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Article: Japanese Inventors Develop Ink Jet Recording Apparatus Ink Cartridge
- Article from:
- US Fed News Service, Including US State News
- Article date:
- March 15, 2007
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ALEXANDRIA, Va., March 15 -- Minoru Usui and Hisashi Miyazawa, both of Nagano, Japan, have developed an ink cartridge for ink jet recording apparatus, a connection unit and an ink jet recording apparatus.
According to the U.S. Patent & Trademark Office: "An ink cartridge for supplying the ink in an ink reserving chamber via an ink supply port into a recording head has a differential pressure valve mechanism disposed between an ink flow port and the ink supply port in the ink reserving chamber, whereby the ink is supplied an adequate amount to the recording head by opening or closing the differential pressure valve mechanism in accordance with an ink pressure of the recording head. As a ...