Patent ID: 8783824
Filing Date: 2014-07-22
Classification: B41J

Abstract:
1. A capping unit detachably mountable to an ink jet recording head, the ink jet recording head having an ejection outlet surface provided with ejection outlets for ejecting ink, the capping unit comprising: a liquid-absorbing member provided with a projection contactable to a periphery of an area, in which the ejection outlets are formed, on the ejection outlet surface so as to form a gap between the area and the liquid-absorbing member; and a capping member including (i) an elastic portion for contacting a rear surface opposite from a surface on which the projection of the liquid-absorbing member is formed to press the liquid-absorbing member against the ejection outlet surface, (ii) a first engaging portion which is provided on a first surface so as to cover an electrical connecting terminal formed on the ink jet recording head, the first engaging portion engaging with a first ink jet head engaging portion formed on the ink jet recording head to maintain a relative position between the capping member and the ink jet recording head against an elastic force of the elastic portion, and (iii) a second engaging portion which is provided on a second surface, the second engaging portion engaging with a second ink jet head engaging portion formed on the ink jet recording head to maintain a relative position between the capping member and the ink jet recording head against the elastic force of the elastic portion, wherein an interval between the first engaging portion and the liquid-absorbing member is larger than an interval between the second engaging portion and the liquid-absorbing member.