Patent ID: 6668453
Filing Date: 2003-12-30
Classification: B29C,B29L,B41J,Y10T

Abstract:
A method for manufacturing an ink jet recording head comprising a discharging orifice for discharging an ink located in a discharge opening face, a discharge pressure generating element for generating energy for ink discharge, an ink flow path communicating with the discharging orifice and a liquid chamber communicating with the ink flow path, such that there is a liquid chamber side of the ink flow path, said method comprising:a step of preparing a first substrate provided with the discharge pressure generating element, a step of forming a removable pattern material for forming the ink flow path on the first substrate, a step of preparing a second substrate provided with an ink feed opening for feeding the ink to the ink flow path, a step of fixing the first substrate and the second substrate with the interposition of a predetermined space via the pattern material, a step of injecting a resin for forming an ink flow path wall into a space between the first substrate and the second substrate, a step of curing the resin, a step of simultaneously cutting the first substrate, the second substrate and the cured resin to divide them into individual ink jet recording heads, and a step of removing the pattern material to form the ink flow path, wherein an injection opening is arranged in the vicinity of the portion for the ink flow path of the first substrate, and the resin is injected through the injection opening toward the liquid chamber side of the ink flow path, and the injection opening is a through-hole for resin injection that is formed through the first substrate after the pattern material is formed on the first substrate.