Canon KP-108IN Ink/Paper Set

The most cost-effective paper and ink pack for the Selphy CP-series, comes down to about 27 cents per photo right now. The box contains three ink packs, each good for 36 prints, and six 18-photo-paper packs (The CP-760 can only hold 18 photos in its tray). Everything you need to print exactly 108 photos. The paper has Canon written on the back in light gray. TheCanon KP-108IP Color Ink/Paper Set(note the “IP”) has postcard back but is harder to find.These dye-sub packs print exactly the number of photos indicated, no more, no less, no matter the color coverage on the photo. The “ink” cartridge has a roll of 4-inch-wide film with 6-inch-long sections of each dye (yellow, magenta, cyan) followed by a clear coat, repeated exactly 36 times.When printing, each dye layer goes over the photo and transfers the color to the paper using heat. Sublimation is vaporizing the “ink” from the film in controlled amounts, which is then deposited onto the paper. The printer lets you see the photo at each stage which is neat. The final layer is a plastic clear coat that makes it smudge-proof and water-resistant.The result of this process is that the film inside the used ink cartridge ends up with accurate negatives of your prints in each color. That is why the cartridge can’t be reused, but that also means the photos you printed can be recovered from a discarded “empty” cartridge. If that is a problem then I suppose you can yank the film out and dispose of it some other way (not heat as it may cause the remaining dye to vaporize in the air you breathe).