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    • 10. 发明授权
    • Rolled paper feeding apparatus which provides a constant torque for
uncurling paper and a torque limiting device therefor
    • 为纸张提供恒定转矩的卷纸供给装置及其扭矩限制装置
    • US5884860A
    • 1999-03-23
    • US753767
    • 1996-11-29
    • Kazumasa IshikawaAkihiro Fujita
    • Kazumasa IshikawaAkihiro Fujita
    • B65H23/06B65H23/34
    • B65H23/34B65H23/06
    • An image forming apparatus which uses rolled paper pulls the paper around a decurling roller in order to straighten the paper to allow the paper to remain flat. One or more torque limiting devices which provides a constant angular force against the unrolling of the paper is utilized to provide a force which straightens out or decurls the rolled paper which increases as the radius of the roll of paper decreases. The torque limiting device can be implemented using a spring which grips a rotating cylindrical surface as the surface rotates, a viscous-elastic fluid which provides a resistance against rotation, frictional surfaces, or magnets. The torque limiting device may also be implemented using two springs which provide different resistance against rotation in order to provide different rotational resistance, depending on the direction the roll of paper is rotating.
    • 使用卷纸的图像形成装置将纸卷绕在卷曲消除辊周围,以使纸张拉直以允许纸保持平坦。 利用一个或多个扭矩限制装置,其提供抵抗纸张展开的恒定角力,以提供拉伸或折叠卷纸的力,随着纸张的半径减小,卷纸被增加。 扭矩限制装置可以使用当表面旋转时握住旋转的圆柱形表面的弹簧来实现,提供抵抗旋转的阻力弹性流体,摩擦表面或磁体。 转矩限制装置还可以使用两个弹簧来实现,这两个弹簧提供不同的抗旋转阻力,以便根据纸张旋转的方向提供不同的旋转阻力。