Patent ID: 7204576

Claim:
A liquid ejection head comprising: a flow path unit including a nozzle having a nozzle opening for ejecting a liquid, and a pressure chamber communicating with the nozzle in which a pressure of the liquid is changed; a head case on a surface of which the flow path unit is attached so that the nozzle opening is located on the surface of the head case; a head cover attached on the head case for protecting the liquid ejection head, the head cover comprising: an opening portion from which the nozzle face is exposed, a frame portion surrounding the opening portion and supporting a peripheral edge portion of the flow path unit so that the flow path is attached to the head case, at least one protective wall portion extending from the frame portion so as to cover a side face of the head case, and a support portion formed integrally with the protective wall portion by being bent from the protective wall portion so as to extend to a surrounding direction, the support portion is adjoined to the head case; wherein a liquid restricting portion for restricting an invasion and/or storage of liquid between the head case and head cover is formed on the head cover, wherein a plurality of the protection wall are provided as said at least one protection wall and adjacent two walls of the four protective walls do not intersect with each other, and wherein the liquid restricting portion is provided as a structure that an end face in a direction of a width of each of the protective wall portions includes a chamfered portion chamfered so as to reduce a width of each of the protective wall portions along a direction of being apart from the frame portion.