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    Copying system featuring alternate developing and cleaning of successive image areas on photoconductor
    1.
    发明授权
    Copying system featuring alternate developing and cleaning of successive image areas on photoconductor 失效
    复制系统特色开发和清洁光电转换器上的成像图像区域

    公开(公告)号：US3637306A

    公开(公告)日：1972-01-25

    申请号：US3637306D

    申请日：1970-12-02

    Applicant: IBM

    Inventor： COOPER LEON M

    IPC: G03G9/10 ,  G03G15/09 ,  G03G15/30 ,  G03G21/00 ,  G03G15/00

    CPC classification number: G03G15/09 ,  G03G9/10 ,  G03G15/307 ,  G03G21/0047 ,  G03G2221/0005

    Abstract: Electrophotographic copying apparatus has charging, imaging, transferring, precleaning, and erasing facilities in a conventional sense but incorporates a combined developingcleaning unit that is operable to perform either function at the proper time during the copying sequence. A first version incorporates a photoconductor drum structure surrounded with the necessary electrophotographic elements including a single magnetic brush developer-cleaner unit, the drum structure preferably having an odd number of image areas, such as three. Another version incorporates a photoconductor belt also having provision for an odd number of image areas and movable past the stations. For single copy operation, alternate image positions are used for copying with cleaning occurring on the positions between. With the operator changing masters, this delay is not noticeable. With an automatic document feeder, the throughput rate is half of the continuous copy rate. For continuous copy, every image position is used and cleaning is suspended until the end of the run at which time a full cycle cleaning operation is initiated. If the run is long and the copy degrades, intermediate cleanup cycles can be included as often as necessary. Conveniently, a magnetic brush element forms a contacting surface for conveying toner onto the photoconductor surface during developing and away from the photoconductor surface during cleaning. Appropriate changes in biasing of the brush are made during operation.

    Abstract translation: 电子照相复印设备具有传统意义上的充电，成像，传输，预清洗和擦除设备，但是包括组合的显影清洁单元，其可操作以在复印顺序期间的适当时间执行任一功能。 第一版本包括用必要的电子照相元件包围的感光鼓结构，包括单个磁刷显影剂清洁器单元，该鼓结构优选地具有奇数个图像区域，例如三个。 另一个版本包括光电导体带，其还提供奇数个图像区域并且可移动通过电台。 对于单次复印操作，替代图像位置用于复印，清洁发生在其间的位置。 随着操作员改变主人，这种延迟并不明显。 使用自动文档进纸器，吞吐速率是连续复印速度的一半。 对于连续复印，使用每个图像位置，并且清洁被暂停，直到运行结束，此时开始全周期清洁操作。 如果运行时间长，复制降级，则可以根据需要频繁地包括中间清理周期。 方便地，磁刷元件在清洁期间在显影和远离感光体表面期间形成用于将调色剂输送到感光体表面上的接触表面。 在操作期间进行刷子的偏置的适当改变。

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