Patent US4700866A successfully refreshed from Google Patents.
US6072964A
Expired / Lapsed
US
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Image heating apparatus with temperature detecting means
Assignee: Canon Inc
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Filing: 1997-11-28
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Granted: 2000-06-06
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Expires: 2017-11-28
Abstract
Abstract An image heating apparatus has an endless movable member; magnetic flux generating unit for generating a magnetic flux, wherein eddy current is generated in the movable member by the magnetic flux generated by the magnetic flux generating unit, by which the movable member generates heat; wherein a recording material is contacted to an outer surface of the movable member to heat an image on the temperature detecting device for detecting a temperature of the movable member; and wherein the detecting device is in contact with an inner side surface of the movable member.
Inventors
- 👤 Atsuyoshi Abe
- 👤 Hideo Nanataki
- 👤 Tetsuya Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:22
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2039; G03G15/2017
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
155 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; wherein a recording material is contacted to an outer surface of said movable member to heat an image on said recording material; and temperature detecting means for detecting a temperature of said movable member; wherein said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to an inner surface of said movable member by its elasticity, and wherein said supporting member has a fixed end and a free end, and a free end side of said supporting member is contacted to said movable member counterdirectionally with respect to a movement direction of said movable member.
Claim 2
Dependent Claim
155 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; wherein a recording material is contacted to an outer surface of said movable member to heat an image on said recording material; and temperature detecting means for detecting a temperature of said movable member; wherein said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to an inner surface of said movable member by its elasticity, and wherein said supporting member has a fixed end and a free end, and a free end side of said supporting member is contacted to said movable member counterdirectionally with respect to a movement direction of said movable member.
Claim 3
Dependent Claim
40 words
An apparatus according to claim 1, wherein said supporting member is in the form of a plate, and a side of said supporting member opposite from a side thereof supporting said temperature sensor is in contact to said movable member.
Claim 4
Dependent Claim
15 words
An apparatus according to claim 1, wherein said supporting member has a high heat conductivity.
Claim 5
Dependent Claim
41 words
An apparatus according to claim 1, further comprising a back-up member cooperating with said movable member to form a nip therebetween, wherein said temperature sensor is disposed downstream of said nip with respect to a movement direction of said movable member.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 4, wherein a recording material carrying the image is passed through said nip.
Claim 7
Dependent Claim
14 words
An apparatus according to claim 1, wherein said supporting member is a metal plate.
Claim 8
Dependent Claim
21 words
An apparatus according to claim 1, wherein said movable member is in the form of a film having an electroconductive layer.
Claim 9
Dependent Claim
23 words
An apparatus according to claim 1, wherein an unfixed image is fixed on a recording material by the heat from said movable member.
Claim 10
Dependent Claim
28 words
An apparatus according to claim 1, wherein said magnetic flux generating means includes an excitation coil for generating magnetic flux and a core for guiding the magnetic flux.
Claim 11
Dependent Claim
18 words
An apparatus according to claim 1, wherein said magnetic flux generating means is disposed inside said movable member.
Claim 12
Dependent Claim
25 words
An apparatus according to claim 1, wherein said magnetic flux generating means is controlled on the basis of an output of said temperature detecting means.
Claim 13
Dependent Claim
20 words
An apparatus according to claim 1, wherein said temperature sensor is provided at a free end of said supporting member.
Claim 14
Dependent Claim
175 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; a back-up member for forming a nip with said movable member, and wherein a recording material carrying an image is fed by said nip, and the image on the recording material is heated by the heat from said movable member; temperature detecting means for detecting a temperature of said movable member; wherein said magnetic flux generating means is controlled on the basis of an output of said temperature detecting means, and said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to said movable member by its elasticity, and wherein said temperature sensor is disposed adjacent said nip at a downstream side of said nip with respect to a movement direction of said movable member.
Claim 15
Dependent Claim
175 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; a back-up member for forming a nip with said movable member, and wherein a recording material carrying an image is fed by said nip, and the image on the recording material is heated by the heat from said movable member; temperature detecting means for detecting a temperature of said movable member; wherein said magnetic flux generating means is controlled on the basis of an output of said temperature detecting means, and said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to said movable member by its elasticity, and wherein said temperature sensor is disposed adjacent said nip at a downstream side of said nip with respect to a movement direction of said movable member.
Claim 16
Dependent Claim
40 words
An apparatus according to claim 13, wherein said supporting member is in the form of a plate, and a side of said supporting member opposite from a side thereof supporting said temperature sensor is in contact to said movable member.
Claim 17
Dependent Claim
15 words
An apparatus according to claim 13, wherein said supporting member has a high heat conductivity.
Claim 18
Dependent Claim
18 words
An apparatus according to claim 13, wherein a recording material carrying the image is passed through said nip.
Claim 19
Dependent Claim
14 words
An apparatus according to claim 13, wherein said supporting member is a metal plate.
Claim 20
Dependent Claim
21 words
An apparatus according to claim 13, wherein said movable member is in the form of a film having an electroconductive layer.
Claim 21
Dependent Claim
23 words
An apparatus according to claim 13, wherein an unfixed image is fixed on a recording material by the heat from said movable member.
Claim 22
Dependent Claim
28 words
An apparatus according to claim 13, wherein said magnetic flux generating means includes an excitation coil for generating magnetic flux and a core for guiding the magnetic flux.
Claim 23
Dependent Claim
18 words
An apparatus according to claim 13, wherein said magnetic flux generating means is disposed inside said movable member.
Claim 24
Dependent Claim
21 words
An apparatus according to claim 13, wherein said temperature detecting means is contacted to an inner surface of said movable member.
Claim 25
Dependent Claim
185 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; a back-up member for forming a nip with said movable member, and wherein a recording material carrying an image is fed by said nip, and the image on the recording material is heated by the heat from said movable member; temperature detecting means for detecting a temperature of said movable member; wherein said magnetic flux generating means is controlled on the basis of an output of said temperature detecting means, and said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to said movable member by its elasticity, and wherein said temperature detecting means is disposed downstream of said nip, and said magnetic flux generating means is disposed only at an upstream side of said nip, with respect to movement direction of said movable member.
Claim 26
Dependent Claim
185 words
An image heating apparatus comprising: an endless movable member; magnetic flux generating means for generating a magnetic flux, wherein eddy current is generated in said movable member by the magnetic flux generated by said magnetic flux generating means, by which said movable member generates heat; a back-up member for forming a nip with said movable member, and wherein a recording material carrying an image is fed by said nip, and the image on the recording material is heated by the heat from said movable member; temperature detecting means for detecting a temperature of said movable member; wherein said magnetic flux generating means is controlled on the basis of an output of said temperature detecting means, and said temperature detecting means includes a temperature sensor and an elastic supporting member for supporting said temperature sensor, and said temperature detecting means is contacted to said movable member by its elasticity, and wherein said temperature detecting means is disposed downstream of said nip, and said magnetic flux generating means is disposed only at an upstream side of said nip, with respect to movement direction of said movable member.
Claim 27
Dependent Claim
40 words
An apparatus according to claim 23, wherein said supporting member is in the form of a plate, and a side of said supporting member opposite from a side thereof supporting said temperature sensor is in contact to said movable member.
Claim 28
Dependent Claim
15 words
An apparatus according to claim 23, wherein said supporting member has a high heat conductivity.
Claim 29
Dependent Claim
18 words
An apparatus according to claim 23, wherein a recording material carrying the image is passed through said nip.
Claim 30
Dependent Claim
14 words
An apparatus according to claim 23, wherein said supporting member is a metal plate.
Claim 31
Dependent Claim
21 words
An apparatus according to claim 23, wherein said movable member is in the form of a film having an electroconductive layer.
Claim 32
Dependent Claim
23 words
An apparatus according to claim 23, wherein an unfixed image is fixed on a recording material by the heat from said movable member.
Claim 33
Dependent Claim
28 words
An apparatus according to claim 23, wherein said magnetic flux generating means includes an excitation coil for generating magnetic flux and a core for guiding the magnetic flux.
Claim 34
Dependent Claim
18 words
An apparatus according to claim 23, wherein said magnetic flux generating means is disposed inside said movable member.
Claim 35
Dependent Claim
21 words
An apparatus according to claim 23, wherein said temperature detecting means is contacted to an inner surface of said movable member.
Claim 36
Dependent Claim
44 words
An apparatus according to claim 23, wherein said supporting member has a fixed end and a free end, and a free end side of said supporting member is contacted to said movable member counterdirectionally with respect to a movement direction of said movable member.
Claim 37
Dependent Claim
44 words
An apparatus according to claim 13, wherein said supporting member has a fixed end and a free end, and a free end side of said supporting member is contacted to said movable member counterdirectionally with respect to a movement direction of said movable member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-06 | 2003-12-06 | 2004-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-06 | 2007-12-06 | 2008-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-06 | 2011-12-06 | 2012-06-06 | $7700.00 | Window Closed / Lapsed |