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Volume 37 (1974)
- Issue 6 Pages 303-
- Issue 5 Pages 237-
- Issue 4 Pages 175-
- Issue 3 Pages 107-
- Issue 2 Pages 57-
- Issue 1 Pages 5-
Volume 37, Issue 4
Displaying 1-7 of 7 articles from this issue
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Sunao OKAMOTO, Toshiaki ICHIJO, Hiroshi MATSUO1974 Volume 37 Issue 4 Pages 175-184
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe 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.View full abstractDownload PDF (3500K) -
Influence of Silver Complexing Agents and Silver-Ion Activity on Physical DevelopmentHiroyuki KOBAYASHI, Akira SASAI, Shinya MIZUSAWA, Nobuo MII1974 Volume 37 Issue 4 Pages 185-191
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIt 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.View full abstractDownload PDF (7620K) -
Yasuo SHIRAI, Kazuo ISHIKAWA, Goro MIYAMOTO1974 Volume 37 Issue 4 Pages 192-198
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThis 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.View full abstractDownload PDF (890K) -
Yuhsaku TAMOTO, Masashi KATO, Kinzo HIRAI1974 Volume 37 Issue 4 Pages 199-206
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIt 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.View full abstractDownload PDF (4433K) -
Yuji OOBA, Hiroshi KOKADO, Eiichi INOUE1974 Volume 37 Issue 4 Pages 207-211
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSA 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.View full abstractDownload PDF (3860K) -
[in Japanese]1974 Volume 37 Issue 4 Pages 212-219
Published: July 31, 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (913K) -
1974 Volume 37 Issue 4 Pages 225
Published: 1974
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (47K)
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