Patent EP0709749A1 successfully refreshed from Google Patents.
EP0709749A1
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EP
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Fixing device and method of fixing
Assignee: Konica Minolta Inc
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Filing: 1995-09-12
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Granted: —
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Expires: 2015-09-12
Abstract
Abstract A fixing device includes a pair of fixing rollers to heat toner images and to fix the toner images on a recording medium in which at least one roller coming into contact with toner is provided thereon with fluorine containing resins and a device for coating fluorine containing silicone oil on the surface of the fluorine containing resins at a coating amount of not more than 1.4 x 10⁻⁶ cc/cm².
Inventors
- 👤 Kazuhiko Uneme
- 👤 Kazuo Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:02
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; G03G15/2017; G03G15/2025; G03G2215/00; G03G2215/20; G03G2215/2093
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A fixing device comprising: (a) a pair of fixing rollers for heating and pressing a toner image and for fixing the toner image on a recording medium, at least an outermost layer of one roller which comes into contact with the toner image being provided with fluorine containing resin; and (b) a coating device for coating fluorine containing silicone oil on the outermost layer of the one roller, wherein the fluorine containing silicone oil to be coated has a structural unit represented by the following formula: where X represents saturated hydrocarbon having 1 to 4 carbon atoms or an aryl group, Rf represents fluoroalkyl group having 2 to 10 carbon atoms, and n represents an integer of 1 to 4.
Claim 2
Dependent Claim
24 words
The fixing device of claim 1, wherein a coating amount of the fluorine containing silicone oil is not more than 1.4 x 10⁻⁶ cc/cm².
Claim 3
Dependent Claim
31 words
The fixing device of claim 2, wherein Rf represents Z - (CF₂) m - where Z represents hydrogen or a fluorine atom, and m represents an integer of 2 to 10.
Claim 4
Dependent Claim
29 words
The fixing device of claim 1, wherein the fluorine containing resin that forms the outermost layer of the one roller, is one of ethylenetetrafluorite-perfluoroalkoxyethylene copolymer, polytetrafluoroethylene and polyfluoroethyleneproplylene copolymer.
Claim 5
Independent Claim
144 words
A method of fixing a toner image on a recording medium, the method comprising the steps of: (a) providing a pair of fixing rollers to heat and press the toner image, at least an outermost layer of one roller which comes into contact with the toner image being provided with fluorine containing resin; (b) coating fluorine containing silicone oil on the outermost layer of the one roller, wherein the fluorine containing silicone oil to be coated has a structural unit represented by the following formula: where X represents saturated hydrocarbon having 1 to 4 carbon atoms or an aryl group, Rf represents fluoroalkyl group having 2 to 10 carbon atoms, and n represents an integer of 1 to 4; and (c) inserting the recording medium into a nip portion of the pair of fixing rollers to fix the toner image of the recording medium.
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