Adhesively correctable transfer medium with delayed alteration r

Stock material or miscellaneous articles – Metal continuous phase interengaged with nonmetal continuous...

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106 20, 106 22, 283 8B, 283 9R, 400237, 427 7, 428307, 428915, 428916, B41J 3105, B41J 3106, B41M 314

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active

042398320

ABSTRACT:
The present invention relates to an ink formulation which may be coated on a flexible substratum to produce a typewriter ribbon or the like, wherein impressions made from such a ribbon are capable of adhesive removal shortly after being created on all conventional typing bonds and papers, but which impressions exhibit delayed alteration resistance whereby any attempt at correcting or removing the indicia by pressure sensitive adhesive means or altering the indicia by erasing will leave an obvious and permanent indication that a removal was attempted.

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patent: 2382861 (1945-08-01), Curado
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patent: 3363336 (1968-01-01), Skinner
patent: 3363337 (1968-01-01), Skinner et al.
patent: 3460964 (1969-08-01), Dunham
patent: 3847850 (1974-11-01), Rudolphy
patent: 4092280 (1978-05-01), Barough et al.
patent: 4161551 (1979-07-01), Barough et al.

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