Ink jet print head maintenance method
US6164752A · kind A · utility
19Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16532
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for purging an ink jet print head to clear ink jet orifices is provided. A purge cap forms a vacuum seal over the orifice plate of the print head. Multiple low pressure differential vacuum pulses are applied to the purge cap to remove debris and trapped air bubbles from the ink jet orifices. The low pressure pulses avoid cavitation inside the print head and reduce the amount of ink expelled during the purging process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.