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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 …
An Evaluation Of The Primary Factors Which Influence Proportionality Failure, Daniel Levine
An Evaluation Of The Primary Factors Which Influence Proportionality Failure, Daniel Levine
Theses
If practical colorants could be found to meet theoretical requirements then there would be no need for color correction in multi-color printing. Color correction is necessary because the available yellow, magenta, and cyan inks absorb and transmit in all parts of the visible spectrum. It is possible to measure how much these colorants deviate from the ideal with the use of a reflection densitometer. The red, green, and blue filter positions on a densitometer will read the cyan, magenta, and yellow densities respectively. From these densities the amount of color correction necessary to compensate for the inks deficiencies is expressed …
Redesign Of The Rms Granularity Meter, Robert Bathgate, Filippo Ferrauto
Redesign Of The Rms Granularity Meter, Robert Bathgate, Filippo Ferrauto
Theses
A device for measuring RMS granularity of uniformly exposed and uniformly processed photographic material was built. This paper deals with the construction of the major components of the system. The components constructed were the lamp mount, lamp housing, current regulated ripple free power supply for the lamp, the replacement of the motor drive system for the sample stage with a synchronous motor, and the construction of the photo detection system. All these components were mounted on a triangular optical bench around an existing symetrical design microdensitometer with rotating sample stage.
An Approach To Tone Reproduction For Converting Transparencies To Reflection Prints, Mark Mccormick-Goodhart, Andrew Macica
An Approach To Tone Reproduction For Converting Transparencies To Reflection Prints, Mark Mccormick-Goodhart, Andrew Macica
Theses
The purpose of this investigation was to study the useful criteria for converting transparencies to reflection prints, and examine the unavoidable departures from the criteria. A single useful criterion was found; that the relative brightness of the reproduction match those of the original. One significant compromise appeared to be in the shadow reproduction in low maximum density reflection prints. It was found that like reflection prints, transparencies do not typically reach relative brightnesses as low as zero. Thus, only a relatively small departure from the 1:1 criterion was likely . Flare in the camera system and viewing conditions limits the …