Sheet printed with invisible inks, developers and erasure...

Details Sheet printed with invisible inks, developers and erasure... Sheet printed with invisible inks, developers and erasure...

B - Operations, Transporting

41

M

96/182, 96/43, 4

B41M 3/14 (2006.01) C09D 10/00 (2006.01) C09D 11/00 (2006.01)

Patent

CA 1148782

ABSTRACT The invention relates to a developable surface comprising a carrier layer having thereon at least two deposits of one or more invisible inks in adjacent or overlapping relationship, said deposits in the developed state being unresolvable.

317325

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