Pressure-sensitive or heat-sensitive recording material

Claim 1

A pressure-sensitive or heat sensitive recording material comprising a carrier and a color forming system containing at least one carbazolylmethane compound of the formula ##STR20## in which each of R 1 and R 2 independently represents hydrogen, alkyl of not more than 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or alkenyl of not more than 12 carbon atoms, acyl of 1 to 12 carbon atoms, phenyl, benzyl, or phenyl or benzyl which is substituted by halogen, lower alkyl, lower alkoxy or nitro, Z represents alkyl of 1 to 12 carbon atoms, alkenyl of not more than 12 carbon atoms, aryl, aralkyl or represents a unsubstituted or substituted heterocyclic radical selected from the group consisting of 3-carbazolyl, N-benzyl-3-carbazolyl, N-lower alkyl-3-carbazolyl, 2-furyl, 2-thienyl, 4-pyridyl, 2-N-methylpyrrolyl, 3-indolyl, 2-lower alkyl-3-indolyl, 2-phenyl-3-indolyl, 1-acetyl-3-indolyl, 1-lower alkyl-2-methyl-3-indolyl, 1-phenyl-3-methyl-5-pyrazolon-4-yl, 1-phenyl-3-methyl-5-amino-pyrazol-4-yl or 1-methyl-2,4-dioxo-quinolin-3-yl, and each of the rings A, B, D and E independently can be substituted by cyano, nitro, halogen, lower alkyl, lower alkoxy or lower alkylcarbonyl.