Recording material
AssigneeFuji Photo Film Co., Ltd.
InventorsMasanobu Takashima, Masato Satomura, Ken Iwakura, Akira Igarashi
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Abstract
A recording material is described comprising an electron donating colorless dye, an electron accepting compound, and at least one compound represented by formula (I), (II), or (III) Ar.sub.1 O--R--SAr.sub.2 (I) Ar.sub.1 S--R--SAr.sub.2 (II) Ar.sub.1 S--R--X--Ar.sub.2 (III) wherein Ar.sub.1 and Ar.sub.2 each represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic ring, R is a divalent group containing from 1 to 10 carbon atoms, and X represents --COO-- group or ##STR1## group.
Claims15
A recording material comprising an electron donating colorless dye, an electron accepting compound, and at least one compound represented by formula (I), (II), or (III)
- Ar.sub.1 O--R--SAr.sub.2 (I)
- Ar.sub.1 S--R--SAr.sub.2 (II)
- Ar.sub.1 S--R--X--Ar.sub.2 (III)
- wherein Ar.sub.1 and Ar.sub.2 each represents a substituted or unsubstituted aryl group, but not a phenolic group, R is a divalent group containing from 1 to 10 carbon atoms, and X represents a --COO-- group or an ##STR6## group.
A recording material comprising an electron donating colorless dye, an electron accepting compound, and at least one compound represented by formula (I) or (III)
- Ar.sub.1 O--R--SAr.sub.2 (I)
- Ar.sub.1 S--R--X--Ar.sub.2 (III)
- wherein Ar.sub.1 and Ar.sub.2 each represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic ring, R is a divalent group containing from 1 to 10 carbon atoms, and X represents --COO-- group or ##STR7## group.
Dependencies are inferred from the claim text.