Filler for ink jet recording paper
US4915923A · kind A · utility
16Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Jun 9, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a filler for ink jet recording paper, said filler being composed of amorphous silica having a median diameter, measured by the coulter counter method, of 2 to 15 .mu.m, an oil absorption of at least 180 ml/100 g, a refractive index, measured by the solvent method, of at least 1.450, and a moisture absorption, measured when it is caused to absorb moisture for 200 hours at a relative humidity of 90% and a temperature of 25.degree. C., of at least 35%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.