Printer

I had the saqme problem. seems like one of the developer rollers (which is part of the drum unit) was shot. maybe you can get the drum unit replaced under warranty.

have you tried changing the drum? The drums are the parts that aply the toner to the paper sheet. In some printers the drums are included in the toner cartridge but in other cases they aren't... You can also clean the old one with alcohol, in this case remove it from the printer and clean it outside and only put it back when it is completely dry!