Recording material
AssigneesMitsui Toatsu Chemicals, Inc., Mitsubishi Paper Mills Limited
InventorsMasakatsu Nakatsuka, Naomasa Koike, Akinori Okada
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AssigneesMitsui Toatsu Chemicals, Inc., Mitsubishi Paper Mills Limited
InventorsMasakatsu Nakatsuka, Naomasa Koike, Akinori Okada
Estimating the term…
The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.
A heat-sensitive recording material comprising a substrate having at least one layer thereon comprising:
Dependencies are inferred from the claim text.