Ink jet printer recording head
AssigneeSeiko Epson Corporation
InventorsMinoru Usui, Satoru Hosono
Life of this patent
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Abstract
An ink jet printer recording head in which a plurality of vibrating plates made of a piezoelectric material are fixedly spaced from a nozzle plate such that the small gap therebetween admits a portion of ink. The surface of each vibrating plate is integrally provided with a pair of positive and negative comb-type electrodes. By applying a voltage across these comb-type electrodes, the vibrating plates are bent toward the nozzles to pressure the ink and attendantly eject the ink through the nozzles in the form of ink droplets on a recording sheet.
Claims16
An ink jet printer recording head comprising two confronting members with a small gap for admitting a portion of ink therebetween, a first member of said two confronting members being provided with an ink ejecting nozzle and a second member of said two confronting members being made of a piezoelectric material to serve as an ink pressuring member, wherein at least one surface of said ink pressuring member is provided with a pair of positively and negatively polarized electrodes arranged in a longitudinal direction on a first portion of said ink pressuring member and in a transverse direction on a second portion of said ink pressuring member, such that a voltage applied across both of said electrodes deforms said ink pressuring member toward said nozzle thereby ejecting ink droplets through said nozzle.
An ink jet printer recording head comprising two confronting members with a small gap for admitting a portion of ink therebetween, a first member of said two confronting members being made of a piezoelectric material to form an ink pressuring member, wherein said first member is provided with an ink ejecting nozzle and a surface of said first member is provided with a pair of positively and negatively polarized comb-type electrodes.
Dependencies are inferred from the claim text.