Article: Japanese Inventor Develops Ink Cartridge for Color Printer

ALEXANDRIA, Va., June 3 -- Kanae Amemiya of Tokyo has developed a color printer ink cartridge.

According to the U.S. Patent & Trademark Office: "An ink cartridge used in a color printer, comprises at the surface, a convexity or convexities (identifying section) that correspond to a color of an ink, and that can be identified by tactile sense. A cartridge setting section of the color printer comprises at the surface, a convexity or convexities (identifying section) that correspond to the color of the ink of the ink cartridge that is to be set, and that can be identified by tactile sense. The user can identify the color of the ink of the ink cartridge, by touching the ink cartridge with ...

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