MEANS FOR PRODUCING AN IMAGE DISPLAY OF THE DISTRIBUTION OF THE MOISTURE DETECTED BY THE SWEATING GLANDS ON THE SKIN.

摘要

Method and apparatus for recording sweat gland activity which provides a pictorial representation thereof by physical contact of an iodide treated skin area with a dry sensitized substrate. In one preferred embodiment, the sensitized substrate comprises a sheet material which has been coated with an aqueous solution containing from 1 to 10 percent by weight of starch and from 2 to 10 percent by weight of a suitable oxidizing agent such as potassium persulfate. Alternately, the dry sensitized substrate comprises a starch-oxidizing agent mixture which has been impregnated into an absorbent base layer. With slight modification of the foregoing embodiment, the present invention also provides a method and apparatus for obtaining inkless fingerprints by forming a sensitized coating in situ on a substrate. For fingerprinting purposes, the sensitized coating is preferably formed from a quick drying starch-oxidizing agent solution including alcohol as a solvent. Accordingly, an aqueous iodide solution is applied to the skin area, and the treated skin area is subsequently contacted with the dry sensitized coating to produce the fingerprint.