Method of driving liquid-drop-ejecting recording head, and liquid-drop-ejecting recording device
US7334856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Jul 29, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04595
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid-drop-ejecting recording head carries out image recording by applying a jetting pulse having a binary digital driving waveform to a piezoelectric element, providing a vibration wave to liquid accommodated in an accommodating chamber, and ejecting a liquid drop from a eject opening. The liquid-drop-ejecting recording head classifies each pixel in accordance with density data thereof. When recording a pixel belonging to a high density range, plural jetting pulses, whose pulse width is ½ times a natural vibration period of a liquid flow at a flow path of the liquid, are applied within a single printing cycle at an interval which is set in advance in accordance with density data of the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.