Ink jet type recording head
AssigneeSeiko Epson Corporation
InventorTsuyoshi Kitahara
Life of this patent
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Abstract
A nozzle plate (8) having a nozzle opening (10) formed thereon, a passage forming substrate (70) having a pressure chamber (12), an ink supply port (13) and a common ink chamber (11) formed sequentially to communicate with the nozzle opening (10), and a vibrating plate (9) for being deformed to pressurize the pressure chamber (12) are provided and laminated to constitute a passage unit (30). The passage forming substrate (70) is fabricated by an insert molding using a reinforcing plate (72) as a core and a portion to be an ink passage is partitioned and formed by a resin (71).
Claims30
An ink jet type recording head comprising:
- a passage unit including a passage forming substrate provided with a serial ink passage communicating with a nozzle opening from a common ink chamber through a pressure chamber;
- and
- a pressure generating element for varying pressure within the pressure chamber,
- wherein the passage forming substrate is formed by an integral molding using a resin for partitioning the ink passage and a reinforcement as a core of the passage forming substrate.
A method of manufacturing an ink jet type recording head which includes a passage unit having a passage forming substrate provided with a ink passage, the method comprising the step of:
- molding the passage forming substrate in a resin for partitioning the ink passage and a reinforcement as a core of the passage forming substrate with using a mold.
The method of manufacturing the ink type recording head according 24, wherein the cavity has a portion formed in conformity with an external shape of a nozzle opening to integrally forming the nozzle opening with the passage form substrate.
Dependencies are inferred from the claim text.