Redundant input signal paths for an inkjet print head
US6318846A · kind A · utility
2Cited by
7References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/0458
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a thermal ink jet print head, individually-controlled heating elements are separated into groups of heating elements. Redundant control lines for the separate groups of heating elements increase the print head's reliability by reducing the likelihood that a print head will be completely disabled by an electrical fault on the control lines that in prior art devices extended to all of the heating elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.