| 发明名称 | Toner and developer | ||
| 摘要 | To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st-Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof. | ||
| 申请公布号 | US8795940(B2) | 申请公布日期 | 2014.08.05 |
| 申请号 | US201213684883 | 申请日期 | 2012.11.26 |
| 申请人 | Ricoh Company, Ltd. | 发明人 | Sugimoto Tsuyoshi;Yamashita Hiroshi;Asahina Daisuke;Takahashi Rintaro;Yamada Masahide;Nakayama Shinya;Yamamoto Atsushi;Sakashita Shingo |
| 分类号 | G03G9/08 | 主分类号 | G03G9/08 |
| 代理机构 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A toner, comprising: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st-Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof. | ||
| 地址 | Tokyo JP | ||