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发明授权
CN101561654B 定影装置以及具备该定影装置的图像形成装置 有权

定影装置以及具备该定影装置的图像形成装置
摘要：
本发明提供一种定影装置。该定影装置(15)，具备：定影带(113)，使未定影调色剂像定影在记录介质上；面状加热部件(203)，加热定影带(113)；加压辊(15b)。加热部件(203)包含具有PTC特性的陶瓷发热体(200)与高热传导性热扩散部件(166)。定影带(113)形成为环状，至少挂架在高热传导性热扩散部件(203)上而被加热。陶瓷发热体(200)经由高热传导性热扩散部件(166)与定影带(113)的宽度方向整体抵接。高热传导性热扩散部件(166)与定影带(113)的宽度方向整体抵接，使利用陶瓷发热体(200)产生的热量向定影带(113)的行进方向扩散。
摘要（英）：

The invention provides a fixing device (15), which includes a fixing belt (113) for fixing an unfixed toner image onto a recording medium, a planar heating member (203) for heating the fixing belt (113), and a pressure roller (15b). The heating member (203) includes a ceramic heat generating element (200) having a PTC characteristic, and a high-thermal-conductive heat diffusion member (166). The fixing belt (113) is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member (203), thereby to be heated. The ceramic heat generating element (200) comes into contact with the fixing belt (113) over the full width thereof with the high-thermal-conductive heat diffusion member (166) interposed therebetween. The high-thermal-conductive heat diffusion member (166) comes into contact with the fixing belt (113) over the full width thereof and diffuses heat generated by the ceramic heat generating element (200), in the traveling direction of thefixing belt (113).

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