Hi, I haven't used my

Hi, I haven't used my Canon S330 printer for some months, and when I plugged it in just now, it wouldn't print. I replaced both cartridges, and still no printing. The cartridge moves fairly quickly back and forth as if it's printing, then the printer spits out blank paper. I tried removing the cartridges and the print head and carefully cleaning the print head, without any change. Can you suggest something else?

Thanks.