| 发明名称 | Toner, developer, and image forming apparatus | ||
| 摘要 | A toner, including: a copolymerization resin, wherein the copolymerization resin includes: a unit derived from a polyester resin including a polycarboxylic acid having a valence of 2 or more and a polyol having a valence of 2 or more; and a unit derived from a resin having a polyhydroxycarboxylic acid skeleton, where the unit derived from the resin having a polyhydroxycarboxylic acid skeleton is bonded to the unit derived from the polyester resin via at least one of a urethane group and a urea group, and wherein the toner has a relative degree of crystallization of 10% or more and less than 50%. | ||
| 申请公布号 | US9563141(B2) | 申请公布日期 | 2017.02.07 |
| 申请号 | US201414758402 | 申请日期 | 2014.01.20 |
| 申请人 | Ricoh Company, Ltd. | 发明人 | Sugimoto Tsuyoshi;Yamashita Hiroshi;Asahina Daisuke;Chiba Susumu;Sekiguchi Satoyuki |
| 分类号 | G03G9/087;C08G81/00 | 主分类号 | G03G9/087 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A toner, comprising: a copolymerization resin, wherein the copolymerization resin comprises: a unit derived from a polyester resin including a polycarboxylic acid having a valence of 2 or more and a polyol having a valence of 2 or more; and a unit derived from a resin having a polyhydroxycarboxylic acid skeleton, where the unit derived from the resin having a polyhydroxycarboxylic acid skeleton is bonded to the unit derived from the polyester resin via at least one of a urethane group and a urea group, and wherein the toner has a relative degree of crystallization of 10% or more and less than 50%. | ||
| 地址 | Tokyo JP | ||