Patent ID: 6303540
Filing Date: 2001-10-16
Classification: B41M

Abstract:
A thermally sensitive recording medium which has thermally sensitive recording layer containing colorless or pale colored basic leuco dye and organic color developer as main components on a substrate, wherein said thermally sensitive recording layer contains diphenylsulfone bridgeable type compound represented by general formula (1) and at least one compound represented by general formula (2), ##STR28##wherein, X and Y can be different and indicates a saturated or an unsaturated liner or grafted hydrocarbon group of carbon number 1-12 which can possess an ether bond, or indicate ##STR29##wherein R indicates a methylene group or an ethylene group, T indicates ahydrogen atom or an alkyl group of carbon number 1-4,and R.sub.1 -R.sub.6 independently indicate a halogen atom, an alkyl group of carbon number 1-6, or an alkenyl group,further, m, n, p, q, r, t indicate an integer number of 0-4 and when are bigger than 2, R.sub.1 -R.sub.6 can be different,and a is an integer of 0-10, ##STR30##wherein, R.sub.7 represents an alkyl group of carbon number 1-6 or an electron attracting group, u is an integer of 0-2.