Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Daisuke Sawaki0
Fumio Takagi0
Ryuichi Kurosawa0
Date of Patent
July 10, 2007
0Patent Application Number
108276170
Date Filed
April 19, 2004
0Patent Primary Examiner
Patent abstract
A liquid dispense head is provided which can be manufactured at a reduced manufacturing cost, will not react with dispense liquid containing biomolecules, and can dispense liquid droplets having a constant amount from individual nozzles. The liquid dispense head has reservoirs used as reservoirs for containing liquid, pressure chambers for applying a pressure to dispense the liquid, flow passages connecting the pressure chambers and the respective reservoirs. In the liquid dispense head described above, a part of the flow passage is formed of a minute through-hole provided in a glass substrate, and the inside diameter of the minute through-hole is continuously decreased or increased.
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