Invention Grant
- Patent Title: Dry toner and method of preparing same
- Patent Title (中): 干粉及其制备方法
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Application No.: US12370041Application Date: 2009-02-12
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Publication No.: US07939238B2Publication Date: 2011-05-10
- Inventor: Hiroshi Yamashita , Tsunemi Sugiyama , Shigeru Emoto , Masami Tomita
- Applicant: Hiroshi Yamashita , Tsunemi Sugiyama , Shigeru Emoto , Masami Tomita
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2001-202093 20010703
- Main IPC: G03G9/087
- IPC: G03G9/087
Abstract:
A dry toner for developing an electrostatic image, including a toner binder containing a urea-modified polyester. The toner has an average sphericity of 0.96 or more and contains no more than 30% by weight of particles having a sphericity of less than 0.95.
Public/Granted literature
- US20090162780A1 DRY TONER AND METHOD OF PREPARING SAME Public/Granted day:2009-06-25
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