Legacy ImageMagick Discussions Archive

I have not made it work successfully. I came close doing it in Photoshop but the printer driver always converts the CMYK to RGB and it messes up the cyan. The driver does not assign the remapped CMYK data to remapped printer channels. I don't know how to force the driver to keep the CMYK format ...

The order I am looking for is KMYC. Prior to that conversion convert the CMYK or RGB input file's black to C=100% M=100% and Y=100%. Is that possible?

The problem with that is K toner/drum set is the first set and C toner/drum set is last toner. The K channel data will be printed first instead of flooding the CMY color with K toner which is physically white toner in K cartridge. By swapping the C and K toner/drum set and matching swapped C and K ...

The output file New_Draconian_cmyw.jpg using your code is CMYK but the C and K are not swapped which cannot be used as CMYW. The CMY color can be viewed in Photoshop by hiding the K channel .The Photoshop_Draconian_cmyw.jpg is a CMYK that was modified by swapping C and K channels to work as CMYW ...

Here is the link to the description and detail about what I call CMYW file: https://www.dropbox.com/sh/66u3qyhzv9td ... EqQ2a?dl=0

The Photoshop_Draconian_cmyw.jpg in the link below is the closest I can come close because the black and shade of gray were not converted to composite CMY black and gray.

https://www.dropbox.com/sh/66u3qyhzv9td ... EqQ2a?dl=0

@Ghad,

Did you figure it out?

Luis

Here is the link to the Description and folder with original file, your codes output and the modified output in photoshop. https://www.dropbox.com/s/qv5twzjvkdstm98/Description%20of%20files.pdf?dl=0 Link to Folder of original and output files: https://www.dropbox.com/sh/66u3qyhzv9tdlrg/AADcZJHult ...

BTW I can swap C and K channels by doing the following: 1) Create workpath and save it 2) Convert RGB to CMYK 3) Duplicate C channel 4) Delete the original C channel. Photoshop flattens the image and converts it to Multi channel mode 5) Use the path as selection 6) Hide CMY 7) Fill the selection ...

OK I will try a CMYK image. I will post the output after conversion.

I tried it but I am getting "-iclone no such image" error when I used smile.jpg for image. When I changed "-clone 3" to "-clone 2" i don't get the error. When I opened it in Photoshop the C and K channels were not swapped.

@snibgo and @fmw42, I was wondering if you have come up with solution? I was wondering myself if ImageMagick is the way to go. There is a Rip called Icolor TransferRip. http://www.uninetimaging.com/downloads/technical/TecArtWebAdded/UniNet_iColor_Produce_White_Underprint_ENG.pdf The Rip uses a CMYK ...