Abstract: A cable tensioning system for use in an electrostatic transfer apparatus is provided to permit a developed image to be transferred from a first surface to a second receiving surface so that the dimensional integrity of the transferred image is ensured. The cable tensioning system is connected to a web or belt material that receives the transferred image as an intermediate transfer surface by a transfer roller traversing the length of the web bringing one surface of the web into close proximity with the developed image to permit it to be transferred to the web. The tensioning system prevents the web from becoming slack.

Abstract: The overload protection material of this invention comprises a plastic preferably an elastomer, e.g. silicone rubber, homogeneously and highly loaded with silicon carbide particles (powder) and a lesser amount of a Group IV B element-carbide particles (powder). The material is preferably form stable and is placed (across) a semiconductor junction or between electrodes of a device to be protected so that when high voltage surges appear across the junction or device to be protected the material breaks down (conducts) before the junction or device is destroyed. The material is bidirectionally conductive in its voltage threshold characteristic and repeatedly recovers unlike a fuse so that it provides continuous high voltage over-voltage (e.g. surge) protection.