Accession Number : AD0266747


Title :   STUDY OF REUSABLE PHOTOSENSITIVE ELECTRON RECORDING MEDIA


Descriptive Note : Interim eingineering rept. no. 2, 15 Jul-14 Oct 61


Corporate Author : ITT FEDERAL LABS SAN FERNANDO CA


Personal Author(s) : HALL, F F JR ; ASAM, A R


Report Date : 06 Nov 1961


Pagination or Media Count : 62


Abstract : An optical image recording film is developed capable of reuse through 100 cycles of exposure, and able to resolve 100 lines per millimeter with speed equivalent to ASA 10. Photodielectric (PD) eff cts in CdSe:Cu are interpreted as due to photoconduction and carrier trapping. Vacuum annealing activated powders enhanced PD response by a factor of two over earlier results. The deformation of thermoplastic film using the PD effect is analyzed, and curves predicting contrast versus exposure illuminance are presented for phase contrast readout. This readout method is capable of reproducing gray scales with omnidirectional resolution near program requirements. The status of tests on various plastics is reported, with the tentative conclusion that a low molecular weight polystyrene resin (Dow Ps-2) is most suitable. The first photodielectrically deformed picture of a course bar pattern is reported using CdSe:Cu powder dispersed in carnauba wax. (Author)


Descriptors :   *ELECTRONIC RECORDING SYSTEMS , *PHOTOSENSITIVITY , *PLASTICS , *SALVAGE , CRYSTAL STRUCTURE , DEFORMATION , DIELECTRIC FILMS , DIELECTRICS , EQUATIONS , EXPERIMENTAL DATA , HEATING , IMPURITIES , INSTRUMENTATION , INTERMETALLIC COMPOUNDS , OPTICAL IMAGES , ORGANIC COMPOUNDS , PHOTOCONDUCTIVITY , PHOTOELECTRIC EFFECT , PHOTOGRAPHIC ANALYSIS , PHOTOGRAPHIC RECORDING SYSTEMS , PHYSICAL PROPERTIES , SINTERING , VACUUM APPARATUS , X RAY DIFFRACTION


Distribution Statement : APPROVED FOR PUBLIC RELEASE