日本写真学会誌
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
37 巻, 4 号
選択された号の論文の7件中1~7を表示しています
  • 岡本 忠直, 一条 敏明, 松尾 宏
    1974 年 37 巻 4 号 p. 175-184
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
    The Earth Resources Technology Satellite ERTS-1, was launched on July 23, 1972. Today, the ERTS program can potentially provide better information on the resources of the earth.
    The informations transmitted from ERTS-1 are reproduced as the multi-spectral photograph, and pseudo-color image is composed from them for analyse the earth resources and environment.
    In this paper the authors intend to give a very brief description of the remote-sensing technology, and also introduce the reproduction system of ERTS-1 photography at EROS data center in U.S.A.
  • 錯塩形成剤の種類と銀イオン活量の影響
    小林 裕幸, 笹井 明, 水澤 伸也, 三位 信夫
    1974 年 37 巻 4 号 p. 185-191
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
    It has been thought that the physical development rate depends on the difference in potential between the silver electrode in the developer without developing agents and the redox electrode in the developer without silver-ion.
    Using two series of CD-3 physical developers with three levels of silver-ion activities, one series containing sodium thiosulfate, the other potassium thiocyanate as silver complexing agents, the dependence of development rate upon silver complexing agents has been invertigated by post fixationphysical development and also by tracing OH- consumption during liquid reaction in a mixture of the physical developer and a Carey-Lea-Type colloidal silver sol.
    The use of thiocyanate gave faster development rate and more rounded silver grain than thiosulfate at equal silver-ion activities. Consequently, the differences in the rate of development and the form of developed silver may be due to not only silver-ion activity, but also the factors originated in the kind of silver complex.
  • 白井 靖男, 石川 和夫, 宮本 五郎
    1974 年 37 巻 4 号 p. 192-198
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
    This study aims to apply the organic titanium compounds as light-sensitive material. In this paper we report the behavior of light-sensitive material of alkyltitanates (Ti (OR) 4, R=alkyl group).
    Alkyltitanates are hydrolyzed easily even with a trace of moisture in the air, and these hydrolysis products have very strong hydrophobic surface and positive surface potential.
    On irradiating these hydrolysis products with U.V. ray, its hydrophobic surface changes gradually in to hydrophilic surface and simultaneously its surface potential changes from positive to negative in accordance with increase of irradiation time. These changes occure primarily by the decrease of residual alkyl group.
    Alkyltitanates have also a property which is colored by irradiating with U.V. ray.
  • 田本 祐作, 加藤 正視, 平井 欣三
    1974 年 37 巻 4 号 p. 199-206
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
    It was investigated the densitometer that could be simultaneously measured three color densities of color photographic materials.
    This instrument consisted of the densitometer and the desk calculator.
    Using this instrument, three analytical spectral densities were calculated from simultaneously measured three integral spectral densities.
    The sampling interval, starting point, sampling number and fog densities were set manually by digital switches.
  • 大庭 有二, 小門 宏, 井上 英一
    1974 年 37 巻 4 号 p. 207-211
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
    A ZnO-resin layer in contact with an Al plate forms a galvanic cell in an electrolyte solution. It is applied to image formation in which the photoconductivity of the ZnO layer is controlled imagewisely by light. In this process called a galvanic cell type electrophotography, the anodic deposit is preferably made of a conductive material rather than an insulating material. Therefore two type developer was prepared and compared, one was NiCl2 developer, the other was 2, 3, 5-triphenyl tetrazolium chloride developer. Amount of Ni deposited was 50 times more than 1, 3, 5-triphenyl formazan red (TF) deposited at the same exposure, and the quantum efficiency of Ni deposited was up to about 5000. But the optical density of the Ni deposited was less than the TF deposited. This is attributed to a low covering power of Ni. The low covering power of Ni is likely a result of a spherical shape of deposited Ni grains and thus an inefficient light scattering.
  • 山本 豊孝
    1974 年 37 巻 4 号 p. 212-219
    発行日: 1974/07/31
    公開日: 2011/08/11
    ジャーナル フリー
  • 1974 年 37 巻 4 号 p. 225
    発行日: 1974年
    公開日: 2011/08/11
    ジャーナル フリー
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