Microfilm indexing machine

摘要

A microfilm indexing machine for automatically generating an index for a roll of microfilm. The indexing machine can be utilized in combination with either a microfilmer equipped with blip or image count capability to generate an index while the microfilm is being created, or with a microfilm reader to generate an index for an existing roll of microfilm. The indexing machine is a microprocessor based unit that is programmed to respond to the count signals produced by the image marker on a microfilmer or the blip sensors on a microfilm reader. The microprocessor is programmed to process the count signals and automatically update the contents of one or more counters. Document identifications are made via a keyboard and are printed on a paper tape. Upon receipt of the next count signals following the entry of a document identification, the microprocessor is further programmed to print adjacent the identification information the contents of the counter(s) which corresponds to the address location of the identified document on the roll of microfilm. When the index for the entire roll has been completed, the paper tape is removed and preferably microfilmed and spliced to the beginning of the corresponding roll of microfilm.