A thermal fixing device includes a fixing member, a flexible endless belt, a flexible endless belt, a rotary pressure member, a heating unit, and a rotation detector. The flexible endless belt is disposed on an outer circumferential surface of the fixing member. The rotary pressure member is disposed parallel to and pressing against the fixing member via the endless belt. The heating unit heats the endless belt. The rotation detector detects a rotation speed of the endless belt. The heating unit is powered off when the rotation speed of the endless belt detected by the rotation detector is at or below a predetermined threshold value.

Claims

9 · 3 independent · depth 2

9 granted claims

›1.independentA thermal fixing device, comprising:na fixing member;a flexible endless belt disposed on an outer circumferential surface of the fixing member;a rotar…+6

›2.↳ 1The fixing device according to claim 1, wherein the rotary member is a rotation detection roller pressed against the outer circumferential surface of …d2

›3.↳ 1The fixing device according to claim 1, wherein the rotary member comprises an auxiliary roller disposed away from the endless belt and a rotary belt …d2

›4.↳ 1The fixing device according to claim 1, wherein the rotary member is a ring rotatably mounted on a shaft of the fixing member at a rotational center o…d2

›5.↳ 1The fixing device according to claim 1, wherein the endless belt is an integral part of the fixing member and rotated by rotation of the fixing member…d2

›6.↳ 1The fixing device according to claim 1, wherein the endless belt is formed separately from the fixing member and rotated by rotation of the fixing mem…d2

›7.↳ 1The fixing device according to claim 1, wherein the endless belt is formed separately from the fixing member and rotated by rotation of any member oth…d2

›8.independentAn image forming apparatus comprising a fixing device,nthe fixing device comprising:a fixing member;a flexible endless belt disposed on an outer circu…

›9.independentA thermal fixing device, comprising:na fixing member;a flexible endless belt disposed on an outer circumferential surface of the fixing member;a rotar…

Classifications

2 codes

IPC · International Patent Classification

Section G — Physics

G03G15/20

USPC · US Patent Classification

399/33

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File wrapper

Pendency

2.6 y

965 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Examiner

Quana M Grainger

art unit 2852 · TC 2800

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Citations: 58 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20110229161 A1	22 Sep 2011

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