Process for preparing polymeric security articles
AssigneeKoenig & Bauer Banknote Solutions SA
InventorsMichael Blesovsky, Johannes Schaede, Robert Stewart
Life of this patent
Estimating the term…
Abstract
There is described a method of manufacturing a security article, said method comprising the steps of: introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose; and disposing printed information on at least a portion of said transparent film by an offset printing step, wherein said transparent film introduced into said offset printing device further comprises an ink-receptive layer on at least one surface of said substrate layer.
Claims16
A method of manufacturing a banknote, said method comprising the steps of:
- a. introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose, wherein the transparent film is devoid of watermarks or other security features and wherein the regenerated cellulose is not regenerated cellulose which has been chemically modified;
- b. disposing printed information on at least a portion of said transparent film by an offset printing step, and
- c. after step (b), disposing one or more security feature(s) on one or both surfaces of the transparent film, wherein the one or more security feature(s) comprise at least one of a printed signature or serial number, optical security feature(s), and printed features comprising optically variable ink, magnetic ink and/or fluorescent ink;
- wherein said transparent film introduced into said offset printing device further comprises an ink-receptive layer on at least one surface of said substrate layer and wherein said transparent film is devoid of light-sensitive additives;
- and
- wherein an opacification layer is absent from the banknote.
A banknote comprising a transparent film comprising a non-fibrous substrate layer of regenerated cellulose, wherein the regenerated cellulose is not regenerated cellulose which has been chemically modified, wherein said transparent film further comprises an ink-receptive layer on at least one surface of said substrate layer, wherein said transparent film is devoid of light-sensitive additives, wherein one or more security feature(s) are disposed on one or both surfaces of the transparent film, wherein the one or more security feature(s) comprise at least one of a printed signature or serial number, optical security feature(s), and printed features comprising optically variable ink, magnetic ink and/or fluorescent ink, wherein printed information is disposed on at least a portion of said transparent film, and wherein an opacification layer is absent from the banknote.
A method of manufacturing a plurality of different types of banknote, wherein an opacification layer is absent from each type of banknote and wherein each type of banknote is manufactured by a method comprising the steps of:
- a. introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose, wherein the transparent film is devoid of watermarks or other security features and wherein the regenerated cellulose is not regenerated cellulose which has been chemically modified;
- and
- b. disposing printed information on at least a portion of said transparent film by an offset printing step,
- c. after step (b), disposing one or more security feature(s) on one or both surfaces of the transparent film, wherein the one or more security feature(s) comprise at least one of a printed signature or serial number, optical security feature(s), and printed features comprising optically variable ink, magnetic ink and/or fluorescent ink;
- d. wherein said transparent film introduced into said offset printing device further comprises an ink-receptive layer on at least one surface of said substrate layer, wherein said transparent film is devoid of light-sensitive additives, and
- e. wherein either (i) the same type of transparent film which is fed into the printing device in step (a) is used as a base film for each of said plurality of different types of banknote, such that said plurality of different types of banknote differ from each other only by features applied by a processing step subsequent to step (a);
- or (ii) the same type of offset-printed film which results from step (b) is used as a base film for each of said plurality of different types of banknote, such that said plurality of different types of banknote differ from each other only by the features applied to said offset-printed film which results from step (b) by a subsequent processing step.
Dependencies are inferred from the claim text.