Color printer

I’m totally new here, so ‘Hi!’. I may also be posting in the wrong sport, so feel free to tell me I’m lost a point me in the right direction.
Several months ago, I wandered into a page that discussed using an Arduino to change the color cartridge assignment on a printer. I.e. Telling the printer that the Magenta is actually a White cartridge. Anyone have any info on this, where I can get started etc?

Txboyinga:
change the color cartridge assignment on a printer. I.e. Telling the printer that the Magenta is actually a White cartridge. Anyone have any info on this, where I can get started etc?

That is likely going to be specific to one brand of printer, and possibly one style of cartridge.
My understanding is that a color printer typically recognizes cartridges based on which slot they are in and verifies their color is right for the slot by checking the ROM chip on the cartridge.
What is a "white" printer cartridge and in what way do you want the printer to act differently by telling it that a Magenta cartridge is actually White?

Probably easier(less hard) to solve through the printer drivers.

Fill your magenta cartridge with white ink (which is what I suppose you're trying to do), and have the drivers correct for that colour change.

johnwasser:
That is likely going to be specific to one brand of printer, and possibly one style of cartridge.
My understanding is that a color printer typically recognizes cartridges based on which slot they are in and verifies their color is right for the slot by checking the ROM chip on the cartridge.
What is a “white” printer cartridge and in what way do you want the printer to act differently by telling it that a Magenta cartridge is actually White?

I turning an Epson XP-15000 into a DTG printer. It’s a 6 color system, and I want to drop Gray in favor of White so that the machine can be used on black garments. I just have to get the printer to realize that it has that cartridge.

wvmarle:
Probably easier(less hard) to solve through the printer drivers.

Fill your magenta cartridge with white ink (which is what I suppose you're trying to do), and have the drivers correct for that colour change.

When you say the drivers, are you saying to re-write the drivers?

Txboyinga:
When you say the drivers, are you saying to re-write the drivers?

Pretty much. Unless you can find the source and adapt that.

I do assume it's in the drivers where the amount of ink and the cartridge it has to come from is calculated, with the printer just following those commands.