9 ELECTROSTATIC, THERMAL, AND PHOTOGRAPHIC COPYING MACHINES AND ATTACHMENTS THEREFOR, NAMELY, AUTOMATIC DOCUMENT FEEDERS, SORTERS, COLLATORS, STAPLERS AND PHOTOCONDUCTOR CARTRIDGES; PHOTOGRAPHIC, CINEMATOGRAPHIC AND OPTICAL APPARATUS AND INSTRUMENTS, NAMELY, SCENIC PROJECTORS AND ENLARGERS; TELEPHONE FACSMILE EQUIPMENT AND ATTACHMENTS THEREFOR, NAMELY, AUTOMATIC DOCUMENT FEEDERS, DUAL PAPER CASSETTES, SORTING APPARATUS, AND MEMORY UNITS, SEMI-CONDUCTORS, AND PRINTERS AND PRINTER WHEELS