[Openicc] Gutenprint, GhostScript, Canned profiles, sRGB workflow
Jan-Peter Homann
homann at colormanagement.de
Fri Mar 4 02:28:50 PST 2011
Hello all,
I want to describe a concept for implementing an ICC based print color
workflow for office / sRGB community step by step.
Please take in consideration, that we have alreay applications like
Photoprint, which are offering individual profiling of the printing
patch for color aware photo community.
Starting with very focused solution for the sRGB office market, allows
us to reduce the UI and all the configurations needed for implementing a
first working version. For shure, future versions should have more
option to support both the needs of sRGB office and more advanced use cases.
1) General description of the concept:
Target user cases are all applications which are generating
RGB-PostScript or DeviceRGB-PDF. This includes e.g. all kinds off office
applications
Technically:
- Focused on canned profiles
- Focused on cupsGutenprint as printer driver
- Focused on GhostScript as xxxtoraster
- Using cupsICC
- using a static PPD for describingt he connection between driver
settings and ICC profiles
- The "no colormanagement printing path" will be installed in a future
version
The Gutenprint Part:
- Create for a reference printer, driver settings with ICC profiles for
every setting
- The driver settings and ICC profiles are organized by Mediatype and
resolution
- Create a PPD, where the driver settings are exposed only through the
MediaType and Resolution only according cupsICC specification
- Make shure, that every combination of mediatype and Resolution offered
through the PPD directs to a defined setting with ICC profile
- provide an simple installer for both the driver incl. settings, the
PPD and the ICC profiles incl. path
The GhostScript Part:
- Define a way, that the profile from cupsICC is used as target profile
in GhostScript
- Deliver an installer for enabling this possibilty
The enduser experience should be as following;
- Install driver, ICC-profiles and PPD
- Install GhostScript tools, for catching cupsICC profile
- Print with the options offered through the PPD and be happy with the
result
2) Looking forward to the "No Colormanagement Print Path"
Gutenprint is a real CMYK printer driver and needs CMYK charts to be
profiles. The standard print spool files are RGB PostScript or RGB PDF.
Offering the "No Colormanagement Option" for the standard printing path
makes no sense. As the "No Colormanagement Option" is only needed for
printing profiling charts, it would make sense to offer an utility,
which can print the profilinfing chart directly with a given setting to
Gutenprint (without the nned of GhostScript...) and a second utility to
update the PPD files and install ICC-profiles for the updated PPD file.
Best regards
Jan-Peter
--
---------- Please note the new adress --------------
homann colormanagement --------- fon +49 30 611 075 18
Jan-Peter Homann ------------ mobile +49 171 54 70 358
Cotheniusstr. 3 -------- http://www.colormanagement.de
10407 Berlin -------- mailto:homann at colormanagement.de
More information about the openicc
mailing list