Patent ID: 6540322
Filing Date: 2003-04-01
Classification: B41J

Abstract:
An ink jet recording apparatus comprising:a nozzle ink jet recording head including a nozzle plate having apertures for jetting an ink droplet; and a capping device having a rectangular cap unit for sealing said apertures of said nozzle plate when said recording apparatus is not used, wherein said cap unit of said capping device comprises: an ink suction port being arranged at a bottom of said cap unit for supplying negative pressure so as to exhaust ink from said apertures in a sealed state of said apertures; and a porous plate being housed between an inner bottom face and an upper open face of said cap unit, said porous plate having plural through holes for adjusting a distribution of pressure in a longitudinal direction of said cap unit, wherein a periphery of said porous plate contacts an inner periphery of said cap unit.