| 发明名称 | Toner and developer | ||
| 摘要 | To provide a toner, which contains: a non-crystalline polyester resin A obtained through a reaction between a non-linear chain reactive precursor and a curing agent, and having a glass transition temperature of −60° C. to 0° C.; a non-crystalline polyester resin B having a glass transition temperature of 40° C. to 70° C.; and a crystalline polyester resin C, wherein the toner has a glass transition temperature Tg1st of 20° C. to 40° C. as measured with first heating in differential scanning calorimetry (DSC). | ||
| 申请公布号 | US8932789(B2) | 申请公布日期 | 2015.01.13 |
| 申请号 | US201213593956 | 申请日期 | 2012.08.24 |
| 申请人 | Ricoh Company, Ltd. | 发明人 | Sugimoto Tsuyoshi;Yamashita Hiroshi;Asahina Daisuke;Sekiguchi Satoyuki;Takahashi Rintaro;Shiba Masana;Fukuda Yukari;Konno Saki |
| 分类号 | G03G9/00;G03G9/08;G03G9/087 | 主分类号 | G03G9/00 |
| 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 A having a branched chain structure, and having a glass transition temperature of −60° C. to 0° C.; a non-crystalline polyester resin B having a glass transition temperature of 40° C. to 70° C.; and a crystalline polyester resin C, wherein the toner has a glass transition temperature Tg1st of 20° C. to 40° C. as measured with first heating in differential scanning calorimetry (DSC). | ||
| 地址 | Tokyo JP | ||