Electronic circuit device, method of connecting with solder and solder
for connecting gold-plated terminals
    47.
    发明授权
    Electronic circuit device, method of connecting with solder and solder for connecting gold-plated terminals 失效
    电子电路器件,连接焊料和焊料的方法,用于连接镀金端子

    公开(公告)号:US5136360A

    公开(公告)日:1992-08-04

    申请号:US563281

    申请日:1990-08-06

    摘要: An electronic circuit device comprising an electronic part having a gold-plated connecting terminal arranged thereon connected through a solder to a circuit substrate on the predetermined connecting element thereof, in which the connecting terminal of the electronic part and the solder-connected portion of the circuit substrate are constituted by an alloy composition consisting of 1.0 to 8.0 wt. % of Ag, 0.1 to 6.0 wt % of Au and the balance of Sn, is provided. The device is made by using a solder for use in connecting a gold-plated connecting terminal which consists of 1.0 to 8.0 wt % of Ag and the balance of Sn and a method of connecting an electronic part having a gold-plated connecting terminal arranged thereon to a circuit substrate, which comprises the steps of placing the electronic part and the gold-plated connected terminal so as to face each other via a solder and then melting the solder to connect and fix the connecting terminal to the circuit substrate onto the predetermined element thereof, the composition of said solder consisting of 1.0 to 8.0 wt % Ag and the balance of Sn.

    摘要翻译: 一种电子电路装置,包括电子部件,该电子部件具有通过焊料连接到其预定连接元件上的电路基板上的镀金连接端子,其中电子部件的连接端子和电路的焊接部分 基材由1.0〜8.0重量份的合金组成构成。 提供Ag的%,0.1〜6.0重量%的Au和余量的Sn。 该装置通过使用焊料制成,用于连接由1.0至8.0重量%的Ag组成的镀金连接端子和余量的Sn,以及连接其上布置有镀金连接端子的电子部件的方法 电路基板,其包括以下步骤:通过焊料将电子部件和镀金连接的端子放置成彼此面对,然后熔化焊料以将连接端子连接并固定到电路基板到预定元件 所述焊料的组成由1.0至8.0重量%的Ag和余量的Sn组成。

    Method of controlling surface potential of photoconductive element
    48.
    发明授权
    Method of controlling surface potential of photoconductive element 失效
    控制光电导元件表面电位的方法

    公开(公告)号:US5072258A

    公开(公告)日:1991-12-10

    申请号:US563344

    申请日:1990-08-07

    申请人: Masahide Harada

    发明人: Masahide Harada

    CPC分类号: G03G15/5037

    摘要: A method of controlling the surface potential of a photoconductive element included in an electrophotograpic copier or similiar image forming apparatus. When the background area of a photoconductive element is contaminated due to the shaving of the photoconductive film provided on the photoconductive element or similar type of cause, the method increases the amount of light for imagewise exposure. When the contamination is ascribable to residual potential on the surface of the photoconductor element, the method increases bias potential for development and charge potential. The method, therefore, adequately controls the background contamination ascribable to the change in the sensitivity of the photoconductive element which is in turn ascribable to different types of causes, i.e., the increase in the residual potential and the shaving of the photoconductive film or the like.

    摘要翻译: 一种控制包含在电子照相复印机或类似图像形成装置中的光电导元件的表面电位的方法。 当感光元件的背景区域由于在感光体上设置的感光膜的刮屑或类似原因而被污染时,该方法增加了成像曝光的光量。 当污染物归因于光电导体元件的表面上的残留电势时,该方法增加了用于显影和电荷电位的偏置电位。 因此,该方法可以适当地控制归因于光电导元件的灵敏度变化的背景污染物,其又归因于不同类型的原因,即光电导膜等的残留电位和剃刮的增加 。

    Delay circuit for use in electric blasting system
    49.
    发明授权
    Delay circuit for use in electric blasting system 失效
    延迟电路用于电喷射系统

    公开(公告)号:US4984519A

    公开(公告)日:1991-01-15

    申请号:US309157

    申请日:1989-02-13

    CPC分类号: F42D1/055

    摘要: A delay circuit for use in an electric blasting system including a capacitor for storing electric energy supplied from an electric blaster, an actuation circuit for detecting the stop of voltage supply from the blaster to generate an actuation signal, a circuit for generating clock pulses, a circuit for counting a predetermined number of clock pulses in response to the actuation signal to generate an igniting signal, and a switching circuit for responding to the igniting signal to discharge the electric energy stored in the capacitor through an igniting resistor, the actuation circuit having a zener diode with a threshold voltage. When the voltage supply from the blaster is stopped and the voltage across the zener diode becomes lower than the threshold voltage, the zener diode is cut-off to generate the actuation signal.

    摘要翻译: 一种用于电喷射系统的延迟电路,包括用于存储从电动发生器供应的电能的电容器,用于检测从起动器停止供电以产生致动信号的致动电路,用于产生时钟脉冲的电路, 电路,用于响应于所述致动信号计数预定数量的时钟脉冲以产生点火信号;以及开关电路,用于响应于所述点火信号,以通过点火电阻放电存储在所述电容器中的电能,所述致动电路具有 具有阈值电压的齐纳二极管。 当来自爆破器的电压停止并且齐纳二极管两端的电压变得低于阈值电压时,该齐纳二极管被切断以产生致动信号。