发明名称 |
ELECTROSTATIC IMAGE DEVELOPING TONER, DEVELOPER, AND IMAGE FORMING APPARATUS |
摘要 |
A toner, including: base particles containing a polyester resin, a colorant, and a release agent, wherein the toner has a glass transition temperature (Tg1st) of 20° C. to 50° C. where the glass transition temperature (Tg1st) is measured in first heating of differential scanning calorimetry (DSC) of the toner, wherein tetrahydrofuran (THF) insoluble matter of the toner has a glass transition temperature [Tg2nd (THF insoluble matter)] of 30° C. or lower where the glass transition temperature [Tg2nd (THF insoluble to matter)] is measured in second heating of differential scanning calorimetry (DSC) of the THF insoluble matter, and wherein 50% or less of the colorant is present within a region of 1,000 nm from a surface of each of the base particles toward a center thereof. |
申请公布号 |
US2015248070(A1) |
申请公布日期 |
2015.09.03 |
申请号 |
US201514629954 |
申请日期 |
2015.02.24 |
申请人 |
CHIBA Ryuta;Nakayama Shinya;Yamada Hiroshi;Masuda Minoru;Saitoh Akinori;Santo Hideyuki;Nagai Shinsuke;Takeyama Akihiro;Takeda Hiroyuki;Sugimoto Tsuyoshi;Amemori Suzuka;Nagata Kohsuke |
发明人 |
CHIBA Ryuta;Nakayama Shinya;Yamada Hiroshi;Masuda Minoru;Saitoh Akinori;Santo Hideyuki;Nagai Shinsuke;Takeyama Akihiro;Takeda Hiroyuki;Sugimoto Tsuyoshi;Amemori Suzuka;Nagata Kohsuke |
分类号 |
G03G9/00 |
主分类号 |
G03G9/00 |
代理机构 |
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代理人 |
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主权项 |
1. A toner, comprising:
base particles containing a polyester resin, a colorant, and a release agent, wherein the toner has a glass transition temperature (Tg1st) of 20° C. to 50° C. where the glass transition temperature (Tg1st) is measured in first heating of differential scanning calorimetry (DSC) of the toner, wherein tetrahydrofuran (THF) insoluble matter of the toner has a glass transition temperature [Tg2nd (THF insoluble matter)] of 30° C. or lower where the glass transition temperature [Tg2nd (THF insoluble matter)] is measured in second heating of differential scanning calorimetry (DSC) of the THF insoluble matter, and wherein 50% or less of the colorant is present within a region of 1,000 nm from a surface of each of the base particles toward a center thereof. |
地址 |
Kanagawa JP |