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Patent US4417251A successfully refreshed from Google Patents.
US4417251A
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Ink jet head
Assignee: Canon Inc
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Filing: 1981-02-26
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Granted: 1983-11-22
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Expires: 2001-02-26
Abstract
Abstract Ink jet head and method for manufacturing the same, wherein a groove or grooves to constitute ink flow path are formed in a layer of a photosensitive composition placed on one surface of a substrate.
Inventors
- 👤 Hiroshi Sugitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/135; B41J2/16; B41J2/1621; B41J2/164; B41J2/1645; B41J2/1601; B41J2/1604; B41J2/1623; B41J2/1626; B41J2/1629; B41J2/1631; B41J2/1632; B41J2202/00; B41J2202/01; B41J2202/03
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
49 words
An ink jet head comprising: a substrate having at least one ink flow path for producing ink droplets and having an ink discharging pressure generating element therein, said substrate being contoured to define a groove constituting said ink flow path which groove is defined in a cured photosensitive resin.
Claim 2
Dependent Claim
49 words
An ink jet head comprising: a substrate having at least one ink flow path for producing ink droplets and having an ink discharging pressure generating element therein, said substrate being contoured to define a groove constituting said ink flow path which groove is defined in a cured photosensitive resin.
Claim 3
Dependent Claim
16 words
An ink jet head according to claim 1, wherein said resin is a dry film photo-resist.
Claim 4
Dependent Claim
23 words
An ink jet head according to claim 1, wherein said resin is in a form of film having a thickness of 25-100 microns.
Claim 5
Dependent Claim
22 words
An ink jet head according to claim 1, wherein an ink discharging pressure generating element is disposed in said ink flow path.
Claim 6
Dependent Claim
21 words
An ink jet head according to claim 1, wherein said ink flow path is in communication with an ink discharging port.
Claim 7
Dependent Claim
17 words
An ink jet head according to claim 1, wherein a plurality of said ink paths are provided.
Claim 8
Dependent Claim
56 words
An ink jet head comprising: a substrate having at least one ink flow path for producing ink droplets and having an ink discharging pressure generating element therein, characterized in that substantially the entire ink flow path is formed by one and the same process with said ink flow path defined in a cured photosensitive resin film.
Claim 9
Dependent Claim
56 words
An ink jet head comprising: a substrate having at least one ink flow path for producing ink droplets and having an ink discharging pressure generating element therein, characterized in that substantially the entire ink flow path is formed by one and the same process with said ink flow path defined in a cured photosensitive resin film.
Claim 10
Dependent Claim
22 words
An ink jet head according to claim 7, wherein said ink flow path has disposed therein an ink discharging pressure generating element.
Claim 11
Dependent Claim
21 words
An ink jet head according to claim 7, wherein said ink flow path is in communication with an ink discharging port.
Claim 12
Dependent Claim
18 words
An ink jet head according to claim 7, wherein a plurality of said ink flow paths are provided.
Claim 13
Dependent Claim
19 words
An ink jet head according to claim 7, wherein said photosensitive resin film has a thickness of 25-100 microns.
Claim 14
Dependent Claim
86 words
An ink jet head having at least one ink flow path through which ink droplets are produced, said ink jet head comprising: (1) a substrate provided with an ink discharging pressure generating element; and (2) a layer overlying the substrate provided with at least one groove for the ink flow path, said ink jet head being prepared by forming a photosensitive resin layer on the substrate, curing said layer for form cured regions according to a predetermined pattern and removing the uncured resin from said layer.
Claim 15
Dependent Claim
86 words
An ink jet head having at least one ink flow path through which ink droplets are produced, said ink jet head comprising: (1) a substrate provided with an ink discharging pressure generating element; and (2) a layer overlying the substrate provided with at least one groove for the ink flow path, said ink jet head being prepared by forming a photosensitive resin layer on the substrate, curing said layer for form cured regions according to a predetermined pattern and removing the uncured resin from said layer.
Claim 16
Dependent Claim
16 words
An ink jet head according to claim 12, wherein said resin is a dry film photo-resist.
Claim 17
Dependent Claim
23 words
An ink jet head according to claim 12, wherein said resin is in a form of film having a thickness of 25-100 microns.
Claim 18
Dependent Claim
22 words
An ink jet head according to claim 12, wherein said ink flow path has disposed therein an ink discharging pressure generating element.
Claim 19
Dependent Claim
21 words
An ink jet head according to claim 12, wherein said ink flow path is in communication with an ink discharging port.
Claim 20
Dependent Claim
18 words
An ink jet head according to claim 12, wherein a plurality of said ink flow paths are provided.
Claim 21
Independent Claim
73 words
A method for manufacturing an ink jet head having at least one ink flow path through which ink droplets are produced which comprises: forming a photosensitive resin layer on a substrate provided with an ink discharging pressure generating element therein, producing cured regions in said layer according to a predetermined pattern, and removing uncured resin from said layer to produce a groove in the surface of the substrate constituting said ink flow path.
Claim 22
Independent Claim
73 words
A method for manufacturing an ink jet head having at least one ink flow path through which ink droplets are produced which comprises: forming a photosensitive resin layer on a substrate provided with an ink discharging pressure generating element therein, producing cured regions in said layer according to a predetermined pattern, and removing uncured resin from said layer to produce a groove in the surface of the substrate constituting said ink flow path.
Claim 23
Dependent Claim
16 words
A method as set forth in claim 18, wherein said resin is a dry film photo-resist.
Claim 24
Dependent Claim
22 words
A method as set forth in claim 18, wherein said resin is in a form of film having thickness of 25-100 microns.
Claim 25
Dependent Claim
22 words
A method as set forth in claim 18, wherein said ink flow path has disposed therein an ink discharging pressure generating element.
Claim 26
Dependent Claim
21 words
A method as set forth in claim 18, wherein said ink flow path is in communication with an ink discharging port.
Claim 27
Dependent Claim
18 words
A method as set forth in claim 18, wherein a plurality of said ink flow paths are provided.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |