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.
638 Transactions of S.M.P.E., Vol XI, No. 32, 1927
tinuous one. The film is wound outside of the drying chamber on reels, and I observed that some of the reels wound up round and true, while others wound up octagonally. The differences may be due to variations in the drying conditions in the chamber. When a strip of about six feet of this octagonally wound film is held up vertically, it twists in a spiral, while that wound smooth and true hangs straight and also has a tendency to be convex on the gelatin side. The other has a tendency to be concave on the gelatin side. When scenes from such films are spliced together, there is certain to be a difference relative to the focal plane of the print when it passes through the gate. I believe this to be one of the chief causes of the trouble. The difference in density referred to may result in a variation of heat transfer, but it is difficult to see how that would seriously affect the screen images. The chief difficulty is due, perhaps, to some errors in processing the film.
Mr. Townsend: There is a reel manufacturer in Rochester who asked me what I considered would be a good reel, and I told him. He then manufactured a good reel to sell for twenty-five cents. I heard nothing further about it for about five years. About a year ago he gave me a reel with a hub more than 1/16" larger diameter than it should have been. I told the representative, 'T don't see why you put out such things," and he said: "We tried to put out a decent reel and the trade wouldn't pay for it; they wanted one for eleven cents." When an expensive roll of film is put on such a reel and the hole is so large that the film slips around on it when rewinding, there is likely to be a slash cut in the hand. We have an average of two cut fingers a week in our screening room, where two men put film in condition for the screen. I don't see how an exchange can expect a projectionist to take care of film, when there is a constant danger of getting a cut hand and possible infection. It gives the man an impulse to throw aw|iy the reel including the film.
The buckling has been of concern to me for some time. Three distinct kinds of buckling have been mentioned. I think some one should work along lines to eliminate each one of the three. In the projection of brand new film or any film, the density determines the amount of heat absorbed. The denser the film, the more it will cup away from the projection lens and towards the light. A title buckles so much in a Simplex that it rubs against the aperture plate and causes a scratch. On examination we can find what projector the film has been through. There is another type of buckling