Accession Number : AD0801557

Title :   RESEARCH ON DIRECT ELECTRON BEAM FILM SCANNING TECHNIQUES. PHASE I.

Descriptive Note : Interim rept. 1 May-31 Oct 66.

Corporate Author : AMPEX CORP REDWOOD CITY CA

Personal Author(s) : Herbert, John

Report Date : 31 OCT 1966

Pagination or Media Count : 70

Abstract : This interim report discusses the investigation of the feasibility of an air-vacuum interface which permits direct electron beam scanning of a five-inch coated photographic film moving through the interface at approximately two ips. The technical problems posed by such a device are reviewed and possible solutions examined. A patent and literature survey of current progress in vacuum and electron beam technology is presented. The feasibility of developing an air-vacuum interface is studied in detail and conductance and air flow computations reviewed. The construction and performance of four experimental vacuum sealing schemes are presented and critically analyzed. Recommendations for further study are submitted. (Author)

Descriptors :   *ELECTRONIC SCANNERS), (*AERIAL PHOTOGRAPHS, ELECTRON BEAMS, FILM TRANSPORT SYSTEMS, AIRBORNE, PHOTOGRAPHIC RECONNAISSANCE, VACUUM APPARATUS, VACUUM SEALS, PHOTOGRAPHIC PROCESSING EQUIPMENT, VACUUM PUMPS, FEASIBILITY STUDIES, PHOTOGRAPHIC FILM, ELECTROMAGNETIC PULSES, HIGH FREQUENCY.

Subject Categories : Cartography and Aerial Photography
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE