发明授权
US07718339B2 Electrostatic image developing toner and image forming apparatus using the same
有权
静电图像显影调色剂和使用其的图像形成装置
- 专利标题: Electrostatic image developing toner and image forming apparatus using the same
- 专利标题(中): 静电图像显影调色剂和使用其的图像形成装置
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申请号: US12210361申请日: 2008-09-15
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公开(公告)号: US07718339B2公开(公告)日: 2010-05-18
- 发明人: Masami Tomita , Ken Umehara
- 申请人: Masami Tomita , Ken Umehara
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2006-069932 20060314; JP2006-181252 20060630
- 主分类号: G03G9/00
- IPC分类号: G03G9/00
摘要:
Provided is an electrostatic image developing toner excellent in blocking resistance at high temperature and humidity, as well as in low temperature-fixing property, having a polyester resin toner binder. Provided is the electrostatic image developing toner containing at least one noncrystalline polyester resin and a crystalline polyester resin, wherein the polyester resins are formed in the presence of at least one titanium-containing catalyst expressed in the following Formulas: Ti(—X)m(—OH)n O═Ti(—X)p(—OR)q where X is a residue resulting from removing an H atom in one hydroxyl group from (poly)alkanolamine having 2 to 12 carbon atoms, R represents an H atom or an alkyl group that has 1 to 8 carbon atoms and may contain 1 to 3 ether bonds, m, n, p, and q are integers; m, n, p, and q are 1-4, 0-3, 1-2, 0-1, respectively; and the sum of m and n, and p and q are 4 and 2, respectively.
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