Ink printer head
US4937596A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1606
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A head part comprising ink ejection channels in the ink printer head is cast into an outer mount with a rubber-elastic casting compound. A silanization layer is situated on the side of the discharge openings of the ink ejection channels. The hydrophobic effect of this silanization layer is intensified by silicone fluid added before the casting of the casting compound, since the silicone fluid diffusing out of the casting compound and later spreads by creeping and forms a layer of silicone fluid on the silanization layer. The layer of silicone fluid is constantly replenished from the inside of the casting compound. The layer of silicone fluid also simultaneously protects the silanization layer against hydrolysis. The instant invention is suitable for all ink printer heads that operate with aqueous ink.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.