Fixing apparatus and image forming apparatus

Abstract

To facilitate attachment and detachment of belt-like means in a configuration in which a terminal unit is provided on heating means that rotates while supporting the belt-like means and heats the belt-like means, compared with a case where the outer diameter of the terminal unit is larger than the outer diameter of the heating means.SOLUTION: A fixing device comprises: endless belt-like means (1); heating means (2) that rotates while supporting the belt-like means (1), and generates heat upon energization to heat the belt-like means (1); and a terminal unit (21) that is provided at an end of the heating means (2) to supply power to the heating means (2). The outer diameter of the terminal unit (21) is equal to or less than the outer diameter of the heating means (2).SELECTED DRAWING: Figure 2

Claims

1. An endless strip-shaped means, A heating means that supports and rotates the strip-shaped means and generates heat when energized to heat the strip-shaped means, A terminal portion is provided at the end of the heating means and supplies power to the heating means, Equipped with, The outer diameter of the terminal portion is less than or equal to the outer diameter of the heating means, The terminal portion rotates integrally with the heating means. A fixing device characterized by the following features.

2. The outer diameter of the terminal portion is less than the outer diameter of the heating means. The fixing device according to feature 1.

3. Supply means for supplying lubricant to the inner surface of the strip-shaped means to lubricate the space between the strip-shaped means and the heating means. The fixing device according to claim 2, characterized by comprising:

4. A cylindrical heating means having a cylindrical base layer and a heating layer disposed on the inner surface side of the base layer, The terminal portion electrically connected to the heating layer, A fixing device according to any one of claims 1 to 3, characterized by comprising:

5. The terminal portion having a through-hole along the axial direction of the cylindrical heating means, The fixing device according to claim 4, characterized by comprising:

6. A pressurizing means for transporting a medium by pressing it between the outer surface of the aforementioned strip-shaped means and the medium, An opposing means that supports the inner surface of the strip-shaped means and is positioned opposite the pressurizing means, wherein the opposing means is non-rotating relative to the rotating strip-shaped means, A fixing device according to any one of claims 1 to 5, characterized by comprising:

7. A pressurizing means for transporting a medium by pressing it between the outer surface of the aforementioned strip-shaped means and the medium, An opposing means that supports the inner surface of the strip-shaped means and is positioned opposite the pressurizing means, the opposing means which rotates in conjunction with the rotation of the strip-shaped means, A fixing device according to any one of claims 1 to 5, characterized by comprising:

8. Image holding means, The image holding means includes a latent image forming means for forming a latent image, A developing means for developing the latent image of the image holding means, A transfer means for transferring the image of the image holding means onto a medium, A fixing device according to any one of claims 1 to 7 for fixing the image on the aforementioned medium, An image forming apparatus characterized by comprising the following:

Images