“What is the difference between the 564 photo black cartridges and the black ink cartridges?”

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• HP Photo Black ink cartridges use black and gray inks to produce more accurate shades of black when printing photos or pictures. Depending on which HP printer you are using, the printer will either use the black ink cartridge only or it will use the photo black ink cartridge along with the standard black ink cartridge.

  Answered by HP Team 15 years ago

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• From what I can tell, yes, the RIGHT sided FATTER BLACK INK cartridge with the BLACK PENTAGON symbol on it is for documents. The NARROWER left sided BLACK INK cartridge has a BLACK BOW-TIE symbol along with a camera (photo) symbol on it. My black photo (skinny left side) keeps getting used up when the skinny coloreds don't. I suspect I need to adjust my gray/black scale in my print settings to make the printer punt to the RT SIDE FAT cartridge.

  Answered by notasoftwareguru 5 years ago

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• One is for printing photos the other is for printing documents.

  Answered by tdr68 10 years ago

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