.~.~ With scanning, sweeping, or moving detector over film
DEFINITION
Classification: 356/444
With scanning, sweeping, or moving detector over film:
(under subclass 443) Subject matter wherein directed light transmitted through the sheet, strip, or other translucent solid medium is moved in a predetermined manner either by electronic means or by mechanically moving optical means; or wherein the sheet, strip, or other solid medium is moved past the light source; or wherein the photoelectric means is moved selectively about the surface of the film sheet, strip, or medium in order to obtain the intensity of the light transmitted at a plurality of locations through the film sheet, strip, or other solid medium.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386, and 387, for width detection and measurement of indeterminate length webs where one or a plurality of detection units are involved, and where mechanical or electronic motivated light beams may be transmitted through or reflected from a solid medium into the detection units.
429+, for apparatus which monitors moving webs of the translucent, transparent, or opaque type.
SEE OR SEARCH CLASS
250, Radiant Energy,
555+, and 566+ for photoelectric apparatus to detect records such as photos:graphic film; and subclasses 336.1+, especially subclasses 359.1 and 360.1, for methods and apparatus to inspect relatively moving objects with respect to invisible radiant energy with a radiation responsive electric signalling device.
358, Facsimile, 474+, and 500+ for optical devices of the facsimile type which utilize flying spot scanner light beams for transmission through a film or films for the purpose of detecting the optical density for reproducing a facsimile type picture.
396, Photography,
567+, for fluid-treating apparatus which includes a photocell for performing an optical density check on the film being processed, and means for controlling the apparatus.
