Xidex Corporation

Saul W Chaikin

Method and media for producing a vesicular image suitable for use in the recordation of microform information on an add-on basis. A vesicular film (imaging film) is exposed to actinic radiation to form a latent nitrogen gas image therein. The exposed vesicular imaging film, while still containing the latent image is contacted with a sensitizer-free vesicular film vehicle (receiving film). Sufficient heat and pressure are applied to cause an image-forming amount of nitrogen gas to be transferred from the imaging film to the receiving film. Conditions are selected so that vesiculation does not occur in either the imaging or receiving film up to and including the time of gas transfer. Thereafter, the receiving film is subjected to sufficient heat to develop a vesicular image from the transferred gas.

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Menlo Park, CA, United States of America

Saul W Chaikin