日本写真学会誌
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
40 巻, 2 号
選択された号の論文の4件中1~4を表示しています
  • 谷 忠昭
    1977 年 40 巻 2 号 p. 61-65
    発行日: 1977/04/30
    公開日: 2011/08/11
    ジャーナル フリー
    ESCA and Infrared spectra have been measured of 1-phenyl-5-mercaptotetrazole (Compound I) to obtain the information about its adsorption state on AgBr grains. Evidence has been given to the adequacy to use the binding energy of C 2p as the energy criterion. It has been shown that a dissociative proton is bonded with a nitrogen in Compound I. On the other hand, the change in the Eb values of S 2p and N is in Compound I has revealed that a silver ion is bond with sulfur in Compound I, when Compound I is adsorbed to the grains, or form its silver salt.
  • 銀錯塩の異なる物理現像液における現像主薬の現像作用
    笹井 明, 小林 裕幸, 水澤 伸也, 三位 信夫
    1977 年 40 巻 2 号 p. 66-72
    発行日: 1977/04/30
    公開日: 2011/08/11
    ジャーナル フリー
    The activity of developing agents in the physical developers, which have equal silver and redox potentials but contain a different complexing agent, has been investigated by means of post-fixation physical development. Kodak CD-3, Metol and hydroquinone has been used as a developing agent in the developers.
    For all developing agents examined, the use of thiocyanate as a complexing agent gives larger development rate (dAg/dt) at the initial stage than the use of thiosulfate. We assume that this is because;(1) adsorption of S2O32- to silver nucleous is stronger than that of SCN-, and adsorption of these ions decreases the activity of development center:(2) Ag (SCN) n (n-1)- is reduced more easily than Ag (S2O3) n (2n-1)-.
    For the developers of same complexing agent, development rate (dAg/dt) at initial stage is the order, the use of Metol, Kodak CD-3, hydroquinone.
    When Metol is used, development rate of the developer containing thiocyanate as a complexing agent decreases with development proceeding and the developer is exhaused rapidly. But the rate of the developer containing thiosulfate increases with developing time, and to our surprise, the used developer is more active than the fresh one. It is suggested that the increase of development activity of the used developer arises from producing active developing agent (e.g. powerful adsorbing developer thiosulfonate) by the reaction of oxidized developing agent with thiosulfate.
  • 鉛山 洋一, 戸村 勉, 木下 堯博, 中村 賢市郎, 本多 健一
    1977 年 40 巻 2 号 p. 73-77
    発行日: 1977/04/30
    公開日: 2011/08/11
    ジャーナル フリー
    Copolymers of 4'Methacryloyloxybenzalacetophenone-nButylmethacrylate (4'MB-nBuMA) were synthesized and the effect of the benzalacetophenone group to the sensitivities of the copolymers were investigated. The copolymers are hardned by irradiation with UV light because of the formation of cyclobutane linkage. The reaction rate of the photodimerization was found to be second order with the concentration of the benzalacetophenone group in the film state. 4'MB-nBuMA copolymeres were spectrally sensitized by conventional triplet sensitizers, Michler's ketone, p-nitroaniline and 5- nitroacenaphthene. The efficiency of the sensitization increases with increasing the concentration of the benzalacetophenone group in the copolymer.
  • 入江 春雄
    1977 年 40 巻 2 号 p. 78-83
    発行日: 1977/04/30
    公開日: 2011/08/11
    ジャーナル フリー
    Characteristics of gelatin are briefly described from the view point of a photographic binder, especially with regard to following items: 1. Development of photographic gelatin, 2. Collagen and its conversion to gelatin, 3. Size and conformation of the gelatin molecule, 4. Characteristic amio acid composition of gelatin and its relation to the physico-chemical bihavior of gelatin, especially as a polyampholyte.
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