Coating processes – Body member printing
Patent
1985-12-19
1987-11-24
Bell, Janyce A.
Coating processes
Body member printing
427145, 427157, 4274301, A61B 510
Patent
active
047088826
ABSTRACT:
In one aspect of the invention, the sample surface is wetted with an aqueous solution of a fluorescent dye followed by rinses with water to remove an excessive amount of the dye so that the background fluorescence emission can be minimized to increase the efficiency of fingerprint detection. In another aspect, the fluorescent dye or a reagent to produce fluorescent substance is deposited on the sample surface by attaching a gelatin film impregnated with a solution thereof followed by peeling. In a further different aspect, a powdery fluorescent dye is deposited on to the sample surface followed by spraying of water after removing an excessive amount of the powdery dye so that the background fluorescence can be minimized. The invention also provides an apparatus for the fingerprint detection by the laser beam excitation of fluorescence, which is compact and portable as being composed of an ingenious combination of several units into an integral system.
REFERENCES:
patent: 4226740 (1980-10-01), Worsham et al.
patent: 4303701 (1981-12-01), Torgensen et al.
Menzel, Identification News, International Ass. for Identification, vol. XXXIII, No. 9, Sep. 1983, pp. 7 and 11.
Asano Yuichiro
Kono Yoshihisa
Momose Atsushi
Moriya Susumu
Shiozumi Motoji
Bell Janyce A.
Kawasaki Steel Corporation
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