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    • 2. 发明申请
    • Fuser Assembly Including A Nip Release Mechanism
    • 定影装置包括一个释放机制
    • US20080181686A1
    • 2008-07-31
    • US11668635
    • 2007-01-30
    • Alexander J. GeylingMichael David Maul
    • Alexander J. GeylingMichael David Maul
    • G03G15/20
    • G03G15/2032
    • A fuser assembly is provided comprising first and second fuser structures, drive apparatus and nip engagement and release apparatus. The first fuser structure comprises a heated rotatable member and first structure for supporting the heated rotatable member. The second fuser structure comprises a rotatable backup member positioned adjacent the heated rotatable member and second structure for supporting the backup member. The rotatable backup member is adapted to define a nip with the heated member. The drive apparatus is associated with one of the heated rotatable member and the backup member for effecting rotation of the one member in a selected first direction or a second direction. The nip engagement and release apparatus comprises nip-loading structure adapted to apply a sufficient force to one of the first and second support structures to achieve a desired nip load in response to the one member rotating in the first direction and decreasing the force to the one support structure to decrease the load at the nip in response to the one member rotating in the second direction. The nip engagement and release apparatus applies and decreases the force without the use of a sensor feedback loop.
    • 提供一种定影器组件,包括第一和第二定影结构,驱动装置和压合接合和释放装置。 第一定影结构包括加热的可旋转构件和用于支撑加热的可旋转构件的第一结构。 第二定影结构包括邻近加热的可旋转构件定位的可旋转支撑构件和用于支撑支撑构件的第二结构。 可旋转的支撑构件适于与加热构件限定压区。 所述驱动装置与所述加热的可旋转构件和所述支撑构件中的一个相关联,用于在所选择的第一方向或第二方向上实现所述一个构件的旋转。 压区接合和释放装置包括夹持装载结构,其适于对第一和第二支撑结构中的一个施加足够的力,以响应于一个构件在第一方向上旋转并且将力减小到一个 支撑结构,以响应于沿着第二方向旋转的一个构件来减小辊隙处的负载。 压辊接合和释放装置在不使用传感器反馈回路的情况下施加和减小力。