Patent ID: 6406123
Filing Date: 2002-06-18
Classification: B41J

Abstract:
An ink jet recording apparatus comprising:an ink jet recording head having a surface provided with nozzle orifices from which ink droplets are ejected; and a capping member for sealing the surface provided with the nozzle orifices to apply negative pressure generated by a negative pressure generating member, the capping member including: a cap made of flexible material, which is to be abutted against the surface provided with the nozzle orifices and which defines an internal space; a cap case for holding the cap; a suction hole to which the negative pressure generating member is connected; a first passage formed in either the cap or the cap case for communicating an internal space defined by said cap with the suction hole; an air hole to which a valve introducing external air into the internal space; and a second passage formed in either the cap and the cap case for communicating the internal space with the air hole, wherein flow resistance of the first passage is larger than flow resistance of the second passage.