I burned through 8 printers in 6 months back in 2005. I was using Canon Ink jet all-in-one printers to print borderless real estate brochures. After about 20 days of heavy use, the waste ink tank full indicator was triggered (not a customer serviceable item) and it wouldn't print. Canon replaced the printers no question, I just had to return the old printers in the packaging of the new printer with their prepaid shipping. I wasn't using Canon ink either, after the original ink cartidges were empty I'd refill them with bulk ink. Since then they have chipped the ink cartidges and will not warrantee if you didn't use Canon ink. Canon's service thoroughly impressed me. Before you ask, I was unable to find a borderless laser printer and I needed borderless ...