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US5660750A
Expired / Lapsed
US
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Image heating apparatus with elastic heater
Assignee: Canon Inc
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Filing: 1995-02-21
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Granted: 1997-08-26
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Expires: 2015-02-21
Abstract
Abstract An image heating apparatus includes a heater, the heater including a base material and a heat generating element on the base material; a film contacting the heater at one surface carrying a toner image at the other surface; wherein the toner image on the recording material is heated by heat from the heater through the film, wherein the base material of the heater is of an elastic material.
Inventors
- 👤 Kensaku Kusaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:10
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2016; G03G2215/2035; G03G2215/2038
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
99 words
An image heating apparatus comprising: a heater which is stationary in use; said heater including a base plate; a heat generating element directly on said base plate; and a coating layer directly on said base plate and said heat generating element; and a film having a surface slidable in contact with the coating layer of said heater, and another surface movable with a recording material in contact with a toner image thereon, wherein the toner image on the recording material is heated by heat from said heater through said film; and wherein said base plate is of rubber material.
Claim 2
Dependent Claim
99 words
An image heating apparatus comprising: a heater which is stationary in use; said heater including a base plate; a heat generating element directly on said base plate; and a coating layer directly on said base plate and said heat generating element; and a film having a surface slidable in contact with the coating layer of said heater, and another surface movable with a recording material in contact with a toner image thereon, wherein the toner image on the recording material is heated by heat from said heater through said film; and wherein said base plate is of rubber material.
Claim 3
Dependent Claim
16 words
An apparatus according to claim 1, wherein said rubber has a hardness of 20-90 degrees (JIS-A).
Claim 4
Dependent Claim
21 words
An apparatus according to claim 1, wherein said rubber material is selected from the group consisting of silicone and fluorine rubber.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 1, wherein said heat generating element has a resister sheet.
Claim 6
Dependent Claim
32 words
An apparatus according to claim 1, wherein said heat generating element measured in a movement direction of the recording material, has a width which is smaller than that of said base plate.
Claim 7
Dependent Claim
22 words
An apparatus according to claim 1, wherein said heat generating element is bonded directly on said base plate by a bonding material.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 1, wherein said heat generating element and said coating layer are thin layers.
Claim 9
Dependent Claim
24 words
An apparatus according to claim 7, wherein said heat generating element and said coating layer has a combined thickness of about 10 -2 mm.
Claim 10
Dependent Claim
26 words
An apparatus according to claim 1, wherein the toner image which is not fixed is fixed on the recording material by the heat through said film.
Claim 11
Dependent Claim
30 words
An apparatus according to claim 9, wherein the unfixed toner images includes layers of different color toner materials, which are mixed and fixed on the recording material by the heat.
Claim 12
Dependent Claim
38 words
An apparatus according to claim 1, further comprising a pressing member for cooperating with said heater to form a nip therebetween with said film therebetween, wherein the recording material carrying the toner image is fed by said nip.
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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) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |