US5716747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing device and method of fixing
Assignee: Konica Minolta Inc
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Filing: 1995-09-07
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Granted: 1998-02-10
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Expires: 2015-09-07
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 1.4×10 -6 cc/cm 2 .
Inventors
- 👤 Kazuhiko Uneme
- 👤 Kazuo Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:15
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
121 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: ##STR10## 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
121 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: ##STR10## 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 3
Dependent Claim
25 words
The fixing device of claim 1, wherein a coating amount of the fluorine containing silicone oil is not more than 1.4×10 -6 cc/cm 2 .
Claim 4
Dependent Claim
28 words
The fixing device of claim 2, wherein Rf represents Z--(CF.sub.2).sub.m -- where z represents hydrogen or a fluorine atom, and m represents an integer of 2 to 10.
Claim 5
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 ethylenetetrafluorideperfluoroalkoxyethylene copolymer, polytetrafluoroethylene and polyfluoroethyleneproplylene copolymer.
References Cited (Backward Citations)
JPS5118544A
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JPS52124338A
Cited
DE2716203A1
Cited
EP0018140B1
Cited
EP0077991A2
Cited
EP0441114A1
Cited
WO1993021567A1
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EP0640888A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-09 | 2001-08-11 | 2002-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-09 | 2005-08-11 | 2006-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-09 | 2009-08-11 | 2010-02-10 | $7700.00 | Window Closed / Lapsed |