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Volume 56 (1993)
- Issue 6 Pages 411-
- Issue 5 Pages 351-
- Issue 4 Pages 259-
- Issue 3 Pages 167-
- Issue 2 Pages 104-
- Issue 1 Pages 3-
Volume 56, Issue 3
Displaying 1-8 of 8 articles from this issue
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1993 Volume 56 Issue 3 Pages 167-196
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (5027K) -
Objective factors of Image Quality Which Influence the Preference of Photographic Color PrintMari YAMAMOTO, Junji TOMOHIRO, Satoshi SHIOIRI, Souichi KUBO1993 Volume 56 Issue 3 Pages 197-204
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSColor and tone reproduction, graininess and sharpness are important factors to determine the image quality for photographic prints. These factors influence subjective evaluation complexly. In this paper, we have applied principal component analysis to the evaluation of the image quality of various photographic prints with different color balance, print density, print graininess and γ characteristics for 3 scenes. Our analysis indicates that the basic structure of the preference on color remains likewise the previous paper, although the factors of graininess, density and gradient are included. Also these facts were obtained that color or density of the prints which processed from 35 mm film to 2L size paper is more significiant than graininess of the prints, and in the scene which has no vivid colors, the print density is more significiant than color.View full abstractDownload PDF (3254K) -
Toshio MIYAGAWA, Yasuo SHIRAI, Motohisa TSUDA, Masaki ISHIKI, Hideyuki ...1993 Volume 56 Issue 3 Pages 205-213
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThis paper is the first one of scientific reports on Tsui-shu (wooden, urushi lacquered and engraved) cameras. These were made and used in the last days of the Tokugawa shogunate. It was considered that three sets of this kind of cameras were in existence. But today, we can see only two. The authors show X-ray computed tomograms of the camera kept in Fukui Municipal Museum of History. Coating layer on the outer surface of the wooden camera body was estimated at 6 mm thickness in maximum. Hg and Fe were detected by means of fluorescent X-ray spectroscopic analysis, as metal element components contained in the layer. It was observed that the painted crust composed of a thin coated reddish pigment-urushi lacquer layer on a heavy coated and reliefed clay-urushi layer, by means of soft X-ray photography and low magnification micrography. Computed tomograms also showed that the optical system of this camera was composed of only two pieces of single lenses and had about 17 cm of focal length. The F-number was estimated at about 7. The first lens was almost a flat plate and the second was in plano-convex type. UV-visible spectrogram showed that the former was made of glass, not quartz. It was considered that the Tsui-shu Camera was made in Japan, not in China, because of following reasons: 1) an imitative “tsui-shu” and Japanese style wooden craft, 2) the optical system, and its cloisonne wared lens cap and the outer cylider were prepared in Owari area of this country.View full abstractDownload PDF (12568K) -
Hiroyuki MATSUO, Yasuo FUKUI, Akihiro IMAI, Nobuyoshi TAGUCHI1993 Volume 56 Issue 3 Pages 214-219
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSIn order to obtain the high print density images by thermal dye transfer prining, it is necessary to increase the dye mobility and the dye content in a color material layer on a color sheet. But the increase of the indoaniline dye content and the dye mobility in a color material layer causes some troubles. That is, the print ability of the high sensitivity color sheet using indoaniline dyes remarkably decreases when the above-mentioned sheet is kept under high temperature and high humidity in dark condition for a long time.
Here in, it is reported that the reasons of the dark fading are examined and clarified in order to solve the problems.View full abstractDownload PDF (2730K) -
Noritaka EGASHIRA, Sadanari MOCHIZUKI1993 Volume 56 Issue 3 Pages 220-224
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSThe transient temperature field and dye transfer within the printing materials, caused by laser heat, were studied by means of numerical analysis and experiments. The physical model was found to be successful in predicting the experimental data fairly well. It was also found that thermal diffusivity of the base layer of the dye receiving sheet has dominant effect on the mechanisms of dye transfer.View full abstractDownload PDF (547K) -
Kazuhide SHIRATORI, Kazuya UMEYAMA, Sadao MAEYAMA, Toshiaki NAKANISHI, ...1993 Volume 56 Issue 3 Pages 225-229
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSDownload PDF (4278K) -
Hidemi SASAKI, Shinji SUZUKI, Hiroyuki HASEGAWA, Kouji MATSUURA, Kazuo ...1993 Volume 56 Issue 3 Pages 230-233
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSPalm-size Liquid Crystal Color Video Projector have been developed. The newly developed very small video projector measures about 4 inches wide by 2.5 inches high by 7 inches deep and weighs only one pound. It operates on the same rechargeable Ni-Cd battery as the 8-mm camcoder and throws 40-inch image on any flatwhite surface.
The other new model mini video projector has 3-inch rear projection monitor.
These have been realized through the studies of optical parts, light source, liquid crystal light valve unit, forced air-cooling system.View full abstractDownload PDF (384K) -
Yukako YAGI1993 Volume 56 Issue 3 Pages 234-237
Published: June 25, 1993
Released on J-STAGE: August 11, 2011
JOURNAL FREE ACCESSTelepathology system we employed is a system to support pathological diagnosis away from the station by remote control of a microscope with attached HDTV camera, and by watching image of microscope findings on the monitor which was transmitted with the aid of rapid large scale data transmission system.
In order to check the diagnostic accuracy, usefulness and disadvantage of telepathology system, and problem expected to arise therefrom, we have been conducting a series of experiments for the last two years. For the first year, we employed a real time live HDTV image, which was transmitted through an optical fiber. In the next year we used the system of ISDN (INS 64).
We found that Optical fiber-HDTV system and INS 64-HDTV system is a valuable system for consultation in histrogical and cytological diagnosis.View full abstractDownload PDF (1138K)
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