(under subclass 564) Subject matter with means for re-exposing the material with an initial latent image thereon.
(1) Note. This subclass includes means for exposing the material to diffused light after the material has been initially exposed, developed, but not fixed, to produce a positive image when again developed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
, FOR 924, for a foreign art collection involving reversal processing fluid-treating apparatus.
SEE OR SEARCH CLASS
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,
407, for reversal processing involving radiation imagery chemistry.
