Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
Volume 36, Issue 5
Displaying 1-5 of 5 articles from this issue
  • Shin FUJISAWA
    1973 Volume 36 Issue 5 Pages 271-285
    Published: September 30, 1973
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    A review on the progress of photographic science and technology in foreign countries in 1972. Subjects are selected from publications in 1972 covering the following fields: general view, camera, lenses and accessories, light sources, B & W silver halide sensitive materials, non silver sensitive materials, color photography, mechanism of photographic sensitivity, processing, sensitometry and image evaluation, motion picture, scientific photography and graphic arts.
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  • Tadaaki TANI
    1973 Volume 36 Issue 5 Pages 286-290
    Published: September 30, 1973
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    The spectrally sensitizing abilities of both thiatricarbocyanine and phenosafranine were increased by the increase of silver ion concentration in emulsions. However, the degree of the increase of the spectrally sensitizing ability of thiatricarbocyanine was much larger than that of phenosafranine. This result suggests that the increase of silver ion concentration in emulsions could almost eliminate the origin of the weak ability of thiatricarbocyanine for spectral sensitization, whereas it could not eliminate all of the origin of the inefficiency of phenosafranine for spectral sensitization, supporting the modified electron transfer mechanism proposed by the author.
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  • (1) Two-component System
    Noboru OHTA, Koji TAKAHASHI
    1973 Volume 36 Issue 5 Pages 291-303
    Published: September 30, 1973
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    The mathematical fundamentals have been established, based upon principal component analysis, for the estimatimation of the spectral density distributions of two dyes from those of their mixtures. Thougth the spectral density distributions of component dyes cannot be determined uniquely, their possible shapes have been estimated by supposing two physically reasonable assumptions. The suitable computer programs for this purpose have been developed for an IBM-1130 Computer in FORTRAN IV language. Some practical applications are demonstrated here; the influence of width between two peaks of component dyes, the influence of sample number of mixtures, and so forth.
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  • Masao OHTSUKA, Yuhsaku TAMOTO, Kenichi ARIGA
    1973 Volume 36 Issue 5 Pages 304-313
    Published: September 30, 1973
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    Laser oscillation was observed from Xanthine dye solutions pumped with the second harmonics light of a Q-switched ruby laser. These Xanthine dyes were rhodamine 6G, rhodamine B, rhodamine S and rhodamine F3B. Three kinds of solvent, ethanol, acetone and ethylene-glycocl were used.
    The spectral range of laser oscillation obtained from the combination of these dyes and solvents was about 570 nm-640 nm. Further in each dye solution, the laser spectral range had it's width of about 20 nm. As for the solvents, the ethylene-glycol had the laser oscillation having the longest wave length. On the laser oscillating characteristics when two kinds of dye solution were mixed, it was proved apparent that the laser oscillation depended on only one having the lower energy level of spectral characteristics.
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  • [in Japanese]
    1973 Volume 36 Issue 5 Pages 314-320
    Published: September 30, 1973
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
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