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Most people agree that an inkjet photo printer can produce excellent photo-quality prints. But there's been some controversy over the two types of ink used in these printers.
Inkjet inks come in two basic types: dye-based and pigment based. Pigment-based inks tend to last longer than dye-based (though dye-based inks have improved significantly in recent years). And pigment-based inks aren't affected as easily by humidity – a long-term consideration.
But dye-based inks produce a less grainy, smoother finish, which is definitely preferable to most photographers. For pure looks, pigment-based inks can't match them.
In the end, the decision is up to you. If longevity is paramount, you may want to select a printer that uses pigment-based inks. But if photo-realistic quality is your prime concern, a printer that uses dye-based inks may be more appropriate.