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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 2
Displaying 1-8 of 8 articles from this issue
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CTP Technology -CTP Workflow System-Kenichi SOMA1999 Volume 36 Issue 2 Pages 82-90
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThough the digitization of pre-press process was popularized and it did and long, as a matter of fact, many of DTP and CEPS process were only the processes to make data on single page as for being digitizing it. Various CTP workflow systems are provided from pre-press vendors, as well. But, there are many subjects because an analog process must be digitized newly by the printing company, too. Imposition process, proofreading process, last minutes change correction process, plate making process are still full-analog processes themselves. The CTP workflow is to digitize these traditional processes. CTP workflow begins in the place to receive the page data completed with DTP and so on. It is important that the prediction of the output result can be done securely, and it is necessary that therefore each page is the data that it was independent. Using a predictable data format solves some problems. PostScript data received from the DTP process is translated predictable data format. But, there is a problem in being the standard, which several predictable data formats, are characteristic of. It is hoping that CTP manufacturers standardize each of their predictable data formats.View full abstractDownload PDF (1816K) -
Platesetter Technology UpdateToshio KASAMATSU1999 Volume 36 Issue 2 Pages 91-96
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSThe platesetter has a long history. Its development started in 1970, but it has just recently seen mass installation worldwide. The demands of low cost production and fast turnaround have become critical issues for the printing business. These demands, and the progress of digital workflow, have now made the platesetter widely accepted by the market. This paper provides a technology update on platessetters able to output aluminum-based plates. It covers the optical systems and plate material combinations; the three plate exposing technologies, flat-bed, internal drum, and external drum; and mechanisms of plate handling, such as punching and automatic loading. Also presented are an explanation of the platesetter as a component of a workflow system, and an overview of the CIP 3 print production format.View full abstractDownload PDF (2973K) -
The Progress of Plate Technology for Computer-To-Plate SystemNobuyuki KITA1999 Volume 36 Issue 2 Pages 97-104
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSSince Computer-To-Plate (CTP) systems have been presented as practical technology at DRUPA 1995, its market has grown remarkably. This expansion of the market was produced by customer oriented CTP system development. A lots of photon-mode or thermal-mode CTP plates and suitable platesetters have been launched in the meanwhile. Features and recent progresses of laser sensitive plate technologies are reviewed below.View full abstractDownload PDF (2405K) -
Technical Trend of DDCP -DDCP toward the Age of CTP-Katsuyuki TAKEDA1999 Volume 36 Issue 2 Pages 105-110
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSAccording to the recent spread of CTP (Computer-to-Plate), the importance of DDCP (Direct Digital Color Proof) becomes greater and greater, because the DDCP system is a key element of a CTP workflow. In this paper, comparing the feature of some DDCP products, the technical trend and the current status of DDCP is surveyed.View full abstractDownload PDF (1948K) -
Michitaka NONAKA, Masatsugu ISODA1999 Volume 36 Issue 2 Pages 111-117
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSOne of the main causes of the difference between color photography and printing based on color image reproduction by superimposing C, M, Y and BK halftone dots on paper is the optical dot gain arising from light diffusion through paper substrate. Neugebauer's equation is famous for describing the color print based on halftone dots, but it is very complicated. By assuming additivity of solid optical densities Neugebauer's equation can be resolved into factors and can be transformed into Pollak's equation. By introducing our correction terms for optical dot gain into Pollak's equation through our own method, color reproduction superimposing four color halftone dots is described satisfactorily in the form of spectral reflectance. Our correction terms are quadratic equations of dot area and they have coefficient kλ's.View full abstractDownload PDF (1760K) -
Takao MURUI, Hiroshi WAKAYAMA1999 Volume 36 Issue 2 Pages 118-122
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIn the first place, news paper printing process is classified by some subsystems such as typesetting, plate making, printing, and mailing. Secondly, function, man-machine interface and data flow of each subsystem are introduced from the standpoint of workflow.View full abstractDownload PDF (1930K) -
The Improvement of Static PropertyMasayuki FUKUDA1999 Volume 36 Issue 2 Pages 123-129
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIn order to solve the static charge problem, many counter measures have been proposed. To cite some examples, a humidifier, a static charge eliminator and modification of material itself are included and their effectiveness has been proved. In this paper, anti-static technologies by means of surface treatment of plastic materials have been discussed.View full abstractDownload PDF (1259K) -
2. Digital CameraKenji TOYODA1999 Volume 36 Issue 2 Pages 130-135
Published: March 31, 1999
Released on J-STAGE: September 27, 2010
JOURNAL FREE ACCESSIn the stream of computerization of printing process, only the image input devices have been left behind, and most image data are still made by conventional silver-halide cameras. However, recent development in digital camera technology indicates the posibility of full digital system, where whole printing process is accomplished without making silver-halide negs, prints or reversals. Here, the author compares the digital camera with the conventional camera, describes advantages and disadvantages of each system and also describes present situation of digital cameras.View full abstractDownload PDF (2538K)
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