Patent US4547447A successfully refreshed from Google Patents.
US4547447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive members for electrophotography containing phthalocyanine
Assignee: Minolta Co Ltd
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Filing: 1984-07-06
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Granted: 1985-10-15
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Expires: 2004-07-06
Abstract
Abstract A photosensitive member comprises a photosensitive layer which includes a phthalocyanine photoconductive material dispersed in a resin binder comprising a thermosetting acrylic resin containing hydroxyl groups or amide bond, and a melamine resin. Preferred mixing weight ratio of acrylic resin to melamine resin is about 95:5 to 40:60. Preferred phthalocyanine compounds are copper phthalocyanine, metal-free phthalocyanine and their derivatives.
Inventors
- 👤 Hideaki Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:14
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0546; G03G5/0557; G03G5/0575; G03G5/0592
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
A photosensitive member comprising a photosensitive layer which includes phthalocyanine photoconductive material dispersed in a resin binder, said binder including a thermosetting acrylic resin containing hydroxyl groups or amide bonds, and a melamine resin, the mixing weight ratio of said acrylic resin to malamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 2
Dependent Claim
81 words
A photosensitive member comprising a photosensitive layer which includes phthalocyanine photoconductive material dispersed in a resin binder, said binder including a thermosetting acrylic resin containing hydroxyl groups or amide bonds, and a melamine resin, the mixing weight ratio of said acrylic resin to malamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 3
Dependent Claim
89 words
A photosensitive member comprising a photosensitive layer which includes a photoconductive material of phthalocyanine compound dispersed in a binder of high molecular material, said binder including melamine resin and a thermosetting acrylic resin containing hydroxyl groups in the branches of the molecule, the mixing weight ratio of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 4
Dependent Claim
89 words
A photosensitive member comprising a photosensitive layer which includes a photoconductive material of phthalocyanine compound dispersed in a binder of high molecular material, said binder including melamine resin and a thermosetting acrylic resin containing hydroxyl groups in the branches of the molecule, the mixing weight ratio of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 5
Dependent Claim
26 words
A photosensitive member as claimed in claim 2 wherein said phthalocyanine compound is selected from the group consisting of copper phthalocyanine, metal-free phthalocyanine and their derivatives.
Claim 6
Dependent Claim
100 words
A photosensitive member comprising a photosensitive layer which includes a phthalocyanine compound dispersed in a binder, said binder including a melamine resin and a thermosetting acrylic resin containing hydroxyl groups or amide bonds and a copolymer formed from at least two components selected from the group consisting of styrene, methyl methacrylate and n-butyl acrylate, the mixing ratio of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 7
Dependent Claim
100 words
A photosensitive member comprising a photosensitive layer which includes a phthalocyanine compound dispersed in a binder, said binder including a melamine resin and a thermosetting acrylic resin containing hydroxyl groups or amide bonds and a copolymer formed from at least two components selected from the group consisting of styrene, methyl methacrylate and n-butyl acrylate, the mixing ratio of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 8
Dependent Claim
123 words
A photosensitive member comprising a photosensitive layer which includes a phthalocyanine photoconductive material dispersed in a binder, said photoconductive material including a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has a benzene nuclei substituted with at least one electron attractive group selected from the group consisting of nitro group, cyano group, halogen atoms, sulphonyl and carboxyl groups, said binder including a thermosetting acrylic resin containing hydroxyl groups or amide bond, and a melamine resin, the mixing weight of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
Claim 9
Dependent Claim
123 words
A photosensitive member comprising a photosensitive layer which includes a phthalocyanine photoconductive material dispersed in a binder, said photoconductive material including a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has a benzene nuclei substituted with at least one electron attractive group selected from the group consisting of nitro group, cyano group, halogen atoms, sulphonyl and carboxyl groups, said binder including a thermosetting acrylic resin containing hydroxyl groups or amide bond, and a melamine resin, the mixing weight of said acrylic resin to melamine resin being about 95:5 to 40:60, and said phthalocyanine photoconductive material being included in the photosensitive layer in an amount of 15 to 100 parts by weight with respect to 100 parts by weight of said binder.
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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |