For the information of the owners of the Canon Pro 9000 and the Canon i9900. I just replaced the print head on my i9900, it was purchased from Canon and cost around $60.00 plus shipping. On the box is a list of printers that the print head will work in. For PIXUS 9900i/9910i/i9900/i9950/iP8600/IP8500/Pro9000. My i9900 doesn't use the new CLI8 cartridges but the BCI-6 cartridges which don't have the usage chip. I'm not positive but owners of the listed printers probably can refill their cartridges without fear of the chip disabling their printer eventually.
Seeing the CLI-8 cartridges I think my statement above may be wrong, due to the fact the usage chip is on the back of the cartridge and the printers I mention may have the circuitry on the the back of the cartridge holder, sorry.
Seeing the CLI-8 cartridges I think my statement above may be wrong, due to the fact the usage chip is on the back of the cartridge and the printers I mention may have the circuitry on the the back of the cartridge holder, sorry.