Water base pigment ink for ink-jet recording, ink cartridge...

Details Water base pigment ink for ink-jet recording, ink cartridge... Water base pigment ink for ink-jet recording, ink cartridge...

2008-04-15

2008-04-15

Lorengo, J. A. (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Marking

Reexamination Certificate

active

11101501

ABSTRACT:
A water base pigment ink for ink-jet recording contains a pigment, a propylene glycol derivative which has a saturation vapor pressure of 2 to 10 hPa and an octanol-water distribution coefficient log P of 0 to 1.35, and dipropylene glycol-n-propyl ether. The propylene glycol derivative is contained in the ink by 0.25 to 1.5% by weight, and the dipropylene glycol-n-propyl ether is contained in the ink by 0.5 to 1% by weight. The ink is excellent in the paper surface drying performance. Further, it is possible to avoid the occurrence of the feathering and the blank stripes in letters.

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