巻号一覧
30 巻, 1 号
選択された号の論文の6件中1～6を表示しています
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ジェイムス T. H.1967 年 30 巻 1 号 p. 1-9
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーPDF形式でダウンロード (1352K) -
物理熟成に及ぼす解離基の影響矢野 哲夫, 伊藤 昇, 井口 茂1967 年 30 巻 1 号 p. 10-18
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーCopolymers of 1-vinyl-2-methyl-itnidazole, acrylamide and acrylic acid were prepared and the influence of which on the physical ripening of silver chloride in various pH media were studied.
It is found experimentally, that the turbidity curves show maximum at the lower pH region and minimum in higher pH range (pH: 6-9).
The former is related to the isoelectric points of copolymers and the later is considered to depend on the degree of dissociation of ionizable groups.
It is concluded that the adsorption of polymer on the silver halide crystals is not caused by the coulomb force between ionized groups (dissociated groups), but by other chemical co-ordinate force.抄録全体を表示PDF形式でダウンロード (851K) -
解膠作用について矢野 哲夫, 伊藤 昇, 井口 茂1967 年 30 巻 1 号 p. 19-30
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーAt the moment of emulsification, when concentrations of silver nitrate and alkali halide solutions exceed certain critical values, coarse grains of silver halide (pepper) were formed, but the coarse grains disappear by standing with agitation in presence of excess halide and some kind of polymer (cf. fig. 1A). This phenomena called “ peptisation”.
On the other hand, in the presence of excess silver ions, peptizing effect does not appears with any polymer so that the peptizing effect for silver halide is caused by the excess halide ions.
The critical concentrations varies according to the kind of polymer, but this difference is little, compared to the difference of peptizing effect between various polymers. For examples, PVA and PAM begin to give coarse grains almost at the same ionic concentrations but after standing with PVA, coarse grains remain unpeptized, whereas PAM has very strong peptizing effect and gives finely divided grains even in very high ionic concentrations.
The difference of peptizing effect between various polymers is considered to be caused by the difference of the degree of aggregation by salt, therefore, aggregated polymer disturb the adsorption of halide ions on the silver halide crystals.抄録全体を表示PDF形式でダウンロード (11576K) -
未後熟, 後熟臭化銀乳剤粒子の露光量と現像核分布の対応上田 博造, 塩沢 猛公1967 年 30 巻 1 号 p. 31-36
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーRelation between development center distribution and chemical ripening of pure silver bromide emulsion grains was investigated by taking electron micrographs of gelatin-envelops surrounding the grains after exposing the grains and partially developing them to reveal the sites at which developable latent image specks had been formed. For a primitive (non after-ripened) emulsions at low intensity exposure, the edge site of tabular grains was the preferred site for the development center formation and the development process started from there projecting silver filaments. The number of centers was few. On the contrary in an after-ripened emulsion, at slightly shorter exposure time the flat tabular surface of grains was the preferred site for development center formation. For the after-ripened emulsion, differing from the primitive emulsion, developed silver specks did not form at edge site without much heavier exposure. The centers were numerous, and silver filaments were fine and short. Among triangular and hexagonal tabular grains of both primitive and after-ripened emulsions, there were some grains in which the corner of them was the preferred site for development speck formation.抄録全体を表示PDF形式でダウンロード (8689K) -
現像における物理現像の関与率について源田 秀三郎, 阪口 富弥1967 年 30 巻 1 号 p. 37-50
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーThere are two basic methods by which developed silver image can be formed, these are called chemical and physical development, respectively. In ordinary development, these both types of development may occur, when the solutions contain substances which have some solvent action on silver bromide.
Authors tried to indicate the rate of physical development which occured in specific photographic development by the relative ratio of effective specific gravity of this developed silver grain to the effective specific gravity of completely physical developed silver, in accordance with synthetic consideration from three different types of experiments.
These experiments are (1) observation of filamentary structure of developed silver grains of process-film by six types of test developer from post-fixation physical developer to inorganic chemical developer, (2) quantitative analysis of reduced silver amounts of developed layer by each test developer after sensitometrical exposure, and (3) measurements of average grain diameter of developed silver reduced by each six types of test developers, based on the electronmicroscopy of ultra-thin cross-sections of developed layer.抄録全体を表示PDF形式でダウンロード (21856K) -
原 浩, 榛沢 貞茂1967 年 30 巻 1 号 p. 51-57
発行日: 1967/06/25
公開日: 2011/08/11
ジャーナル フリーIn recent years, high energy X and γ-ray radiography has been put to practical use, with the development of various particle accelerators and various radioactive isotopes.
We investigated if the results which J.R. Greening and others obtained on the wave length dependence of the sensitivity of industrial X-ray films were just right even in the range of such high energy.
The sensitometry was carried out according to the method of J.I. S.(draft proposal), and in the measure ment of exposure dose for testinig films various type of ionization chambers were used.
The results obtained showed that the sensitivity of films decreased with the increase of X and γ-ray energy and became minimum at a energy of 3-8 MeVeff. It was also made clear that the use of nonscreen type films together with lead intensifying screens showed some different actions.抄録全体を表示PDF形式でダウンロード (669K)
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