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).
Claims51
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.
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,
- wherein the ink passage further comprises at least one nozzle communicating port, and
- wherein the reinforcement surrounds at least one nozzle communicating port,
- wherein the ink passage is constituted by the common ink chamber, an ink supply port, the pressure chamber and the at least one nozzle communicating port.
Dependencies are inferred from the claim text.