发明授权
- 专利标题: Encapsulated toner for heat-and-pressure fixing
- 专利标题(中): 用于热压定影的封装调色剂
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申请号: US401438申请日: 1995-03-09
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公开(公告)号: US5565293A公开(公告)日: 1996-10-15
- 发明人: Koji Akiyama , Koji Kameyama , Koji Shimokusa , Kuniyasu Kawabe
- 申请人: Koji Akiyama , Koji Kameyama , Koji Shimokusa , Kuniyasu Kawabe
- 申请人地址: JPX Tokyo
- 专利权人: KAO Corporation
- 当前专利权人: KAO Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX6-066814 19940309
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/093
摘要:
The encapsulated toner for heat-and-pressure fixing of the present invention has a heat-fusible core material containing at least a thermoplastic resin and a coloring agent and a shell formed thereon so as to cover the surface of the core material. Moreover, the encapsulated toner has the following properties: 1) The glass transition temperature ascribed to the thermoplastic resin used as a main component of the heat-fusible core material is 10.degree. C. to 50.degree. C.; 2) A minimum load required for 58 compression of a particle size of the encapsulated toner is from 5 to 50 mgf, and a minimum load required for 10% compression of a particle size of the encapsulated toner is from 10 to 100 mgf, when a compressive variation of one toner particle is measured by a micro compression testing machine under the given conditions; and 3) The difference in cohesiveness before and after keeping the toner standing at 50.degree. C. for 24 hours, is not more than 10, wherein the cohesiveness is defined as the sum of values (a), (b), and (c) obtained by the following equations:(a)=(weight % of the toner remaining.times.1, on a 250 .mu.m mesh-sieve)(b)=(weight % of the toner remaining.times.0.6, and on a 149 .mu.m mesh-sieve)(c)=(weight % of the toner remaining.times.0.2, on a 74 .mu.m mesh-sieve)each of the weight % in the equations being measured by a powder property analyzer.
公开/授权文献
- US5056833A Flexible pipe coupling 公开/授权日:1991-10-15
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