Journal of Printing Science and Technology
Online ISSN : 1882-4935
Print ISSN : 0914-3319
ISSN-L : 0914-3319
Volume 36, Issue 4
Displaying 1-7 of 7 articles from this issue
  • Color Matching of Large Format Printer PM-9000C
    Michinao OSAWA
    1999 Volume 36 Issue 4 Pages 226-230
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    As the print-out quality of consumer level printers improves, the use of such printers in the graphic business field and pre-press/ press fields has become possible. The EPSON PM-9000C was developed for large size printouts. It uses the same inkjet technology as consumer level printers, but has better color stability and color reproduction. Its quality in these areas is even better than other types of printers such as Laser or sublimation transfer. Color management conditions have improved such that color matching can be handled more easily. This improvement is a result of the standardization of ICC, OS environments, application environments and supported driver environments. The task of color matching for general users is still quite difficult due to the many possible ways it can be carried out. In this article I will describe the current situation for color matching of large format printers, and also describe their future direction.
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  • Application of Color Proofer to SRjet
    Yasuo NEMOTO
    1999 Volume 36 Issue 4 Pages 231-236
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    Today Computer to Plate (CTP), direct plate making from computer without using film in plate making process, tends to lead the printing technology. Digital proofer of high quality is necessary to real practical use of CTP. The paper deals with our SRjet as a digital proofer to discuss Hertz continuous inkjet technology, its technical outline and its practical use as a proofer.
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  • Superfine Pigment Inks for Ink Jet Printing
    Masao TANAKA
    1999 Volume 36 Issue 4 Pages 237-243
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    Potential and problems of pigments for ink jet application were reviewed. Micro-encapsulation technique was proposed to achieve excellent dispersibility and dispersion stability of pigment dispersions. In addition, the dispersions of micro-encapsulated pigments showed excellent resistance to water-soluble organic solvents.
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  • High Quality Ink Jet Media
    Mitsuhiro IKEDA
    1999 Volume 36 Issue 4 Pages 244-249
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    Ink Jet Media are designed to give the best possible print quality for ink jet printer system. Print quality is associated with ink absorption and dye fixing. Especially, ink absorption depends on pore size and distribution of ink absorbing layer. This review describes ink absorption mechanisms and other key technologies of paper, RC (RC means resin coated paper for photograph) and film based ink jet media.
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  • Keizo HIRAI, Katsumichi ONO, Tohichi SAKATA, Hiroshi NISHIZAWA
    1999 Volume 36 Issue 4 Pages 250-258
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    Formation of 300 polyimide patterns with a thickness of 25μm and a size of 7.6×10mm on a Siwafer with a diameter of 200mm was studied using screen printing method through a mesh screen or a mesh-less metal screen. 20 kinds of polyimide pastes which consist of polyimide particles, polyimide binders and solvents were used. It was found that only the polyimide pastes having tan δ of 0.4-0.7 at 0.1rad/s and 1.5-2.5 at 100rad/s can form polyimide patterns precisely. Using a selected paste with properly controlled tan δ, 300 patterns can be reprinted 100 times without defects.
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  • Takemi WATANABE
    1999 Volume 36 Issue 4 Pages 259-262
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    Pasting operation of offset press for newspaper is performed automatically without printing speed reduction. For preventing the miss of pasting operation, careful preparation of roll surface to be pasted is required. To handle the heavy roll efficiently for the preparation work, PPR (Paper Preparation Robot) has been adopted in the press room. Function of the PPR should include the followings; 1) removing side boards, 2) tearing off wrapped protection paper, 3) treating the end of the roll for pasting. This paper explains functions of PPR in detail and figures depict the operating views of this equipment.
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  • 4. Digital Expression of Character and Figure
    Hiroyuki OKA, Kazuhiro NAKAI
    1999 Volume 36 Issue 4 Pages 263-269
    Published: July 31, 1999
    Released on J-STAGE: September 27, 2010
    JOURNAL FREE ACCESS
    In this paper, we discuss digitizing methods of characters and graphics. First we review character sets and encoding method standards, especially Japanese characters, and digital expressions of characters such as bitmap fonts and outline fonts. Second we explain how to express shapes, colors and overlapping of graphics. Finally we describe how to rasterize graphics and characters.
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