A Non-Slip Sound Printer
C. N. Batsel · Journal of the Society of Motion Picture Engineers · 1934
The improvement of sound negatives and the extension of the frequency range- have made the printing of the sound negative onto the final print much more difficult. This paper deals with a printer that assures positive contact and no slipping between the two films at the time of printing. The principle upon which it operates is discussed, and improvements to be gained in making prints upon a machine of this type are shown.