Security features in paper

Details Security features in paper Security features in paper

1984-06-13

1985-11-12

Chin, Peter

Paper making and fiber liberation

Processes and products

Including solid non-waterlaid preform

162110, 162134, 162140, D21D 300, D21H 510

Patent

active

045526176

ABSTRACT:
Security features for authentification of currency paper are incorporated within the paper during the paper making process. Various codes are incorporated within the paper for viewing by means of transmitted light. In one embodiment the identifying indicia is microprinted on thin strips of a carrier material which dissolves during the dewatering and drying stage of the paper making process. The microprinted indicia remains intact and is readable by means of transmitted light yet is neither legible nor reproductible with reflected light.

REFERENCES:
patent: 4061468 (1977-12-01), Lange et al.
patent: 4437935 (1984-03-01), Crane

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