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The Influence Of Bromide And Polyethylene Oxide Upon Development Kinetics, Robert Durbin
The Influence Of Bromide And Polyethylene Oxide Upon Development Kinetics, Robert Durbin
Theses
It has been previously reported that the speed and contrast of a given film-developer combination is influenced by the addition of PEO to either the developer or to the emulsion. Factorial experiments were conducted upon Ag(Brl) and Ag(BrCl) films to determine the PEO development effects on hydroquinone and N-methyl-p-aminophenol developers of normal sulfite level. Various levels of exposure, bromide concentration, and PEO addition to the developer were employed to gain information about possible interactions as well as individual effects. Density-log time of development curves were obtained using the method of arrested development. Response variables were induction period and maximum rate …
Studies Of The Properties Of Poly (Ethylene Oxide) As A Substitute For Gum Arabic In The Fountain Solution, Orapan Chongpipatanasook
Studies Of The Properties Of Poly (Ethylene Oxide) As A Substitute For Gum Arabic In The Fountain Solution, Orapan Chongpipatanasook
Theses
Poly (ethylene oxide) is a polymer of ethylene oxide. It is one of the classes of synthetic water soluble resins which are commercially available. The properties of poly (ethylene oxide) as a desensitizer in the fountain solution were studied. The solution of this resin was compared to gum arabic solution. The investigation included the study of the physical properties of the solutions at different concentrations as well as press performance. Comparisons were made as to wettability, viscosity, surface tension, the ability to clean the plate, the resistance to scum, printing sharpness, resolution, and the plate-press characteristic curve. The experiments were …