[ubuntu] Fooling printer ink level reader--any attempts?

view full story

http://ubuntuforums.org – Inkjet sucks, buy a laserjet I know. Normally, I buy $20 printers and toss them when the ink runs out, but this time I bought ink for my roommates printer only to discover what I should have remembered--replacing the black doesn't help. All ink cartridges must have ink... This is a matter of principle at this point. Basically I want to short circuit the ink cartridge ink level reader so it thinks the cartridge is full. Anyone done this before, have some pointers? (Hardware)