Thermal inkjet printhead having a preferred nucleation site
US6070969A · kind A · utility
12Cited by
16References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1994 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Mar 23, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49401
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A preferred nucleation site is established in an ink firing chamber for a thermal inkjet printhead. The cavitation barrier layer of the resistance heater substrate is created with particular surface discontinuities and a temperature profile which favor heterogeneous bubble nucleation in a predetermined area. The predetermined area is located essentially along the axis of the ink droplet expulsion orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.