(under subclass 1) Subject matter in which details of the internal structure of a holos:graphic recording medium is defined either physically or chemically.
(1) Note. An example of such a physical definition: "a multilayer emulsion, each layer being sensitive to a different color". A chemical defintion: "thermoplastic tape".
SEE OR SEARCH CLASS
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,
1, for holos:graphic processes involving significant chemical processing steps composition or product; and appropriate subclasses for radiation chemical recording media, per se.
