Method of treating preformed flexible imaging belts to form ripple-free
and dimensionally precise belts
    8.
    发明授权
    Method of treating preformed flexible imaging belts to form ripple-free and dimensionally precise belts 失效
    处理预成型柔性成像带以形成无波纹和尺寸精确的带的方法

    公开(公告)号:US5885512A

    公开(公告)日:1999-03-23

    申请号:US941914

    申请日:1997-10-01

    摘要: A method of treating a preformed flexible imaging belt including providing a rigid cylindrical support drum having a precisely predetermined outer circumference, a first end and a second end, providing a preformed flexible electrostatographic imaging belt, circumferentially expanding the belt with a flowing fluid under pressure until the circumference of the inner surface of the belt adjacent the first end of the drum is stretched to a new dimension of at least about 0.1 percent greater than the outer circumference of the rigid support drum while maintaining the belt below the elastic limit of the belt to smooth out physical defects, sliding the belt onto the drum from the first end toward the second end until substantially all of the belt encircles the outer surface of the drum, terminating the flow of the flowing fluid to allow the belt to contract onto the outer surface of the support drum, heating the belt to a treatment temperature of between about the glass transition temperature and about 10.degree. C. above the glass transition temperature of the substrate or the imaging layer, the treatment temperature being the higher of these two glass transition temperatures, until the belt relaxes onto the outer circumference of the rigid drum and is substantially free of any tendency to contract back to the original circumference of the inner exposed surface prior to circumferentially expanding the belt, cooling the belt to ambient room temperature, and removing the belt from the drum, the belt having a new inner circumference substantially identical to the precisely predetermined outer circumference of the rigid cylindrical support drum.

    摘要翻译: 一种处理预成型的柔性成像带的方法,包括提供具有精确预定的外周的刚性圆柱形支撑滚筒,第一端和第二端,提供预成型的柔性静电成像带,在压力下使流体流体周向地膨胀带直到 与滚筒的第一端相邻的带的内表面的圆周被拉伸到比刚性支撑滚筒的外圆周大至少约0.1%的新尺寸,同时将带保持在带的弹性极限以下 平滑物理缺陷,将带从第一端向第二端滑动到鼓上,直到基本上所有的带环绕滚筒的外表面,终止流动流体的流动,以使带收缩到外表面 的支撑鼓,将带加热到约玻璃化转变温度之间的处理温度 并且高于基底或成像层的玻璃化转变温度约10℃,处理温度高于这两个玻璃化转变温度,直到带松弛到刚性滚筒的外圆周上并且基本上没有任何 在带周向膨胀之前收缩到内部暴露表面的原始圆周的趋势,将带冷却到环境室温,并且将带从滚筒中移除,带具有与精确预定外部基本相同的新内周 刚性圆柱形支撑滚筒的周长。

    Rapid electrostatographic belt treatment system
    10.
    发明授权
    Rapid electrostatographic belt treatment system 失效
    快速静电胶带处理系统

    公开(公告)号:US6056839A

    公开(公告)日:2000-05-02

    申请号:US4290

    申请日:1998-01-08

    摘要: A process for treating a seamed flexible electrostatographic imaging belt including providing an imaging belt including at least one imaging layer including a thermoplastic polymer matrix and a seam extending from one edge of the belt to the other, the seam having a region on the belt adjacent each side of the seam and also having an exposed surface on each side of the belt, supporting the belt with at least one vacuum holding device spaced from the seam while maintaining the seam and region of the belt adjacent each side of the seam in an arcuate shape having at least a substantially semicircular cross section having a radius of curvature of between about 9.5 millimeters and about 50 millimeters, heating the thermoplastic polymer matrix of the imaging layer in the seam and the region of the belt adjacent each side of the seam to at least the glass transition temperature (Tg) of the thermoplastic polymer matrix without significantly heating the support member, and contacting the exposed surface of the seam and regions on each side of the belt with a gas to rapidly cool the seam and regions on each side of the belt to a temperature below the glass transition temperature of the polymer matrix while maintaining the arcuate shape of the region of the belt adjacent each side of the seam. Apparatus for carrying out this process is also disclosed.

    摘要翻译: 一种用于处理缝合的柔性静电摄影成像带的方法,包括提供包括至少一个包含热塑性聚合物基体的成像层和从所述带的一个边缘延伸到另一个边缘的接缝的成像带,所述接缝具有与所述带相邻的带 并且还具有在带的每一侧上的暴露表面,用至少一个与接缝隔开的真空保持装置支撑带,同时将接缝和接缝的每一侧的区域保持为弧形形状 具有至少具有约9.5毫米至约50毫米的曲率半径的基本上半圆形的横截面,将接缝中的成像层的热塑性聚合物基体和邻近接缝的每一侧的带的区域加热至少 所述热塑性聚合物基体的玻璃化转变温度(Tg),而不显着加热所述支撑构件,并使所述暴露物接触 d表面和具有气体的带的每一侧的区域,以将带和每侧的区域快速冷却到低于聚合物基体的玻璃化转变温度的温度,同时保持该区域的弧形形状 皮带靠近接缝的每一侧。 还公开了用于执行该过程的装置。