Ink jet recording ink and ink jet recording method
US5883157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Ink for ink jet recording containing water, a coloring material and a water-soluble organic solvent, containing 0.01 to 5 wt % of a polymer containing a carboxylic group or polymer having salt of a carboxylic group, having an acid value of 50 to 700; and 0.001 to 5 wt % of a surface active agent, wherein the foaming surface viscosity of the ink is 0.05 to 1.0 g/s. The polymer is a copolymer of hydrophobic .alpha., .beta.- unsaturated ethylene monomer and a monomer having a plurality of hydrophilic --COOM groups (wherein M is hydrogen, alkali metal, or an onium compound including ammonium ion, organic ammonium ion, phosphonium ion, sulfonium ion, oxonium ion, stibonium ion, stanonium and iodonium), a monomer having acid anhydride thereof or a monomer containing ester thereof. The ink for ink jet recording and the ink jet recording method according to the present invention provide an image having a high optical density, without unevenness and free from feathering and bleeding. Moreover, clogging of the nozzles and disorder in ink discharge can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.