.~.~> With scanning, sweeping, or moving detector over film
DEFINITION
Classification: 356/443
Of photos:graphic film:
(under subclass 432) Subject matter wherein structure is provided to transmit light through a sheet, strip, or other translucent solid medium of a photos:graphic nature, with provision to position the medium so that the light is transmitted either through all or selected portions of the medium, together with means to visually or photoelectrically determine the intensity of the transmitted light.
(1) Note. Included in this subclass are photoelectric apparatus and visual apparatus which permit the visual comparison of the intensity of the light transmitted through a photos:graphic negative with brightness standards or with light sources whose intensity can be varied in a calibrated manner by means of variable apertures or light attenuating mediums or with variable light sources.
(2) Note. For photos:graphic enlargers of the light projection type, see Class 355, Photocopying. The apparatus of these subclasses 443+ when claimed in combination with the structure of such an enlarger or when claimed as controlling the light of such an enlarger is classified in Class 355, Photocopying, subclasses 67+.
(3) Note. For printers of the contact type, see Class 355, Photocopying, subclasses 78+; and for processes of this type which involve the exposure of a visible light sensitive medium or use of developed negative, see Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof. If as claimed the apparatus of subclasses 443+ is combined with a contact-type printer apparatus, or controls the exposing light of a contact printer, classification is in Class 396. For methods which involve the comparison of optical densities of the type found in subclasses 443+ in combination with an exposure of a visible light sensitive film, see particularly Class 96, subclasses 27+.
(4) Note. The photometers which analyze the spectrographs such as formed by the instruments of subclasses 302+ of this class are classified in these subclasses 443+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
51, for instruments responsive to infrared or ultraviolet and visible radiation being transmitted through a translucent solid medium in combination with means to measure the intensity of the light transmitted through the medium. 220, for photoelectric apparatus to measure logarithmically the intensity of light at some specific location.
243.1+, for light density standards, per se.
244, for specimen or standard supports for passing light through a solid.
404, for examination of the color properties of photos:graphic negatives.
405, for photos:graphic printing apparatus of the color type which includes color correction whereby light of at least three different colors is transmitted through a developed negative and the intensities of the various colors necessary to make a duplicate of the negative.
SEE OR SEARCH CLASS
355, Photocopying,
67+, for photos:graphic enlargers of the projection type with apparatus to measure the minimum and maximum optical densities of the developed negative from which copies are to be made. See also (2) Note above and subclasses 78+ for
printers of the contact type. See (3) Note above.
396, Photography,
213+, for actinometer with camera, and subclass 563 for making of optical wedges by exposing photos:graphic material.
