- 专利标题: LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND NOZZLE SUBSTRATE
-
申请号: EP23184175.0申请日: 2023-07-07
-
公开(公告)号: EP4303013A1公开(公告)日: 2024-01-10
- 发明人: MIZUTA, Shohei , FUKUZAWA, Yuma , MIYAGISHI, Akira , MURAYAMA, Toshiro , MADOKA, Ito
- 申请人: Seiko Epson Corporation
- 申请人地址: JP Tokyo 160-8801 1-6, Shinjuku 4-chome, Shinjuku-ku,
- 代理机构: Lewis Silkin LLP
- 优先权: JP2022109398 20220707
- 主分类号: B41J2/14
- IPC分类号: B41J2/14
摘要:
A liquid ejecting head (10) comprises a first driving element (PZ[m1]), a first pressure chamber (CV[m1]) that is partitioned on a pressure chamber substrate (34) and applies pressure to a liquid by driving of the first driving element; and a first nozzle (N[m1]) that is formed in a nozzle substrate (46), communicates with the first pressure chamber, and ejects the liquid, wherein the nozzle substrate (46) includes a first surface (FN1) and a second surface (FN2) closer to the pressure chamber substrate than is the first surface. The first nozzle includes a first upstream nozzle portion (NU[m1]) including a first supply opening (U1[m1]) opened in the second surface and a first bottom surface (U2[m1]) facing the first supply opening and a first downstream nozzle portion (ND[m1]) including a first ejection opening (D2[m1]) opened in the first surface and a first coupling section (D1[m1]) opened in the first bottom surface. When viewed in a thickness direction of the nozzle substrate, a sectional area of the first upstream nozzle portion is larger than a sectional area of the first downstream nozzle portion, and when viewed in the thickness direction, a center of gravity (GD1) of the first coupling section is positioned between a center of gravity (GD2) of the first ejection opening and a center of gravity (GU2) of the first bottom surface.
公开/授权文献
信息查询
IPC分类: