High print quality printhead
US6491377B1 · kind B1 · utility
45Cited by
38References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14475
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A high quality inkjet printhead includes a substrate having a multiplicity of heater resistors formed thereon at a density of at least six heater resistors per square millimeter. Each of the heater resistors also has a total resistance of at least 70 &OHgr; and an overlaying passivation thermal barrier characteristic adjusted to enable ejection of an ink drop of less than 6.5 ng with an energy impulse equal to or less than 1.4 &mgr;joules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.