Invention Grant
US08741984B2 Aqueous ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus 有权
水性墨水,喷墨记录方法,墨盒,记录单元和喷墨记录装置

Aqueous ink, ink jet recording method, ink cartridge, recording unit and ink jet recording apparatus
Abstract:
The invention provides an aqueous ink comprising a polymer having hydroxyl groups and a pigment, which can provide images excellent in scratch resistance and highlighter resistance and can inhibit the seeping out phenomenon of the polymer and the deterioration of ejection characteristics even when it is stored for a long period of time. The aqueous ink comprises a polymer having hydroxyl groups, a pigment and a water-soluble organic solvent, wherein the water-soluble organic solvent comprises a polyhydric alcohol having a value of number of hydroxyl groups/number of carbon atoms in its molecule of 0.50 or less.
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