Microfilming system

Photocopying – Projection printing and copying cameras – Image transferred from individual documents to film strip

Patent

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Details

355 68, 355 74, 355 75, 355 76, G03B 2758, G03B 2764, G03B 2780

Patent

active

043244742

ABSTRACT:
A system for microfilming documents that employs microprocessor control to insure fault-free operation. The aspects of operation; such as document present, size of document, size of photographic mask, the exposure parameter, and system "ready", must meet necessary criteria, or the microprocessor will halt operations and present a human-readable response as to the cause.
Substitutional tables for supporting documents are available, to relate to the characteristics of the document.
Simultaneous conflicting commands are executed sequentially according to a priority sequence.

REFERENCES:
patent: 2881658 (1959-04-01), Bornemann
patent: 3601487 (1971-08-01), Burton et al.
patent: 3767302 (1973-10-01), Roberts et al.
patent: 3988062 (1976-10-01), Burton et al.
patent: 4087179 (1978-05-01), Conkerton
patent: 4135810 (1979-01-01), Walter
patent: 4148579 (1979-04-01), Axelrod et al.
patent: 4208123 (1980-06-01), Stevenson
patent: 4218133 (1980-08-01), Biedermann
Envision Microsystems, Inc., "Microcopy 800".

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