Movement of fluid within printhead channels
US9156255B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Dec 22, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In one embodiment, an actuator connected to a printhead structure is activated with a waveform to cause vibration of the structure sufficient to move fluid within a printhead channel adjacent to the structure and not cause the fluid to eject from the channel during a nonprinting period. In another embodiment, a first pulse module applies a pulse at a printhead structure at a combination of voltage, duration, and frequency to cause shaking of printhead structure to move fluid within a printhead channel adjacent to the structure without ejecting the fluid from the channel during a nonprinting period. In another embodiment, an actuator connected to a printhead structure is activated during a nonprinting period to pulse the structure to move fluid within a printhead channel adjacent to the structure without causing the fluid to be expelled from the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.