Apparatus for inspection of packaged printed circuit boards
    112.
    发明授权
    Apparatus for inspection of packaged printed circuit boards 失效
    用于检查封装印刷电路板的装置

    公开(公告)号:US5489985A

    公开(公告)日:1996-02-06

    申请号:US181586

    申请日:1994-01-14

    摘要: There is provided an apparatus of inspecting a packaged state by scanning a packaged printed circuit board with a fine light beam and detecting reflection beams of the fine light beam in a plurality of directions. A fine light beam emitted from a light source is scanned on the packaged printed circuit board substantially vertically thereto by means of a polygon mirror and a light projection f.theta. lens. An optical path correcting system receives reflection beams scattered from the packaged printed circuit board and corrects optical paths of the reflection beams. The correction is done in such a way that reflection beams having constant directional vectors regardless of the change of the scanning position of the fine light beam are received and guided to light receiving positions complying with a height at a scanning position on a plurality of photoelectric conversion devices. Through this, the packaged state of parts is inspected at a high speed, with high accuracy and over a wide range without expanding the light receiving area of the photoelectric conversion device and without causing characteristics of triogonometrical survey to change with the scanning position.

    摘要翻译: 提供了一种通过用精细光束扫描封装的印刷电路板并且检测多个方向上的精细光束的反射光来检查封装状态的装置。 通过多面反射镜和光投射光圈透镜在基板垂直于其上的印刷电路板上扫描从光源发射的精细光束。 光路校正系统接收从封装的印刷电路板散射的反射光束并校正反射光束的光路。 以这样的方式进行校正,使得具有恒定方向向量的反射光束与精细光束的扫描位置的变化无关地被接收并被引导到符合多个光电转换处的扫描位置处的高度的光接收位置 设备。 通过这种方式,在不扩大光电转换装置的光接收面积的同时,以高精度和大范围的高速度检查部件的封装状态,并且不会导致三角测量的特征随扫描位置而变化。

    Charged particle beam apparatus and it's operating method
    113.
    发明授权
    Charged particle beam apparatus and it's operating method 失效
    带电粒子束装置及其操作方法

    公开(公告)号:US5393977A

    公开(公告)日:1995-02-28

    申请号:US69573

    申请日:1993-06-01

    CPC分类号: H01J37/265

    摘要: A specimen is scanned with an electron beam so as to generate a signal characteristic of the specimen to thereby produce an image thereof on the basis of the generated signal. A memory is provided for storing operating conditions of a scanning electron microscope which are associated with identification information for specifying the specimen. The identification information is designated so that thereby at least one operating condition corresponding to the designated identification information is read out from the memory, and the read out operating condition is automatically set so that the scanning electron microscope is operated under the set operating condition.

    摘要翻译: 用电子束扫描样本,以产生样本的信号特征,从而根据产生的信号产生图像。 提供了一种存储器,用于存储与用于指定样本的识别信息相关联的扫描电子显微镜的操作条件。 指定识别信息,从而从存储器读出与指定的识别信息相对应的至少一个操作条件,并且自动设置读出操作条件,使得扫描电子显微镜在设定的操作条件下操作。

    Process for producing homoallyl alcohols
    114.
    发明授权
    Process for producing homoallyl alcohols 失效
    高烯醇的制备方法

    公开(公告)号:US4990697A

    公开(公告)日:1991-02-05

    申请号:US422049

    申请日:1989-10-16

    IPC分类号: C07C29/60

    CPC分类号: C07C29/60

    摘要: A process for producing homoallyl alcohols of the general formula (I) ##STR1## in which either A.sup.1 or A.sup.3 represents a hydrogen atom, the other represents a single bonding along with A.sup.2 ; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and independently represents a hydrogen atom, or an alkyl or alkenyl group with or without being substituted with a hydroxyl group or an akoxyl group; and Y represents a hydrogen atom, an alkyl group or an alkenyl group, by reacting 1,3-glycols of the general formula (II) ##STR2## in which X and Y are the same or different and independently represents a hydrogen atom, an alkyl group or an alkenyl group, R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 independently represents as defined above, at a temperature in the range of 130.degree. to 250.degree. C. in liquid phase with the contact of .gamma.-alumina catalyst.

    Electrophotographic printer comprising aligned plural light emitting
devices
    115.
    发明授权
    Electrophotographic printer comprising aligned plural light emitting devices 失效
    电子照相打印机包括排列的多个发光器件

    公开(公告)号:US4987450A

    公开(公告)日:1991-01-22

    申请号:US493449

    申请日:1990-03-14

    CPC分类号: H04N1/40031 G06K15/1247

    摘要: There is disclosed an electrophotographic printer for projecting light from light source emitted according to image data onto a photoconductive body performing a mechanical scan operation in a subscan direction so as to form an image of the image data thereon, and for printing the image on a piece of printing paper using the electrophotographic process. In the electrophotographic printer, the light source comprises plural light emitting devices such as LEDs aligned in a main scan direction perpendicular to the subscan direction, and each light emitting device has a light output opening elongated in the subscan direction. Image data received from an external unit are once stored in an image memory, and the image data read therefrom are Fourier transformed. Thereafter, the Fourier transformed data are multiplied by a predetermined frequency characteristic defined by the shape of each light output opening, and data of the obtained product are Fourier inverse transformed as the image data to be printed, thereby improving a deterioration of the quality of said printed image caused when said light output opening is used.

    摘要翻译: 公开了一种电子照相打印机,用于将根据图像数据发射的光源的光投射到在副扫描方向上执行机械扫描操作的光电导体上,以便在其上形成图像数据的图像,并将图像打印在一个片上 的印刷纸。 在电子照相打印机中,光源包括在垂直于副扫描方向的主扫描方向上排列的LED等多个发光器件,并且每个发光器件具有沿副扫描方向延伸的光输出开口。 从外部单元接收的图像数据一次存储在图像存储器中,并且从其读取的图像数据被傅里叶变换。 此后,傅里叶变换数据乘以由每个光输出开口的形状限定的预定频率特性,并且获得的乘积的数据被傅里叶逆变换为要打印的图像数据,从而改善所述图像质量的劣化 当使用所述光输出开口时引起的打印图像。

    Method and apparatus for plasma cutting a workpiece
    116.
    发明授权
    Method and apparatus for plasma cutting a workpiece 失效
    用于等离子切割工件的方法和设备

    公开(公告)号:US4983807A

    公开(公告)日:1991-01-08

    申请号:US529480

    申请日:1990-05-29

    IPC分类号: B23K10/00

    CPC分类号: B23K10/006

    摘要: In a plasma cutting apparatus for cutting a workpiece with a plasma arc, a cutting torch moves relative to the workpiece. The cutting torch produces plasma arc in accordance with a cutting current supplied thereto. To improve surface roughness of the cut facet of the workpiece, a pulsating current is superimposed on a D.C. current to provide the cutting current, wherein the frequency of the pulsating current is controlled in accordance with the moving speed of the cutting torch.

    摘要翻译: 在用等离子弧切割工件的等离子切割装置中,切割炬相对于工件移动。 割炬根据供给的切割电流产生等离子体电弧。 为了改善工件的切割面的表面粗糙度,将脉动电流叠加在直流电流上以提供切割电流,其中根据割炬的移动速度来控制脉动电流的频率。

    Process for treating talc
    117.
    发明授权
    Process for treating talc 失效
    滑石粉处理方法

    公开(公告)号:US4978516A

    公开(公告)日:1990-12-18

    申请号:US385312

    申请日:1989-07-25

    摘要: A process for improving a purity and/or whiteness degree of a talc powder is disclosed. A talc powder with a particle size of about 0.8 mm or less containing impurities such as asbestos, etc. is treated with a phosphoric acid agent under heating at from 70.degree. to 250.degree. C. to remove impurities such as asbestos, etc. by utilizing the difference in the rate of dissolution as between the talc and the impurities. The phosphoric acid agent is one selected from the group consisting of phosphoric acid, pyrophosphoric acid, sodium phosphate, ammonium phosphate, calcium phosphate, sodium tripolyphosphate, sodium pyrophosphate, sodium hexametaphosphate and mixtures thereof. Thus, asbestos, which is considered to be carcinogenic, can be effectively removed from talc.

    摘要翻译: 公开了提高滑石粉的纯度和/或白度的方法。 在70〜250℃的加热下,用磷酸试剂处理含有杂质如石棉等的粒度约0.8mm以下的滑石粉,除去杂质如石棉等,利用 在滑石和杂质之间的溶解速率的差异。 磷酸试剂选自磷酸,焦磷酸,磷酸钠,磷酸铵,磷酸钙,三聚磷酸钠,焦磷酸钠,六偏磷酸钠及其混合物。 因此,被认为是致癌的石棉可以有效地从滑石中去除。

    Image signal processing method and apparatus with elongated picture
elements
    119.
    发明授权
    Image signal processing method and apparatus with elongated picture elements 失效
    具有细长图像元素的图像信号处理方法和装置

    公开(公告)号:US4959736A

    公开(公告)日:1990-09-25

    申请号:US291565

    申请日:1988-12-29

    IPC分类号: H04N1/03 H04N1/40

    摘要: An image signal processing method and apparatus includes elongated picture elements in a CCD linear image sensor to provide improved resolution. The outputs of the picture elements are converted into digital signals and are processed to compensate for the variance in photosensitivity of each of the individual picture elements.

    摘要翻译: 图像信号处理方法和装置包括CCD线性图像传感器中的细长图像元素以提供改善的分辨率。 图像元素的输出被转换为数字信号,并且被处理以补偿每个单独的图像元素的光敏度的变化。

    Method of immobilizing biochemically active substance with xanthan gum
    120.
    发明授权
    Method of immobilizing biochemically active substance with xanthan gum 失效
    用黄原胶固定生化活性物质的方法

    公开(公告)号:US4954443A

    公开(公告)日:1990-09-04

    申请号:US274604

    申请日:1988-11-18

    IPC分类号: C12N11/04

    CPC分类号: C12N11/04 Y10S530/813

    摘要: Enzymes or microorganisms are immobilized by bringing a first aqueous solution into contact with a second aqueous solution containing metal ions having a valence of 3 or more. The first solution contains enzymes or microorganisms, and at least one immobilizing agent selected from the group consisting of Xanthan gum and derivatives thereof. The immobilizing agent is thereby hardened in a state to enclose the enzymes or microorganisms. Preferably, the metal ions are iron, tin, manganese or titanium ions.

    摘要翻译: 通过使第一水溶液与含有3价以上的金属离子的第二水溶液接触来固定酶或微生物。 第一溶液含有酶或微生物,以及至少一种选自黄原胶及其衍生物的固定剂。 因此固定剂以包围酶或微生物的状态硬化。 优选地,金属离子是铁,锡,锰或钛离子。