Journal of the Horological Institute of Japan
Online ISSN : 2432-1915
Print ISSN : 0029-0416
ISSN-L : 0029-0416
Volume 116
Displaying 1-7 of 7 articles from this issue
  • Article type: Cover
    1986 Volume 116 Pages Cover1-
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    Download PDF (63K)
  • Article type: Cover
    1986 Volume 116 Pages Cover2-
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    Download PDF (63K)
  • Kunitaru GOTO, Hiroo FUJITA, Heiichi FUJINUMA, Tetsuro ISHIZUKA
    Article type: Article
    1986 Volume 116 Pages 1-14
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    An ultraprecision surface profile measuring instrument for measuring surface roughness, microangle, profile or the like has been put to practical use as an on-line measuring instrument for a production line.This instrument is based on the principle of optical-heterodyne interferometry using a laser and an acousto-optic device. The resolutions of surface. roughness and microangle are on the order of 0.001μm and 0.001°, respectively. This instrument is scarcely affectcld by the influences of vibration and reflection factor of the sample surface. Therefore, stable measurements can be made, and surf ace profiles can be obtained by an easy data processing method.
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  • Mayumi IKEJIRI, Hidetoshi OHTO, Kunio KOIKE
    Article type: Article
    1986 Volume 116 Pages 15-31
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    We developed and put into the market an electronic tide calculator so called "Fishing Master", as an item of the Sports Watches Series. Fishing Master calculates future and past tides in height as wel1 as in time of occurrence, and provides information about the specific fishing spots. This information can be called out on the display by a simple operation. Fishing Master is designed also Compactly to fit in a shirt pocket. A 4-bit low power CPU controls the tide processing unit which consists of a 8-bit CPU, a 256k-bit ROM, a 16k-bit SRAM, and an address decorder. The dual-CPU system greatly reduces power consumption of the whole instrument.
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  • Yasuhiro SAKURAI
    Article type: Article
    1986 Volume 116 Pages 32-37
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    It is necessary to equalize the temperature characteristics of MOS resistance with diffusion resittance in order to improve the temperature characteristcs of the battery detector which is composed of the two resistances connected in series to divide the battery voltage. The equalization was achieved here by controlling the carrier concentration of the difusion resistance. It is confirmed that the improved battery detector has superior characteristics being independent of the ambient temperature in a range from -20℃ to +80℃ at least.
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  • Shuji NAKATA
    Article type: Article
    1986 Volume 116 Pages 38-63
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    Micro joining technology is one of most important and fundamental technologies for joining, assembling the electronic devices, parts and equipments in intimate relation with assembling technology. Micro joining processes usually involve several joining processes such as ultra-sonic joining, thermo-compression joining, thermo-sonic joining, micro-soldering and so on. These joining processes are described with joining mechanism, funda-mental or some interesting phenomena and its application on assembling monolithic or hybrid integrated circuit and print circuit board. Furthermore, several assembling processes such as wire bending, TAB, Flip Chip, die bonding are given in relation with joining phenomena. Finally, several important subjects on micro joining in future technology are given with the tend of electronic parts and equipments and assembly technology.
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  • [in Japanese]
    Article type: Article
    1986 Volume 116 Pages 64-68
    Published: March 20, 1986
    Released on J-STAGE: November 09, 2017
    JOURNAL FREE ACCESS
    Download PDF (378K)
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