| 发明名称 | Nozzle plate, method of manufacturing nozzle plate, inkjet head, and inkjet printing apparatus | ||
| 摘要 | A nozzle plate having a nozzle hole that penetrates through the nozzle plate in a thickness direction is disclosed. The nozzle plate includes a discharge outlet that is formed at the nozzle hole, and provided curvatures of four corner portions of an opening shape of the discharge outlet are denoted as R1, R2, R3, and R4, the opening shape of the discharge outlet is configured to approximate the equation R1=R2≧R3=R4≈0. | ||
| 申请公布号 | US9481173(B2) | 申请公布日期 | 2016.11.01 |
| 申请号 | US201314412827 | 申请日期 | 2013.07.19 |
| 申请人 | RICOH COMPANY, LTD. | 发明人 | Ueda Naoyuki;Nakamura Yuki;Abe Yukiko;Matsumoto Shinji;Sone Yuji;Takada Mikiko;Saotome Ryoichi |
| 分类号 | B41J2/16;B41J2/14;B23P15/16 | 主分类号 | B41J2/16 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P |
| 主权项 | 1. A nozzle plate having a nozzle hole that penetrates through the nozzle plate in a thickness direction, the nozzle plate comprising: a discharge outlet formed at the nozzle hole, wherein provided curvatures of four corner portions of an opening shape of the discharge outlet are denoted as R1, R2, R3, and R4, the opening shape of the discharge outlet is configured to approximate R1=R2≧R3=R4≈0, wherein provided an opening area of the discharge outlet is denoted as S and a length of a nozzle flow path portion of the nozzle hole that is in communication with the discharge outlet is denoted as L, S≦100 μm2 and ratio L/S≧2 μm−1. | ||
| 地址 | Tokyo JP | ||