Patent ID: 8794745
Filing Date: 2014-08-05
Classification: B41J

Abstract:
1. A method of ejecting liquid from a liquid ejection head, comprising: providing a liquid ejection head comprising an ejection orifice for ejecting a liquid, a flow path for supplying the liquid from a liquid supply port holding the liquid to the ejection orifice, and a heat generating element of a rectangular form with a long-side to short-side ratio of 2.5 or more for generating thermal energy used to eject the liquid, a longitudinal direction of the heat generating element being arranged along an extending direction of the flow path; and driving the heat generating element to generate a bubble in the liquid, and allowing a meniscus of the liquid entered in the interior of the flow path from the ejection orifice during contraction of the bubble after the bubble has enlarged to communicate with the bubble on an upstream side, with respect to a liquid flowing direction within the flow path, of a longitudinal center of the heat generating element, the longitudinal center being defined with respect to the longitudinal direction, thereby allowing the bubble to communicate with outside air.