Ink-jet print head
US6409310B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14274
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet print head suitable for use with pigment based inks having protective layers interdisposed between pairs of juxtaposed dissimilar metal surfaces having a relatively large electrochemical potential difference therebetween so as to substantially reduce the potential difference, thereby reducing clogging of the ink-jet nozzles. The ink-jet head further comprising a composite body formed with an array of ink jet nozzles for respectively emitting a train of ink droplets, each of said ink jet nozzles being associated with a piezoelectric transducer and adapted for flow communication with a source of pigment based ink via an ink duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.