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US 8,211,606 B2Granted
Coloring compound, yellow toner, sheet for heat-sensitive transfer recording, and ink
AssigneeCanon Kabushiki Kaisha
InventorsYasuaki Murai, Masashi Hirose, Masayoshi Kato, Takayuki Toyoda, Takeshi Miyazaki
Life of this patent
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Abstract
A coloring compound is provided which is excellent in coloring ability and transparency, has high solubility in organic solvents, and is superior in light resistance. A toner, a sheet for heat-sensitive transfer recording and an ink that use the coloring compound are also provided. The coloring compound is represented by the following general formula:
Claims7
A coloring compound having a structure represented by the general formula (1):
- General Formula (1)
- wherein R1 represents a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group, or an optionally substituted aralkyl group;
- R2 represents a hydrogen atom, an optionally substituted alkyl group, an optionally substituted cycloalkyl group, or an optionally substituted aralkyl group;
- R3 represents an optionally substituted alkyl group or an optionally substituted aryl group;
- the total number of carbon atoms of R1, R2 and R3 is 4 or more but 16 or less;
- R4, R5 and R7 each independently represent a hydrogen atom, a halogen atom or a nitro group;
- and R6 represents a fluorine atom, a trifluoromethyl group, or a cyano group.
4 more elements
Dependencies are inferred from the claim text.