Ink jet head with testing resistors
US5164747A · kind A · utility
66Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49004
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet head is provided with testing or inspection to facilitate efficient testing of the circuitry to determine whether any short-circuit or open circuits exist. The ink jet head includes plural ejection outlets for ejecting ink; a corresponding number of heat generating resistors disposed corresponding to the ejection outlets; heat generating resistors corresponding to the ejection outlets; electrodes connected to the respective heat generating resistors. The inspection resistors connect adjacent electrodes to permit inspection of electric connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.