Patent ID: 7833685

Claim:
A coloring compound for a colorant for a yellow toner, comprising a structure represented by the following formula (1): wherein: R 1 represents an alkyl group or an aryl group; R 2 represents a hydrogen atom, a cyano group, or —CONH 2 ; R 3 represents —NR 8 ,R 9 , where R 8 and R 9 each independently represent a group selected from a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, an n-pentyl group, an n-hexyl group, an n-heptyl group, an n-octyl group, a 2-ethylhexyl group, an n-nonyl group, an n-decyl group, an n-undecyl group and an n-dodecyl group, and the total number of the carbon atoms of R 8 and R 9 is from 12 to 24; and R 4 , R 5 , R 6 , and R 7 each independently represent a hydrogen atom, a halogen atom, —CF 3 , —NO 2 , an alkyl group, or an alkyloxy group.