Ink jet recording head

Details Ink jet recording head Ink jet recording head

B - Operations, Transporting

41

J

B41J 2/045 (2006.01) B41J 2/14 (2006.01) B41J 2/16 (2006.01) B41J 2/165 (2006.01) B41J 2/175 (2006.01)

Patent

CA 2060047

ABSTRACT An ink jet recording head in which a plurality of ink nozzles are juxtaposed on a single silicon substrate to provide a Kaiser on-demand type ink jet recording head. The ink flow paths are formed in a surface of the substrate by dry plasma etching and a glass plate is electrostatically bonded onto that surface as a vibrating plate. The surfaces of the ink flow paths are cleaned using an alkali solution, and a water repelling film is formed around the ink jetting outlets. Notch portions, each having a sectional area larger than the ink nozzle, may also be formed on the end surface between adjacent ink jetting outlets. A heater may also be positioned on a surface of the substrate on which the ink nozzles are arranged. In addition, a releasable cartridge accommodating both the recording head and an ink tank for supplying the ink in a single container may be formed and a cap may be provided at a front portion of the cartridge, the cap being capable of covering the ink jetting outlets by rotation. - 30 -

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