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Volume 46 (1983)
- Issue 6 Pages 463-
- Issue 5 Pages 381-
- Issue 4 Pages 251-
- Issue 3 Pages 155-
- Issue 2 Pages 87-
- Issue 1 Pages 1-
Volume 46, Issue 4
Displaying 1-10 of 10 articles from this issue
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Hiroshi HADA, Yoshiro YONEZAWA1983 Volume 46 Issue 4 Pages 251-262
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSVarious kinds of inorganic photochemical reations in aqueous solutions, in solids, and in solidaqueous solution systems have been re-examined from a viewpoint of chemical conversion and storage of light energy. Certain kinds of photochemical reactions which give rise to metals on the solid surface are light-energy-storage type in nature. We have proposed two types of the photochemical storage battery, in which light energy is stored in situ and therefore, electrical energy is drawn out reversibly whenever it is necessary. In the one-compartment battery based on the photolysis of either AgCl-Fe2+ or TiO2-Ag+ system, the deposited Ag on the electrode surface and the oxidized species in a solution were stored for later electrochemical discharge but the cell performance proved to be not so good. We have made up the two-compartment battery having either n-TiO2 or n-GaP photoelectrode. Light energy could be stored as the oxidized species in a solution at the first compartment and the deposited metal on the electrode surface at the second compartment of the battery. The two-compartment battery has shown may remarkable features in comparison with the onecompartment one. Photochemical metal deposition seems to be interesting for the applications to the light-energy storage system as well as the photographic imaging system.View full abstractDownload PDF (1494K) -
Masaaki YOKOYAMA1983 Volume 46 Issue 4 Pages 264-272
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
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Junichi HANNA, Eiichi INOUE1983 Volume 46 Issue 4 Pages 273-282
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSSome organic films show a photo-induced change of charge-acceptance for a corona. The change can be utilized as an image memory, which is able to be read out by corona charging and to be transformed to the toner image as in electrophotography.
In this review, the factors of determining charge-acceptance are discussed from the point of view of the electrical properties in the bulk and interfaces of the film, and the photo-induced memory effect (the charge-acceptance memory) appeared in literatures is surveyed on the basis of this discussion.View full abstractDownload PDF (1044K) -
Takashi KITAMURA1983 Volume 46 Issue 4 Pages 283-289
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThis paper is a review of our recent works on phthalocyanine pigment dispersed in dielectric resin and double layered photoreceptors for electrophotography.
The photo-induced discharge curves of phthalocyanine-polymer photoreceptors have been known to exhibit an induction effect which is associated with a trapping of photocarriers at the surface of pigment. Electron acceptor was found to decrease this effect and consequently increase the photosensitivity. The energy level and density of traps are discussed from the results of thermally stimulated current and the values of drift mobility and life time were obtained by the measurement of time of flight method for phthalocyanine-polymer photoreceptor.
The photoconductivity of evaporated thin film of metal-free phthalocyanine and the electrophotographic properties of double layered photoreceptor are discussed. The saturated surface potential decreased with increasing of the thickness and deposition rate of evaporated phthalocyanine layer.
The application of phthalocyanine-polymer layer to platemaking was discribed. Electrophotographic printing plates consisting of a photoconductive layer and an alkali soluble photopolymer layer has a excellent photosensitivity, a high resolution and a long-run capability suitable for the projection and laser platemaking.View full abstractDownload PDF (860K) -
Tadashi WATANABE1983 Volume 46 Issue 4 Pages 290-298
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe phenomenon of surface-enhanced Raman scattering (SERS) can provide a powerful means for in situ, sensitive, and highly specific observation of adsorbates on metal surfaces. A historical background, the fundamental characteristics, and a number of applications of SERS published to date are reviewed. Emphasis is placed on our recent results concerning the nature of “active sites” in SERS. The applicability of SERS to problems in silver halide photographic science is brieflydiscussed.View full abstractDownload PDF (1077K) -
Tooru INOUE, Toshihiro YAMASE1983 Volume 46 Issue 4 Pages 299-305
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
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Tadao SUGIMOTO1983 Volume 46 Issue 4 Pages 306-312
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIt was theoretically deduced that smaller particles might grow at the expense of larger particles during aging in a closed dispersion under some specific conditions. This theoretical prediction was verified with some mixed emulsions composed of two kinds of monodisperse AgBr particles; e.g., the growth of small cubic AgBr particles at the expense of larger octahedral AgBr particles during aging at a low pBr, or the growth of small octahedral particles at the expense of larger cubic particles during aging at a high pBr. As a result, the size distribution became narrower. This phenomenon was named “Reversed Ostwald Ripening.” The reversed Ostwald ripening was a relatively rapid process observed at the early stage of aging until the small particles reached the equilibrium form. Then, it switched to the normal Ostwald ripeninc. durina which the large particles grew by the dissolution of the small particles.View full abstractDownload PDF (3895K) -
Takashi OHNO, Hiroyuki KOBAYASHI, Shinya MIZUSAWA, Nobuharu TAKAI1983 Volume 46 Issue 4 Pages 313-321
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe photographic developing agents, Metol and hydroquinone in a photographic developer, were analyzed directly by means of liquid chromatography without any pre-treatment of the developer. The eluent of the anion exchange chromatography was prepared by eliminating the developing agents from the developer. The oxidation products of these developing agents, which were exhausted by air or film processing, were also determined. These substances were identified by the retention time of the chromatogram and spectral absorbance of eluated peak solution. It showed that hydroquinone was preferentially oxidized in a mixture of Metol and hydroquinone, either during development or by reaction with oxygen.View full abstractDownload PDF (1093K) -
Image Quality and Reduction of FogMasayoshi TSUBOI1983 Volume 46 Issue 4 Pages 322-325
Published: August 28, 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSImage quality of the positive image formed by the Thermal Diffusion Transfer Development (TDTR) using Co (III) complex compound was investigated. The image density of the positive image was increased when Si02 was dispersed in the binder layer of the receiving sheet.
Metal complex compound with ligands weakly bonded to the metal, such as zinc behenate, reduced the fog density on the receiving sheet. The fog-inhibiting effect was mainly ascribed to trapping PAN during TDTR which was diffused from the exposed area of the photo-sensitive layer.
Image quality of the negative image, which was expressed by the resolution power, was higher than the positive image. The relation of the resolution power with the chain length of the alkyl group in the anion of Co (III) complex was also discussed.View full abstractDownload PDF (3486K) -
1983 Volume 46 Issue 4 Pages 368
Published: 1983
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (72K)
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