Polymer fine particles for jet ink, process for producing the same, and jet ink comprising the same
US6034154A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1996 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Feb 9, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides polymer fine particles for a jet ink, each polymer fine particle containing a colorant, wherein the polymer fine particles have an average particle diameter in the range of 5 to 700 nm, a maximum particle diameter of at most 1000 nm, and a particle size distribution, at m value of shape parameter according to the Weibull distribution, of at least 1.3, and wherein the polymer fine particles are able to form a coating film at room temperature. By using the aforementioned polymer fine particles as essential components according to the present invention, it is possible to provide polymer fine particles for a jet ink which display a superior storage stability, resistance to wear, durability, water resistance, solvent resistance, chemical resistance and the like, in which there is no clogging of the ink jet; and a jet ink comprising the aforementioned polymer fine particles which produces clear prints over a long period of time wherein smudging of the printed matter due to water or sweat does not easily occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.