日本写真学会誌
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
43 巻, 5 号
選択された号の論文の5件中1~5を表示しています
  • 友田 宜忠
    1980 年 43 巻 5 号 p. 273-287
    発行日: 1980/10/30
    公開日: 2011/08/11
    ジャーナル フリー
    A review for the world progress of photographic science and technology in 1979. Articles are selected from scientific reports and news in journals and periodical publications of foreign countries and Japan in 1979. Items are as follows: A) general view, silver halide photographic materials, color photography, electrophotography, non-silver photographic materials, B) photographic theory, development process, C) photographic processing, D) applications of photography including motion picture, graphic arts and radiography, E) photographic systems including cameras and photographic equipments.
  • 田中 啓一, 原田 賢二
    1980 年 43 巻 5 号 p. 288-291
    発行日: 1980/10/30
    公開日: 2011/08/11
    ジャーナル フリー
    Photo- and electron-sensitivities of K2 [Cu (C2O4) 2]·2H2O and CuC2O4·1/2H2O were studied by measuring the variation of reflection density upon radiation with ultraviolet light and electron beam. K2 [Cu (C2O4) 2]·2H2O is thermally developable. Its photographic sensitivities which were measured as radiation energy required to obtain D=0.1 above fog, are 2.2×106erg/cm2 at 254 nm and 1.6×107erg/cm2 at 334 nm after development. Electron sensitivities measured in the same way are 3.5×10-7 and 2.4×10-6 C/cm2 for K2 [Cu (C2O4) 2]·2H2O after development and CuC2O4·1/2H2O, respectively. The influence of several binders on the photographic sensitivity of CuC2O4·1/2H2O was studied for both ultraviolet light and electron beam radiations. The sensitivity was found to be inversely proportional to the permeability of oxygen into binder film. Cu2O was found to be one of the photolysis products of either of the two compounds.
  • Effects of Cl- and Br- Ions
    Seiichi SUMI, Akira FUJISHIMA, Kenichi HONDA
    1980 年 43 巻 5 号 p. 292-297
    発行日: 1980/10/30
    公開日: 2011/08/11
    ジャーナル フリー
    It is known that the spectral sensitivity (by a dye) of photographic emulsions increases when the emulsions are soaked in a concentrated AgNO3 solution. This Ag+ ion effect has also been identified with an electrochemical method as an increase in sensitized photocurrents, which are due to electron injection from photo-excited sensitizing dyes to AgX (X =Br or Cl) conduction band. The Ag+ ion effect is considered to be based on an anodic shift of the conduction band of silver halide. In order to clarify the mechanism of the Ag+ ion effect more precisely, the sensitized photocurrents were measured at various concentrations of Cl- or Br- ions, and they were generally found to be decreased with an increase in the concentration of halide ion. This halide ion effect can be considered as a reverse effect of the Ag+ ion on the sensitized photocurrents. It can therefore be concluded that the Ag+ ion and halide ion effects are based on anodic and cathodic shifts of the band edge of the silver halide, respectively.
  • メチルイソプロペニルケトン-アクリレート類共重合体の光分解と分光エネルギー感度測定
    鉛山 洋一
    1980 年 43 巻 5 号 p. 298-304
    発行日: 1980/10/30
    公開日: 2011/08/11
    ジャーナル フリー
    Photodegradation and spectral energy sensitivity of polymethyl isopropenyl ketone (PMIK) and its acrylate copolymers such as methyl methacrylate-MIK (MMA-MIK), n-butyl methacrylate-MIK (n-BuMA-MIK), methyl acrylate-MIK (MA-MIK), and n-butyl acrylate-MIK (n-BuA-MIK) were investigated.
    The number of chain scission was measured for copolymers in film state, and decreased in the following order: MMA-MIK≅n-BuMA-MIK>PMIK>MA-MIK>>n-BuA-MIK.
    The maximum chain scission due to the photodegradation was attained when 30 mol% of the MIK unit was contained in MMA-MIK and n-BuMA-MIK copolymer.
    The spectral energy sensitivity of PMIK and MMA-MIK (MIK 10 mol%) copolymer were measured, and the energy were estimated 220mJ/cm2, 30mJ/cm2 at 260 nm, respectively.
  • 小西 義昭, 福岡 正剛
    1980 年 43 巻 5 号 p. 305-315
    発行日: 1980/10/30
    公開日: 2011/08/11
    ジャーナル フリー
    When the films of silver alginate prepared on glass plates were immersed in HCl solutions ranging in concentration from 10-3 to 6 M, microcrystals of AgCl were formed on the films of alginic acid. With the aid of a scanning electron microscope, it was confirmed that the shape or configuration of the crystals varied widely with the concentration of HCl, but it was definite at a definite concentration.
    The primary process of this reaction could be described as an ion exchange between Ag+ and H+ in the film. It was concluded, on the basis of the kinetic studies, that the rate-determining step was a diffusion process of Cl- through the solution to the surface of the film, and that the flux of Cl- was a main factor governing the shape or configuration of the crystals.
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