Patent ID: 8974040
Filing Date: 2015-03-10
Classification: B41J

Abstract:
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.