Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
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Volume 38, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • Color Scanner and Its Recent Advancement
    Yoshio ONO
    1975 Volume 38 Issue 4 Pages 335-342
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.335
    JOURNAL FREE ACCESS
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    Color scanners which are now widely used for color reproduction processes in the graphic arts industry are reviewed. Classifications of color scanners and general characteristics of electronic color separation method are briefly given. Various image processing functions of color scanners are explained, and outlines of mechanical and electronic constructions of scanners, especially of direct screening color scanners are described. A comparison table on main aspects of photographic and electronic color reproduction processes is given. Possibilities of future technological development are also briefly discussed.
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  • The Analytical Study of Animal Motion on Animated Film (I)
    Shigeru OHE
    1975 Volume 38 Issue 4 Pages 343-359
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.343
    JOURNAL FREE ACCESS
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    For analyzing the phenomenon of animal motion, first of all, the author tried to give chase to the movement of a human being and a horse with 16 mm cine-camera.
    And, it was studied to express the measurement system for the element of motion from the filming image.
    As the result, it will be possible to get the motion value by developing the description of the movement of the various joints of a human's and horse's bodies.
    The author was interested in the study of analyzing a movement as the mation on line animation of the figure of animals, and next it was tried to use the experimental formula for the change of perspective value of the backward (it is an opposite side for the shooting camera) and skew motion from the three dimensional standpoint of the image through the photographic lens.
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  • Reaction Mechanisms of Free Radical Photosensitive Materials.(I)
    Takuji MIWA, Toshio ISHIKAWA
    1975 Volume 38 Issue 4 Pages 360-370
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.360
    JOURNAL FREE ACCESS
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    On diphenylamine-carbon tetrabromide system, various reaction intermediates were observed in their n-hexane, benzene and methanol solutions. 1) diphenylamine cation radical which has a absorptionmaximum at 640, 650 and 670 nm in n-hexane, benzene and methanol respectively. 2) triphenylmethane type radical which has absorption maximum at 655 and 645 nm in n-hexane and benzene. 3) other intermediates. 3-1) diphenylmethane type radical which has absorption maximum at about 450 nm, 3-2) phenylmethane type radical which absorbs near ultraviolet light around 350 nm, 3-3) bromine radical which has a absorption maximum at about 460 nm, 3-4) etc.
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  • Studies on the Photographic Fixing Process with Thiocyanate Salts (VI)
    Dissolving Property of the Silver Halide Disc in Thiocyanate Salt Solution
    Masami KAWASAKI, Etsuo FUJII, Zyunichi OKUBO
    1975 Volume 38 Issue 4 Pages 371-378
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.371
    JOURNAL FREE ACCESS
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    The amounts of dissolved silver bromide and silver chloride disc with thiocyanate or thiosulfate solution were measured by gravimetric method.
    At the constant agitation speed (2, 500 rpm), the amount of dissolved silver bromide disc with 1 M ammonium thiosulf ate solution was more than that with 2 M ammonium thiocyanate solution at 25°C, but the above mentioned order on the dissolved amounts was reversed at 5°C.
    The amounts of dissolved silver halide with 1 M ammonium thiosulf ate solution were more than that of 2 M ammonium thiocyanate solution for 1, 000-4, 000 rpm agitation speeds at 25°C.
    The dissolving speed of silver halide disc with the solution was found to be first-order up to a certain dissolving time.
    The value of activation energies for dissolving with silver halide disc were obtained 5-7 kcal/mol by ammonium thiosulfate and also 3-6 kcal/mol by ammonium thiocyanate.
    From these results, it was indicated that the dissolving of silver halide disc with the fixing solution was diffusion controlled at lower agitation speeds.
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  • Color Reproduction in Color Photogsaphy
    Souichi KUBO
    1975 Volume 38 Issue 4 Pages 379-387
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.379
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  • [title in Japanese]
    1975 Volume 38 Issue 4 Pages 390-398
    Published: July 31, 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.390
    JOURNAL FREE ACCESS
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  • Erratum
    1975 Volume 38 Issue 4 Pages 417
    Published: 1975
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.38.4_417
    JOURNAL FREE ACCESS
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