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Volume 30 (1967)
- Issue 4 Pages 193-
- Issue 3 Pages 132-
- Issue 2 Pages 70-
- Issue 1 Pages 1-
Volume 30, Issue 2
Displaying 1-7 of 7 articles from this issue
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Tadao TSURUTA1967 Volume 30 Issue 2 Pages 70-77
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSBasic concepts of holography which makes it possible to reconstruct complex-amplitude distribution of an object from the record of the intensity distribution on a photographic plate are presented and some features which distinguish this technique from the conventional photography are described. Attention is given to some properties of the reconstructed image, such as three-dimentional information storage, multiple recording of scenes and complex-amplitude reconstruction of the original object.View full abstractDownload PDF (10265K) -
Hiroshi HARA1967 Volume 30 Issue 2 Pages 78-82
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIn high energy X- and γ-ray radiography, partial desensitized blotches frequently appear on developed films. The present work investigated the reason why desensitized blotches, which were thought to be due to low pressure on emulsion layers, appeared more frequently in high energy region of radiations than in low energy region below 300 kVp.
A simple apparatus to give pressure and friction to industrial X-ray films was manufactured, and various measurements about the pressure effect on radiography were carried out by using it. As the result it was found that the pressure effect was fairly different according to the kind of X-ray films, even if they had the same X-ray sensitivity, and had a dependency on energy of radiations. Futhermore, it was made clear that this effect showed a fading with the lapse of time.
It is concluded, therefore, that the high rate of appearance of desensitized blotches, which is considerably different according to the kind of films, is caused, both by the high energy of radiations used and by the use of relatively thick lead intensifying screens (0.5-2.0 mm) for such radiations.View full abstractDownload PDF (595K) -
The Influence of the Conditions of Polymerization of AM-VI-AA CopolymersTetsuo YANO, Noboru ITOH, Shigeru IGUCHI1967 Volume 30 Issue 2 Pages 83-89
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSAmphoteric Polymers were prepared by the copolymerization of acrylic acid (AA), acrylamide (AM) and 1-vinyl-2-methylimidazole (VI), or by the hydrolysis of copolymer of the later two. Turbidity curves of these polymers were determined and compared with that of gelatin.
Polymers which contain relatively many imidazole groups, restrain the growth of AgCl crystals, while the carboxylic acid groups weaken the action of the imidazole groups, and when the action of the two groups were “balanced ”, the polymer shows the same turbidity curve as gelatin.
Polymers, the method of preparation of which are different from each other, percentages of three groups, required to give “ balanced ” polymer, is different. This difference is supposed to be caused by the difference of the arrangements of the active groups in the polymer molecules.
By adding various amount of isopropylalcohol to the polymerizing mixture, we can obtain a series of copolymers, polymerization degree of which is different. It is experimentally found that there exists a certain relation between the induction period (time to reach a certain turbidity) and the degree of dispersion, and the both change with the degree of polymerization. But the ripening rate (rate of growth after a certain turbidity) is not affected by the degree of polymerization.View full abstractDownload PDF (873K) -
Materials of ApparatusesKenichi ARIGA1967 Volume 30 Issue 2 Pages 90-94
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSTo choose the adequate materials for apparatuses of the continuous manufacturing process, the reactivities of materials to the following solutions were tested.
1. Solutions of chemicals at 70°C, which would come in contact with apparatuses.
2. Ten % silver nitrate solution at 70°C.
3. A high speed photographic emulsion at 5°C.
Then a photographic emulsion was prepared using the silver nitrate solution in which a piece of material chosen by the above mentioned test had been immersed.
This emulsion was compared with the same kind of emulsion prepared by untreated silver nitrate solution. Moreover, the physical strength was tested by the following method: emulsion at 70°C was continuously pressed into the pipe made of the material.
Then, among metals Cr-Ni-Mo-steel was chosen out, and among synthetic resins hard polyvinyl chloride containing no plasticizer was chosen out.View full abstractDownload PDF (605K) -
Liquid TransportKenichi ARIGA1967 Volume 30 Issue 2 Pages 95-98
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe following three transport ways, using materials inactive photochemicaly were tested. Then attention was paid, to keep the discharging quantity constant regardless of the variation of input pressure, and to ensure the possibility of small quantity transport.
1. Gear pump.
2. Flow down system controlling discharging quantity by overflowing.
3. Plunger pump with ball valve.
Gear pump was available for liquid, containing gelatin, but not for silver nitrate solution. On the other hand, flow down system was suitable for silver nitrate solution but not for liquid containing gelatin.
Plunger pump with ball valve was availabe for any liquid. The discharging quantity was kept constant precisely. The discharging pressure was big and proportional feeding for several liquid was possible.View full abstractDownload PDF (5152K) -
Continuous Ripening in One TankKenichi ARIGA1967 Volume 30 Issue 2 Pages 99-103
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSContinuously charging silver nitrate solution and alkali halide solution into one tank, the produced emulsion was discharged continuously by overflowing.
The tank was made of Cr-Ni-Mo-steel, and was covered by the insulater. The electric wire heater was wound around it. The polyethylene pipe and a special plunger pump with ball valves was employed to transport the liquid. A constant volume of emulsion was maintained in the tank.
When the constant volume of emulsion in the tank was V and the charging amount during unit time was F, the following fact was certified: As the value of V/F was smaller, the old emulsion was discharged sooner, the ripening time distribution was smaller, the silver halide particles were smaller and more uniform and the gamma of emulsion was larger.
The agitation was done by blowing air or by the rotor rotated in magnetic field as well as a customary propeller agitation.View full abstractDownload PDF (532K) -
[in Japanese]1967 Volume 30 Issue 2 Pages 104-114
Published: August 25, 1967
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (1294K)
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