COROTRON WIRE END LOOPS
Original Publication Date: 1989-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
Corotron wires, used as the charging mechanism in xerographic copiers, have loops formed at the ends of the wires to allow the wires to be placed over the hooked ends of a spring or post. The usual method is to twist the wire ends to form the loop. An alternate method, reducing the wire fatigue, is to .hold the free end in tension while rotating a wrapping assembly. The wire is pulled from a spool through a ferrule to prevent abrasion to the wire. The free end is then brought around a mandrel the approximate size of the loop desired and held under tension by locking the spool. The assembly is turned in unison as the free end of the wire is held close to the mandrel to allow the wrapping of the free end around the wire unwinding from the spool, thus preventing a twisting action in the wires which would fatigue the wire at the junction and within the twisted portion. The free end of the wire is then severed as close as possible to the wrapping and the wire is pulled from the spool to the desired length and cut. If a loop is desired at the opposite end, the looped end is placed over a hook at the spool end of the device and the process is repeated, producing repeated exact lengths.