Improving silver halide emulsions used for the direct writing of oscillographic traces is a topic not discussed openly in the technical literature. It has been previously thought that good contrast between image and background depends upon the extreme low-intensity reciprocity law failure of these emulsions combined with their ability to be desensitized by low-intensity light. Evidence presented in this report indicates that low-intensity reciprocity law failure is very desirable for the surface image; however, for the internal image, the most practical* of the three materials tested reveals no reciprocity law failure within the time interval from IO*2 to 10*6 seconds of xenon flash exposure.
Library of Congress Subject Headings
Photographic sensitometry; Photography--Processing
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
Geller, Joseph, "A latent image distribution study of "dry-writing" photo-recording materials" (1967). Thesis. Rochester Institute of Technology. Accessed from
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