Laser beam printer
    1.
    发明授权
    Laser beam printer 失效
    激光束打印机

    公开(公告)号:US4712118A

    公开(公告)日:1987-12-08

    申请号:US897818

    申请日:1986-08-19

    CPC分类号: B41J13/26 G06K15/1219

    摘要: A laser beam printer includes: a recording medium for forming an image; a scanning unit for scanning a beam modulated by an image signal on the recording medium; a beam detector for detecting the position of the beam scanned by the scanning unit and outputting a synchro signal which defines the record start position on the recording medium; a sheet position detector for detecting the position, in the direction of scanning the beam, of a sheet to which the image formed on the recording medium is transferred; and a controller for controlling the output timing of the synchro signal in accordance with the position of a sheet detected by the sheet position detector.

    摘要翻译: 激光束打印机包括:用于形成图像的记录介质; 扫描单元,用于扫描由记录介质上的图像信号调制的光束; 光束检测器,用于检测由扫描单元扫描的光束的位置,并输出定义记录介质上的记录开始位置的同步信号; 纸张位置检测器,用于检测在扫描光束的方向上转印形成在记录介质上的图像的纸张的位置; 以及控制器,用于根据由片材位置检测器检测到的片材的位置来控制同步信号的输出定时。

    Safety apparatus for detecting an abnormality of power control element
    4.
    发明授权
    Safety apparatus for detecting an abnormality of power control element 失效
    用于检测功率控制元件的异常的安全装置

    公开(公告)号:US4882782A

    公开(公告)日:1989-11-21

    申请号:US96806

    申请日:1987-09-10

    IPC分类号: G05F1/10 H02H7/12

    CPC分类号: H02H7/12

    摘要: A safety apparatus for an AC control circuit has a bidirectional thyristor, a photocoupler for detecting a load current, a transistor and a self-hold circuit for checking if a detection output from the photocoupler indicates a failure of the thyristor to commutate or lack of a trigger signal and another transistor which is turned on to blow a fuse and to cut off the load current when a failure of the thyristor to commutate or lack of the trigger signal is detected.

    摘要翻译: 用于AC控制电路的安全装置具有双向晶闸管,用于检测负载电流的光电耦合器,晶体管和自保持电路,用于检查来自光电耦合器的检测输出是否指示晶闸管的故障转换或缺少 触发信号和另一个导通的熔断晶体管,以便在检测到可控硅整流或触发信号不足时,断开负载电流。

    Developer bearing member, developing apparatus, and image forming apparatus
    6.
    发明授权
    Developer bearing member, developing apparatus, and image forming apparatus 有权
    显影剂承载部件,显影装置和图像形成装置

    公开(公告)号:US08521071B2

    公开(公告)日:2013-08-27

    申请号:US12958351

    申请日:2010-12-01

    IPC分类号: G03G15/08

    摘要: A developer bearing member includes a base body, a surface layer, and a plurality of concave portions provided on the surface layer, wherein a resistance value of the surface layer is 102 Ω·cm to 108 Ω·cm, the number of the concave portions per unit area is 2250/mm2 to 12254/mm2, a major diameter of an opening of the concave portion is 8 μm to 20 μm, a depth of the concave portion is 2 μm to 5 μm, a dimensional tolerance of the major diameter is 0.5 μm or less, and a dimensional tolerance of the depth is 0.5 μm or less.

    摘要翻译: 显影剂承载构件包括基体,表面层和设置在表面层上的多个凹部,其中表面层的电阻值为102Ω·cm至108Ω·cm,凹部的数量 每单位面积为2250 / mm 2〜12254 / mm 2,凹部的开口的大径为8μm〜20μm,凹部的深度为2μm〜5μm,长径的尺寸公差为 0.5μm以下,深度的尺寸公差为0.5μm以下。

    Apparatus using a rotating polygon to form an image, the apparatus
determining the polygon rotates stably at a predetermined rotation
number
    8.
    发明授权
    Apparatus using a rotating polygon to form an image, the apparatus determining the polygon rotates stably at a predetermined rotation number 失效
    使用旋转多边形成图像的装置,确定多边形的装置以预定转数稳定地旋转

    公开(公告)号:US5883659A

    公开(公告)日:1999-03-16

    申请号:US471865

    申请日:1995-06-07

    摘要: An image forming apparatus includes a light beam generator for generating a light beam, a rotational polygon mirror for scanning the light beam generated by the light beam generator across a member to be illuminated, a rotation detector for detecting whether or not the rotational polygon mirror rotates at a predetermined rotation number for an image formation, and a determining device for determining whether or not the rotational polygon mirror rotates at the predetermined rotation number stably in accordance with an output from the rotation detector.

    摘要翻译: 一种图像形成装置包括:用于产生光束的光束发生器,用于扫描由光束发生器产生的光束穿过待照亮部件的旋转多面镜;旋转检测器,用于检测旋转多面镜是否旋转 以及用于确定旋转多面镜是否根据旋转检测器的输出稳定地以预定转数旋转的确定装置。