Title:
DISPERSION METHOD OF WATER-BASED INKJET INK, AND WATER-BASED INKJET INK
Document Type and Number:
Japanese Patent JP2007197550
Kind Code:
A
Abstract:
To provide a dispersion method of a water-based inkjet ink capable of obtaining a stable print density.
The dispersion method of a water-based inkjet ink is characterized in that, when an organic pigment is dispersed in a solvent by using an annular-type media-type dispersing machine, an ink pigment is dispersed while the dispersion condition is being adjusted so that the total shear stress, which is determined by the rotation of the rotor of a media type dispersing machine and the movement of a media by the rotation and which is defined as σ expressed by mathematical expression (1) (wherein η is the viscosity of a system), is in the range of 1,000≤σ≤100,000.
COPYRIGHT: (C)2007,JPO&INPIT
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Inventors:
GOI KATSUNORI
IIJIMA HIROTAKA
SASAKI KUNITSUNA
IIJIMA HIROTAKA
SASAKI KUNITSUNA
Application Number:
JP2006017355A
Publication Date:
August 09, 2007
Filing Date:
January 26, 2006
Export Citation:
Assignee:
KONICA MINOLTA HOLDINGS INC
International Classes:
B41J2/01; B41M5/00; C09D11/00; C09D11/322; C09D11/326; C09D11/38
Domestic Patent References:
| JP2005220297A | 2005-08-18 | |||
| JP2005240027A | 2005-09-08 |