Patent US5011401A successfully refreshed from Google Patents.
US5011401A
Expired / Lapsed
US
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Elastic rotatable member and fixing apparatus
Assignee: Canon Inc
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Filing: 1990-05-14
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Granted: 1991-04-30
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Expires: 2010-05-14
Abstract
Abstract An elastic rotatable member conveniently usable as an image fixing member has a base member, a first primer layer, an elastic layer, a second primer layer and a resin layer in the order named. The first primer layer has a thermal conductivity higher than that of the second primer layer. Using the elastic rotatable member, its sheet conveying properties, releasability, wear resistance and durability are improved. When used for an image fixing rotatable member, its image fixing properties are improved.
Inventors
- 👤 Masaaki Sakurai
- 👤 Iichiro Yamamoto
- 👤 Masahiro Goto
- 👤 Tsukasa Kuge
- 👤 Michio Shigenobu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:35
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; G03G15/2017; G03G15/2025; G03G21/00; G03G21/0005; G03G21/0058
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
101 words
An elastic rotatable member, comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer outside said elastic material layer; and a second primer layer between said elastic material layer and said resin layer; wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 2
Dependent Claim
101 words
An elastic rotatable member, comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer outside said elastic material layer; and a second primer layer between said elastic material layer and said resin layer; wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 3
Dependent Claim
16 words
A member according to claim 1, wherein said elastic material layer is composed of silicone rubber.
Claim 4
Dependent Claim
17 words
A member according to claim 2, wherein said first primer layer is composed of a silicone primer.
Claim 5
Dependent Claim
16 words
A member according to claim 2, wherein said resin layer is composed of a fluorine resin.
Claim 6
Dependent Claim
19 words
A member according to claim 4, wherein said second primer layer is composed of a silicone or fluorine primer.
Claim 7
Dependent Claim
25 words
A member according to claim 4, wherein said resin layer comprises a resin selected from the group consisting of: tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin and tetrafluoroethylene resin.
Claim 8
Dependent Claim
22 words
A member according to claim 1, wherein said elastic rotatable member is an image fixing rotatable member for fixing an unfixed image.
Claim 9
Dependent Claim
144 words
An image fixing apparatus, comprising: first and second rotatable members press-contacted to each other to form a nip to which an image bearing member supporting an unfixed image is passed through, during which the image is fixed; at least one of said first and second rotatable member comprising; a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer outside said elastic material layer; and a second primer layer between said elastic material layer and said resin layer; wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 10
Dependent Claim
144 words
An image fixing apparatus, comprising: first and second rotatable members press-contacted to each other to form a nip to which an image bearing member supporting an unfixed image is passed through, during which the image is fixed; at least one of said first and second rotatable member comprising; a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer outside said elastic material layer; and a second primer layer between said elastic material layer and said resin layer; wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 11
Dependent Claim
16 words
An apparatus according to claim 8, wherein said elastic material layer is composed of silicone rubber.
Claim 12
Dependent Claim
17 words
An apparatus according to claim 9, wherein said first primer layer is composed of a silicone primer.
Claim 13
Dependent Claim
16 words
An apparatus according to claim 9, wherein said resin layer is composed of a fluorine resin.
Claim 14
Dependent Claim
19 words
An apparatus according to claim 11, wherein said second primer layer is composed of a silicone or fluorine primer.
Claim 15
Dependent Claim
25 words
A apparatus according to claim 11, wherein said resin layer comprises a resin selected from the group consisting of: tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin and tetrafluoroethylene resin.
Claim 16
Dependent Claim
30 words
An apparatus according to claim 8, wherein said at least one of the rotatable members is adapted to directly contact the unfixed image and is provided with heating means therein.
Claim 17
Dependent Claim
108 words
An elastic rotatable member, comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer, outside said elastic material layer, formed by applying and sintering resin material; and a second primer layer between said elastic material layer and said resin layer, wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 18
Dependent Claim
108 words
An elastic rotatable member, comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer, outside said elastic material layer, formed by applying and sintering resin material; and a second primer layer between said elastic material layer and said resin layer, wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 19
Dependent Claim
16 words
A member according to claim 15, wherein said elastic material layer is composed of silicone rubber.
Claim 20
Dependent Claim
17 words
A member according to claim 16, wherein said first primer layer is composed of a silicone primer.
Claim 21
Dependent Claim
16 words
A member according to claim 16, wherein said resin layer is composed of a fluorine resin.
Claim 22
Dependent Claim
19 words
A member according to claim 18, wherein said second primer layer is composed of a silicone or fluorine primer.
Claim 23
Dependent Claim
25 words
A member according to claim 18, wherein said resin layer comprises a resin selected from the group consisting of: tetrafluoroethylene-perfluoroalkoxyethylene copolymer resin and tetrafluoroethylene resin.
Claim 24
Dependent Claim
22 words
A member according to claim 15, wherein said elastic rotatable member is an image fixing rotatable member for fixing an unfixed image.
Claim 25
Dependent Claim
151 words
An image fixing apparatus, comprising: first and second rotatable members press-contacted to each other to form a nip to which an image bearing member supporting an unfixed image is passed through, during which the image is fixed, at least one of said first and second rotatable members comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer, outside said elastic material layer, formed by applying and sintering resin material; and a second primer layer between said elastic material layer and said resin layer, wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 26
Dependent Claim
151 words
An image fixing apparatus, comprising: first and second rotatable members press-contacted to each other to form a nip to which an image bearing member supporting an unfixed image is passed through, during which the image is fixed, at least one of said first and second rotatable members comprising: a base member; an elastic material layer outside said base member; a first primer layer between said base member and said elastic material layer; a resin layer, outside said elastic material layer, formed by applying and sintering resin material; and a second primer layer between said elastic material layer and said resin layer, wherein said first primer layer has a thermal conductivity which is larger than that of said second primer layer; and wherein said elastic material layer is composed of an elastic material, and the elastic material layer has a thermal conductivity which is higher than that of the first primer layer.
Claim 27
Dependent Claim
16 words
An apparatus according to claim 22, wherein said elastic material layer is composed of silicone rubber.
Claim 28
Dependent Claim
17 words
An apparatus according to claim 23, wherein said first primer layer is composed of a silicone primer.
Claim 29
Dependent Claim
16 words
An apparatus according to claim 23, wherein said resin layer is composed of a fluorine resin.
Claim 30
Dependent Claim
18 words
An apparatus according to claim 25, wherein said second primer is composed of a silicone or fluorine primer.
Claim 31
Dependent Claim
25 words
An apparatus according to claim 25, wherein said resin layer comprises a resin selected from the group consisting of: tetrafluoroethylene-perfluoroalkoxyethlyene copolymer resin and tetrafluoroethylene resin.
Claim 32
Dependent Claim
30 words
An apparatus according to claim 22, wherein said at least one of said rotatable members is adapted to directly contact the unfixed image and is provide with heating means therein.
Claim 33
Dependent Claim
55 words
A member according to claim 1 or 15, wherein the first primer has thermal conductivity of not less than 0.6×10 -3 cal·cm/sec·cm 2 ·°C.; said elastic material layer has a thermal conductivity of 0.8×10 -3 cal·cm/sec·cm 2 ·°C.; and said second primer has a thermal conductivity of not less than 0.4×10 -3 cal·cm/sec·cm 2 ·°C.
Claim 34
Dependent Claim
38 words
A member according to claim 29, wherein said elastic material layer has a thickness which is larger than the thickness of the second primer layer, which in turn is larger than the thickness of the first primer layer.
Claim 35
Dependent Claim
26 words
A member according to claim 30, wherein the elastic material layer has a thickness which is larger than 6 times the thickness of the resin layer.
Claim 36
Dependent Claim
55 words
An apparatus according to claim 8 or 22, wherein the first primer has thermal conductivity of not less than 0.6×10 -3 cal·cm/sec· 2 ·°C; said elastic material layer has a thermal conductivity of 0.8×10 -3 cal·cm/sec·cm 2 ·°C.; and said second primer has a thermal conductivity of not less than 0.4×10 -3 cal·cm/sec·cm 2 ·°C.
Claim 37
Dependent Claim
38 words
An apparatus according to claim 32, wherein said elastic material layer has a thickness which is larger than the thickness of the second primer layer, which in turn is larger than the thickness of the first primer layer.
Claim 38
Dependent Claim
26 words
An apparatus according to claim 33, wherein the elastic material layer has a thickness which is larger than 6 times the thickness of the resin layer.
References Cited (Backward Citations)
US3785286A
Cited
US4054685A
Cited
US4084500A
Cited
US4078286A
Cited
US4198739A
Cited
JPS6122377A
Cited
JPS6183567A
Cited
US4700450A
Cited
JPS61250668A
Cited
US4632855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |