Patent EP0436955A2 successfully refreshed from Google Patents.
EP0436955A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Set temperature changeable image fixing apparatus
Assignee: Canon Inc
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Filing: 1990-12-28
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Granted: —
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Expires: 2010-12-28
Abstract
Abstract An image fixing apparatus (11) includes a heater (20) maintained at a controlled temperature; a film (25) contacted to the heater (20) and movable together with and in sliding contact with a recording material (P) carrying a visualized image, wherein the visualized image is heated by the heater (20) through the film (25); a temperature detecting element (31) for detecting a temperature of the film (25) or a member contacted to the film; and a controller (M) for changing a level of the controlled temperature on the basis of an output of the temperature detecting element (31) before start of an image fixing operation of the image fixing apparatus.
Inventors
- 👤 Shigeo C/O Canon Kabushiki Kaisha Kimura
- 👤 Kensaku C/O Canon Kabushiki Kaisha Kusaka
- 👤 Atsushi C/O Canon Kabushiki Kaisha Hosoi
- 👤 Akira C/O Canon Kabushiki Kaisha Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 04:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2039; G03G2215/00; G03G2215/20; G03G2215/2003; G03G2215/2016; G03G2215/2035; G03G2215/2038
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
An image fixing apparatus, comprising: a heater maintained at a controlled temperature; a film contacted to said heater and movable together with and in sliding contact with a recording material carrying a visualized image, wherein the visualized image is heated by said heater through said film; a temperature detecting element for detecting a temperature of said film or a member contacted to said film; and control means for changing a level of said controlled temperature on the basis of an output of said temperature detecting element before start of an image fixing operation of said image fixing apparatus.
Claim 2
Dependent Claim
41 words
An apparatus according to Claim 1, wherein said temperature detecting element detect a temperature of said heater, and during the fixing operation, said control means controls power supply to said heater to provide the level of the temperature of said heater.
Claim 3
Dependent Claim
24 words
An apparatus according to Claim 1, wherein said set temperature is determined by said control means before start of power supply to said heater.
Claim 4
Dependent Claim
25 words
An apparatus according to Claim 1, wherein said temperature detecting element detects the temperature of a side of said film contactable to the visualized image.
Claim 5
Dependent Claim
36 words
An apparatus according to Claim 1, wherein said temperature detecting element detects the temperature of the member contacted to a side of said film opposite from another side of said film contactable to the visualized image.
Claim 6
Dependent Claim
24 words
An apparatus according to Claim 1, wherein said heater is fixed during fixing operation, and said film is in sliding contact with said heater.
Claim 7
Dependent Claim
53 words
An apparatus according to Claim 6, wherein said heater comprises a base plate and a heat generating resistor layer on a film side of the base plate generating heat upon electric power supply thereto, and the heat from the heat generating resistor layer is transferred to the visualized image without air layer therebetween.
Claim 8
Dependent Claim
38 words
An apparatus according to Claim 1, wherein the visualized image comprises powdery toner, and the recording material is separated from said film while a temperature of the toner is higher than a glass transition point of the toner.
Claim 9
Dependent Claim
17 words
An apparatus according to Claim 1, wherein said film is in the form of an endless belt.
Claim 10
Dependent Claim
18 words
An apparatus according to Claim 7, wherein a thickness of said film is not more than 100 microns.
Claim 11
Dependent Claim
18 words
An apparatus according to Claim 10, wherein a thickness of said film is not more than 40 microns.
Claim 12
Dependent Claim
98 words
An image fixing apparatus, comprising: a heater maintained at a controlled temperature; a film contacted to said heater and movable together with and in sliding contact with a recording material carrying a visualized image, wherein the visualized image is heated by said heater through said film; a temperature detecting element for detecting a temperature of said film or a member contacted to said film; and control means for changing electric power supply to said heater on the basis of an output of said temperature detecting element before start of an image fixing operation of said image fixing apparatus.
References Cited (Backward Citations)
No citation records indexed.
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