Accession Number : ADD009555

Title :   Photographic Image Enhancement by a Gold-Toning Neutron-Activation Process.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bond,Clarence D

Report Date : 06 Apr 1982

Pagination or Media Count : 4

Abstract : This document describes a gold-toning neutron-activation process for intensifying or amplifying the contrast in extremely weak images in photographic negatives where the exposure level may be as low as 1.5% of optimum. The method involves three main steps: gold toning of the silver image on the negative; neutron activation of the gold image to produce radioisotopes; and transfering the image to an unexposed autoradiogrpahic film as the ionizing radiation from the radioactive gold exposes the film to produce intensification of the contrast. (Author)

Descriptors :   *Patents, *Photographic images, *Image intensification, *Gold, *Toners, Neutron activation, Methodology, Photographic tone, Ionizing radiation, Silver, Radioactive isotopes, Photographic negatives, Inventions

Subject Categories : Printing and Graphic Arts

Distribution Statement : APPROVED FOR PUBLIC RELEASE