Process for the production of a liquid jet recording head

Details Process for the production of a liquid jet recording head Process for the production of a liquid jet recording head

1997-01-10

1999-11-09

Achutamurthy, Ponnathapura

Incremental printing of symbolic information

Ink jet

Ejector mechanism

427555, 216 27, B41J 2015, B05D 300

Patent

active

059800178

ABSTRACT:
A process for producing a liquid jet recording head, comprising the steps of: providing a substrate for a liquid jet recording head, which is provided with a heat generating resistor; forming a thermoplastic resin layer capable of being solubilized on the substrate; subjecting the thermoplastic resin layer on the substrate to patterning treatment to form an ink pathway pattern in a state that the heat generating resistor is positioned at the bottom of the ink pathway pattern while being covered by the ink pathway pattern; subjecting the ink pathway pattern to heat treatment at a higher temperature than the melting point of the thermoplastic resin layer constituting the ink pathway pattern to round corners of the ink pathway pattern into a rounded ink pathway pattern; forming a resin coat layer on the substrate having the rounded ink pathway pattern thereon; forming an ink discharge outlet at a portion of the resin coat layer which is situated right above the heat generating resistor; and eluting the rounded ink pathway pattern constituted by the thermoplastic resin material layer to form an ink pathway in communication with the ink discharge outlet.

REFERENCES:
patent: 4657631 (1987-04-01), Noguchi
patent: 5478606 (1995-12-01), Ohkuma et al.

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