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Tone Reproduction Of Small-Scale Images Using Lithographic Film Under Infectious And Noninfectious Developmental Conditions, Julian Lopez
Tone Reproduction Of Small-Scale Images Using Lithographic Film Under Infectious And Noninfectious Developmental Conditions, Julian Lopez
Theses
The tone reproduction curve of small-scale images on KODALITH film developed with KODALITH Super Developer were obtained by microdensitometry using a sinusoidal target of 64 percent modulation as a sensitometric tablet to produce images at spatial frequencies corresponding to screen rulings of 9 to 375 lines/inch. A similar series of exposures was processed with addition of sulfite to the developer to give essentially noninfectious development. Speed and contrast with KODALITH developer increased with spatial frequency; speed increased continuously by a small factor and contrast passed through a maximum (80 percent greater than for large area image) at a spatial frequency …
Comparison Of The Development Characteristics Of A Sodium Thiosulfate Monobath With That Of A Mercaptoacetic Acid Monobath, Richard Smith
Comparison Of The Development Characteristics Of A Sodium Thiosulfate Monobath With That Of A Mercaptoacetic Acid Monobath, Richard Smith
Theses
The development characteristics of mercaptoacetic acid monobaths were compared with those of sodium thiosulfate monobaths at varying fixing-agent concentrations. The following differences were noted: (1) it required four times more moles-per-liter of sodium thiosulfate than metcaptoacetic acid to obtain the same rate of fixation; (2) the mercaptoacetic acid monobath produced less silver than the sodium thiosulfate; (3) KODAK Panatomic-X Film developed in a mercaptoacetic acid monobath had a covering power greater than or equal to that produced by development in the same phenidone-hydroquinone developer without any fixing agent, whereas the covering power of the sodium thiosulfate monobath was less; (4) …