System for cleaning photo catalytic banknotes
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United States of America Patent
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Dec 12, 2017
Issued Date -
N/A
app pub date -
Dec 14, 2015
filing date -
Sep 24, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Self-cleaning banknotes are provided using coatings, inks and additives which are photo-active and catalytic to reactions which are effective in breaking up organic contaminants or dirt to allow for the self-cleaning of banknotes by ambient light exposure as well as the cleaning of processed banknotes using equipment with more intense optical excitation, thus increasing their usable life. The invention is usable with all substrates and particularly polymeric substrates such as biaxially-oriented polypropylene (BOPP). The invention further discloses a system which allows a certain class of fitness parameters to cause these banknotes to be redirected to a cleaning module, be revaluated, and then either returned to circulation or rejected and/or destroyed. In addition, inks which are photo-catalytic can be used for extending the life of the banknotes in printed regions.
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International Classification(s)
- B82Y:SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; ....
- G06Q:DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAP....
- B08B:CLEANING IN GENERAL; PREVENTION OF FOULING IN GENE....
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- B42D:BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER O....
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
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