发明名称 |
Liquid droplet ejection head, image forming apparatus including same, and method for cleaning same |
摘要 |
A liquid droplet ejection head including a common liquid chamber, multiple individual liquid chambers communicating with the common liquid chamber, to which a liquid is supplied via the common liquid chamber, a nozzle plate containing multiple nozzles communicating with the multiple individual liquid chambers to eject the liquid, a filter disposed within a passageway between the common liquid chamber and the multiple individual liquid chambers to remove foreign substances from the liquid, and a through-hole provided adjacent to the filter to communicate with the multiple individual liquid chambers, and sealed by a frame member in which the common liquid chamber is formed. |
申请公布号 |
US8974040(B2) |
申请公布日期 |
2015.03.10 |
申请号 |
US201113312104 |
申请日期 |
2011.12.06 |
申请人 |
Ricoh Company, Ltd. |
发明人 |
Kamito Takao;Ishida Hiroya |
分类号 |
B41J2/165;B41J2/14 |
主分类号 |
B41J2/165 |
代理机构 |
Cooper & Dunham LLP |
代理人 |
Cooper & Dunham LLP |
主权项 |
1. A liquid droplet ejection head comprising:
a common liquid chamber that supplies a liquid to multiple individual liquid chambers; the multiple individual liquid chambers communicating with the common liquid chamber via a communication hole penetrating a member that forms a wall of the multiple individual liquid chambers, wherein the liquid is supplied from the common liquid chamber to the multiple individual liquid chambers via the communication hole; a nozzle plate containing multiple nozzles communicating with the multiple individual liquid chambers to eject the liquid; a filter disposed within a passageway between the common liquid chamber and the multiple individual liquid chambers to remove foreign substances from the liquid; a through-hole provided adjacent to the filter and sealed by a frame member in which the common liquid chamber is formed; and a deformable vibration plate to compress the liquid supplied to the multiple individual liquid chambers, wherein both the filter and the through-hole are disposed in the vibration plate, the through-hole penetrates the member that forms a wall of the individual liquid chambers, and an opening of the through-hole is sealed by a wall of the frame member. |
地址 |
Tokyo JP |