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3. 发明授权

US06406822B1 Color-blind melt flow index properties for toners 有权
标题翻译：调色剂的色盲熔体流动指数特性
公开(公告)号：US06406822B1
公开(公告)日：2002-06-18
申请号：US09671997
申请日：2000-09-29
申请人： Scott M. Silence , Joo T. Chung , James M. Proper , Edward J. Gutman , James G. Stenzel , Kip L. Jugle , Yelena Shapiro , James A. Winters , Maria M. Barden , John S. Walters
发明人： Scott M. Silence , Joo T. Chung , James M. Proper , Edward J. Gutman , James G. Stenzel , Kip L. Jugle , Yelena Shapiro , James A. Winters , Maria M. Barden , John S. Walters
IPC分类号： G03G908
CPC分类号： G03G9/0821 , G03G9/08797 , G03G9/097 , G03G9/09708 , G03G9/09783
摘要： At least three differently colored toners, designed for use together in forming a color image in an image developing device, have substantially the same melt flow index value. By substantially matching the melt flow index values of at least three toners of a set of toners, it has been found that the resultant color image has an overall excellent image quality, i.e., an excellent overall gloss level without any gloss banding. The toners may be made to have substantially the same melt flow index value in a carefully controlled process that includes forming a single toner by feeding at least one binder and at least one colorant into a mixing device to form a mixture, upon exit of the mixture from the mixing device, measuring a rheology property of the mixture with at least one monitoring device, and comparing the measured rheology property to a target property range that the measured rheology property must be within in order for the single toner to achieve the desired melt flow index value, wherein if the measuring indicates that the rheology property is outside of the target property range, feed amounts of the at least one binder or of the at least one colorant into the mixing device are adjusted, grinding the mixture, optionally together with a portion of one or more external additives to be added to the mixture, classifying the ground mixture, mixing the classified mixture with one or more external surface additives to obtain the single toner having the desired melt flow index value, and repeating the steps for each additional differently colored toner.
摘要翻译：设计用于在图像显影装置中形成彩色图像一起使用的至少三种不同颜色的调色剂具有基本上相同的熔体流动指数值。通过基本上匹配一组调色剂的至少三种调色剂的熔体流动指数值，已经发现所得到的彩色图像具有总体优异的图像质量，即没有任何光泽条纹的优异的整体光泽度。调色剂可以在仔细控制的方法中具有基本上相同的熔体流动指数值，包括通过在混合物出口时将至少一种粘合剂和至少一种着色剂进料到混合装置中形成混合物来形成单一调色剂从混合装置测量混合物与至少一个监测装置的流变性质，并将所测量的流变性能与所测量的流变性能必须在其中的目标性能范围进行比较，以使单个调色剂达到所需的熔体流动指数值，其中如果测量表明流变性能在目标特性范围之外，则调节至少一种粘合剂或至少一种着色剂进入混合装置的进料量，任选地与一部分添加到混合物中的外部添加剂，将研磨的混合物分级，将分级的混合物与一个或多个外表面添加剂以获得具有所需熔体流动指数值的单一调色剂，并且对于每种附加的不同颜色的调色剂重复步骤。

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