Apparatus for replacing rolls of customer films in copying machines

US4919354A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Leonhard Huber · Glonn, DE
• Erich Nagel · Anzing, DE
• Bernd Payrhammer · Munich, DE
• Peter Lermann · Feldkirchen-Westerham, DE
• Helmut Treiber · Munich, DE
• Herbert Wilsch · Unterhaching, DE

Key dates

• Filing date: Oct 28, 1988
• Grant date: Apr 24, 1990
• Expiry date: Oct 28, 2008

Classification

• Technology area (CPC G): Physics
• CPC primary: G03B27/587
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photographic copying machine wherein the images of successive frames on a long roll of spliced-together exposed and developed customer films are copied while successive films are advanced stepwise from a supply reel on a first driven mandrel toward and is convoluted on a takeup reel on a second driven mandrel. The copying machine employs a third mandrel which can support a fresh roll in the plane of the roll on the first mandrel, and a fourth mandrel which can support an empty takeup reel in the plane of the rotating takeup reel. The leader of the fresh roll is located adjacent the film path ahead of the copying station and is automatically advanced into the range of an automatic attaching mechanism when the trailing end of the expiring roll has advanced beyond the copying station. The attaching mechanism secures the leader of the fresh roll to the core of the empty takeup reel, and the machine is then ready to make copies of frames forming part of the fresh roll. The filled takeup reel on the second mandrel is replaced with an empty takeup reel and a fresh roll is placed onto the first mandrel while the machine copies the frames of the roll which is supported by the third mandre…