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公开(公告)号:US5456990A
公开(公告)日:1995-10-10
申请号:US214237
申请日:1994-03-17
申请人: Seiichi Takagi , Toshiyuki Yano , Hiroe Okuyama , Teruo Masukawa , Sueko Sakai , Emi Takahashi
发明人: Seiichi Takagi , Toshiyuki Yano , Hiroe Okuyama , Teruo Masukawa , Sueko Sakai , Emi Takahashi
CPC分类号: G03G9/0836 , G03G9/0819 , G03G9/0835 , G03G9/0837 , G03G9/0838 , Y10S430/104
摘要: A magnetic toner comprising a binder resin having dispersed therein a magnetic powder is disclosed, wherein the magnetic toner has a volume average particle diameter (D.sub.50) of from 4 to 9 .mu.m, the magnetic powder has a number average particle diameter of from 0.15 to 0.25 .mu.m (hereinafter simply referred to as a particle diameter), a BET specific surface area of from 6 to 8 m.sup.2 /g, and a residual magnetization of from 7 to 10 emu/g, the magnetic powder is present in an amount of from 30 to 70% based on the total weight of the magnetic toner, and the magnetic toner has adhered to the surface thereof silica powder having been rendered hydrophobic. The magnetic toner exhibits superior performance in terms of image density, definition, dot and fine line reproducibility, and environmental stability.
摘要翻译: 公开了一种包含分散有磁性粉末的粘合剂树脂的磁性调色剂,其中磁性调色剂的体积平均粒径(D50)为4〜9μm,磁粉的数均粒径为0.15〜 0.25μm(以下简称为粒径),BET比表面积为6〜8m 2 / g,剩余磁化强度为7〜10emu / g,磁粉的存在量为 基于磁性调色剂的总重量为30至70%,并且磁性调色剂已经附着到具有疏水性的二氧化硅粉末的表面上。 磁性调色剂在图像密度,定义,点和细线再现性以及环境稳定性方面表现出优异的性能。
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公开(公告)号:US5474871A
公开(公告)日:1995-12-12
申请号:US338863
申请日:1994-11-14
申请人: Seiichi Takagi , Toyofumi Inoue , Teruo Masukawa
发明人: Seiichi Takagi , Toyofumi Inoue , Teruo Masukawa
CPC分类号: G03G9/0825 , G03G9/08704 , G03G9/08782 , G03G9/08795 , G03G9/08797
摘要: A magnetic toner comprising a binder resin a magnetic substance is disclosed, the toner containing from 2 to 20% by weight of a polyolefin, preferably polyethylene, having a dispersed particle size of from 0.01 to 0.5 .mu.m. The particle size distribution of the polyolefin preferably has a coefficient of variation of from 20 to 40%. The magnetic toner is fixable with low heat energy, hardly causes offset and smudge, and has a reduced abrasive action on a photoreceptor. It is therefore suitable for use in a fixing means with no cleaning mechanism, a machine with a double side copying function, or an organic photoreceptor.
摘要翻译: 公开了包含粘合剂树脂和磁性物质的磁性调色剂,该调色剂含有2至20重量%的分散粒度为0.01至0.5μm的聚烯烃,优选聚乙烯。 聚烯烃的粒度分布优选具有20〜40%的变异系数。 磁性调色剂可以以低热量固定,几乎不引起胶印和污迹,并且对感光体具有减少的研磨作用。 因此适用于没有清洁机构的固定装置,具有双面复印功能的机器或有机感光体。
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公开(公告)号:US4255371A
公开(公告)日:1981-03-10
申请号:US3540
申请日:1979-01-15
CPC分类号: C08J9/0023 , B29C44/56 , C08J9/06 , C08J2323/02 , Y10S264/18
摘要: In a process for producing an olefinic resin foam which comprises the steps of forming a composition comprising an olefinic resin, a chemical blowing agent and a crosslinking agent into an unfoamed sheet-like or rod-like shaped article and foaming it by heating, the improvement wherein the heat-forming step is carried out in an oxygen-free atmosphere or in an atmosphere containing not more than 10% of oxygen.
摘要翻译: 在制备烯烃树脂发泡体的方法中,其包括以下步骤:将包含烯烃树脂,化学发泡剂和交联剂的组合物形成到未发泡的片状或棒状成形制品中并通过加热使其发泡, 其中,所述发热步骤在无氧气氛或不超过10%的氧的气氛中进行。
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