Ink jet recording ink tank
US7976146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Apr 15, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink jet recording ink tank includes: an ink retention member, which to hold ink exerts a negative pressure through capillary force; and ink, which is retained in the ink retention member, for which a dynamic surface tension in a lifetime of 50 msec, obtained by a maximum bubble pressure method, is higher than an interfacial tension of the ink retention member, a dynamic surface tension in a lifetime of 5000 msec is lower than the interfacial tension of the ink retention member, and a difference between the dynamic surface tension in the lifetime of 50 msec and the dynamic surface tension in the lifetime of 5000 msec is equal to or greater than 8 mN/m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.