Abstract: A liquid ejection head includes a channel member, a pressurizing part, a cover member, and a sealing member. The channel member includes an ejection hole, a pressurizing chamber, an ejection hole surface, and a pressurizing chamber surface. The pressurizing chamber is connected with the ejection hole. The ejection hole surface is positioned on the ejection hole side. The pressurizing chamber surface is positioned on the pressurizing chamber side. The pressurizing part is positioned in a pressurizing region in the pressurizing chamber surface. The cover member stands on the channel member. The sealing member seals the cover member and the channel member. The channel member includes a groove positioned in the pressurizing chamber surface but outside the pressurizing region. The cover member is positioned in the groove. Further, the sealing member is positioned between a fixing portion in the cover member which is positioned in the groove and the groove.

Abstract: A liquid ejection head includes a channel member, a pressurizing part, a cover member, and a sealing member. The channel member includes an ejection hole, a pressurizing chamber, an ejection hole surface, and a pressurizing chamber surface. The pressurizing chamber is connected with the ejection hole. The ejection hole surface is positioned on the ejection hole side. The pressurizing chamber surface is positioned on the pressurizing chamber side. The pressurizing part is positioned in a pressurizing region in the pressurizing chamber surface. The cover member stands on the channel member. The sealing member seals the cover member and the channel member. The channel member includes a groove positioned in the pressurizing chamber surface but outside the pressurizing region. The cover member is positioned in the groove. Further, the sealing member is positioned between a fixing portion in the cover member which is positioned in the groove and the groove.

Abstract: A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC positioned away from the second surface of the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate extending in one direction that is a direction from the top plate toward the second surface, the first side plate includes a first portion that is in contact with the drive IC, and that extends in the one direction, and a second portion positioned in a portion closer to the second surface than the first portion, and the second portion includes a diameter expanding portion having a diameter that expands toward the second surface.

Abstract: A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC configured to drive the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate that is connected to the top plate and that is in contact with the drive IC, and in the head cover, a thickness of the first side plate is thinner than a thickness of the top plate.

Abstract: A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC configured to drive the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate that is connected to the top plate and that is in contact with the drive IC, and in the head cover, a thickness of the first side plate is thinner than a thickness of the top plate.

Abstract: A liquid discharge head according to an embodiment includes a head body having a first surface configured to discharge a liquid and a second surface facing the first surface, a drive IC positioned away from the second surface of the head body, and a head cover configured to cover at least the second surface of the head body while housing the drive IC. The head cover includes a top plate facing the second surface of the head body and a first side plate extending in one direction that is a direction from the top plate toward the second surface, the first side plate includes a first portion that is in contact with the drive IC, and that extends in the one direction, and a second portion positioned in a portion closer to the second surface than the first portion, and the second portion includes a diameter expanding portion having a diameter that expands toward the second surface.

Abstract: A liquid ejection head includes a channel member, a pressurizing part, a cover member, and a sealing member. The channel member includes an ejection hole, a pressurizing chamber, an ejection hole surface, and a pressurizing chamber surface. The pressurizing chamber is connected with the ejection hole. The ejection hole surface is positioned on the ejection hole side. The pressurizing chamber surface is positioned on the pressurizing chamber side. The pressurizing part is positioned in a pressurizing region in the pressurizing chamber surface. The cover member stands on the channel member. The sealing member seals the cover member and the channel member. The channel member includes a groove positioned in the pressurizing chamber surface but outside the pressurizing region. The cover member is positioned in the groove. Further, the sealing member is positioned between a fixing portion in the cover member which is positioned in the groove and the groove.