Patent ID: 8231200
Filing Date: 2012-07-31
Classification: B41J

Abstract:
1. An ink jet recording apparatus, comprising: an inkjet head having an ejection surface in which are formed a plurality of ejection openings through which ink is ejected; a cap including: a support member; an annular protrusion which is fixed to the support member and which is to come into contact with the ejection surface, the annular protrusion cooperating with the support member to define a recessed portion for covering the plurality of ejection openings; and a discharge opening formed in a bottom surface of the recessed portion; a discharge mechanism configured to discharge, through the ink discharge opening, ink purged from the ink jet head into the cap; a plate member disposed in the recessed portion of the cap such that a space is formed between the plate member and the bottom surface and such that there is formed, between an inner peripheral surface of the cap and the plate member, a gap in which a capillary phenomenon occurs; a plurality of protrusions which are disposed on an upper surface of the plate member so as to be arranged in a longitudinal direction of the ink jet head and each of which extends in a direction intersecting the longitudinal direction; and a plurality of separations by each of which a corresponding one of the plurality of protrusions is divided into segments in the direction intersecting the longitudinal direction.