Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1988-08-04
1990-01-30
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428292, 428294, 428375, 428704, 428908, 428915, 428916, 428690, 283 85, 283904, B05D 302
Patent
active
048973009
ABSTRACT:
The invention relates to a security paper having a security thread embedded therein, running from edge to edge, that is printed with luminescent colors in such a way that they are invisible in normal lighting. The luminescent colors are provided along the security thread in successive overlapping portions which, when the colors are excited, have a length recognizable to the naked eye and show characteristic mixed fluorescences in the overlapping areas.
REFERENCES:
patent: 4183989 (1980-01-01), Tooth
patent: 4442170 (1984-04-01), Kaule et al.
patent: 4451521 (1984-05-01), Kaule et al.
patent: 4451530 (1984-05-01), Kaule et al.
patent: 4452843 (1984-06-01), Kaule et al.
patent: 4756557 (1988-07-01), Kaule et al.
CA 110 (2): 9979y, Osada et al, 2-4-87.
GAO Gesellschaft fuer Automation und Organisation mbH
Robinson Ellis P.
Ryan P. J.
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