B - Operations – Transporting – 41 – B
Patent
B - Operations, Transporting
41
B
95/16, 95/24
B41B 19/00 (2006.01) B41B 17/10 (2006.01)
Patent
CA 1047295
ABSTRACT OF THE DISCLOSURE The present invention is directed to a photocompo- sing machine and method in which characters of several differ- ent type styles are arranged in concentric rows on a continu- ously spinning character matrix disc. The disc is mounted on a carriage which is movable relative to a stationary photo- graphic film sheet, and a carriage supporting several projec- tion lenses is releasably secured to the disc carriage. A flash lamp also is secured to the disc carriage in a position to flash light through the disc, through one of the lenses, and onto a sheet of photographic film which is located very near the lenses. Characters are composed in lines on the film by first locking the lens and disc carriages together, and mov- ing the combination of those elements and the flash lamp, as a unit, across the film while selectively flashing the lamp to project character images onto the film. Each of the lenses magnifies the image it receives by a different factor and thus produces characters of a different size on the film. The lenses are arranged in a linear array in a holder releasably secured to the lens carriage. The lenses are relatively small and in- expensive and the optical system is simple and compact because the focal lengths and apertures of the lenses are small. Furthermore, all of the character images are transmitted pri- marily through the lenses in the direction of the axis so as to maintain high quality images and type composition. The lenses and mounting means are relatively lightweight and thus can be moved relatively easily in order to maintain the opera- ting speed of the machine at a high level.
236781
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