发明名称 |
Toner for developing electrostatic images |
摘要 |
Disclosed is a toner for developing electrostatic images comprising a colored resin particle containing a binder resin, a colorant and a softening agent, and an external additive, wherein the colored resin particle contains a diester compound represented by the following general formula (1) as the softening agent, and a content of the diester compound is in the range from 1 to 15 parts by mass with respect to 100 parts by mass of the colored resin particle, and the toner has a softening temperature “Ts” of 55 to 70° C., a flow starting temperature “Tfb” of 80 to 100° C. and a glass transition temperature of 40 to 70° C. in a flow tester:;wherein, R1 is an ethylene group or a trimethylene group; and each of R2 and R3 is independently a linear alkyl group having 11 to 25 carbons. |
申请公布号 |
US9170509(B2) |
申请公布日期 |
2015.10.27 |
申请号 |
US201214241408 |
申请日期 |
2012.09.19 |
申请人 |
ZEON CORPORATION |
发明人 |
Masuda Azusa |
分类号 |
G03G9/08;G03G9/097;G03G9/087 |
主分类号 |
G03G9/08 |
代理机构 |
Westerman, Hattori, Daniels & Adrian, LLP |
代理人 |
Westerman, Hattori, Daniels & Adrian, LLP |
主权项 |
1. A toner for developing electrostatic images comprising a colored resin particle containing a binder resin, a colorant and a softening agent, and an external additive,
wherein the colored resin particle contains a diester compound represented by the following general formula (1) as the softening agent, and a content of the diester compound is in the range from 1 to 15 parts by mass with respect to 100 parts by mass of the colored resin particle, the toner has a softening temperature “Ts” of 55 to 70° C., a flow starting temperature “Tfb” of 80 to 100° C. and a glass transition temperature of 40 to 70° C. in a flow tester, and the binder resin is not a polyester resin: wherein, R1 is an ethylene group or a trimethylene group; and each of R2 and R3 is independently a linear alkyl group having 11 to 25 carbons. |
地址 |
Tokyo JP |