Title:
PIGMENT INK COMPOSITION AND PAINT
Document Type and Number:
Japanese Patent JP2009029888
Kind Code:
A
Abstract:
To provide a pigment ink composition having high transparency and high-OD(optical density) color characteristics comparable to a dye even if using pigment particles, and good in weatherability inherent in the pigment particles, applicability and retainability on printing medium surface.
The pigment ink composition comprises pigment particles containing at least needle pigment particles, a dispersant and a solvent. In this composition, the above needle pigment particles is of needle shape with an aspect ratio of 3, being 5-7 in average aspect ratio, 20-30 nm in average minor axis and having such a size distribution as to be 2.0 nm in the minor axis standard deviation, and being coated with the dispersant.
Inventors:
KURIYAMA AKIRA
TEJIMA TAKAYUKI
NAKAHAMA KAZUMICHI
UENO RIE
WATANABE TAKETOSHI
SUGA TAKEO
TEJIMA TAKAYUKI
NAKAHAMA KAZUMICHI
UENO RIE
WATANABE TAKETOSHI
SUGA TAKEO
Application Number:
JP2007193904A
Publication Date:
February 12, 2009
Filing Date:
July 25, 2007
Export Citation:
Assignee:
CANON KK
International Classes:
B41J2/01; B41M5/00; B82Y30/00; C09D11/00; C09D11/322; C09D11/326; C09D11/38
Domestic Patent References:
| JP2001098207A | 2001-04-10 | |||
| JP2003128961A | 2003-05-08 | |||
| JPH10251533A | 1998-09-22 | |||
| JP2006016442A | 2006-01-19 | |||
| JP2001011339A | 2001-01-16 | |||
| JP2004307853A | 2004-11-04 | |||
| JP2008303392A | 2008-12-18 |
Attorney, Agent or Firm:
Tokuhiro Watanabe