Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
Volume 42, Issue 1
Displaying 1-8 of 8 articles from this issue
  • Hirozo UEDA
    1979 Volume 42 Issue 1 Pages 5-9
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    Once a germ of new technology is found to have a possibility to embody something new and useful that will break through any technical limits set by other available technologies at that time, then subsequently extensive efforts in the science and engineering is to be carried out in order to cultivate the germ to bloom in the commercial field. These efforts will result in better quality, lower cost of a series of new products, through overcoming many technical difficulties associated with the new technology. Accompanied by these efforts, new systems utilizing the new technology will be developed to broaden the spectrum of the functions of the technology to the human life. The evaluation-software will be another important assets of the technology.
    The history of photography based on silver-salts have been showing nothing other than the above-mentioned general situation; the advance in quality and the reduction in cost of the materials lead to the expansion of the system functions. Reaching the matured stage of this technology in these days, we see the improvement of the material being brought much more through fundamental research than ever on one hand, and combined by new hardwares introduced from the related industries, on the other. However, we should be most aware that the general tendency of a system to loose the flexibility may slip in after it has once established.
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  • Approach to the Evaluation of Defocussed Images by Three Dimensional Test Charts
    Minoru TAMURA, Yasuhiko SHIOKAWA, Eiji UMEDA, Yusuke ISHITANI
    1979 Volume 42 Issue 1 Pages 10-17
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    The impression of the defocussed image causes often much discussion in the pictorial photography. Each photographic objective shows its own feature in the defocussed images. A 3-dimensional test chart (This means that the chart has the depth in the object space.) has been made for trial, and as examples of its use measurements and analyses of many defocussed images formed by several photographic objectives have been undertaken. The second moment of area is calculated from the line spread function of each lens, and the normalized moment is compared with that of the normal distribution.
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  • Photodegradation of Polymethyl Isopropenyl Ketone and Polyphenyl Vinyl Ketone
    Yoichi NAMARIYAMA, Kazuhiko NAKAGAWA, Hiroyuki MIYAZAKI, Kenichiro NAK ...
    1979 Volume 42 Issue 1 Pages 18-24
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    Photodegradation and photographic characterisitics of polymethyl isopropenyl ketone (PMIK) and polyphenyl vinyl ketone (PPhVK) films were investigated.
    The UV spectra of PMIK and PPhVK in dioxane showed absorption bands in regions, 250-335 nm (λmax=290, εmax=45), and 300-380 nm (λmax=323, εmax=89), respectively.
    The irradiated PPhVK films is developed by ethyl cellosolve well though the PMIK by methyl cellosolve. It was found that sensitivity of PMIK was inceeased with the increase of molecular weight Mn, and the elevetion of temperature during irradiation. However, the relative sensitivity (S) of the PPhVK and Mn bear a linear relationship to each other; i.e. S=365-1.93×10-3Mn.
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  • Takao NAKAYAMA, Kenichi SHIMAZU, Eiichi INOUE
    1979 Volume 42 Issue 1 Pages 25-35
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    Responses of photodelamination imaging system to Xenon flash lamp were examined. High intensity-shot exposure creates a favorable condition for photodelamination through decomposition and possible softening of photosensitive layer components. Optimum characteristics for the binder are (1) low nitrogen permeation constant and (2) sharp softening temperature range, maximizing the effect of flash exposure which causes photodecomposition of sensitizers and sharp rise in temperature in exposed area. Single and double layer constructions were evaluated for photographic and storage characteristics.
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  • Mamoru NAKATANI, Kiyoshi YAMASHITA, Kosaku MASUDA, Yasushi USAGAWA, Sa ...
    1979 Volume 42 Issue 1 Pages 36-43
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    New synthetic methods and physical properties of 5-acyl-3-phenyloxazolidine-2, 4-diones are studied.
    These compounds have three characteristic absorption bands in carbonyl region of IR spectrum, namely 1830, 1750 and 1720 cm-1. 5-Pivaloyl-3-phenyloxazolidine-2, 4-dione is measured for pka value in 25 percent aqueous cellosolve and is confirmed to be a stronger acid than commonly used couplers.
    This fact can well explain why these compounds have high coupling activity in rather weakly alkaline developer.
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  • The Formation of Metal Images due to Electron-Induced Metallochromic Processes
    Shin OHNO
    1979 Volume 42 Issue 1 Pages 44-51
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
    On a copper-evaporated polymeric film consisting of a poly (vinyl-chloride)-type matrix and a thermochromic benzospiran compound, chemical properties of the surface was affected remarkably by the successive treatments of electron bombardment and heating.
    By post-heating in air at 150°C, a magenta metallochrome consisting of a copper (II) ion and a benzospiran was formed on the site bombarded at an intensity of below 10-6 coulomb/cm2 (organometallic effect). The formation of it was closely related to the disappearance of surface copper. Moreover by post-heating in nitrogen at 160°C, an yellowish hydrophobic product was formed on the surface of non-bombarded site (covering effect). The chemical properties of film surface were changed by the formation of metallochrome or the hydrophobic covered product.
    An additional metal deposition due to an electroless nickel plating or a zinc evaporation was possible on the residual surface copper in the treated film. A positive-type metal image was formed by the organometallic effect and a negative-type one was formed by the covering effect.
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  • 1979 Volume 42 Issue 1 Pages 63-73
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
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  • 1979 Volume 42 Issue 1 Pages 74-82
    Published: February 28, 1979
    Released on J-STAGE: August 11, 2011
    JOURNAL FREE ACCESS
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