I have a Canon MX870 printer which I have connected to a Windows Vista laptop via a USB connection. Whether I print or copy, the result is the same: blank pages.
The result is the same when I use a different (also Vista) computer. Scan works fine (to computer).
Printer cartridges are correctly in place (red light showing for each) and all protective orange plastic bits and tape removed: the foam part of the cartridge (underneath) is exposed and the L-shaped air hole (top) is open.
Just to be clear: it gives every impression of printing (paper goes through, it sounds like the printer heads are moving, prints only on command) but the output is blank pages.
Note: this is a brand new printer.
Update: inside the print head cradle (which you insert as part of the set up process), I can now see wet ink on the cartridge side but no wet ink on the side which touches the paper. So it looks like harrymc is correct: there is simply a hardware problem. I think I now have to take it back to the shop – if / when I know more, I will post it here.
Best Answer
First step is to ensure that you have well installed the latest driver for the printer, downloaded from the Canon Support website.
Secondly, right-click the printer's entry in the Printers applet, and select Properties. Go to the Maintenance tab and execute all the tests and maintenance functions, starting with Nozzle Check.
If this doesn't resolve your problem, the printer has a hardware problem. As it is new, use its warranty and demand repairs. If you have any problems with the shop you bought it from, contact Canon Support via their website.