Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Fig. 8. The Askania projector A.P. 12, showing multi-drive mechanism. conical diaphragm which provides 30% more illumination than can be attained with drum diaphragms and 14% more than can be attained with disk diaphragms. Askania has announced that it is about to bring out a less expensive model of the A.P. 12.4 Eugen Bauer, Stuttgart-Canstatt, is now producing a new projector, the B12. Frieseke & Hoepfner, of ErlangenBruck, has the F.H.66 projector, of which an inexpensive model, the F.H.77, was put on the market at the end of the year. Zeiss-Ikon, at its new plant in KirlWik, has brought out a new highperformance projector, the Ernemann X, distinguished by a special watercooling system and a double blower. One of its unusual features is the vertical driving motor axis.6 Color 1952 was notable for an increased effort on the part of processing laboratories to achieve satisfactory processing of multi-emulsion films. Color film was produced on a large scale by Agfa ai Leverkusen, and color film made by the Agfa color process is now increasingly seen in German theaters. Gevacolor, high-quality negative and positive color films manufactured by the Belgium firm of Gevaert, are also in regular use in Germany. The colorfilm developing machine, illustrated in Fig. 9, is specially designed by the firm of Arnold & Richter for processing Agfa color and Gevacolor positive and negative film. This machine can handle approximately 500 meters/hour. All film spools are constructed of special plastic material that is photochemically constant. The film-drive mechanism can be smoothly regulated to the desired speed. The tanks are constructed of plastic material (Vinidur) that is photochemically constant and has good heatinsulating quality. In each chemical bath, provision is made for the liquid to be sprayed against the film's surface. George R. Groves: Progress Report Addendum 685