Patent ID: 7416273
Filing Date: 2008-08-26
Classification: B41J

Abstract:
1. A liquid ejection head, comprising: a large nozzle which ejects a large droplet of liquid; a small nozzle which has a smaller nozzle diameter than the large nozzle and ejects a small droplet of the liquid which has a smaller volume than the large droplet; at least one individual flow channel which supplies the liquid from a common flow channel to the large nozzle and the small nozzle; a first heat generating element and a second heat generating element which are provided opposite to the large nozzle and the small nozzle respectively, and apply thermal energy to the liquid in the at least one individual flow channel so as to generate a bubble causing the large droplet of the liquid to be ejected from the large nozzle and a bubble causing the small droplet of the liquid to be ejected from the small nozzle respectively; and a first liquid chamber which is provided between the large nozzle and the first heat generating element corresponding to the large nozzle, the first liquid chamber facing the first heat generating element across the at least one individual flow channel.