Patent ID: 7032990
Filing Date: 2006-04-25
Classification: B41J

Abstract:
1. A liquid droplet ejection apparatus in which a function liquid droplet is selectively ejected toward a workpiece while carrying out a relative movement between a function liquid droplet ejection head and the workpiece, said apparatus comprising: a plurality of function liquid droplet ejection heads; a carriage for mounting thereon said plurality of function liquid droplet ejection heads; a head stocker for stocking said plurality of function liquid droplet ejection heads; a head transfer mechanism for transferring each of said plurality of function liquid droplet ejection heads between said carriage and said head stocker; a moving mechanism for performing a relative movement between said carriage having mounted thereon said plurality of function liquid droplet ejection heads and said workpiece; function liquid supply means for supplying said function liquid into said plurality of function liquid droplet ejection heads; and control means for independently controlling said plurality of function liquid droplet ejection heads.