A fixing device for fixing a toner image onto a recording sheet, the fixing device comprising: a fixing belt including, on an inner circumference side thereof, a resistance heating layer, extending over entire circumference of the fixing belt, operable to emit heat upon flowing of an electric current therethrough; a pressing member operable to press an outer circumference of the fixing belt to form a fixing nip therebetween so that, while the recording sheet passes through the fixing nip, the toner image is fixed onto the recording sheet; and a pair of power supply members arranged inside the fixing belt along the circumferential direction with a predetermined distance therebetween, the power supply members being in contact with the inner circumferential surface of the resistance heating layer in an electrically conductive state along a direction perpendicular to the circumferential direction.

Claims

18 · 3 independent · depth 3

18 granted claims

›1.independentA fixing device for fixing a toner image onto a recording sheet, the fixing device comprising:na fixing belt including, on an inner circumference side…+7

›2.↳ 1The fixing device of claim 1, whereinnthe pair of power supply members are in contact with the resistance heating layer at least over an entire width …d2

›3.↳ 1The fixing device of claim 1, whereinneach of the pair of power supply members is a power supply roller pressed against the inner circumferential surf…d2

›4.↳ 1The fixing device of claim 1, whereinnthe pair of power supply members are power supply rollers around which the fixing belt is wound.d2+2

›7.↳ 1The fixing device of claim 1, whereinnthe resistance heating layer is made of an insulation material in which an electrically conductive filler is dis…d2

›9.↳ 1The fixing device of claim 1, whereinnthe power supply members extend substantially the same width as the width of the fixing belt.d2

›8.independentAn image forming apparatus comprising a fixing device for fixing a toner image onto a recording sheet, the fixing device including:na fixing belt incl…+1

›11.independentA fixing device for fixing a toner image onto a recording sheet, the fixing device comprising:na fixing belt including, on an inner circumference side…+7

›12.↳ 11The fixing device of claim 11, whereinnthe pair of power supply members are in contact with the resistance heating layer at least over an entire width…d2

›13.↳ 11The fixing device of claim 11, whereinneach of the pair of power supply members is a power supply roller pressed against the inner circumferential sur…d2

›14.↳ 11The fixing device of claim 11, whereinnthe pair of power supply members are power supply rollers around which the fixing belt is wound.d2+2

›17.↳ 11The fixing device of claim 11, whereinnthe resistance heating layer is made of an insulation material in which an electrically conductive filler is di…d2

›18.↳ 11The fixing device of claim 11, whereinnthe power supply members extend substantially the same width as the width of the fixing belt.d2

Classifications

5 codes

IPC · International Patent Classification

Section G — Physics

G03G15/00
G03G15/20

USPC · US Patent Classification

399/88399/329399/90

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Pendency

2.4 y

894 days filing → grant

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non-final + final

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2 RCE

Examiner

Erika J Villaluna

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20110222894 A1	15 Sep 2011

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