Substrate for a thermal ink jet printhead, a colour printhead in particular, and ink jet printhead incorporation this substrate
US7008047B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 18, 2002 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Mar 18, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/15
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A substrate (10; 110; 210; 310) for an ink jet printhead comprising: at least three slots (12a, 12b, 12c) of elongated shape, oriented parallel to one another lengthwise in a vertical direction (13); three corresponding actuating banks (16a, 16b, 16c); a plurality of drive circuits (18); and a plurality of terminals (21, 21a, 21b), lesser in number than the ejection actuators (16), connected to the drive circuits (18) for receiving external signals, wherein at least two (12a, 12b) of the three slots are arranged side by side along the respective long edges in an upper portion (10a) of the substrate, and the third slot (12c) is arranged in a lower portion (10b) of the substrate, and wherein moreover the terminals (21) connected to the drive circuits are arranged in a line along the edges (11a, 11b) of the substrate (10) parallel to the slots and therefore to this given vertical direction (13). This substrate has a robust structure and is less likely to crack in the zone of the slots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.