Inkjet recording head
US6059395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Jan 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2125
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A recording head comprises a first head member that expels large-diameter ink drops and a second head member that expels small-diameter ink drops. Each of the first head member and the second head member is integrally assembled with a top plate, a partition, a vibration plate and a substrate, which are stacked together one on top of the other. The top plate has multiple groove-shaped concave areas in its surface which faces the partition. Covering these concave areas with the partition forms ink cavities housing ink, ink supply chambers housing resupply ink, and ink inlets connecting the ink cavities to their respective ink supply chambers in first head member and second head member. In addition, nozzles connected to the ink cavities are formed in the side opposite from the ink inlets on the top plate. The cross-sectional areas of the ink inlets of the first head member perpendicular to the direction of ink flow are made smaller or the lengths of said ink inlets are made longer than those of the second head member in the direction of ink flow. In contrast, the configurations and sizes of the nozzles of the first and the second head members are identical, and their impedances are al…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.