Yellow toner
To provide a yellow toner having a colorant in a good dispersed state, obtained through excellent granulation performance and having stable developing performance, the yellow toner contains a binder resin, a wax and a colorant, and is characterized by containing as the colorant a compound represented by the following general formula (1) and a compound represented by the following general formula (2).
1. A yellow toner comprising yellow toner particles each containing a binder resin, a wax and a colorant; the colorant comprising a compound represented by the following general formula (1) and a compound represented by the following general formula (2):
wherein R 1 , R 2 , R 3 , R′ 1 , R′ 2 and R′ 3 each independently represent a hydrogen atom, an alkyl group, an aryl group or an aralkyl group, and any of these may have a substituent; and
wherein R 4 to R 7 each independently represent a hydrogen atom, a halogen atom, a sulfonic acid group, a sulfonic acid ester group, a sulfonic acid amide group, a sulfonic acid salt group, a carboxylic acid group, a carboxylic acid ester group, a carboxylic acid amide group or a carboxylic acid salt group; R 8 and R 9 each independently represent a hydrogen atom, a cyano group, a carboxylic acid group, a carboxylic acid ester group, a carboxylic acid amide group, a carboxylic acid salt group or a heterocyclic group;
and R 7 and R 8 , or R 8 and R 9 , may each independently combine to form a ring.
2. The yellow toner according to claim 1 , wherein, in the general formula (1), R 1 to R 3 are the same functional groups.
3. The yellow toner according to claim 1 , wherein, in the general formula (1), R 1 to R 3 are alkyl groups.
4. The yellow toner according to claim 1 , wherein the compound represented by the general formula (2) is C.I. Pigment Yellow 185.