Ink jet recording head and method of manufacturing same
AssigneeCanon Kabushiki Kaisha
InventorIsao Imamura
Life of this patent
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Abstract
Provided is an ink jet recording head having a flow path member. The flow path member is made of a thermoset product of a thermosetting molding composition containing a solid epoxy resin composition containing an epoxy resin and a phenolic resin, each solid at ordinary temperatures, and an alumina filler.
Claims18
An ink jet recording head having a flow path member made of a thermoset product of a thermosetting molding material comprising a solid epoxy resin composition containing an epoxy resin which is solid at ordinary temperatures and a phenolic resin which is solid at ordinary temperatures and an alumina filler,
- wherein the epoxy resin and the phenolic resin are each a polyfunctional resin, and
- wherein a molar ratio of an epoxy group of the epoxy resin to a phenolic hydroxyl group of the phenolic resin is from 1.0:0.7 to 1.0:0.98.
An ink jet recording head having a flow path member made of a thermoset product of a thermosetting molding material comprising a solid epoxy resin composition containing an epoxy resin which is solid at ordinary temperatures and a phenolic resin which is solid at ordinary temperatures and an alumina filler,
- wherein the epoxy resin and the phenolic resin each have a melting temperature of 50° C. or more, and
- wherein a molar ratio of an epoxy group of the epoxy resin to a phenolic hydroxyl group of the phenolic resin is from 1.0:0.7 to 1.0:0.98.
A method of manufacturing an ink jet recording head having a flow path member, the method comprising forming the flow path member by injection molding a thermosetting molding material containing a solid epoxy resin composition containing an epoxy resin which is solid at ordinary temperatures and a phenolic resin which is solid at ordinary temperatures and an alumina filler.
Dependencies are inferred from the claim text.