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US 4,283,458 AGranted
Heat-sensitive recording paper containing a novel electron accepting compound
AssigneeFuji Photo Film Co., Ltd.
InventorsAkira Igarashi, Kozo Sato
Life of this patent
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Abstract
A heat-sensitive recording sheet comprising a support and a recording layer containing an electron donating colorless dye and a compound represented by the following formula: ##STR1## wherein R represents an alkyl group containing 2 to 12 carbon atoms.
Claims8
A heat-sensitive recording sheet consisting essentially of a support and a recording layer containing an electron donating colorless dye and a compound represented by the following formula:
- ##STR3## wherein R represents an alkyl group containing 5 to 8 carbon atoms.
Dependencies are inferred from the claim text.