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US 2003/0166742 A1Published application
Recording liquid and ink jet recording method
AssigneesMitsubishi Chemical Corporation, Mikuni Color Ltd.
InventorsTakashi Hirasa, Kazunori Maruyama, Naomi Fujimori
Life of this patent
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Abstract
The present invention relates to a recording liquid comprising at least: a pigment (a); and a polymer (b) having one or more types of bond selected from the group consisting of amide bond, urethane bond and urea bond in the molecule, having a weight-average molecular weight of 5000 to 300000 and having an acid value of free acid of not less than 55 mgKOH/g and less than 150 mgKOH/g, the surface tension of said recording liquid being 25 to 54 dyne/cm.
Claims19
A recording liquid comprising at least:
- a pigment (a);
- and
- a polymer (b) having one or more types of bond selected from the group consisting of amide bond, urethane bond and urea bond in the molecule, having a weight-average molecular weight of 5000 to 300000 and having an acid value of free acid of not less than 55 mgKOH/g and less than 150 mgKOH/g,
- the surface tension of said recording liquid being 25 to 54 dyne/cm.
1 more element
Dependencies are inferred from the claim text.