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    • 3. 发明申请
    • FIXING DEVICE AND IMAGE FORMING APPARATUS
    • 固定装置和图像形成装置
    • US20110142469A1
    • 2011-06-16
    • US12781285
    • 2010-05-17
    • Masaya NAKATSUHARAYuichi FukudaSho Watanabe
    • Masaya NAKATSUHARAYuichi FukudaSho Watanabe
    • G03G15/20
    • G03G15/2028G03G2215/2032
    • A fixing device includes: a fixing member that fixes a toner image on a recording medium; a pressure member that comes into pressure-contact with an outer peripheral surface of the fixing member and thereby forms a fixing pressure portion between the pressure member and the fixing member, the fixing pressure portion allowing the recording medium carrying an unfixed toner image to pass therethrough; a tension member that is arranged to face the pressure member with the fixing member interposed therebetween, and tensions the fixing member; a peeling member that is arranged at a position downstream of the fixing pressure portion in a recording medium transport direction and adjacent to the tension member, and peels the recording medium from the fixing member; and an exit guide member that guides the recording medium while keeping a temperature of the recording medium, after the recording medium passes through the fixing pressure portion.
    • 定影装置包括:固定构件,其将调色剂图像定影在记录介质上; 压力部件,其与所述固定部件的外周面压力接触,从而在所述压力部件与所述固定部件之间形成固定压力部,所述固定压力部使得承载未定影调色剂像的记录介质通过; ; 张紧构件,其布置成与所述压力构件对置,并且所述固定构件插入在所述压力构件之间,并且所述固定构件的张紧; 剥离构件,其被配置在记录介质传送方向上并与所述张紧构件相邻的所述定影压力部的下游位置,并从所述固定构件剥离所述记录介质; 以及在记录介质通过定影压力部分之后,在保持记录介质的温度的同时引导记录介质的出口引导构件。
    • 10. 发明授权
    • Transfer and fixing device having specific nip ratio
    • 具有特定辊隙比的转印和定影装置
    • US06226487B1
    • 2001-05-01
    • US09388357
    • 1999-09-01
    • Takayuki YamashitaTsukasa MatsudaYuichi FukudaTetsuo Yamada
    • Takayuki YamashitaTsukasa MatsudaYuichi FukudaTetsuo Yamada
    • G03G1516
    • G03G15/167G03G15/2064G03G2215/0119G03G2215/1685G03G2215/2074
    • The present invention provides an image forming apparatus which adopts a simultaneous transfer and fixing method and is capable of obtaining a high-grade image which has high luster, a favorable balance of color and an excellent transparency. In an image forming apparatus provided with a transfer and fixing device which includes a heating roller and a pressure roller for transferring and fixing a toner image on an intermediate transfer body to a recording medium, the transferring and fixing operation is carried out using the heating roller and the pressure roller under a condition that the ratio a/b between the length a of a nip region N of the heating roller and the pressure roller in a direction A at the central portion of these rollers extending in a roller axial direction and the length b of the nip region N in the direction A at both ends of these rollers extending in the roller axial direction is set to be more than 0.8.
    • 本发明提供了一种图像形成装置,其采用同时传送和固定方法,并且能够获得具有高光泽,良好的色彩平衡和优异的透明度的高级图像。 在设置有转印和定影装置的图像形成装置中,该转印和定影装置包括加热辊和用于将中间转印体上的调色剂图像转印和定影到记录介质的加压辊,转印和定影操作使用加热辊 加压辊的加压辊的辊压区域N的长度a与加压辊之间的比a / b在这些辊的中心部分沿辊轴方向延伸的长度和长度 在辊轴方向延伸的这些辊的两端的方向A上的辊隙区域N的b设定为大于0.8。