Journal of the Japan Society of Colour Material
Online ISSN : 1883-2199
Print ISSN : 0010-180X
ISSN-L : 0010-180X
Search
Advanced search
OR
Browse
Search
Volume 70, Issue 5
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Dynamics of Ink Jet Printing
    (1) Ink droplet formation and physical properties of jet ink
    Kenji SUZUKI, Takeshi AMARI
    1997 Volume 70 Issue 5 Pages 291-299
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.291
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The process of ink droplet formation in ink jet printing is observed by the microimage-monitoring system synchronized with a printer head driver. Effects of viscosity and surface tension of jet ink on size and velocity of ink droplet were mainly investigated. The physical properties of jet ink were adjusted with the addition of polye (thylene glycol) and isopropyl alcohol. With increasing viscosity and decreasing surface tension, the velocity of an ink droplet decreased, and the size was also slightly decreased. These phenomena can be analyzed with Reynolds number.
    Sphericity of an ink droplet decreased with increasing viscosity. Satellite formation and its merger into the main ink droplet are of particular interest, but the relations between the satellite and physical properties of jet ink were not so clear. From a viewpoint of printability, jet inks with higher Reynolds number, higher surface tension, and lower viscosity are recommended
    View full abstract
    Download PDF (1062K)
  • New Modification of Silica Powder with Sulfonic Acid Group and Their Properties
    Yukiya YAMASHITA, Hideaki SAKURAI, Akira NISHIHARA
    1997 Volume 70 Issue 5 Pages 300-307
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.300
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A new modification of silica powder (Aerosil) with sulfonic acid group was achieved. A new alkoxysilane containing isopropyl sulfonate group [(CH3O) 3Si (CH3) 3SO3CH (CH3) 2, [3- (Trimethoxysilyl) propyl] isopropylsulfonate, TIS]] was prepared. Through fixation and pyrolysis of TIS on silica surfaces, new surface-modified Aerosil (SMA) with sulfonic acid group was obtained. Conversion from isopropyl sulfonate group to sulfonic acid group on silica surface was reached 90%.
    It was revealed that the new SMA had the following properties : (1) high trapping ability for several cations (Na+, Ca2+, Cu2+ and Fe3+ : ca. 0.3mmol/g) and (2) high dispersibility in water. The adsorption equilibrium was reached within several seconds. The adsorption amount was not influenced by the concentration of the cations in aqueous solution. The new SMA showed homogeneous dispersion after two-week standing in pH 2. Some mechanisms originated from sulfonic acid functional group were presumed for these properties.
    View full abstract
    Download PDF (900K)
  • Synthesis of an Acrylic Polymer Having a Chromophore as the Pendant Group and Its Adsorption Behavior onto a Pigment
    Hideo ISHIBASHI, Toshikatsu KOBAYASHI
    1997 Volume 70 Issue 5 Pages 308-314
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.308
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Organic pigment molecules with conjugated >C=O and >NH groups, such as quinacridone and indigo, could be dissolved in a polar aprotic solvent, dimethyl sulfoxide, by interaction with a strong base, potassium alkoxide. A direct potentiometric titration in the polar aprotic solvent elucidated that those pigment molecules behaved as acid against the potassium alkoxide and were charged negatively. When an acrylic copolymer having a pendant electrophlic epoxide group was reacted with the pigment molecules, an acrylic polymer having a chromophore as the pendant group was found to be synthesized by the addition reaction.
    The adsorption behavior of the above obtained polymer onto the organic pigment having the same chromophore structure was investigated. The polymer with a chromophore showed higher adsorption amount and affinity to the pigment than the polymer without chromophore. The chromophore pendant polymer seemed to be useful as a novel pigment dispersant.
    View full abstract
    Download PDF (711K)
  • Trend of Development in Zinc Based Electroplating Bath
    Katsumi KANDA
    1997 Volume 70 Issue 5 Pages 315-325
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.315
    JOURNAL FREE ACCESS
    Download PDF (1895K)
  • Preparation of New Carbon Materials Using Template Carbonization Method
    Takashi KYOTANI, Akira TOMITA
    1997 Volume 70 Issue 5 Pages 326-334
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.326
    JOURNAL FREE ACCESS
    Download PDF (2438K)
  • Inorganic Antimicrobial Agent : Zeomic
    Kivntaka KUDO
    1997 Volume 70 Issue 5 Pages 335-343
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.335
    JOURNAL FREE ACCESS
    Download PDF (1145K)
  • Publication Gravure Inks and Packaging Gravure Inks
    Teruto TANDA
    1997 Volume 70 Issue 5 Pages 344-350
    Published: May 20, 1997
    Released on J-STAGE: November 20, 2012
    DOIhttps://doi.org/10.4011/shikizai1937.70.344
    JOURNAL FREE ACCESS
    Download PDF (797K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top