发明公开
- 专利标题: Carrier for developer
- 专利标题(中): 发展商承运人
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申请号: EP90112256.4申请日: 1990-06-27
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公开(公告)号: EP0405503A3公开(公告)日: 1991-01-16
- 发明人: Kawata, Hideaki , Funato, Masatomi , Kawano, Nobuaki, Mita Industrial Co., Ltd. , Honda, Koji
- 申请人: MITA INDUSTRIAL CO. LTD.
- 申请人地址: 2-28, 1-chome, Tamatsukuri Chuo-ku Osaka-shi Osaka 540 JP
- 专利权人: MITA INDUSTRIAL CO. LTD.
- 当前专利权人: MITA INDUSTRIAL CO. LTD.
- 当前专利权人地址: 2-28, 1-chome, Tamatsukuri Chuo-ku Osaka-shi Osaka 540 JP
- 代理机构: Kraus, Walter, Dr.
- 优先权: JP165345/89 19890629
- 主分类号: G03G9/113
- IPC分类号: G03G9/113
摘要:
A resin-coated magnetic carrier for two-component developers which comprises magnetic particles and a resin coating formed on the individual magnetic particles is described. The resin coating is made of a cured resin composition comprised of an alkylated melamine resin whose molecular weight satisfies the following inequality
M ≧ 1100C - 400
wherein M represents a weight average molecular weight of the resin and C represents the number of carbon atoms in the alkyl moiety, and an acryl-modified silicone resin. The use of the composition is effective in preventing the coated particles from melt adhesion and in forming a smooth and uniform coating layer on individual particles. The resin-coated carrier is significantly reduced in amount of spend carrier and has good durability, moisture resistance, chargeability.
M ≧ 1100C - 400
wherein M represents a weight average molecular weight of the resin and C represents the number of carbon atoms in the alkyl moiety, and an acryl-modified silicone resin. The use of the composition is effective in preventing the coated particles from melt adhesion and in forming a smooth and uniform coating layer on individual particles. The resin-coated carrier is significantly reduced in amount of spend carrier and has good durability, moisture resistance, chargeability.
公开/授权文献
- EP0405503B1 Carrier for developer 公开/授权日:1995-05-24
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