High-voltage a.c. power supply with automatically variable d.c. bias
current
    1.
    发明授权
    High-voltage a.c. power supply with automatically variable d.c. bias current 失效
    高压交流 电源自动变化直流 偏置电流

    公开(公告)号:US4042874A

    公开(公告)日:1977-08-16

    申请号:US617132

    申请日:1975-09-26

    CPC分类号: G03G15/0266 H02M7/53806

    摘要: A circuit for concurrently producing regulated high-voltage a.c. current and automatically varying d.c. current on one output line, where all adjustment and regulation is accomplished in low-voltage circuits, power supply being particularly useful as the power source for copier and duplicator corotrons. The basic wave shape is a rectangular wave which is amplified and regulated for application as the a.c. input to a corotron. The corotron itself is used as the rectifier for the d.c. bias current, and while the nominal d.c. bias is fixed by adjusting the duty cycle of the rectangular wave to a fixed value, the actual d.c. bias current will vary in accordance with atmospheric conditions and paper thickness, which is desirable for the proper operation of copier and duplicator corotrons. The adjusted duty cycle of the rectangular wave determines the nominal d.c. bias current. This is because the part of the corotron input wave shape which has the shorter duration must have the higher amplitude, and current in the corotron increases with voltage.

    摘要翻译: 用于同时生产调节高压电流的电路 当前和自动变化直流 在一条输出线上的电流,其中所有调节和调节都在低压电路中完成,电源作为复印机和复印机电光源的电源特别有用。 基本波形是矩形波,其被放大和调节用于作为直流电。 输入到科罗龙。 corotron本身用作直流电的整流器。 偏置电流,而标称直流电流。 通过将矩形波的占空比调整到固定值,实际直流电压固定偏置。 偏置电流将根据大气条件和纸张厚度而变化,这对于复印机和复印机corotron的正确操作是理想的。 矩形波的调整占空比决定了标称直流。 偏置电流。 这是因为具有较短持续时间的corotron输入波形的一部分必须具有较高的幅度,并且corotron中的电流随着电压而增加。

    Electrostatographic reproduction machine having a motion-defect-free cleaning method and assembly

    公开(公告)号:US06430387B1

    公开(公告)日:2002-08-06

    申请号:US09742203

    申请日:2000-12-20

    IPC分类号: G03G2100

    CPC分类号: G03G21/0005

    摘要: A motion-defect-free assembly and a method of minimizing cleaning apparatus induced motion quality disturbances in a moving belt photoreceptor of a toner image reproduction machine are provided. The assembly for practicing the method includes at least one resilient member located to each side of the moving belt photoreceptor at a desired belt cleaning station along a path of movement of the belt photoreceptor, and a cleaning apparatus that is mounted at the cleaning station and that includes at least one separately moveable cleaning member. The cleaning apparatus also includes a moveable frame having frame locating members, and the at least one separately moveable cleaning member. The motion-defect-free assembly also includes a drive and control system for first moving the moveable frame into contact with each of the locating members and for then separately moving, relative to the moveable frame, the at least one separately moveable cleaning member into contact and cleaning engagement with the moving belt photoreceptor, thereby minimizing cleaning apparatus induced motion quality disturbances in the moving belt photoreceptor.

    Transfer-fusing speed compensation
    3.
    发明授权
    Transfer-fusing speed compensation 失效
    传输熔断速度补偿

    公开(公告)号:US4017067A

    公开(公告)日:1977-04-12

    申请号:US706996

    申请日:1976-07-20

    IPC分类号: B65H29/24 G03G15/00 B65H29/54

    摘要: In an electrostatographic copier wherein the fuser rolls are positioned closer than the dimensions of the copy sheet from the image transfer area, speed mismatch compensation between the fuser roll nip and the initial image support surface is provided by intentionally driving the fuser roll nip at a different pre-set velocity to form a buckle in the intermediate portion of the copy sheet controlled by selective cyclic reductions in the vacuum applied to a vacuum chamber sheet guide surface between the fuser nip and the initial image support surface, wherein the vacuum guide is in two areas, one of which is provided with a vacuum by the other, but is cyclically atmospherically vented.

    摘要翻译: 在其中定影辊定位成比图像转印区域的复印纸的尺寸更靠近的静电复印机中,通过有意地以不同的方式驱动定影辊辊隙来提供定影辊辊隙和初始图像支撑表面之间的速度失配补偿 预设速度在复印纸的中间部分形成带扣,通过选择性地循环减少施加到定影辊隙和初始图像支撑表面之间的真空室纸张引导表面的真空度进行控制,其中真空引导件处于两个 其中一个由另一个提供真空,但周期性地大气排放。

    Apparatus and method for reduced photoreceptor impact by a retractable
cleaner
    4.
    发明授权
    Apparatus and method for reduced photoreceptor impact by a retractable cleaner 失效
    通过可伸缩清洁器减少感光体冲击的装置和方法

    公开(公告)号:US5930575A

    公开(公告)日:1999-07-27

    申请号:US934581

    申请日:1997-09-22

    IPC分类号: G03G21/10 G03G21/00

    CPC分类号: G03G21/0005

    摘要: An apparatus, method and printing machine that utilizes a ramped backer and/or a shock absorbing material in a cleaner subsystem to reduce or prevent photoreceptor motion quality disturbances. The shock absorbing material prevents an instantaneous high impact force between the spacer wheel and the photoreceptor backer bar that can cause photoreceptor motion quality disturbance. The ramped backer prevents the instantaneous deceleration of the spacer wheel with the backer that causes motion quality disturbance due to the shaking of the photoreceptor belt from the impact on contact. The combination of the shock absorbing material and the ramped backer create a preferred embodiment to prevent photoreceptor motion quality disturbance by the cleaner system.

    摘要翻译: 一种在清洁器子系统中利用斜坡衬垫和/或减震材料以减少或防止感光体运动质量扰动的装置,方法和印刷机。 冲击吸收材料防止间隔轮和感光器支撑杆之间的瞬间高冲击力,这可能导致感光体运动质量的干扰。 倾斜的支撑件防止间隔轮与支撑件的瞬时减速,由于感光鼓从接触的冲击而引起的运动质量扰动。 冲击吸收材料和倾斜支撑件的组合产生了一个优选实施例,以防止感光体运动质量受到清洁器系统的干扰。

    Light collector for an LED array
    5.
    发明授权
    Light collector for an LED array 有权
    LED阵列的集光器

    公开(公告)号:US06320182B1

    公开(公告)日:2001-11-20

    申请号:US09451410

    申请日:1999-11-30

    IPC分类号: G02B2710

    摘要: A light collector for directing light to a concentrated area on a target surface such as for use with a linear LED array used as an erase lamp in an electrophotographic printer. The collector includes a compound cylinder lens supported by a pair of reflecting members. The reflecting members reflect light rays from the LED array to the cylinder lens. The cylinder lens includes a lower surface for capturing the reflected light rays and a tongue extending from the lower surface for capturing light rays directly from the LED array. The cylinder lens directs and concentrates the captured light rays in a narrow line on a target surface. A plurality of cross-ribs extend between the first and second reflecting members to specularly reflect light beams from the LED array.

    摘要翻译: 用于将光引导到目标表面上的集中区域的光收集器,例如用于在电子照相打印机中用作擦除灯的线性LED阵列。 收集器包括由一对反射构件支撑的复合柱面透镜。 反射构件将来自LED阵列的光线反射到柱面透镜。 柱面透镜包括用于捕获反射光线的下表面和从下表面延伸的用于从LED阵列直接捕获光线的舌头。 柱面透镜将捕获的光线引导并集中在目标表面上的窄线中。 多个横肋在第一和第二反射构件之间延伸以镜面地反射来自LED阵列的光束。

    Light collector for an LED array
    6.
    发明授权
    Light collector for an LED array 有权
    LED阵列的集光器

    公开(公告)号:US06115184A

    公开(公告)日:2000-09-05

    申请号:US192074

    申请日:1998-11-13

    IPC分类号: G02B17/08 G02B27/10

    CPC分类号: G02B19/0066 G02B19/0028

    摘要: A light collector for directing light to a concentrated area on a target surface such as for use with a linear LED array used as an erase lamp in an electrophotographic printer. The collector includes a compound cylinder lens supported by a pair of reflecting members. The reflecting members reflect light rays from the LED array to the cylinder lens. The cylinder lens includes a lower surface for capturing the reflected light rays and a tongue extending from the lower surface for capturing light rays directly from the LED array. The cylinder lens directs and concentrates the captured light rays in a narrow line on a target surface.

    摘要翻译: 用于将光引导到目标表面上的集中区域的光收集器,例如用于在电子照相打印机中用作擦除灯的线性LED阵列。 收集器包括由一对反射构件支撑的复合柱面透镜。 反射构件将来自LED阵列的光线反射到柱面透镜。 柱面透镜包括用于捕获反射光线的下表面和从下表面延伸的用于从LED阵列直接捕获光线的舌头。 柱面透镜将捕获的光线引导并集中在目标表面上的窄线中。