Hmm, usually you see faded output as opposed to dark bands. Could be the drum is getting old. How old is the toner cartridge? The LaserJet 5 series was pretty popular, you should be able to find toner in many of the larger computer stores (fry's, Best Buy etc). They are not cheap, but they last a long time. The last one cost me about $70. You may be able to find a refill or other type of replacement on the web.