发明名称 Colorless transparent toner, toner set, development agent, image forming apparatus, and printed matter
摘要 A colorless transparent toner containing a crystalline resin having a urethane bond and/or a urea bond.
申请公布号 US9005859(B2) 申请公布日期 2015.04.14
申请号 US201313758421 申请日期 2013.02.04
申请人 Ricoh Company, Ltd. 发明人 Sabu Akiyoshi;Nakayama Shinya;Yamamoto Atsushi;Nakajima Yukiko;Santo Hideyuki
分类号 G03G9/00;G03G9/087;G03G15/08;G03G9/08 主分类号 G03G9/00
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 colorless transparent toner comprising: a binder resin that comprises a crystalline resin having a urethane bond and/or a urea bond; wherein the colorless transparent toner has a ratio {C/(C+A)} of 0.15 or greater, where C represents an integration intensity of a spectrum deriving from a crystalline structure and A represents an integration intensity of a spectrum deriving from a non-crystalline structure in a diffraction spectrum obtained by an X-ray diffraction device; and wherein the colorless transparent toner satisfies the relations: T1−T2≦30° C. and T2≧30° C., where T1 represents a maximum endothermic peak temperature for a second time temperature rising and T2 represents a maximum exothermic peak temperature for a first time temperature descending as measured by a differential scanning calorimeter in a temperature range of from 0° C. to 100° C. at a temperature rising and descending speed of 10° C./min.
地址 Tokyo JP