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 29, Issue 1
Displaying 1-8 of 8 articles from this issue
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  • Progress of Photographic Lenses
    Zenji WAKIMOTO
    1966 Volume 29 Issue 1 Pages 1-7
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.1
    JOURNAL FREE ACCESS
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    Photographic lenses have been manufactured for more than 100 years, and theoretical studies have also been continued throughout. Therefore, the progress was rather steady than striking. In recent years, however, some new types of the lenses have been developed, owing mainly to the use of new optical glasses and the introduction of an electronic computer to the lens design. Attempts have also been made to design lenses favorable for given camera mechanisms or properly corrected for newly developed emulsions. These trends will be discussed from the lens designer's viewpoint.
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  • Analytical Methods of the Photographic Developer D-85b for Graphic Arts Films
    Shinya MIZUSAWA, Akira SASAI, Nobuo MII, Yoshio HIROMACHI
    1966 Volume 29 Issue 1 Pages 8-16
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.8
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    In order to maintain the photographic image qualities of graphic arts films, chemical analysis of both stock solution and tank solution of automatic processing machine are quite important.
    The methods to determine the constituents of Kodak developer D-85b (for graphic arts films) in stock solutions are studied in the condition of separate solutions A and B. The constituents of A solution are easily determined by the conventional methods already reported. The constituents in question are paraformaldehyde and formaldehyde-sodium-bisulfite, and both can be determined by the comparatively simple volumetric titrations. Namely, paraformaldehyde is determined from sodium hydroxide, which is produced by the addition of excess sodium sulfite, by alkalimetric titration with standard hydrochloric acid solution. Formaldehyde-sodium-bisulfite, formed by the combination of paraformaldehyde and sulfite, is decomposed to formaldehyde and sulfite by the addition of sodium carbonate, and then sulfite can be titrated with standard iodine solution, using starch indicator.
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  • Behavior of Hydrophillic Polymers as Protective Colloids for Silver Halide Crystals (I)
    Turbidity Curves for Several Polymers
    Tetsuo YANO, Noboru ITOH, Shigeru IGUCHI
    1966 Volume 29 Issue 1 Pages 17-21
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.17
    JOURNAL FREE ACCESS
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    By means of turbidity measurement, influences of several hydrophillic colloids on the growth of silver halide crystals, were investigated. Polymers reported here, were water soluble synthetic polymers, for examples, polyvinylalcohol, polyvinylpyrrolidone, polyvinylimidazole, polyacrylamide and also copolymers of the last two, etc.
    When a polymer, which adsorbs strongly to silver halide crystals, is blended with another polymer, which adsorbs weakly, the resulting solution shows a physical ripening property, very nearer to the strongly adsorbing one, and the presence of weak one has little or no influence.
    On the other hand, copolymers, which are made from two kind of monomers, show intermediate property between the two individual polymers, and some of them, show behaviors similar to inert gelatine.
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  • Behavior or Hydrophillic Polymers as Protective Colloid for Silver Halide Crystals (II)
    Model Polymers of Gelatine
    Tetsuo YANO, Noboru ITOH, Shigeru IGUCHI
    1966 Volume 29 Issue 1 Pages 22-30
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.22
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    Copolymers of 1-vinyl-2-methylimidazole and acrylamide were partially hydrolyzed, and the turbidity curve for silver halide sols were measured and compared with that of inert gelatine.
    These polymers have three kind of functional groups, ie., cathionic (imidazole: I), anionic (-COOH: II) and neutral (-CONH2: III) groups, and in this respect, they were considered to be very similar to gelatine.
    It is found experimentally, that these copolymers show physical ripening and protective action for silver halide crystals, very close to gelatine when the content of III is more than 60% and the ratio II is within a certain limit, which is shown in table I.
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  • Studies on Ti3+-EDTA Chelate Developer
    Toshio MIYAGAWA, Takeshi SAKAGAWA
    1966 Volume 29 Issue 1 Pages 31-37
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.31
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    1) A developer containing 0.05 M-Ti3+-EDTA for the treatment of a negative film was investigated. To prepare this solution, 0.05 mol TiCl3 and 0.075 mol EDTA·2Na·2H2O are mixed per 1, 000 ml. Acetic acid and Na acetate are added to adjust pH 3.15. The color of the Ti3+-EDTA developer is violet, while the oxidized solution turns non-colored. The photographic qualities of the negative processed with the Ti3+-EDTA developer are a little inferior to D-76.
    2) Although the redox potential of the Ti3+-EDTA solution is nobler than the non-chelated Ti3+ solution, the developing action of Ti3+-EDTA solution is more vigorous than that of the non-chelated Ti3+ solution. On the other hand, the potential of Fe2+-EDTA solution is less noble than the Fe2+ solution not etiolated, and the developing action of Fe2+-EDTA is stronger than that of Fe2+.
    3) Ti3+-EDTA developer made by the method of electrolytic reduction of Ti4+-EDTA solution can maintain its developing power repeating the development of films and the electrolytic reduction.
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  • Studies on Print-Out Emulsions (II) Effects of Ripening and Digestion
    Akira SASAI, Nobuo MII, Seiji MURA
    1966 Volume 29 Issue 1 Pages 38-43
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.38
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    Effects of ripening and digestion of mother emulsion on making the print-out emulsion, consisted of mother AgBr-I emulsion to which silver nitrate and citrate had been added as a halogen acceptor, were investigated.
    Digestion of mother emulsion increases sensitivity and contrast in the print-out emulsion remarkably, and this effect depends upon the rate of ripening. Addition of thiosulfate as a chemical sensitizer at the start of digestion stage also increases the print-out effect.
    The rate of Digestion have influence upon the color of print-out image.
    Extreme digestion is effective for high speed print-out emulsion making and lead to better printout characteristics.
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  • [title in Japanese]
    [in Japanese]
    1966 Volume 29 Issue 1 Pages 44-48
    Published: May 20, 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.44
    JOURNAL FREE ACCESS
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  • Erratum to : Optical Absorption in Silver Halides
    1966 Volume 29 Issue 1 Pages 57
    Published: 1966
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.29.1_57
    JOURNAL FREE ACCESS
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