US4688052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid jet recording head having a layer of a resin composition curable with an active energy ray
Assignee: Canon Inc
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Filing: 1986-07-08
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Granted: 1987-08-18
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Expires: 2006-07-08
Abstract
Abstract A light jet recording head has a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising: (i) a linear polymer having a glass transition temperature of 50° C. or higher and a weight-average molecular weight of about 3.0×10 4 or more; and (ii) an epoxy resin comprising at least one compound having two or more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid.
Inventors
- 👤 Tadayoshi Inamoto
- 👤 Hiromichi Noguchi
- 👤 Megumi Munakata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:28
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D125/00; C09D125/02; C09D125/04; C09D133/18; C09D133/20; C09D4/00; C09D4/06; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
A liquid jet recording head, having a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising: (i) a linear polymer having a glass transition temperature of 50° C. or higher and a weight-average molecular weight of about 3.0×10 4 or more; and
Claim 2
Dependent Claim
101 words
A liquid jet recording head, having a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising: (i) a linear polymer having a glass transition temperature of 50° C. or higher and a weight-average molecular weight of about 3.0×10 4 or more; and
Claim 3
Dependent Claim
34 words
(ii) an epoxy resin comprising at least one compound having two or more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid.
Claim 4
Dependent Claim
34 words
(ii) an epoxy resin comprising at least one compound having two or more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid.
Claim 5
Dependent Claim
34 words
A liquid jet recording head according to claim 1, wherein said component (ii) is a resin obtained by esterifying 0.30-0.70 equivalent, out of every equivalent of the epoxy groups present in said epoxy resin.
Claim 6
Dependent Claim
34 words
A liquid jet recording head according to claim 2, wherein said component (ii) is a resin obtained by esterifying 0.45-0.55 equivalent, out of every equivalent of the epoxy groups present in said epoxy resin.
Claim 7
Dependent Claim
42 words
A liquid jet recording head according to claim 1, wherein said resin composition contains said linear polymer (i) in an amount of 20 to 80 parts by weight and said resin (ii) in an amount of 80 to 20 parts by weight.
Claim 8
Dependent Claim
58 words
A liquid jet recording head according to claim 1, wherein said resin composition further comprises a radical polymerization initiator, to be activated by the effect of an active energy ray, in an amount of 0.1 to 20 parts by weight, with respect to 100 parts by weight in total, of said linear polymer (i) and said resin (ii).
Claim 9
Dependent Claim
62 words
A liquid jet recording head according to claim 1, wherein said resin composition further comprises a photosensitive aromatic onium salt compound containing an element of the group VIa or Va of the periodic table in an amount of 0.2 to 15 parts by weight, with respect to 100 parts by weight in total of said linear polymer (i) and said resin (ii).
Claim 10
Dependent Claim
143 words
A liquid jet recording head, having a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising: (i) a linear polymer having a glass transition temperature of 50° C. or higher and a weight-average molecular weight of about 3.0×10 4 or more; (ii) an epoxy resin comprising at least one compound having two cr more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid; and (iii) a monomer having an ethylenically unsaturated bond.
Claim 11
Dependent Claim
143 words
A liquid jet recording head, having a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising: (i) a linear polymer having a glass transition temperature of 50° C. or higher and a weight-average molecular weight of about 3.0×10 4 or more; (ii) an epoxy resin comprising at least one compound having two cr more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid; and (iii) a monomer having an ethylenically unsaturated bond.
Claim 12
Dependent Claim
47 words
A liquid jet recording head according to claim 7, wherein said resin composition contains said linear polymer (i) in an amount of 20 to 80 parts by weight and said resin (ii) and said monomer (iii) in a total amount of 80 to 20 parts by weight.
Claim 13
Dependent Claim
30 words
A liquid jet recording head according to claim 7, wherein the ratio of amounts of said resin (ii) and said monomer (iii) is in a range from 30:70 to 70:30.
Claim 14
Dependent Claim
63 words
A liquid jet recording head according to claim 7, wherein said resin composition further comprises a radical polymerization initiator to be activated by the effect of the active energy ray in an amount of 0.1 to 20 parts by weight with respect to a total amount of 100 parts by weight of said linear polymer (i), said resin (ii) and said monomer (ii).
Claim 15
Dependent Claim
67 words
A liquid jet recording head according to claim 7, wherein said resin composition further comprises a photosensitive aromatic onium salt compound containing an element of the group VIa or Va of the periodic table, in an amount of 0.2 to 15 parts by weight, with respect to a total amount of 100 parts by weight of said linear polymer (i), said resin (ii) and said monomer (iii).
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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |