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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Poppler incorrectly renders CMYK black color"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97103">97103</a>
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<th>Summary</th>
<td>Poppler incorrectly renders CMYK black color
</td>
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<th>Product</th>
<td>poppler
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>general
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<th>Assignee</th>
<td>poppler-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>igor.liferenko@gmail.com
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<p>
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<pre>Created <span class=""><a href="attachment.cgi?id=125362" name="attach_125362" title="in this patch we simply use "no light" for full black ink">attachment 125362</a> <a href="attachment.cgi?id=125362&action=edit" title="in this patch we simply use "no light" for full black ink">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=97103&attachment=125362'>[review]</a>
in this patch we simply use "no light" for full black ink
Hello,
If in pdf document black color is set to full black ink as CMYK(0,0,0,1), it is
displayed on monitor as RGB(35,31,32), which makes the text greyish and thus
somewhat harder to read. I checked the color by making screenshot of pdf
document and using color picker tool in GIMP. You can check this yourself by
compiling the following example by pdftex:
\pdfliteral{0 0 0 1 k}
\vrule width 1cm height 1cm
\bye
In contrast, CMYK(0,0,0,0) produces pure white color RGB(255,255,255), as it
should be.
This means that we use "full light" for no ink.
Then why we do not use "no light" for full black ink?
Please consider applying the attached patch or explain why it should not be
applied.
Regards,
Igor</pre>
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