL="Start" HREF="index.html">
<LINK REL="Contents" HREF="index.html">
<LINK REL="Prev" HREF="8-2.html">
<LINK REL="Next" HREF="8-4.html">
<STYLE TYPE="text/css"><!--
BODY { font-family: sans-serif ; font-size: 10pt }
H1 { font-family: sans-serif  ; font-size: 14pt }
H2 { font-family: sans-serif ; font-size: 13pt  }
H3 { font-family: sans-serif ; font-size: 12pt  }
H4 { font-family: sans-serif ; font-size: 12pt  }
H5 { font-family: sans-serif ; font-size: 12pt  }
H6 { font-family: sans-serif ; font-size: 12pt  }
SUB { font-size: smaller }
SUP { font-size: smaller }
PRE { font-family: monospace }
--></STYLE>
</HEAD>
<BODY>
<A HREF="index.html">Contents</A>
<A HREF="8-2.html">Previous</A>
<A HREF="8-4.html">Next</A>
<HR NOSHADE>
<H2 class="western"><A name="__RefHeading___Toc15477_1469257139"></A>8.3
 Index card &bdquo;Color&ldquo;</H2>
 <P ALIGN="CENTER" STYLE="margin-bottom: 0cm"><IMG align="left" height="263" hspace="19" name="Grafik49" src="settings-color.png"
vspace="4" width="391"></P>
<BR clear="left">
<P class="western" style="margin-bottom: 0cm">
</P>
<H5 class="western">Intent (Rendering intent)</H5>
<P class="western">(only TurboPrint Pro and TurboPrint Studio)</P>
<P class="western">
<!--span lang=&quot;en-US&quot;-->
As the color spaces of your computer display and your printer are
 different (printers normally cannot reproduce as luminous colors as
 displays can) an exact reproduction of all colors is not possible.
 Therefore you need to make a compromise. It is up to you to decide how
 the colors of your document shall be transferred into printable colors.
 With some printer drivers not all rendering intents are available as
 they are not yet provided with new TurboPrint color profiles. If there
 are no TurboPrint profiles available for your printer you can generate
 an individual color profile - see chapter &ldquo;<A class="western"
href="10-.html#10.&quot;Profiles&quot;  - color profile administration|outline">

<!--span lang=&quot;en-US&quot;-->
10. Profiles - color profile administration</A>
<!--span lang=&quot;en-US&quot;-->
&quot;.</P>
<P class="western">The following rendering intents are available:</P>
<P class="aufz&auml;hlung-1-western"><B>Perception</B> &ndash; Standard
 setting</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
The color space of the document is
 reduced to fit into the printer&rsquo;s color space. All colors are shifted
 homogeneously in a way that the overall perception of the image colors
 will not be changed. As it is mostly the very intense colors that
 cannot be printed, color saturation and contrast will have to be
 reduced slightly. Thus the color balance of the printout will be
 correct.</P>
<P class="aufz&auml;hlung-1-western"><B>Perception Photo</B>
<!--span style=&quot;font-weight: normal&quot;-->
 &ndash;<B></B>
<!--span style=&quot;font-weight: normal&quot;-->
 optimized for photographs</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
The color reproduction is
 optimized for digital photos. Contrast and color saturation are reduced
 as little as possible to achieve vivid and brilliant colors. As a
 consequence some details may be lost in very dark or very saturated
 parts of the image.</P>
<P class="aufz&auml;hlung-1-western"><B>Perception Inksave -</B>
 optimized for low ink consumption</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
Color reproduction is also
 optimized for digital photos, but some additional steps taken to reduce
 ink consumption. Ink consumption is decreased only to a certain extent
 to keep the image quality as high as possible. Additionally all colors
 are reproduced a bit &ldquo;cooler&rdquo; to save yellow ink and very intense
 colors are printed a bit less saturated.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
With this setting you save on
 average about 20%-35% of ink without a noticeable loss in print
 quality. (even in comparison with the original printer driver of the
 printer manufacturer).</P>
<P class="aufz&auml;hlung-1-western"><B>Saturation</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
The color reproduction is
 optimized for diagrams and charts but not suitable for digital images.
 The printer driver tries to achieve very luminous colors.</P>
<P class="aufz&auml;hlung-1-western"><B>Colorimetric Absolute</B>
<!--span style=&quot;font-weight: normal&quot;-->
 (TurboPrint Studio only)</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
This setting is designed
 especially for printing CMYK documents in prepress production. All
 colors that can be printed will be reproduced exactly. However colors
 that cannot be printed must be reduced in saturation. Depending on the
 paper used, details could be lost - especially in darker or very
 luminous parts of the image.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">When printing standard
 RGB documents with this intent, only a small part of the colors can be
 reproduced exactly (RGB color spaces are bigger than CMYK spaces and
 especially many dark colors cannot be reproduced exactly). Thus this
 intent is not useful for printing RGB documents; RGB pictures appear
 too dark in this mode.</P>
<P class="aufz&auml;hlung-1-western"><B>Colorimetric Relative</B>
 (TurboPrint Studio only)</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">Same as 
above but in addition the white
 point of the document is adapted to the white point of the chosen
 paper. This intent should be used when printing with the &bdquo;CMYK-Proof&ldquo;
 mode (see below).</P>
<P class="aufz&auml;hlung-1-western"><B>No Correction</B> (for printing
 color charts)</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
Color management is switched off,
 printed colors will not match document colors. This setting should only
 be chosen to print a profile chart when creating an ICC profile.
</P>
<H5 class="western">Color Mode</H5>
<P class="western">
Specifies whether the printout is done in grayscale or in color. You can
 choose between the following options:</P>
<P class="aufz&auml;hlung-1-western"><B>Grayscale</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
For printing grayscale documents
 with photos use this setting as the dithering quality is better than in
 the &ldquo;grayscale fast&rdquo; mode. Only black ink is used. The calculation of
 print jobs takes longer than in the &rdquo;fast&rdquo; grayscale mode.
</P>
<P class="aufz&auml;hlung-1-western"><B>Grayscale Fast</B> &ndash; default
 setting for B/W printers</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">This mode produces fast
 printouts without colors at a medium dithering 
quality. Use this mode with fast
 printers when printing larger documents.</P>
<P class="aufz&auml;hlung-1-western"><B>Gray Photo</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">Recommended setting for
 high-quality black &amp; white photos. Brighter shades of gray are printed
 by mixing primary colors, thus looking less grainy. On some printers
 also grey photo ink is used. This is the only &bdquo;Gray&ldquo; mode where &ldquo;Color / Grey
 Tone&rdquo; settings take effect (e.g. to achieve a sepia color balance).
</P>
<P class="aufz&auml;hlung-1-western"><B>Color - RGB &ndash; default setting
 for color printers</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">This is the correct
 setting for printing most documents or photos in color. TurboPrint
 assumes that the colors of your document belong to an RGB color space
 (which you can specify with the &ldquo;Color Space&rdquo; control).</P>
<P class="aufz&auml;hlung-1-fortsetzung-western"><B>Note for
 professionals:</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">Documents that are
 already separated into the four standard colors &ldquo;CMYK&rdquo; for pre-press
 must be printed in &ldquo;CMYK Proof&rdquo; mode described below. This ensures that
 the colors will be processed correctly. TurboPrint cannot detect the
 color mode (CMYK or RGB) automatically. If you get major color 
deviations the reason may be that
 RGB mode was used with CMYK data.</P>
<P class="aufz&auml;hlung-1-western">

</P>
<P class="western"><B>Special color modes of &bdquo;TurboPrint Studio&ldquo;</B></P>
<P class="western">TurboPrint Studio offers two additional color modes
 for printing &bdquo;proofs&ldquo; in prepress production. These color modes are
 designed especially for printing PDF- and Postscript documents based on
 the CMYK color model.</P>
<P class="aufz&auml;hlung-1-western"><B>CMYK Proof</B>
<!--span style=&quot;font-weight: normal&quot;-->
 &ndash; only TurboPrint Studio</P>
<P class="aufz&auml;hlung-1-western"><B>CMYK Proof (Mix Black)</B>
<!--span style=&quot;font-weight: normal&quot;-->
 &ndash; only TurboPrint Studio</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
In &ldquo;CMYK Proof&rdquo; mode the black
 (&ldquo;K&rdquo;) color channel of the document is printed using black ink. Thus
 colors can reproduced more exactly.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
In &ldquo;CMYK Proof (Mix Black)&rdquo; mode
 lighter shades of gray are printed by 
mixing primay colors. Thus shades
 of gray are looking less grainy.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
When using CMYK color mode specify
 the CMYK color space with the &quot;Color Space&quot; control. TurboPrint cannot
 detect the color mode automatically.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
<B>Hint</B>
: If you get major color
 deviations, the reason may be that inappropriately CMYK-Proof mode was
 used with RGB data.</P>
<H5 class="western"><B>Color Space</B>
<!--span style=&quot;font-weight: normal&quot;-->
 (color profile of document)</H5>
<P class="western">(only TurboPrint Pro and TurboPrint Studio)</P>
<P class="western">
This control specifies how the colors of a document will be interpreted.
 There exist different RGB and CMYK color spaces. Thus, to correctly
 interpret RGB or CMYK values TurboPrint needs to know to which color
 space they belong. There are different RGB and CMYK color models as
 they are referring to certain displays (RGB) or press colors (CMYK).
</P>
<P class="western" style="margin-bottom: 0cm">
The following color models are
 available in TurboPrint &ndash; additional profiles can be added with the
 TurboPrint Toolbox:</P>
<H5 class="western">RGB-Profiles</H5>
<P class="aufz&auml;hlung-1-western"><B>sRGB (default setting for mode
 &ldquo;Color&rdquo;)</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">This is the most common
 RGB color space for digital photos on PCs and for 
digital cameras. (Gamma value
 approx. 2.2)</P>
<P class="aufz&auml;hlung-1-western"><B> Apple RGB</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">This color space is
 used with most Apple Macintosh computer displays. 
(Gamma value approx. 1.8 -&gt;
 Pictures will be printed brighter than with sRGB)</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
If your documents are printed too
 dark with &ldquo;sRGB&rdquo; choose &ldquo;AppleRGB&rdquo;.</P>
<P class="aufz&auml;hlung-1-western">

</P>
<P class="western" style="margin-bottom: 0cm">The following RGB color
 spaces are less common and should only be selected if your document is
 actually referring to the respective RGB color space.</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<P class="aufz&auml;hlung-1-western"><B> CIE RGB</B></P>
<P class="aufz&auml;hlung-1-western"><B> NTSC1953</B> &ndash; RGB standard of
 the US television system</P>
<P class="aufz&auml;hlung-1-western"><B> PAL</B> &ndash; RGB standard of the
 European PAL TV system</P>
<P class="aufz&auml;hlung-1-western"><B> SMPTE-C</B></P>
<P class="aufz&auml;hlung-1-western"><B> WIDE RGB</B></P>
<P class="western" style="margin-bottom: 0cm; font-weight: normal">
<!--span lang=&quot;en-US&quot;-->
Additional RGB color spaces can be added with the color profile
 administration menu by loading the appropriate ICC color profile (see
 chapter &quot;<A class="western" href="10-.html#10.&quot;Profiles&quot;  - color profile administration|outline">
10. Profiles - color profile administration</A>&ldquo;.</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<H5 class="western">CMYK-profiles</H5>
<P class="western">(only TurboPrint Studio &ndash; available when printing
 documents in CMYK color mode)</P>
<P class="western">The first three profiles are &bdquo;generic&ldquo; profiles,
 which approximately reproduce the colors of printing presses of the
 corresponding region.</P>
<P class="western">Additional ICC-profiles can be added with the color
 profile administration (e.g. a color profile provided by a printing
 house)</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<P class="aufz&auml;hlung-1-western"><B>EURO</B> (default setting in
 color mode &bdquo;CMYK Proof&ldquo;)</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">color space compatible
 to the European standard for offset printing</P>
<P class="aufz&auml;hlung-1-western"><B>USA</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
color space compatible to the
 American standard for offset printing</P>
<P class="aufz&auml;hlung-1-western"><B>JAPAN</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">
color space compatible to the
 Japanese standard for offset printing</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">

</P>
<P class="aufz&auml;hlung-1-western"><B>ISO Coated v2 (ECI)</B></P>
<P class="aufz&auml;hlung-1-fortsetzung-western">European standard
 profile for offset printing - included with the kind permission of ECI,
 the European Color Initiative. The most current version and additional
 profiles are available on the web site 
www.eci.org.</P>
<P class="aufz&auml;hlung-1-fortsetzung-western">This profile is a
 common standard in offset printing.</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<H5 class="western">Reference Light</H5>
<P class="western">(only TurboPrint Pro / TurboPrint
 Studio)</P>
<P class="western">Choose for which illumination the colors of your
 printouts shall be optimized.</P>
<P class="western" style="margin-left: 1.25cm">T<B>echnical background:</B>
</P>
<P class="western" style="margin-left: 1.25cm">Colors look different
 when illuminated with different lighting, an effect that is also known
 as color metamerism. The red colors of a photo look more intense when
 viewed in artificial lighting (e.g. a desk lamp) than when viewed in
 daylight. That&rsquo;s why a photo may look correct in artificial light but
 pale when viewed in daylight - or vice versa, a picture that looks good
 in daylight may look reddish when viewed with a desk lamp. The
 intensity of this effect depends very much on the ink and is therefore
 not relevant for some printers.</P>
<P class="western" style="margin-left: 1.25cm">This is also important
 for prepress simulation (proofing). Printouts with different printer
 models (and hence with different inks) can be nearly identical only at
 a certain type of illumination.</P>
<P class="western">

</P>
<P class="western">The illumination is specified by the color
 temperature. The settings range between D50 (good artificial light) and
 D80 (bluish daylight). The average daylight corresponds to D65.</P>
<P class="western">Light with 5000K color temperature (D50) is the
 reference illumination for pre-press.</P>
<P class="western">When printing digital photos better results are
 normally achieved with reference lighting set to D65 to D80 (warmer
 skin colors, prevention of blue color tones turning purple).</P>
<P class="western">With ICC color profiles only measurement data for D50
 light are available. If a different illumination is chosen an
 approximation will be used (chromatic adaption formula).</P>
<H5 class="western">Color Saturation</H5>
<P class="western">
Change the color intensity with this slider:</P>
<P class="western">Higher intensity =&gt; more vivid colors</P>
<P class="western">lower intensity =&gt; less vivid colors</P>
<P class="western" style="margin-bottom: 0cm">This setting is not
 effective with the rendering intents &ldquo;Colorimetric Absolute&rdquo; and</P>
<P class="western" style="margin-bottom: 0cm">&ldquo;Colorimetric Relative&rdquo; as
 these intents exclude any color space modification.</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<H5 class="western">Color / Grey Tone</H5>
<P class="western">Use this control to change the color or gray balance.
 This setting relates to the CIELab color system which describes a color by three
 components:</P>
<P class="western"><B>L</B>
 = Brightness: 0 = black &hellip; 100 =
 white</P>
<P class="western"><B>A</B>
 = color component 1: negative =
 green, positive = red</P>
<P class="western"><B>B</B>
 = color component 2: negative =
 blue, positive = yellow</P>
<P class="western">With the slider &bdquo;A&ldquo; the color balance can be turned
 more greenish (negative values) or more reddish (positive values).
 Comparably the slider &bdquo;B&ldquo; turns the color tuning more bluish (negative
 values) or yellowish (positive values).</P>
<P class="western">The &ldquo;Color/Grey Tone&rdquo; setting is disabled when
 printing with the rendering intents &ldquo;Colorimetric Absolute&rdquo; or
 &ldquo;Colorimetric Relative&rdquo;.</P>
<P class="western">

</P>
<P class="western" style="margin-left: 1.25cm; margin-bottom: 0cm"><B>
Note:</B></P>
<P class="western" style="margin-left: 1.25cm">Tuning the color balance
 slightly bluish (e.g. B = -5) does not only comply with our viewing
 habits (e.g. most types of paper have bluish optical brighteners) but
 as a side effect also reduces ink consumption (yellow is the color
 consumed most when printing photos). This may be a reason why many
 manufacturer's printer drivers print slightly bluish.</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<P class="western" style="margin-bottom: 0cm">
</P>
<HR NOSHADE>
<A HREF="index.html">Contents</A>
<A HREF="8-2.html">Previous</A>
<A HREF="8-4.html">Next</A>
</BODY>
</HTML>
bos / turboprint deb

Products

About

Resources

Contact Gemfury
