# US 2025/0093801 A1 · Fixing device

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- Number: US 2025/0093801 A1
- Document ID: US20250093801A1
- Status: Published application
- Kind: A1
- Application number: 18/970,101
- Filed: 2024-12-05
- Published: 2025-03-20
- Earliest claimed: 2021-10-04
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Takafumi Suzuki
- Web page: https://patentgrep.com/patent/US20250093801A1

## CPC

- G03G 15/2053: {Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating}
- G03G 15/2017: {Structural details of the fixing unit in general, e.g. cooling means, heat shielding means (G03G15/2053 takes precedence)}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A fixing device for fixing a toner image to the recording medium includes a film unit, a roller, and a frame. The film unit includes a tubular film that rotates while being in contact with the recording medium. The roller is in contact with an outer surface of the tubular film and form a fixing nip portion with the film unit to pinch and convey the recording medium. The frame includes a first side frame to hold one end portion of the film unit and includes a second side frame to hold the other end portion of the film unit. At least one of the first or second side frames includes a first plate and a second plate. The first plate is fixed to the second plate and is disposed on a side of a surface of the second plate orthogonal to a longitudinal direction of the fixing device.

## Claims

### Claim 1

A fixing device for fixing a toner image formed on a recording medium to the recording medium, the fixing device comprising:
a film unit including a tubular film that is configured to rotate while being in contact with the recording medium;
a roller configured to be in contact with an outer surface of the tubular film, wherein the roller and the film unit form a fixing nip portion configured to pinch and convey the recording medium on which the toner image is formed; and
a frame that includes a first side frame configured to hold one end portion of the film unit in a longitudinal direction of the fixing device and includes a second side frame configured to hold the other end portion of the film unit in the longitudinal direction,
wherein at least one of the first side frame and the second side frame includes a first plate configured to hold at least one of the film unit and the roller, and a second plate disposed substantially parallel to the first plate and having a surface facing the film unit, and
wherein the first plate is fixed to the second plate and is disposed on a side of the surface of the second plate orthogonal to the longitudinal direction.