There are various print media, such as photo paper, stickers etc. These sets always seem to have cartridges in addition to the paper. Let's assume that I have processed photo paper. Now I want to print stickers. Can I do this with the same cartridge I used to print the photo paper - or do I have to change the cartridge? In the simplest case, can I just put a sticker paper on the existing photo paper stack and print the stickers?