公开(公告)号：US5070231A

公开(公告)日：1991-12-03

申请号：US600751

申请日：1990-10-18

申请人： Michael W. Bacus ,  Dick T. Price ,  Dale A. Lewis ,  Michael E. Demarchi ,  Karl L. C. Homa ,  Gary McInturff ,  Robert Gruell

发明人： Michael W. Bacus ,  Dick T. Price ,  Dale A. Lewis ,  Michael E. Demarchi ,  Karl L. C. Homa ,  Gary McInturff ,  Robert Gruell

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2042 ,  G03G15/206

摘要： A roll-fusing assembly for printing upon continuous length print stock of substantially different widths and thicknesses includes structure for compensating for differences in thermal expansion across the pressure roller when engaging differing print stock widths. In a preferred embodiment this includes stepped pressure roller sections of reduced diameters and a contacting heat transfer roller for normalizing surface temperatures across the width of the pressure roller. The disclosed method involves normalizing surface temperatures across the pressure roller to compensate for the differences in thermal expansion that will occur about the pressure roller exterior directly exposed to the heated fusing roller when handling relatively narrow continuous length print stock or stock of differing thicknesses.

摘要翻译： 用于在具有基本上不同的宽度和厚度的连续长度的印刷品上印刷的卷筒组件包括用于补偿当接合不同的印刷原稿宽度时跨压力辊的热膨胀差异的结构。 在一个优选实施例中，这包括减小直径的阶梯式压力辊部分和用于使压力辊宽度上的表面温度归一化的接触传热辊。 所公开的方法涉及使压力辊上的表面温度标准化，以补偿当处理相对狭窄的连续长度的印刷材料或不同厚度的原料时，在直接暴露于加热定影辊的压力辊外部将发生的热膨胀差异。

公开(公告)号：US07515012B2

公开(公告)日：2009-04-07

申请号：US11360307

申请日：2006-02-22

申请人： Joseph H. Schulman ,  Dale A. Lewis ,  Donald J. Hancock ,  Adam Vogel, legal representative

发明人： Martin J. Vogel

IPC分类号： H03G11/04 ,  A61N2/02 ,  A61N1/08

CPC分类号： A61N1/3787 ,  A61N1/37229 ,  H03J5/02 ,  H03J2200/10 ,  H03L5/02

摘要： An automatic tuning system for a magnetic field generating tuned circuit includes a processor configured to maintain the resonant frequency of a tuned circuit equal to a reference frequency. The tuned circuit is driven by a power amplifier whose output provides an amplified signal at the reference frequency. The tuned circuit includes a magnetic field generating inductor and a bank of individually switchable capacitors controlled by the processor capable of adding and removing the respective capacitances to and from the tuned circuit. The inductor includes a Faraday shield to shield the tuned circuit from the influence of electric fields. In an embodiment of the invention, the variable capacitor is in the form of a diode variable capacitor (varicap) in parallel circuit relationship with the tuned circuit capacitor and the inductor. In an alternate embodiment the inductor and a fixed capacitor are in series circuit relationship with the varicap in parallel circuit relationship with the fixed capacitor and the tuning sequence relies on a phase locked loop using the phase of a reference frequency signal and the phase of the inductor voltage as control parameters.

摘要翻译： 用于磁场产生调谐电路的自动调谐系统包括被配置为将调谐电路的谐振频率保持为等于参考频率的处理器。 调谐电路由功率放大器驱动，功率放大器的输出以参考频率提供放大信号。 调谐电路包括磁场产生电感器和由处理器控制的可分开开关电容器组，能够将调谐电路的相应电容加到和去除。 电感器包括法拉第屏蔽，用于屏蔽调谐电路免受电场的影响。 在本发明的一个实施例中，可变电容器是与调谐电路电容器和电感器并联电路的二极管可变电容器（变容二极管）的形式。 在替代实施例中，电感器和固定电容器与变容二极管的串联电路与固定电容器并联电路的关系，并且调谐序列依赖于使用参考频率信号的相位和电感的相位的锁相环 电压作为控制参数。