发明申请
- 专利标题: TONER, DEVELOPER, AND IMAGE FORMING METHOD
- 专利标题(中): 调色剂,开发者和图像形成方法
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申请号: US12048741申请日: 2008-03-14
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公开(公告)号: US20080227002A1公开(公告)日: 2008-09-18
- 发明人: Yoshihiro Moriya , Hiroshi Yamashita , Akihiro Kotsugai , Shinya Nakayama , Tsuyoshi Sugimoto , Akiyoshi Sabu
- 申请人: Yoshihiro Moriya , Hiroshi Yamashita , Akihiro Kotsugai , Shinya Nakayama , Tsuyoshi Sugimoto , Akiyoshi Sabu
- 优先权: JP2007-069546 20070316
- 主分类号: G03G13/14
- IPC分类号: G03G13/14 ; G03G9/087
摘要:
To provide a toner including a binder resin and colorant and is granulated in aqueous medium, wherein the binder resin is a polymer having a polyester skeleton, the polyester skeleton is obtained by block copolymerization of a polyester skeleton A in which at least a constituent unit in which CH3—C*—H(—OH)(COOH) is dehydration condensed is contained in a repeated structure and a polyester skeleton B in which a constituent unit in which CH3—C*—H(—OH)(COOH) is dehydration condensed is not contained in a repeated structure, and an optical isomer ratio X (%) (monomer equivalent) is 80% or less, where the optical isomer ratio X (%)=|X (L-type)−X (D−type)| where X (L-type) denotes a ratio (%) of L-type (lactic acid monomer equivalent) and X (D-type) denotes a ratio (%) of D-type (lactic acid monomer equivalent)) in the constituent unit where CH3—C*—H(—OH)(COOH) is dehydration condensed.
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