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Fixing belt and fixing device

A technology of fixing belt and endless belt, which is applied to instruments, equipment of electric recording process applying charge pattern, optics, etc., can solve the problem that the insulation and withstand voltage of the fixing belt and the heater cannot be fully ensured.

Pending Publication Date: 2021-05-25
TOSHIBA TEC KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this countermeasure, if the heating surface of the planar heater is brought into direct contact with the inner side of the fixing belt, there is a possibility that the insulation withstand voltage between the fixing belt and the heater cannot be sufficiently ensured.

Method used

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  • Fixing belt and fixing device
  • Fixing belt and fixing device
  • Fixing belt and fixing device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0022] figure 1 It is a diagram showing an outline of the configuration of the image forming apparatus according to the first embodiment. The image forming apparatus 100 of the first embodiment is, for example, a multifunctional device. Image forming apparatus 100 includes housing 10 , display 1 , scanner unit 2 , image forming unit 3 , sheet supply unit 4 , conveyance unit 5 , discharge tray 7 , reversing unit 9 , control panel 8 , and control unit 6 . It should be noted that the image forming unit 3 may be a device that fixes a toner image, or may be an inkjet device.

[0023] The image forming apparatus 100 forms an image on a sheet S using a developer such as toner. The sheet S is, for example, paper or label paper. The sheet S may be any object as long as the image forming apparatus 100 can form an image on its surface.

[0024] The casing 10 forms the outer shape of the image forming apparatus 100 . The display 1 is an image display device such as a liquid crystal d...

no. 2 approach

[0104] In the first embodiment, the case where the base layer of the fixing film 35 is microconducted has been described. In contrast, in the second embodiment, a case where a so-called pure polyimide material (hereinafter referred to as “pure PI material”) is used for the base layer of the fixing film 35 will be described. Pure PI material is a material with non-conductivity. Here, as described above, the fixing film 35 is constituted by laminating a base layer, an elastic layer (elastic rubber), and a release layer (PFA tube) sequentially from the inside of the cylindrical shape. More specifically, a primer layer is provided between the elastic rubber and the PFA tube to improve the adhesion between the two. In the second embodiment, a non-conductive pure PI material is used for the base layer, and by adjusting the conductivity of the elastic rubber, PFA tube or primer, it is possible to suppress electrification and ensure insulation withstand voltage at the same time.

[...

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PUM

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Abstract

A fixing belt and a fixing device suppress charging of the fixing belt and permit securing of a withstand voltage of secondary parts of the fixing belt are provided in addition to a heater. The fixing belt is formed of a tubular endless fixing film including, in order from an inner peripheral side of the film, a base layer, an elastic layer, and a release layer. A surface resistivity of the fixing belt measured from the base layer side is 7 [LOG [Omega] / sq.] or more and 10 [LOG [Omega] / sq.] or less.

Description

technical field [0001] Embodiments of the present invention generally relate to a fixing belt and a fixing device. Background technique [0002] Conventionally, there is a fixing device that heats the fixing belt from the inside of the cylindrical fixing belt with a planar heater. In such a fixing device, as for the base material of the fixing belt, in many cases, a metal-based material is used for a fixing belt for a high-speed machine, and a non-metallic material is used for a fixing belt for a medium-speed machine and a fixing belt for a low-speed machine. Metallic materials. The reason is that the high-speed machine takes a lot of heat from the paper, and if it is not for the fixing belt with a certain degree of heat capacity, the temperature of the fixing belt cannot be maintained. In addition, regarding cost, it is difficult to use an expensive metal fixing belt for an inexpensive low-speed machine. Therefore, if there is no problem with the heat capacity, it is des...

Claims

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Application Information

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IPC IPC(8): G03G15/20
CPCG03G15/2057G03G15/2053G03G15/206G03G2215/2035G03G15/2064G03G2215/2038
Inventor 佐伯谅太
Owner TOSHIBA TEC KK