Thermally-responsive record material

Details Thermally-responsive record material Thermally-responsive record material

B - Operations, Transporting

41

M

42/3

B41M 5/26 (2006.01) B41M 5/32 (2006.01)

Patent

CA 1296895

Abstract of the Disclosure 69601-70 An improved thermally-responsive record material having improved image retention is disclosed. The invention is an improved thermally-responsive record member, typically a sheet material, bearing a thermally-responsive color-forming composition comprising a chromogenic material, an acidic developer material, and a metal salt of a compound of the formula Image wherein Ra is selected from -CH=CH, Image , -(CH2)4, -(CH2)3-, and -CH2-CH=CH-, wherein R1 is selected from hydrogen, halogen, alkyl. oxyalkyl, or NO2 with the proviso that the alkyl groups are of 1-5 carbons, M is a metal selected from Zn, Ca, Sn, Ni, Cu, Al, Co and Mg, and m is an integer corresponding to the valency of the metal M.

576275

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