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    • 10. 发明专利
    • Fixing device
    • 固定装置
    • JP2003005558A
    • 2003-01-08
    • JP2001189900
    • 2001-06-22
    • Hitachi Ltd株式会社日立製作所
    • TSUNOHASHI TAKASHIHIRAOKA TSUTOMUKUMADA KATSUMINIWA KOICHIOGISO TOSHIO
    • G03G15/20F16C13/00
    • PROBLEM TO BE SOLVED: To provide a very reliable fixing device capable of maintaining the performance of a regulating blade over a long term and having excellent maintainability.
      SOLUTION: This fixing device is equipped with: a pair of heating roller 1 and pressure roller for fixing an unfixed toner image on a recording medium by making the recording medium on which the unfixed toner image is recorded pass through; an oil coating felt 7 for coating the heating roller 1 opposed to the toner image out of the pair of rollers with offset preventing liquid; and a regulating blade 8 for regulating the amount of the offset preventing liquid by abutting on the roller 1. In the fixing device, the surface layer of the roller 1 on which the blade 8 abuts consists of an elastic body whose JIS A hardness is ≤45, and the blade 8 consists of a blade being metallic base material 10. An edge 12 being the abutting part of the regulating blade 10 on the surface layer of the roller 1 is formed in a curved surface shape and the radius of the curved surface is 0.1 to 0.5 mm. A fluororesin layer, for example, a layer 12 consisting of the mixture of fluororesin and fluoro-rubber is provided a the tip part of the blade 8 including the curved surface.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:提供能够长期保持调节叶片的性能并且具有优异的维护性的非常可靠的固定装置。 解决方案:该固定装置配备有:一对加热辊1和加压辊,用于通过使记录有未定影调色剂图像的记录介质通过,将未定影的调色剂图像定影在记录介质上; 油涂层毡7,用于将与调色剂图像相对的加热辊1与偏移防止液体的辊对相对; 以及用于通过抵靠辊1来调节防偏移液量的调节刀片8.在定影装置中,刀片8所抵靠的辊1的表面层由JIS A硬度< = 45,并且刀片8由作为金属基材10的刀片组成。作为辊1的表面层上的调节刀片10的抵接部的边缘12形成为弯曲的表面形状,并且弯曲的 表面为0.1〜0.5mm。 氟树脂层,例如由氟树脂和氟橡胶的混合物构成的层12,设置有包括弯曲表面的刀片8的前端部。