US Patent 7261790 Master processing apparatus

A removable cartridge assembly for a master processing apparatus includes a cartridge body and a pair of feed roll assemblies. Each feed roll assembly includes a stock material wound about a core and mounting members on the ends of the core. Feed roll mounting structures removably secure the feed roll assemblies on the cartridge body so that, for example, a feed roll assembly from which the supply of stock material has been exhausted can be removed and replaced.