Homebrew PCBs

I am about to dive back into the ink jet printing concept for etch 
resist application.  It seems as though the Magenta and Yellow inks 
are working the best for MisPro and for Epson inks.  I have an Epson 
R220 that is going to be my test machine.

Not wanting to invest in yet more ink and more refillable cartridges 
and all that stuff, I am thinking I will run over to cartridgeworld 
and have them fill up a black cartridge with either a mix of magenta 
and yellow, or one or the other if they complain.  The reason for 
doing it this way, I can bypass the problem with the printer 
complaining about the wrong "Color" in the wrong slot and get past all 
the stuff with the goofy chips on the cartridges.  My PCB layout 
software doesn't allow me to select which color to print with and I 
have not had any luck going to a PDF first, then changing the colors 
there.  

Does this all seem to make sense and seem like a reasonable direction 
to go?

I have taken the printer partially apart a while back and put it back 
to gether again.  I hope to get a bit further this weekend if time 
allows.  There is a straight through path on this printer with the 
exception of "Something" on the right rear area that I have yet to 
find out what it is.  Hopefully that thing can be moved and the 
plastic just cut away to allow for clearance to feed a full, 8 1/2" 
wide sheet of PCB material through in that area.

It also seems as though adding a heater is a good idea to allow for 
faster and better drying of the inks, so that too will be considered 
along the way.  Any suggestions for a heater that could heat the 
entire width of the PCB board and allow for temperature control?

Chris