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Bug 154440

Summary: HPLIP black color support
Product: [Fedora] Fedora Reporter: Mario Fetka <mario.fetka>
Component: ghostscriptAssignee: Tim Waugh <twaugh>
Status: CLOSED RAWHIDE QA Contact: Mike McLean <mikem>
Severity: medium Docs Contact:
Priority: medium    
Version: 4Keywords: FutureFeature
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: 8.15-0.rc3.7 Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-08-11 10:46:36 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 150221    

Description Mario Fetka 2005-04-11 18:03:20 UTC
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  

Version-Release number of selected component (if applicable):

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Comment 1 Tim Waugh 2005-08-11 10:46:36 UTC
This patch is already incorporated into ESP gs 8.15rc3.