DRAG ASSEMBLY FOR TAKE-UP ROLL

Publishing Venue

Xerox Disclosure Journal

Abstract

A fuser cleaner uses a web which is indexed, after a selected number of copies, rom a supply roll to a take-up roll. The web is maintained under tension at all times. This is achieved by mounting the shaft of the supply roll on a drag assembly. The drag assembly includes a cylinder having one end closed, mounted on the machine frame. An interiorly positioned, centrally located cylindrical support shaft extends from the closed of.the cylinder toward the open end thereof. The outer wall of the support shaft is spaced from the interior wall of the cylinder. A coil spring is mounted on the support shaft. The spring has one end thereof abutting the closed end of the cylinder. A flanged, cylindrical washer is mounted in the other end of the coil spring. A plunger is mounted on the washer with a central shaft passing through the opening in the washer into the opening in the support shaft. A portion of the plunger rests on the washer and has a cylindrical wall extending toward the closed end of the cylinder around the washer and outer diameter of the coil spring. The end of the plunger, in the region of the open end of the cylinder, has a mounting adapted to mate with a corresponding mounting on the end of the supply roll shaft.

(EROX DISCLOSURE JOURNAL

DRAG ASSEMBLY FOR TAKE-UP ROLL Proposed Classification Frederick K. Witt U.S. c1.35513

Int. C1. G03g 15/00

A fuser cleaner uses a web which is indexed, after a selected number of copies, rom a supply roll to a take-up roll. The web is maintained under tension at all times. This is achieved by mounting the shaft of the supply roll on a drag assembly. The drag assembly includes a cylinder having one end closed, mounted on the machine frame. An interiorly positioned, centrally located cylindrical support shaft extends from the closed of.the cylinder toward the open end thereof. The outer wall of the support shaft is spaced from the interior wall of the cylinder. A coil spring is mounted on the support shaft. The spring has one end thereof abutting the closed end of the cylinder. A flanged, cylindrical washer is mounted in the other end of the coil spring. A plunger is mounted on the washer with a central shaft passing through the opening in the washer into the opening in the support shaft. A portion of the plunger rests on the washer and has a cylindrical wall extending toward the closed end of the cylinder around the washer and outer diameter of the coil spring. The end of the plunger, in the region of the open end of the cylinder, has a mounting adapted to mate with a corresponding mounting on the end of the supply roll shaft.

Volume 13 Number 5 September/October 1988 245