# US 2017/0255144 A1 · Fixing device and image forming apparatus

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- Number: US 2017/0255144 A1
- Document ID: US20170255144A1
- Status: Published application
- Kind: A1
- Application number: 15/220,915
- Filed: 2016-07-27
- Published: 2017-09-07
- Earliest claimed: 2016-03-03
- Assignees: Fuji Xerox Co., Ltd.
- Applicants: Fuji Xerox Co., Ltd.
- Inventors: Jouta KOBAYASHI; Yasutaka GOTOH; Sou MORIZAKI; Kyogo SOSHI; Hiroko FURUKATA
- Web page: https://patentgrep.com/patent/US20170255144A1

## CPC

- G03G 15/2053: {Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating}
- G03G 15/206: {Structural details or chemical composition of the pressure elements and layers thereof}
- G03G 2215/2025: the fixing nip having a rotating belt support member opposing a pressure member
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A fixing device includes a heating belt that is provided rotatably around an orthogonal direction orthogonal to a transport direction of a recording medium as an axial direction, and is configured to heat a developer on the recording medium; a support member that is provided inside the heating belt and supports the heating belt; and plural pressing rotational bodies that each are rotatable around the orthogonal direction as an axial direction, are arranged in the transport direction, and are configured to press the heating belt and the recording medium toward the support member.

## Claims

### Claim 1

A fixing device comprising:
a heating belt that is provided rotatably around an orthogonal direction orthogonal to a transport direction of a recording medium as an axial direction, and is configured to heat a developer on the recording medium;
a support member that is provided inside the heating belt and supports the heating belt; and
a plurality of pressing rotational bodies that each are rotatable around the orthogonal direction as an axial direction, are arranged in the transport direction, and are configured to press the heating belt and the recording medium toward the support member.

### Claim 2 (depends on 1)

The fixing device according to claim 1, wherein the pressing rotational body arranged at a most downstream side in the transport direction among the plurality of pressing rotational bodies is a driving roller that is rotated by a driving unit.

### Claim 3 (depends on 1)

The fixing device according to claim 1, wherein at least one of the plurality of pressing rotational bodies is a roller having a hollow shaft portion.

### Claim 4 (depends on 1)

The fixing device according to claim 1, wherein the pressing rotational body provided at an upstream side in the transport direction among the plurality of pressing rotational bodies is a pressing belt.

### Claim 5 (depends on 4)

The fixing device according to claim 4, further comprising an elastic body that is provided inside the pressing belt and is configured to cause an elastic force to act on the pressing belt.

### Claim 6 (depends on 1)

An image forming apparatus comprising:
a developer image forming unit that forms a developer image on a recording medium; and
the fixing device according to claim 1 that fixes the developer image on the recording medium formed by the developer image forming unit, to the recording medium.