Toner taggant processes

Details Toner taggant processes Toner taggant processes

1991-10-24

1993-04-13

Housel, James C.

Chemistry: analytical and immunological testing

Tracers or tags

436164, 430 31, 430106, 430109, 430114, C01N 2175, C01N 3122, C01N 3326

Patent

active

052022650

ABSTRACT:
A process for the verification of toner compositions which comprises adding to the toner an alkali metal bicarbonate, and thereafter adding thereto an acid thereby causing the formation of effervescence.

REFERENCES:
patent: 4308327 (1981-12-01), Bird et al.
patent: 4543308 (1985-09-01), Schumann et al.
patent: 4728984 (1988-03-01), Daniele
patent: 4777510 (1988-10-01), Russel
Xerox Disclosure Journal, vol. 13, No. 4, Jul./Aug. 1988, "Copy Sheet and Weight Sensing", N. D. Robinson, Jr.

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