Developing device for an image forming apparatus
    23.
    发明授权
    Developing device for an image forming apparatus 失效
    用于图像形成装置的显影装置

    公开(公告)号:US5489747A

    公开(公告)日:1996-02-06

    申请号:US430473

    申请日:1995-04-28

    IPC分类号: G03G15/09 G03G15/08

    摘要: A developing device for an image forming apparatus and having a relatively hard first developing roller formed with fine N-S magnetic poles on the periphery thereof, and a relatively soft second developing roller for conveying toner electrostatically transferred thereto from the first roller toward a photoconductive drum. The toner is charged by friction while being passed through between the first roller and a blade, and then magnetically deposited on the first roller. At a position where the first and second rollers contact each other, only the adequately charged toner is electrostatically transferred from the first roller to the second roller. The second roller conveys the toner toward the drum. As a result, the toner is brought to a developing position in an amount corresponding to a saturation or maximum image density. The second roller is made up of a metallic conductive core, a semiconductive foam layer, and an insulative surface layer implemented by resin. The real resistance between the core and the surface is selected to be higher than 10.sup.3 .OMEGA. but lower than 10.sup.13 .OMEGA.. The ratio of the real resistance associated with the maximum temperature change to the real resistance at normal temperature is selected to be less than or equal to 4 in absolute value.

    摘要翻译: 一种用于图像形成装置的显影装置,并且具有在其周边上形成有细微N-S磁极的相对硬的第一显影辊,以及相对柔软的第二显影辊,用于将从第一辊静电转印的调色剂传送到感光鼓。 调色剂在通过第一辊和叶片之间时通过摩擦进行充电,然后磁性沉积在第一辊上。 在第一和第二辊彼此接触的位置处,只有充足电的调色剂从第一辊静电转移到第二辊。 第二辊将墨粉朝向滚筒传送。 结果,调色剂以对应于饱和度或最大图像浓度的量被带到显影位置。 第二辊由金属导电芯,半导体泡沫层和由树脂实现的绝缘表面层组成。 核心和表面之间的实际电阻选择为高于103欧米茄但低于1013欧米茄。 与最高温度变化相关联的实际电阻与常温下的实际电阻的比值选择为绝对值小于或等于4。

    Measuring the interval of a signal using a counter and providing the value to a processor
    27.
    发明授权
    Measuring the interval of a signal using a counter and providing the value to a processor 失效
    使用计数器测量信号的间隔并将其提供给处理器

    公开(公告)号:US07360109B2

    公开(公告)日:2008-04-15

    申请号:US11085035

    申请日:2005-03-22

    申请人: Hiroshi Saitoh

    发明人: Hiroshi Saitoh

    IPC分类号: G06F1/00

    CPC分类号: G06F1/04

    摘要: The present invention aims to be capable of properly measuring the cycle of an external signal even where a timer clock and a CPU clock are operated asynchronously. A timer circuit comprises a timer counter which counts a generation interval of an external signal in sync with the timer clock, a first timer register which fetches therein a counted value of the timer counter in sync with the timer clock, a second timer register which fetches therein the value of the first timer register in sync with the CPU clock, an edge detection circuit which detects a change in the level of the external signal to thereby generate an edge detection signal, and a reload control circuit which outputs a first reload control signal for reloading the count value of the timer counter into the first timer register in sync with the timer clock in accordance with the edge detection signal, and outputs a second reload control signal for reloading the value of the first timer register fetched therein by the first reload control signal into the second timer register in sync with the CPU clock, and which holds the output of the second reload control signal where the next edge detection signal is generated during the interval from after the generation of a first edge detection, the CPU reads the contents of the second timer register, and outputs the second reload control signal after the CPU has read the contents of the second timer register.

    摘要翻译: 本发明的目的在于能够适当地测量外部信号的周期,即使在定时器时钟和CPU时钟异步操作的情况下也是如此。 定时器电路包括定时器计数器,其与定时器时钟同步地对外部信号的产生间隔进行计数;第一定时器寄存器,其在其中取出定时器计数器的计数值与定时器时钟同步;第二定时器寄存器,其取出 其中第一定时器寄存器的值与CPU时钟同步,边缘检测电路,其检测外部信号的电平的变化从而产生边沿检测信号;以及重新加载控制电路,其输出第一重载控制信号 用于根据边缘检测信号将定时器计数器的计数值重新加载到与定时器时钟同步的第一定时器寄存器中,并且输出第二重载控制信号,用于重新加载第一定时器寄存器中通过第一重新加载获取的值 控制信号与CPU时钟同步到第二定时器寄存器中,并且其保持第二重载控制信号的输出,其中下一个边沿 在产生第一边缘检测之后的间隔期间产生检测信号,CPU读取第二定时器寄存器的内容,并且在CPU已经读取第二定时器寄存器的内容之后输出第二重新加载控制信号。

    Microphone package
    28.
    发明申请
    Microphone package 审中-公开
    麦克风包

    公开(公告)号:US20080056524A1

    公开(公告)日:2008-03-06

    申请号:US11899321

    申请日:2007-09-05

    IPC分类号: H04R19/04

    CPC分类号: H04R19/04

    摘要: A microphone package includes a housing, which has a cavity and a sound hole for allowing the cavity to communicate with the exterior, and a microphone chip, which is mounted on the mounting surface so as to detect sound within the cavity. The sound hole is opened in connection with the mounting surface and is surrounded by a projection wall projecting upwardly from the mounting surface at a prescribed position in proximity to the microphone chip.

    摘要翻译: 麦克风封装包括壳体,其具有用于允许空腔与外部连通的空腔和声孔,以及安装在安装表面上以便检测腔内的声音的麦克风芯片。 声孔与安装表面相连开,并且由靠近麦克风芯片的规定位置处从安装表面向上突出的突出壁包围着。