Ink jet recording head and ink jet recorder
US6467865B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04588
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Ink stored in an ink tank 11 passes through a supply path 12 and supply port 13 and fills a pressure chamber 14. A piezoelectric actuator 15 vibrates a vibration plate 17 by receiving a voltage from a driving voltage control unit 16. The volume of the pressure chamber 14 is changed by vibrating the vibration plate 17 to eject the ink in the pressure chamber 14 from a nozzle 18 toward to the sheet 2. The diameter of the nozzle 18 is set within the range of 20 to 40 &mgr;m, and an ink viscosity is set within the range of 2 to 6 mPa·s. With these settings, a fine droplet having the total diameter of 25 &mgr;m or less can be stably ejected, thereby obtaining high quality image. In addition, a driving waveform voltage is corrected in accordance with the ambient temperature detected by a temperature detection unit 19, and the ink viscosity is set within the range of 2 to 15 mPa·s, thereby keeping high image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.