发明名称 |
Toner and development agent, image forming apparatus, and process cartridge using the same |
摘要 |
A toner includes a coloring agent, a binder resin comprising a crystalline resin having a urethane skeleton and/or urea skeleton, and a releasing agent (a microcrystalline wax). A development agent, a process cartridge, and an image forming apparatus employ the toner to form images on recording media electrophotographically. |
申请公布号 |
US8808955(B2) |
申请公布日期 |
2014.08.19 |
申请号 |
US201213608143 |
申请日期 |
2012.09.10 |
申请人 |
Ricoh Company, Ltd. |
发明人 |
Nakayama Shinya;Yamamoto Atsushi;Santo Hideyuki;Yamashita Daiki;Amemori Suzuka;Yamada Masahide |
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 coloring agent; a binder resin comprising an amount of 50% by weight or more of a crystalline resin having a urethane skeleton and/or urea skeleton; and a releasing agent comprising a microcrystalline wax wherein, in a diffraction spectrum of the toner obtained by X-ray diffraction, a ratio of C/(A+C) is 0.15 or greater, where C represents an integrated intensity of a spectrum deriving from a crystalline structure and A represents an integrated intensity of a spectrum deriving from a non-crystalline structure. |
地址 |
Tokyo JP |