Patent US5140345A successfully refreshed from Google Patents.
US5140345A
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Method of manufacturing a substrate for a liquid jet recording head and substrate manufactured by the method
Assignee: Canon Inc
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Filing: 1991-08-06
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Granted: 1992-08-18
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Expires: 2011-08-06
Abstract
Abstract A method of manufacturing a substrate is disclosed for an ink jet recording head having an electro-thermal transducer disposed on a substrate supporting member and generating heat energy available to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink. The method is characterized by the step of filling any pore created in the protective layer with a protective material. Also disclosed is a substrate for an ink jet recording head manufactured by such method, an ink jet recording head formed by the use of such substrate, and an ink jet recording apparatus having the head.
Inventors
- 👤 Hirodazu Komuro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:19
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/14; B41J2/14016; B41J2/14088; B41J2/14112; B41J2/14129; B41J2/16; B41J2/1601; B41J2/1603; B41J2/1604; B41J2/1621; B41J2/1626; B41J2/1628; B41J2/1632; B41J2/1634; B41J2/164; B41J2/1642; B41J2/1645; B41J2/1646
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
72 words
A method of manufacturing a substrate for an ink jet recording head, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the step of filling any pore created in the protective layer with a protective material.
Claim 2
Independent Claim
72 words
A method of manufacturing a substrate for an ink jet recording head, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the step of filling any pore created in the protective layer with a protective material.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein said filling step is accomplished by causing a plurality of substances for composing said protective material to react with each other in said pore.
Claim 4
Dependent Claim
27 words
A method according to claim 1, wherein said filling step is accomplished by producing a film of the protective material in the pore in the protective layer.
Claim 5
Dependent Claim
53 words
A method according to claim 1, wherein said filling step is accomplished by producing a film of the protective material in the pore in the protective layer and on the protective layer, and after producing the film, a portion of the protective material that is not in the pore is removed by etching.
Claim 6
Dependent Claim
21 words
A substrate for an ink jet recording head manufactured by a method according to any one of claims 1 to 4.
Claim 7
Independent Claim
84 words
A method of manufacturing a substrate for an ink jet recording head, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the steps of removing any foreign substance which has entered into the protective layer, and filling any pore created in said removal step with a protective material.
Claim 8
Independent Claim
84 words
A method of manufacturing a substrate for an ink jet recording head, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the steps of removing any foreign substance which has entered into the protective layer, and filling any pore created in said removal step with a protective material.
Claim 9
Independent Claim
93 words
A method of manufacturing an ink jet recording head, the head including a substrate and a member having a recessed portion for forming an ink path by bonding said member to said substrate, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the step of filling any pore created in the protective layer with a protective material.
Claim 10
Independent Claim
93 words
A method of manufacturing an ink jet recording head, the head including a substrate and a member having a recessed portion for forming an ink path by bonding said member to said substrate, the substrate having an electro-thermal transducer disposed on a substrate supporting member for generating heat energy to discharge ink, and a protective layer laminated so as to cover the electro-thermal transducer in order to protect the electro-thermal transducer from the ink, said method characterized by the step of filling any pore created in the protective layer with a protective material.
Claim 11
Dependent Claim
31 words
A method according to claim 7, wherein said filling step is accomplished by causing a plurality of substances for composing said protective material to react with each other in said pore.
Claim 12
Dependent Claim
27 words
A method according to claim 7, wherein said filling step is accomplished by producing a film of the protective material in the pore in the protective layer.
Claim 13
Dependent Claim
53 words
A method according to claim 7, wherein said filling step is accomplished by producing a film of the protective material in the pore in the protective layer and on the protective layer, and after producing the film, a portion of the protective material that is not in the pore is removed by etching.
Claim 14
Dependent Claim
18 words
An ink jet recording head manufactured by a method according to any one of claims 7 to 10.
Claim 15
Dependent Claim
41 words
An ink jet recording apparatus comprising an ink jet recording head manufactured by a method according to any one of claims 7 to 10 and a conveying means for conveying a recording medium for recording by said ink jet recording head.
References Cited (Backward Citations)
JPS5459936A
Cited
US4740796A
Cited
DE2843064A1
Cited
US4723129A
Cited
JPS5456847A
Cited
US4459600A
Cited
US4345262A
Cited
US4463359A
Cited
US4313124A
Cited
EP0032087A2
Cited
US4558333A
Cited
JPS59123670A
Cited
JPS59138461A
Cited
US4536250A
Cited
JPS6071260A
Cited
JPS60157872A
Cited
US4777494A
Cited
JPS62204952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |