Liquid droplet ejecting device, inkjet recording apparatus, liquid droplet ejecting method, and storage medium for liquid droplet ejecting method
US9487000B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jun 17, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid droplet ejecting device includes multiple pressure chambers communicating with multiple nozzles, to contain liquid; a vibration plate, disposed extending along the pressure chambers; multiple piezoelectric elements disposed facing the multiple chambers respectively via the vibration plate; a drive waveform generator to generate a drive voltage for the piezoelectric elements; a residual vibration detector to detect a residual vibration waveform occurring within the pressure chamber after the piezoelectric elements are driven; and a controller to calculate a damping ratio of the residual vibration waveform detected by the residual vibration detector; and to determine whether abnormal ejection occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.