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Bug 154440 - HPLIP black color support
HPLIP black color support
Product: Fedora
Classification: Fedora
Component: ghostscript (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Tim Waugh
Mike McLean
: FutureFeature
Depends On:
Blocks: FC5Target
  Show dependency treegraph
Reported: 2005-04-11 14:03 EDT by Mario Fetka
Modified: 2007-11-30 17:11 EST (History)
0 users

See Also:
Fixed In Version: 8.15-0.rc3.7
Doc Type: Enhancement
Doc Text:
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Last Closed: 2005-08-11 06:46:36 EDT
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Description Mario Fetka 2005-04-11 14:03:20 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.4; Linux) KHTML/3.4.0 (like Gecko)

Description of problem:
it would be great for all users with hp printer if we could add a patch to   
ghostscript gdevijs to support krgb:  
 Added KRGB support. HPIJS now supports two color spaces RGB and KRGB. KRGB   
provides image enhanced printing for black text and black line drawings which   
can not be done with current RGB based raster drivers.   
KRGB definition:   
1. K=1-bit black plane, RGB=24 bit color raster.   
2. K-plane will only contain objects that are black text and black line   
3. RGB raster will not contain K-plane objects.   
4. K resolution and RGB resolution will be equal.   
5. K-plane will be byte aligned.   
6. K-plane bit definition; 1=black, 0=white.   
KRGB requires Ghostscript suppport. Current versions of Ghostscript do not   
support KRGB. In order to support KRGB, a Ghostscript KRGB patch is included   
in the HPIJS package. The patch modifies the IJS client in Ghostscript and is   
free to use under the MIT license. The new IJS client should be backward   
compatible with existing IJS servers. This means KRGB support is optional.   
Use the following command in the Ghostscript source directory to apply the   
KRGB patch, then rebuild Ghostscript.   
$ patch -p0 < gdevijs-krgb-1.0.patch  

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Comment 1 Tim Waugh 2005-08-11 06:46:36 EDT
This patch is already incorporated into ESP gs 8.15rc3.

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