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 46, Issue 1
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    1983 Volume 46 Issue 1 Pages 1
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.1
    JOURNAL FREE ACCESS
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  • College Education on Photography, Today
    Toshio MIYAGAWA
    1983 Volume 46 Issue 1 Pages 3-17
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.3
    JOURNAL FREE ACCESS
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    Curriculums of photography education in Japanese universities have been gradually changed by introduction of electronics and new imaging systems. Education for these new systems has been included in the curriculums for departments of electro-optics and visual communication design since the foundation of those departments. But, on the other hand, it is recognized that the education of conventional photography is still the most essential subject in the curriculums for department of photography.
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  • Electronmicroscopic Study of Photographic Development (I)
    Development Action of High Potential Physical Developer on Silver Iodo-Bromide Crystals
    Takaharu MIURA, Tomiya SAKAGUCHI
    1983 Volume 46 Issue 1 Pages 18-22
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.18
    JOURNAL FREE ACCESS
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    Photographic development mechanism was studied electron-microscopically.
    Spherically decorated print-out silver particles which were situated on the surface of octahedral silver iodo-bromide crystals were developed by low-pH Metol-citric acid-silver nitrate physical developer. Then, long filament was formed with the decorated particle on its tip.
    These results lead to the conclusion that the silver filament growth starts at the base of the filament, i.e., at the silver/silver halide interface.
    Through the experimental observation the existence of the “root” of developed filament that was not confirmed.
    Developed silver filaments often showed ruptured appearance after fixation as was indicated by Muller.
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  • Evaluating the Spectral Sensitivities in Color Photography
    Kazuhiko TAKEMURA, Noboru OHTA, Souichi KUBO
    1983 Volume 46 Issue 1 Pages 23-31
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.23
    JOURNAL FREE ACCESS
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    The spectral sensitivities employed in modern color photography, which are the color matching functions of the photographic system, are considerably different from the color matching functions of the human visual system. Therefore metameric colors may not be reproduced to the same color in color photography, but may be reproduced to colors over a certain region of color space. The degree of this color mismatches will provide a useful procedure for evaluating the spectral sensitivities in color photography.
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  • On the Mechanism of Photographic Development
    The Activation Energy for the Development of Silver Bromide Emulsion by Ascorbic Acid Developer
    Hiroshi TABE, Hiroshi HAMANO, Shinichi KIKUCHI
    1983 Volume 46 Issue 1 Pages 32-38
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.32
    JOURNAL FREE ACCESS
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    In the temperature range from 5° to 25°C, (1) the current density vs. potential curves of anodic reaction of 0.02 M ascorbic acid developer on a silver electrode coated with gelatin and of cathodic reaction of silver bromide electrode coated with gelatin in the developer were measured (Fig. 3), (2) development current density vs. potential curves were graphically derived from above two curves (Fig. 5) and expressed approximately by the Butler-Volmer equations (eq.(7), Table 2), (3) the rates of development were estimated from the developed silver vs. development time curves (Fig. 6) calculated on the basis of above equation (eq.(7), (8), (9), (10)), (4) the activation energies were obtained by the Arrhenius plots of the rates and compared with those experimentally measured.
    The calculated activation energies decreased with an increase in the exposure level and were in good agreement with measured energies (Table 4). Thus the activation energy of development could be explained quantitatively.
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  • Some Progress in Photothermographic Silver Salts Materials
    Yoshio HAYASHI, Takeshi UEDA
    1983 Volume 46 Issue 1 Pages 39-44
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.39
    JOURNAL FREE ACCESS
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    Photothermographic silver salts materials, represented by 3M “Dry Silver” materials, have some excellent characteristics. Further improvements in some properties are progressed. They are sensitivity, acutance of image, shelf life, image stability and colored image formation. Some new image forming technologies are also presented.
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  • [title in Japanese]
    [in Japanese]
    1983 Volume 46 Issue 1 Pages 49-50
    Published: February 28, 1983
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.46.49
    JOURNAL FREE ACCESS
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