Practical problems in processing control.

Abstract

In most photographic installations, some method of regulation is necessary to maintain day-to-day control of developing and fixing and to keep the variations between processing units to a minimum. The problem is complicated when the processors include various models by different manufacturers. Currently at the Henry Ford Hospital, one cine processor and seven automatic film processors are used. These include five different models: seven-minute, three-and-one-half-minute, three-minute, and ninety-second units. Both an RP (rapid processing) automatic processor and a standard speed unit are employed to develop gastrointestinal studies produced on RP film, so these processors must be co-ordinated. The three-and-one-half-minute and the seven-minute processors are used for the remaining diagnostic radiological work, except for special films, such as single-coated and industrial, which are processed in the seven-minute unit. The developing processes of these machines must also be co-ordinated. Initially, process...