George Rottmann

US Patent:

42398320, Dec 16, 1980

Filed:

Nov 30, 1978

Appl. No.:

5/965166

Inventors:

Victor Barouh - Old Westbury NY
George Rottmann - Jackson Heights NY
Salvatore DeSimone - Brooklyn NY

Assignee:

Eaton Allen Corp. - Brooklyn NY

International Classification:

B41J 3105
B41J 3106
B41M 314

US Classification:

428539

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.

US Patent:

41615514, Jul 17, 1979

Filed:

Mar 24, 1977

Appl. No.:

5/781023

Inventors:

Victor Barouh - Old Westbury NY
George Rottmann - Jackson Heights NY
Salvatore DeSimone - Brooklyn NY

Assignee:

Eaton Allen Corp. - Brooklyn NY

International Classification:

B41J 3106

US Classification:

428539

Abstract:

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