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Volume 36 (1973)
- Issue 6 Pages 339-
- Issue 5 Pages 271-
- Issue 4 Pages 219-
- Issue 3 Pages 153-
- Issue 2 Pages 73-
- Issue 1 Pages 5-
Volume 36, Issue 3
Displaying 1-6 of 6 articles from this issue
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Seiji OKANO1973 Volume 36 Issue 3 Pages 153-159
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (1254K) -
Tomiya SAKAGUCHI, Takaharu MIURA1973 Volume 36 Issue 3 Pages 160-170
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSSo far the agitatian of reaction vessel for photographic emulsion has been done empirically and habitually. Evaluation method of agitation efficiency by the use of photoelectric measurement of transmittance variations in the reaction vessel and its recording by pen-recorder was tested. 600 ml of 1% gelatine solution which contain 5.0 ml of 1 M KI solution at 38°C in 1000 ml tall-beaker was used as test solution, and 5.0 ml AgNO3 was added quickly, and its transmittance variations were monitored with the lapse of time by photoelectric pen-recorder. By the addition of AgNO3 solution, the transmittance of reaction vessel decrease suddenly and gradually increase again according to the agitation proceeding, and reach to definite value. The time interval of this process will be correspond to the agitation efficiency of each type of stirring rod.
The agitation efficiencies of fourteen different types of stirring rods on various rotation speeds were tested by the above mantioned measuring method. These results are showed and discussed.View full abstractDownload PDF (7020K) -
Takekimi SHIOZAWA, Takeo SAKAI1973 Volume 36 Issue 3 Pages 171-176
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDevelopment center distribution and form of developed silver produced by lith and ordinary development of lith emulsions with and without polyethylene oxides (PEO) are observed by electron microscope. PEO has no influence on ordinary development of the emulsions. In lith development of the emulsion containing PEO, a fairly long induction period is observed which terminated by explosive development. After lith development, silver specks of about 1000Å in diameter are recognized even in the region of optical density equal to zero. It can therefore be presumed that oxidation of latent images is not occured in such a region.View full abstractDownload PDF (11588K) -
Effect of Thiocyanate Salts on the Physical Properties of Gelatin and Polyvinyl AlcoholMasami KAWASAKI, Takaaki OHTSU1973 Volume 36 Issue 3 Pages 177-186
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSViscosities, jelly strengths, setting points, and swellings of gelatin and polyvinyl alcohol were effected with thiocyanate salts and/or sulfate salts.
Viscosity of 62/3% hide gelatin solution decreased about 10% by adding ammonium thiocyanate and potassium one. but increased about 10% by adding sodium thiocyanate, lithium one, and magnesium one. Viscosities of 7% polyvinyl alcohol solution decreased 15%, 20%, 25% by adding potassium thiocyanate, sodium one, and a ammonium one in the concentrations of 1.0 to 1.5 M, but increased by adding magnesium thiocyanate, In the case of adding sulfates, viscosities of gelatin were in the order of NH4+<Na+<Mg++<A1+++, and those of polyvinyl alcohol were in the order of NH4+<Na+<Mg++.
Jelly strength and setting point of 62/3% hide gelatin solution reduced to a half when 0.5 M thiocyanate were added, and those of gelatin incerased to 20-30 percent when organic acid salts were added.
Thickness of swelled X-ray film processed by thiocyanate salt solution was 20-30 times (to 600-1200μin thickness) that of original film and in the case of polyvinyl alcohol emulsion it swelled 6-7 times (to 160-200μ in thickness).
The swelling is suppressed by the addition of sodium sulfate, magnesium sulfate, and aldehyde and the order of suppression for gelatin was sodium, aldehyde, magnesium. That for polyvinyl alcohol was reverse.View full abstractDownload PDF (1169K) -
Metameric Color Matching by Nonlinear OptimizationNoboru OHTA1973 Volume 36 Issue 3 Pages 187-192
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSComputer algorithm of metameric color matching in subtractive color photography has been established using nonlinear optimization by Simplex technique. Suitable computer program has been developed for an IBM-1130 computer in Fortran IV language. Merits and Demerits of this technique are discussed in comparison with the Newton-Raphson approximation and the Regula-Falsi method. It has been elucidated that the Simplex technique is superior to the others especially when no feasible solution can be obtained by them.View full abstractDownload PDF (566K) -
Haruo IRIE1973 Volume 36 Issue 3 Pages 193-198
Published: May 31, 1973
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIn the first part of the paper the versatility of the silver halide photographic process are discussed in detail. Then followin gitems are cited and discussed;(1) absolute one step photography (2) Kodacolor II (3) Kodak Photomicrography SO 456 (4) Verilith Plate (5) Kodak MP Intermach System (6) Agfa Contour Film.
In the last part several data about the gross productive activity of the Japanese manufactures of photographic materiamls such as the turnout of the silver halide photograpic material comparing those in 1971 against those in 1962, development of exports and inports of the photographic materials in a recent decade.View full abstractDownload PDF (3007K)
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