Liquid discharge head, head cartridge using the liquid discharge head and liquid discharge apparatus

Abstract From the Canadian patent

A liquid discharge head comprises discharge ports for discharging the liquid a bubble producing area for producing an air bubble in the liquid of liquid flow channels and a movable member, which is disposed toward the bubble producing area and displaceable between a first position and a second position farther away from the bubble producing area than the first position the liquid discharge head discharging the liquid in such a manner that the movable member is displaced from the first position to the second position by a pressure due to a bubble produced in the bubble producing area and the bubble is more greatly expanded downstream than upstream in a direction toward the discharge port due …