Acoustic ink jet printhead design and method of operation utilizing flowing coolant and an emission fluid
US6134291A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A droplet emitter with an array of droplet emitting devices constructed such that one flowing liquid is used to create the droplets while a second low acoustic impedance liquid can be used to both make the transfer of acoustic energy to the first liquid more efficient and help maintain a uniform temperature of the droplet emitter array. Both the emission fluid and the low acoustic impedance fluid can be circulated through the droplet emitter to allow for excess heat generated by control electronics to be transferred to the flowing. This prevents for instance excess heat build up within the droplet emitter and allows for higher more accurate droplet emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.