Toner, and full-color image forming method and full-color image forming apparatus using the toner
A toner including a binder resin, a colorant and a phenol multimer represented by the following General Formula (1): where R 1 to R 6 , R 11 , R 12 , R 14 to R 16 , R 21 , R 22 , and R 24 to R 26 each are a hydrogen atom or a substituent; and n is an integer.
1. A toner, comprising:
a binder resin;
a colorant; and
a phenol multimer represented by Formula (1):
where R 1 , R 11 , and R 21 each are a hydrogen atom;
R 2 , R 12 , and R 22 each are a chlorine atom;
R 3 , R 6 , R 16 , and R 26 each are a hydrogen atom; and
R 4 , R 5 , R 14 , R 15 , R 24 , and R 25 each are a hydrogen atom or a methyl group; and
n denotes a polymerization degree which is an integer of 1 or greater.
2. The toner according to claim 1 ,
wherein the phenol multimer is represented by the Formula (1),
where R 4 , R 5 , R 14 , R 15 , R 24 , and R 25 each are a hydrogen atom.
3. The toner according to claim 1 ,
wherein the phenol multimer is represented by the Formula (1),
where n is from 5 to 25.
4. The toner according to claim 1 ,
wherein the phenol multimer is represented by the Formula (1),
where R 2 , R 12 , and R 22 each are a chlorine atom;
R 1 , R 3 to R 6 , R 11 , R 14 to R 16 , R 21 , and R 24 to R 26 each are a hydrogen atom; and
n is from 7 to 19.
5. The toner according to claim 1 ,
wherein the phenol multimer has chargeability.
6. The toner according to claim 1 ,
wherein the binder resin is a polyester resin.
7. The toner according to claim 1 ,
wherein the phenol multimer comprises the toner in an amount of from 0.01% by mass to 5.0% by mass.
8. The toner according to claim 1 ,
wherein a charge amount of the toner is from −80 μC/g to −10 μC/g.
9. The toner according to claim 1 ,
wherein a common logarithmic value Log ρ of a volume specific resistance ρ of the toner is from 10.9 Log Ωcm to 11.4 Log Ωcm.
10. The toner according to claim 1 ,
wherein a ratio of a volume average particle diameter to a number average particle diameter of the toner is from 1.05 to 1.25.
11. The toner according to claim 1 ,
wherein the toner has an average circularity of from 0.950 to 0.990.
12. The toner according to claim 1 ,
wherein the toner has a BET specific surface area of from 0.5 m 2 /g to 4.0 m 2 /g.