Patent ID: 8246153

Claim:
A bubble control unit for a liquid ejecting head which ejects liquid from a nozzle, the unit comprising a liquid channel through which the liquid is supplied to the nozzle, wherein the liquid channel includes: a first chamber; a second chamber disposed on the upstream side from the first chamber; a first communicating path which has a bubble chamber extending upward from the first chamber, and makes the liquid within the second chamber to flow into the first chamber from a first communicating path inlet of the second chamber; a second communicating path which is provided with a second communicating path inlet below the first communicating path inlet, separately from the first communicating path inlet, and makes the liquid within the second chamber to flow into the first chamber from the second communicating path inlet; a sealing member to seal the liquid channel from both sides of a channel member body; and a seal valve configured to adjust the pressure of the liquid on the upstream side and disposed on a side of the second chamber.