Incremental printing of symbolic information – Thermal marking apparatus or processes – Preheating
Reexamination Certificate
2005-05-24
2005-05-24
Feggins, K. (Department: 2861)
Incremental printing of symbolic information
Thermal marking apparatus or processes
Preheating
Reexamination Certificate
active
06897886
ABSTRACT:
A thermal recording material comprising, on a substrate, a thermal recording layer which includes an electron-donating dye precursor and an electron-accepting compound, wherein at least one kind of the electron-donating dye precursor is an indolylphthalide compound represented by general formula (1):wherein R1and R2each independently represent a hydrogen atom, an alkyl group or the like, provided that R1and R2do not represent a hydrogen atom at the same time, and R1and R2may form a bond therebetween to collectively represent a single cycloamino structure; R3represents an alkyl group or the like; R4and R5each independently represent a hydrogen atom, an alkyl group or an aryl group; X1, X2, X3and X4each independently represent N or CH; and Y represents an oxygen atom or a sulfur atom.
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Minami Kazumori
Yamada Satoru
Feggins K.
Fuji Photo Film Co. , Ltd.
Sughrue & Mion, PLLC
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