We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
34 Transactions of S.M.P.E., Vol. XIII, No. 37, 1929
ent time is shown in Fig. 3 in which the notching practice of Bell and Howell, Duplex, Pathe, and the International Congress recommendation are shown together for the sake of comparison. There are in existence at present large quantities of negative which have been notched by three of these methods. The settlement of this question involves many considerations, not only the existing negative which is already notched, but also printer design, method of light control, etc. The committee feels that it is highly desirable to reach some definite agreement on this subject and a continued effort will be made to find some solution.
Rings for negative raw stock. This matter has been considered from different angles but no definite agreement has been reached. The matter is at the present time under discussion by various film and camera manufacturers. It seems quite probable that some definite agreement can be reached and it is therefore held open for further work.
35 mm. sprockets. An effort has been made to obtain from those manufacturers who are making sprockets not in conformity with our standards, a definite statement of their objections to our standards together with proposals for modification. Thus far, the committee has not been able to obtain this.
16 mm. Dimensions and Practice Safety film. It seems desirable that the Society formulate a definition of this term. The terms ' ' noninflammable, " ''slow burning," and ''safety" have been used in referring to the film base used in the manufacture of some 35 mm. and all substandard widths of motion picture film. The committee recommends that the term "safety film" be adopted in reference to this material. It does not seem possible to formulate a definition of this material in terms of its chemical constitution since widely different materials and combinations may be used for its manfacture. It does seem possible, however, to define the degree of inflammability in a way which should be very satisfactory as a practical test for differentiating between safety and non safety supports. The following definition is proposed :
The term "safety film" may be applied to any material, either uncoated support, support coated with emulsion, or the exposed and processed product, which has a turning time greater than fifteen