[Gimp-print-devel] Move/remap an ink channel

[Larry Gebhardt]

Hi, my name is Larry Gebhardt and I'm new to the project (I have only been poking around for an afternoon). I'm trying to resurrect an Epson 7900 which has eaten the LK channel of the head. All other channels are printing correctly. I would like to get an aftermarket ink cartridge and move the LK ink into the orange channel and create a custom printer definition to use the LK from that channel and skip using the orange channels so it behaves as an 8 channel printer (like the 7890) or a 9 color printer with green (if that will work).

Is this possible? Any advice on how to accomplish this? I've been looking at pro_ultrachrome_k3v10.xml and model_116.xml and in the code but I haven't found where the subchannels are mapped to the physical channels, which I'm assuming would be a good starting place. I don't fully understand how the Epson printers interact with the printer drivers however, so maybe this is an impossible task. However the fact that drivers like Quad Tone RIP work it seems this should be possible.

Thanks,
Larry

[Solomon Peachy]

Post by Larry Gebhardt
Is this possible? Any advice on how to accomplish this? I've been
looking at pro_ultrachrome_k3v10.xml and model_116.xml and in the code
but I haven't found where the subchannels are mapped to the physical
channels, which I'm assuming would be a good starting place. I don't
fully understand how the Epson printers interact with the printer
drivers however, so maybe this is an impossible task. However the fact
that drivers like Quad Tone RIP work it seems this should be possible.

The simplest thing to try is, in the ink set xml file, swap the channel
numbers of two of the channels, then swap the ink cartidges, and see
what happens.

Oh, as for whaere to go: In the ink defintion, search for '<subchannel'.
Each subchannel is defined by a 'color' and 'subchannel' value. You
just have to exhcange that pair with some other subchannel's values.

This will only work if the printer doesn't have a way to enforce which
slot you put a cartridge into. I can't comment on that.

- Solomon