title: Automatic processing: effects of temperature and time changes on the sensitometric properties of light-sensitive films.
abstract: The effects of changes in the processing temperature and time of automatic processors were studied with three light-sensitive Kodak films: (1) blue-sensitive X-Omat RP film, (2) green-sensitive T-Mat G film, and (3) ultraviolet-sensitive X-Omat duplicating film. Speed and inherent contrast were derived for each of the three films from sensitometric curves at six different temperatures and at five different processing times. The T-Mat G film (T-grain technology) was comparatively less sensitive than conventional films (X-Omat RP) to increases in processing temperature or time. Unlike dental intraoral films, which cannot be processed at low processing time or temperature, the light-sensitive films were of archival storage quality even at a low processing time of 2.5 minutes or at a low processing temperature of 21 degrees C. Therefore the processing time of an automatic processor may be decreased for light-sensitive films.
authors.affiliation: Department of Oral Diagnosis, Medicine, Radiology, Louisiana State University School of Dentistry, New Orleans.
authors.forename: K H
authors.initials: KH
authors.lastname: Thunthy
authors.forename: K
authors.initials: K
authors.lastname: Hashimoto
authors.forename: R
authors.initials: R
authors.lastname: Weinberg
mesh_terms: D002614:Chelating Agents / Q000737:chemistry; D003199:Computer Systems; D003720:Densitometry; D004867:Equipment Design; D016014:Linear Models; D015999:Multivariate Analysis; D011856:Radiographic Image Enhancement / Q000379:methods; D011861:Radiography, Dental / Q000295:instrumentation / Q000379:methods*; D013696:Temperature; D013885:Thiosulfates / Q000737:chemistry; D013997:Time Factors; D014962:X-Ray Film; D014963:X-Ray Intensifying Screens
chemical_list: D002614:Chelating Agents; D013885:Thiosulfates; C017717:sodium thiosulfate