| 发明名称 | Liquid ejecting apparatus and head unit | ||
| 摘要 | A liquid ejecting apparatus includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, a coil that smooths the amplification modulation signal to generate a drive signal, a piezoelectric element that deforms when the drive signal is applied thereto, a cavity that expands or contracts due to a deformation of the piezoelectric element, and a nozzle that communicates with the cavity and ejects a liquid in accordance with an increase/decrease of a pressure inside the cavity. A core material of the coil is made of a Mn—Zn-based ferrite. | ||
| 申请公布号 | US9446584(B2) | 申请公布日期 | 2016.09.20 |
| 申请号 | US201514969739 | 申请日期 | 2015.12.15 |
| 申请人 | Seiko Epson Corporation | 发明人 | Kashimura Toru;Sugita Hiroshi |
| 分类号 | B41J29/38;H01F27/24;H01L41/09;B41J2/045;H01L41/04;B41J2/14;B41J2/155 | 主分类号 | B41J29/38 |
| 代理机构 | Harness, Dickey & Pierce, P.L.C. | 代理人 | Harness, Dickey & Pierce, P.L.C. |
| 主权项 | 1. A driving circuit for driving a capacitive load comprising: a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal; a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal; a coil that smooths the amplification modulation signal to generate a drive signal; a capacitive load that drives by the drive signal, wherein a core material of the coil is made of a Mn—Zn-based ferrite, and a resistance component including a core material loss and a wire material loss is lower than 200 mΩ in the coil during a 4 MHz-operation. | ||
| 地址 | JP | ||