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Volume 68, Issue 2
Displaying 1-10 of 10 articles from this issue
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Haruhiko IWANO, Etsuo FUJII2005 Volume 68 Issue 2 Pages 101-106
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
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Yoshio SEOKA, Nobuhiko UCHINO, Takuji OKURA, Masaru SANO, Yoshinori HA ...2005 Volume 68 Issue 2 Pages 107-111
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSEstimating the storage stability of photographic images is based on the method which determines an image life by room temperature extrapolation using the Arrhenius method as shown in the ISO standard.
In this report, the contents of the four reports presented at photographic society meetings in the past are systematized by introducing “Sensitive Material Profiling Using Extrapolation Method, ” a new concept which surmounts the above mentioned problems, while including the Arrhenius estimation that adopts “Cyclic Thermal Tests” to shorten the estimation time which is the biggest problem when making estimations using the Arrhenius method, and the “Probability Prediction Method” aiming at further improvement of estimation accuracy.View full abstractDownload PDF (777K) -
Kazuo KATO, Yoshihiko SUDA2005 Volume 68 Issue 2 Pages 112-119
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSTest methods for light stability and gasfastness on inkjet prints as well as how to calculate their lifetime are summarized. Various factors affecting their evaluations are also reviewed compared with the test methods for stability on conventional silver halide color print. The present state on the development of ISO standards is briefly stated.View full abstractDownload PDF (1475K) -
Hiroyuki ONISHI2005 Volume 68 Issue 2 Pages 120-122
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSFor several years a general lack of ozonefastness in dye-based IJ photographic prints has been a significant concern for users of that technology. Recently, however, due to improvements in the molecular structures of the dyes, ozonefastness has been greatly improved. Similarly, lightfastness has been improved such that image lifetimes more than two times those of earlier dye-based inks have been attained. Accordingly, the image permanence of dye-based IJ photo prints has reached an acceptably high level of performance, which along with the ease of use of IJ printers, has made enjoyable home photography a reality. Furthermore, new pigment-based inks have been developed that yield images with glossiness that is comparable to that of conventional photographs. The image permanence of these inks is even better than that of dye-based inks. As a result, they have found wide acceptance by professional photographers and photograph aficionados.View full abstractDownload PDF (539K) -
Masaaki KASHIMURA2005 Volume 68 Issue 2 Pages 123-132
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSWhen Keio University came to possess a copy of the Gutenberg Bible in 1996, the HUMI Project was established as an interfaculty organization for the purpose of digital archiving of rare books and digital bibliographical research. At first in this paper, activities of the HUMI Project will be briefly introduced. Then the procedure for digital archiving of rare books and photographing method, with a special book cradle for rare books, which have been established and devised by the HUMI Project in collaboration with foreign research libraries, will be discussed. In the last part, the state of equipment and methods of image acquisition for digitizing rare books and technique for web-based exhibition will be outlined.View full abstractDownload PDF (6575K) -
Seitaro MAENO, Shohei NISHIZAWA, Hidenari KOBAYASHI2005 Volume 68 Issue 2 Pages 133-142
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSLiquid chemical wastes produced in the chemical experiment studies at Kanazawa Izumigaoka Senior High School, were the largest in quantity in Ishikawa Prefecture. The disposal of the wastes was costly, and to save the cost, our Chemical Research Club began to recycle silver and make silver nitrate from the wastes in 2000. The recycling was successful and the waste processing charge could be reduced significantly, and we presented details of the research at the Regional Symposium of Ishikawa High School Chemical Research Clubs. In 2002, we received solid chemical waste that contains mainly silver chloride and weighs about 2.7kg from the Chemical Research Club of Kanazawa Nisui Senior High School. The solid was dissolved in conc. liquid ammonia, and copper pellets were added in the solution. 273 grams of metallic silver could be recovered out of the solid waste 1.7 kg. Then, 30 grams of metallic silver was dissolved in conc. hydrogen nitrate and we obtained silver nitrate, 33g, which process proved the recycling of silver meets economical principle: The price of AgNO3 obtained is more than the cost of reagents used for the recycling.
We stepped forward to use the recycled silver by learning the textbook of early photography “Shashin-kyo Zusetsu (Camera and Photography, illustrated) ” by Shunsan YANAGAWA in 1867. Prof. Emeritus Eiji ITAGAKI at Kanazawa Univ. showed us the book and we rewrote the text in modern Japanese. Following the book, Collodion Photography was successfully reproduced with the camera designed and manufactured ourselves. With more than 30 trials, images of us were fixed on the Collodion plates.
Through the research, we studied that, by understanding the process step by step, the ancient complicated but established and once popular technology such as the Collodion Photography can be regenerated over the hundreds years.View full abstractDownload PDF (8956K) -
[in Japanese]2005 Volume 68 Issue 2 Pages 143-144
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
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[in Japanese]2005 Volume 68 Issue 2 Pages 145
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (277K) -
Hiroshi SAIJO, Makoto SHIOJIRI2005 Volume 68 Issue 2 Pages 146-151
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSTo elucidate the problem, which has not been solved, on the morphological structure of photosensitive dyes adsorbed on gelatingrown silver halide emulsion microcrystals, our previous investigations are reviewed. The investigations were systematically performed using environmental scanning electron microscopy (ESEM), cathodoluminescence scanning electron microscopy (CL-SEM), low-voltage high-resolution scanning electron microscopy (LV-HRSEM) and atomic-force microscopy (AFM), and revealed the multilayer growth of the J-aggregate dyes. The other investigations that supported the monolayer adsorption are commented with criticism.View full abstractDownload PDF (2835K) -
Nozomu FUNYU, Makoto OGAWA, Akira NAITO, Masuo TANAKA, Shin OHNO2005 Volume 68 Issue 2 Pages 152-159
Published: April 25, 2005
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThis paper discusses the new methodology for the direct evaluation of the tonal characteristics of digital photography system. The new evaluation method is based on the lightness measurement of the displayed reproduction linear lightness step chart image on the PC monitor operated by graphic software. It was named thesoftcopy-evaluation.
On the digital photography images shot by digital still camera, DSC, the dark low-key images tended to be disturbed by random noise generated by sensor itself and thus the light high-key images are preferable for the high definition digital photography pictures. The effects of DSC for the tone reproduction were distinctively appeared on the high density region of the current densitometric curves using the linear density step chart. It was not clear in the low density part so called highlight region.
The authors proposed the new divided linear lightness step charts of the highlight, mid-range and the dark shadow regions. These were modified the original full range lightness linear step chart to compress and expand the input the data level coordinates.
The results of the softcopy-evaluation to measure the lightness of reproduction step chart images on the PC monitor, the slopes of lightness characteristic curves were apparently affected by DSC using the chart shooting. Even in the result of blight highlight chart, the slope of lightness characteristic curves of the DSCs were apparently dispersed. As the results the effect of DSC on the tonal characteristics of the reproduction images were distingished in the every tonal regions of the photographic reproduction. These results were also suggested that the selection ofDSC models tended to be the same effect as the selection of film on the current silver halide photography.View full abstractDownload PDF (2777K)
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