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Image heating apparatus

一种加热设备、图像的技术，应用在感应加热、电/磁/电磁加热、应用电荷图形的电记录工艺的设备等方向，能够解决定影辊温度沿纵向方向不一致等问题

Inactive Publication Date: 2006-04-26
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case where the above-described fixing roller of the halogen heater type fixing device is used in the induction heating type fixing device, the distance between the coil and the inner surface of the fixing roller differs in the longitudinal direction of the fixing roller, so that the temperature of the fixing roller varies along the portrait orientation becomes inconsistent

Method used

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Examples

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Embodiment Construction

[0024] Preferred embodiments of the present invention will be described more specifically below with reference to the accompanying drawings. In the following embodiments, unless otherwise specified, the size, material and shape of each structural member or device and their relative configuration do not limit the scope of the present invention. In addition, repeated explanations are omitted unless specifically stated.

[0025] figure 1 is a schematic sectional view of an image forming apparatus including an electromagnetic induction type fixing apparatus according to an embodiment of the present invention. figure 2 is a sectional view of the fixing device according to this embodiment.

[0026] First, the structure and operation of the image forming apparatus 100 will be described. The user places the original O on the original supporting glass plate 101 with the image forming surface facing down and covers the original O with the original pressing plate 102 in accordance wi...

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PUM

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Abstract

Provided are a fixing device and an image forming device having good fixability in the longitudinal direction thereof. The fixing device includes an electromagnetic induction heating member as a hollow rotating member, and a magnetic flux generating member for causing the electromagnetic induction heating member to generate heat by generating magnetic flux in the electromagnetic induction heating member. The fixing device fixes the toner image to the recording material by imparting heat energy generated by the electromagnetic induction heating member to the conveyed recording material. The electromagnetic induction heating member has another thickness in its longitudinal direction and a uniform diameter in a surface facing the magnetic flux generating device in the longitudinal direction.

Description

technical field [0001] The present invention relates to an image heating apparatus for heating an image on a recording material. As the image heating device, there are a fixing device for fixing an unfixed image onto a recording material, a glossing device for improving image gloss by reheating an image fixed on a recording material, and the like. Background technique [0002] Conventionally, an induction heating type fixing device has been proposed, as described in Japanese Laid-Open Patent Application (JP-A) Sho 59-33787. In this induction heating type heating device, a coil is placed concentrically in a hollow fixing roller made of a metal conductor and a high-frequency current is supplied to generate a high-frequency magnetic field, whereby an induced eddy current is generated on the fixing roller so that the fixing roller itself passes Joule heat is generated by the surface resistance of the fixing roller itself. Compared with the conventional fixing device based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20H05B6/02
CPCG03G15/20H05B6/145
Inventor 竹松浩二渡边冈树若原伸一郎白潟二郎
Owner CANON KK