A digital photo printer produces hard copy(permanent graphics) of documents stored in electronic form, usually on physical print media such as  paper transparencies. You can choose a photo printer with a media slot that accepts the same kind of memory card your camera uses, or a printer that connects directly, via a proprietary cable, to your camera. Then you can print photos directly from your camera without using a computer. If you do prefer to use your computer though, simply connect it to your printer via a USB, drop the photos onto your hard drive, edit them as needed, and print them from there.

The two main kinds of technology you'll see in photo printers are dye sublimation and Inkjet. Both can produce stunning images, but there are some key differences between them.

Dye sublimation printers use heat to vaporize and deposit solid dyes onto the surface of a sheet of glossy photo paper. These dyes permeate the paper's surface, creating smooth, lifelike gradations of color before returning to a solid form. The printer then applies a special coating to the paper to protect your photos from fading and provide resistance to moisture and fingerprints.

Inkjet printers, on the other hand, "paint" the image onto photo paper with a series of tiny dots using ink from a number of small cartridges. These printers remain popular because of their relatively inexpensive supplies and ability to print photos in a wider variety of sizes than most dye sublimation models.

Features:
Portability.
Editing capabilities.
PictBridge direct printing.
Cost of paper and ink.
Printing speed.

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