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    • 4. 发明授权
    • Development systems for magnetic toners and toners having reduced magnetic loadings
    • 具有降低磁负载的磁性调色剂和调色剂的开发系统
    • US06766136B2
    • 2004-07-20
    • US10403539
    • 2003-03-31
    • Thomas A. JadwinJohn F. CrichtonRobert D. FieldsEric C. Stelter
    • Thomas A. JadwinJohn F. CrichtonRobert D. FieldsEric C. Stelter
    • G03G9083
    • B82Y15/00G03G9/083G03G9/097G03G9/09708G03G9/09733G03G13/09G03G2215/0013
    • Development systems and methods for developing using magnetic toner are disclosed. The present invention further discloses developers used in development systems as well as the toner used in developer for magnetic ink character recognition printing. With respect to the development system, a development system is disclosed which includes a supply of dry developer mixture which contains magnetic toner particles and hard magnetic carrier particles. The development system further includes a non-magnetic, cylindrical shell for transporting the developer between the supply and the development zone, wherein the shell can be rotatable or stationary. A rotating magnetic core of a pre-selected magnetic field strength and means for rotating at least the magnetic core to provide for the transport of the toner particles from the shell to an electrostatic image also provided as part of the development system. A method for developing electrostatic image with magnetic toner is further disclosed, for example, involving the above-described development system. Magnetic toner particles having a low magnetic loading such as on the order of 28% by weight or less, based on the weight of the toner are further described wherein these magnetic toners can include a spacing agent on the surface of the magnetic toner particles. A developer is further disclosed which contains the magnetic toner particles of the present invention with hard magnetic carrier particles. Other developer compositions are also described.
    • 公开了使用磁性调色剂显影的显影系统和方法。 本发明还公开了用于显影系统中的显影剂以及用于磁性墨水字符识别印刷的显影剂中的调色剂。 关于显影系统,公开了一种开发系统,其包括供应含有磁性调色剂颗粒和硬磁性载体颗粒的干燥显影剂混合物。 显影系统还包括用于在供应和显影区域之间输送显影剂的非磁性圆柱形壳体,其中壳体可旋转或静止。 具有预选磁场强度的旋转磁芯和用于至少旋转磁芯以提供将调色剂颗粒从外壳传送到静电图像的装置,还提供作为显影系统的一部分。 例如涉及上述显影系统的方法进一步公开了一种用磁性调色剂显影静电图像的方法。 进一步描述了基于调色剂的重量,具有低28重量%或更少的磁载荷的磁性调色剂颗粒,其中这些磁性调色剂可以在磁性调色剂颗粒的表面上包括间隔剂。 进一步公开了含有本发明的磁性调色剂颗粒与硬磁性载体颗粒的显影剂。 还描述了其它显影剂组合物。
    • 6. 发明授权
    • Functionality switching for MICR printing
    • MICR打印功能切换
    • US06909856B2
    • 2005-06-21
    • US10669732
    • 2003-09-24
    • John F. Crichton
    • John F. Crichton
    • G03G15/00
    • G03G15/0121G03G15/50G03G2215/0013
    • An electrographic printing machine (10) operable in combination with an installed one of a plurality of developing, or toning, stations (38a, 38b), is disclosed. Each of the plurality of toning stations (38a, 38b) is associated with a toner type, with one of the toning stations (38a) associated with Magnetic Ink Character Recognition (MICR) toner. Each toning station (38a, 38b) has an indicator (50), for example a resistor, that can be interrogated or measured by the printing machine (10) when installed, so that the printing machine (10) is aware of the type of toner to be used. If a MICR toning station (38a) is installed, a set of process setpoints and parameters are used that optimize MICR printing; if a normal toning station (38b) is installed, a different set of process setpoints and parameters adapted for the normal toner is used. Also in response to detecting that the MICR toning station (38a) is installed, the printing machine (10) enables certain security functions, such as privilege-level control of MICR fonts and secure files, and also such as disabling features such as automatic reprinting.
    • 公开了一种电动印刷机(10),其与可安装的多个显影或调色台(38a,38b)中的一个组合操作。 多个调色台(38a,38b)中的每一个与调色剂类型相关联,其中一个调色台(38a)与磁墨水墨字符识别(MICR)调色剂相关联。 每个调色台(38a,38b)具有指示器(50),例如电阻器,其可以在安装时被打印机(10)询问或测量,使得打印机(10)知道 要使用的墨粉类型。 如果安装了MICR调色台(38a),则使用一组优化MICR打印的过程设定点和参数; 如果安装了正常的调色台(38b),则使用适用于普通调色剂的不同组的过程设定点和参数。 此外,为了响应检测到MICR调色台(38a)的安装,打印机(10)启用某些安全功能,如MICR字体和安全文件的特权级别控制,还可以禁用诸如自动 转载。