A new apparatus for automatic film processing.

Abstract

The problem of developing and fixing large numbers of X-ray films has become increasingly important in recent years. The continuing rise in cost of both labour and material alone justifies the installation of special apparatus if this, in handling the films, gives uniform processing and reduces the number of darkroom technicians. A general X-ray department is not, however, a factory, and to be capable of dealing with any films that require processing, such an apparatus must allow for considerable latitude in development time and the easy and early inspection of certain films. The unit to be described, which is really an experimental model, was constructed to my design by Keith Tools, of Slough, Bucks. I have deliberately excluded much of the detail of its working, since during the last few months we have, from the experience gained, designed what it is hoped will be an improved model. A diagram of the unit installed (Fig. 1) shows the general layout. It should be understood that it is while fixing that the films leave the darkroom proper and enter the viewing room. From this time on they are available for inspection. The tanks, made of black perspex, are constructed as one continuous unit, and films in processing move at a constant speed down the entire length of the apparatus. This is achieved by the use of two endless rubber belts which are located in shallow troughs at either side of the tanks (Fig. 2).