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Mtf And Adjacency Effects Of Vesicular Film, Timothy Sewell, Paul Willig
Mtf And Adjacency Effects Of Vesicular Film, Timothy Sewell, Paul Willig
Theses
The Modulation Transfer Function and adjacency effects are important measurements of a photographic material. For vesicular film it is of interest to investigate the MTF and adjacency effects with relation to the three variable parameters, development temperature, exposure and development time. This investigation clearly shows that adjacency effects do occur in vesicular film, and that exposure and development temperature are important factors in determinating the film MTF.
Copper Physical Development Of Copper Latent Images, Gregg Tashker, Peter Schreiber
Copper Physical Development Of Copper Latent Images, Gregg Tashker, Peter Schreiber
Theses
Copper physical development of copper latent images was researched. The proposed method for producing copper latent images was to soak a titanium dioxide in a copper (II) sulfate nucleating bath and expose to UV radiation below 4l0nm. The exposures were to produce the copper latent image. Three physical developers were used to try to intensify the latent images. The developers utilize an iron (II)/iron (III) redox system to reduce copper (II) sulfate to copper metal. The developers also contain carboxylic acids as complexing agents for iron (III) ions and cationic surfactants for stability. The printout achieved was not stable and …