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 45, Issue 3
Displaying 1-6 of 6 articles from this issue
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  • [title in Japanese]
    1982 Volume 45 Issue 3 Pages 145
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.145
    JOURNAL FREE ACCESS
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  • Progress of Photography in 1981
    Yoshitada TOMODA
    1982 Volume 45 Issue 3 Pages 147-161
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.147
    JOURNAL FREE ACCESS
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    A world progress report in 1981 in the field of photographic science and technology is given. News and topics are compiled by referring journals and periodicals published in foreign countries as well in Japan in 1981. Items are as follows: industrial activities, silver halide photographic materials, color photography, electrophotography, photographic theory, photographic processing, applications of photography, photographic systems, cameras and equipments.
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  • Study on the Very Dark Color Space (I)
    Improved Metric Lightness Function for Dark Color Space
    Tomo OHSHIMA
    1982 Volume 45 Issue 3 Pages 162-167
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.162
    JOURNAL FREE ACCESS
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    Through the experimentation of the Munsell Value Function Curve, I found the point of inflexion of the curve.
    It is the aim of this paper to examine the degree of agreement which can be reached by using a different one-constant-approximation of the Munsell Renotation Value Function for CIE (Y)<1%.
    As a result of many considerations, the Munsell Value Function may be replaced by a straight line passing through the original point and the point where the Munsell Value Function Curve V=0.847.
    The color difference system by this Lightness Function will be discussed in the next papar.
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  • Surface Photovoltage Spectroscopy of Dyed Zinc Oxide
    Young Soon KIM, Yasusuke TAKAHASHI, Toshibumi SAKATA
    1982 Volume 45 Issue 3 Pages 168-174
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.168
    JOURNAL FREE ACCESS
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    Surface Photovoltage Spectroscopy (SPS) has been extensively employed in the determination of the energy positions and surface states of ZnO and dye-sensitized ZnO.
    At room temperature, the energy trapping level Et1 value of ZnO showed the experimental results of 1.122 eV (λ=1100 nm) by SPS method. In the case of the acid type or the Na salt type dye of triphenylmethanes, the presence of the adsorbed dye on ZnO showed the change of Et1 value into the Et2 value of dyed ZnO spectrum which shifted towards a longer wavelength and Et2 is 0.989 eV (λ =1250 nm).
    An infrared photovoltage value (VIP) of the acid type dye shows larger VIP than that of the Na salt type dye due to the high photo-desorption of adsorbed oxygen ion from the ZnO surface. The hydrophilic characteristic of the Na salt type dye seems to responsible for its low VIP value. The H2O molecules of moisture seem to act on the recombination center or the trapping center in the zinc oxide surface.
    Finally, the desensitization of the Na salt type dye for the intrinsic photoresponse of zinc oxide seems to be related and explained by the hydrophilic characteristic of the Na salt type dye.
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  • Studies on Silver Recovery from Photographic Processing Effluents by The Graft Glass Fiber (I)
    Adsorption of Silver by The Thiourea Modified Graft Glass Fiber
    Shigetoshi TSUTSUMI, Ryutoku YOSOMIYA
    1982 Volume 45 Issue 3 Pages 175-181
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.175
    JOURNAL FREE ACCESS
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    Various kinds of the thiourea modified graft glass fiber were prepared and the adsorption of Ag and some metal ions was studied. Graft polymerization of styrene glycidylmethacrylate onto glass fiber was carried out with cumene hydroperoxide as a initiater at 80°C in a sealed tube in nitrogen atmosphere. The thiourea modified graft glass fiber was prepared by heating in 5.5% thiourea aqueous solution for 4 hours at 80°C.
    (1) The adsorption of Ag ions by the fiber had a large dependency on its starting monomer composition. The optimum monomer composition to lead maximal adsorptive activity was 25 mole% of styrene and 75 mole% of glycidylmethacrylate.
    (2) The adsorption of Ag ions increased with increasing of percent grafting of the fiber and the temperature, and it was shown a maximum at pH 4.
    (3) The activation energy of the adsorption of Ag ions was 10.21 Kcal/mol.
    (4) The adsorption of Ag ions at pH 6 could be expressed by the Freundlich isotherm.
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  • [title in Japanese]
    1982 Volume 45 Issue 3 Pages 189-198
    Published: June 28, 1982
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.45.189
    JOURNAL FREE ACCESS
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