Patent ID: 7293860
Filing Date: 2007-11-13
Classification: B41J

Abstract:
1. A droplet ejecting head including a nozzle plate through which are formed a plurality of nozzle holes each for ejecting a droplet therethrough, each of the nozzle holes comprising: a jetting end which is open at a first one of opposite surfaces of the nozzle plate; an inflow end which is open at a second surface of the nozzle plate; a taper portion between the jetting end and a vicinity of the inflow end, at the taper portion a diameter of the nozzle hole linearly increasing from the jetting end to the vicinity of the inflow end so that the taper portion has a taper angle; a connecting portion comprising a surface connecting an end of the taper portion and the inflow end, at the connecting portion the diameter increasing more greatly than at a surface which is obtained if the taper portion is extended at the taper angle; and where D