Patent ID: 8408667
Filing Date: 2013-04-02
Classification: B41J

Abstract:
1. A liquid ejection head comprising: an ejection port for ejecting a liquid; a supply section and a discharge section for the liquid; a main flow channel which connects the supply section and the discharge section; a supply flow channel which branches off from the main flow channel and supplies the liquid to the ejection port; a filter which is disposed in the vicinity of a branch position in which the supply flow channel is branched from the main flow channel; and a sub flow channel, one end of which is connected to a first connection position closer to the supply section rather than the branch position in the main flow channel, and the other end of which is connected to a second connection position closer to the discharge section rather than the branch position in the main flow channel, wherein the main flow channel and the sub flow channel are formed such that, in supplying the liquid from the supply section to the main flow channel at a predetermined flow rate, the higher the predetermined flow rate is, the more the ratio of a flow rate in the main flow channel from the first connection position to the second connection position to a flow rate in the sub flow channel increases.