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Volume 36 (1999)
- Issue 6 Pages 346-
- Issue 5 Pages 298-
- Issue 4 Pages 226-
- Issue 3 Pages 148-
- Issue 2 Pages 82-
- Issue 1 Pages 2-
Volume 36, Issue 3
Displaying 1-9 of 9 articles from this issue
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Computer-to-Plate by Laser Ablation TechnologyHiroaki YOKOYA1999 Volume 36 Issue 3 Pages 148-151
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThe CTP plate technology based on laser ablation has high potential to provide processless plate. These plates are also important as plates applicable for Computer to Cylinder (CTC). The status of CTP plates based on laser ablation technology is reviewed. The recent development of sensitometry and reciprocity failure results of a laser ablation plate are also discribed.View full abstractDownload PDF (937K) -
Phase-changeable CTP -Development Free CTP Technology-Gensho TAKAHASHI1999 Volume 36 Issue 3 Pages 152-158
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSMany technical methods to realize the development free CTP have been proposed, are able to be classified to three technical categories. That is, additive technique like transferring method or ink-jet method, formation or morphology changing technique like ablation method or surface roughness changing method and phase changing technique. On this paper, the phase changeable CTP technology is mainly reviewed on the basis of patent literature. The key technical point is how to design the mechanism to change hydrophilic phase to lipophilic phase, or the opposite, after laser imaging and to develop the most suitable materials to realize the designed mechanism. Two methods expected to be practical which are chemical composition changing and chemical functional group or chemicals changing are detailed. The development free CTP has been asked as the ideal plate in the future for a long time, now it is strongly demanded for the plate on CTPress system.View full abstractDownload PDF (1377K) -
Application of Ink Jet Technology to CTPNobuhiro NOTO, Shigenori SUEMATSU1999 Volume 36 Issue 3 Pages 159-163
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSCTP (Computer-To-Plate) systems became widely known following their announcement in 1995 by many printer manufacturers at DRUPA95 in Germany. They offer an attractive method for reducing time and cost of making printing plates. At present, the most popular CTP system is a laser scanning system which is sold worldwide. Recently, however, because of environmental considerations, a need has arisen for systems which do not require the disposal of used developers. Ink jet technology meets this requirement and can therefore offer an environmentally friendly solution for society's present and future needs.View full abstractDownload PDF (771K) -
Digital Press TechnologyYoshikazu TANAKA1999 Volume 36 Issue 3 Pages 164-169
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSDigitization of the information industry is beginning to revolutionize the traditional concepts of the printing industry. The explosive popularity of the internet and other new technologies has accelerated the trends toward ever increasing “speed” and “common ownership of information” more than ever, making them both vital keywords in the new industry vocabulary. Digital printing has now debuted and a number of plate and plateless models have been released or presented. This document introduces some representative examples of these systems, including plateless models which use powder/liquid toner or electro-coagulation.View full abstractDownload PDF (1731K) -
Katsumi ISHII, Makoto OMODANI, Yasusuke TAKAHASHI1999 Volume 36 Issue 3 Pages 170-174
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSTwo-tone color prints are often commercially used for simplified color image reproduction. We sometimes can recognize the color which should not be expressed by the inks of two colors. The purposes of this study are to confirm the existence of this type of color recognition and to discuss the reason. Objective tests and subjective tests are carried out for these purposes. The recognition of yellow color in the prints made with cyan and magenta inks are confirmed by the subjective tests. The results of objective tests indicate that chromaticity coordinates in that print are not in the physically yellow area on chromaticity plane. The reason is discussed in relation to memory color, color constancy, and chromatic adaptation.View full abstractDownload PDF (1160K) -
Kazunori SAITOH1999 Volume 36 Issue 3 Pages 175-180
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIn recent times, the specifications of commercial web offet presses have been improved and have resulted in shorter make-ready times and higher cost efficiency. The improvement has been caused mainly by the progress of control systems for web offset press and surrounding automations. The author would like to introduce the contents of the control systems in details on the basis of the total management system of printing named “Komori HIPER System”. This control system contains four functions; Preparation of printing, Press control, Print quality control and Workflow management. Operations, display and control items for each function are described in this paper.View full abstractDownload PDF (2140K) -
High Quality Hard Copy PaperNoritaka EGASHIRA1999 Volume 36 Issue 3 Pages 181-185
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSRecently the scene that digital images are handled in various fields, has increased. Therefore, the output of high quality images has become necessary. Several technologies are coming to be able to correspond, as the method that those images are output. We can get high quality image output methods, dye sublimation thermal transfer, inkjet and Thermo-Autocrome etc. Here, features of the record paper of dye sublimation thermal transfer is explained compared with inkjet and Thermo-Autochrome. Some durability of output images by each method are evaluated.View full abstractDownload PDF (1190K) -
Display-Wide-Viewing-Angle Film, Anti-Reflection FilmYukio SHINAGAWA1999 Volume 36 Issue 3 Pages 186-190
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThe TFT-LCD continues to be one of the most promising LCDs, but also suffers from various degrees of inadequate color reproductions when viewed from any position except directly in front. On the other hand, PDP and flat surface TV are recently coming into wide use as a large screen display. Anti-Reflection performance is very important to increase the image quality of a large screen display. In this report, Wide-Viewing-Angle film for TFT-LCD and Anti-Reflection film for LCD, PDP and flat surface TV are explained.View full abstractDownload PDF (2456K) -
3. Digital Technology in ScannersKeigo SHIMIZU1999 Volume 36 Issue 3 Pages 191-198
Published: May 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSScanners play a key role as data entry points for digitized printing systems. This document primarily describes CCD flatbed scanners as “analog” to “digital” conversion systems. It also discusses why drum scanners achieve such outstanding image quality, and the development of new scanner functions like the capture of legacy separation film images, spurred by the rapid spread of CTP (Computer-To-Plate) systems.View full abstractDownload PDF (1545K)
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