Patent ID: 7971358
Filing Date: 2011-07-05
Classification: B29C,B29L,B41J,Y10T

Abstract:
1. A method of manufacturing an ink jet recording head having a discharge port for discharging liquid, a liquid flow path communicated with a liquid container for containing the liquid supplied to the discharge port, a container holding member for holding the liquid container, and a flow path forming member having a permeability to a laser beam, said method comprising: preparing the container holding member and the flow path forming member, at least one of a surface of the container holding member and a surface of the flow path forming member being formed with a groove as the liquid flow path, and at least one of the surface of the container holding member and the surface of the flow path forming member being formed with a protruded portion protruding toward a vicinity of a contacting portion except the groove; contacting the container holding member and the flow path forming member in a condition that the surface of the container holding member and the surface of the flow path forming member are inside and that the container holding member is in contact with the flow path forming member in a condition that a surface of the protruded portion which is to be a portion of the liquid flow path is flush with and along an inner surface of the groove; irradiating the laser beam through the flow path forming member to a contacting portion between the container holding member and the flow path forming member in a condition that an absorbing member for absorbing the laser beam exists in the vicinity of the contacting portion.