Patent ID: 7806504

Claim:
An ink-jet head protection assembly comprising: an ink jet head including a passage unit having an ejection face provided with ejection ports to eject ink and an ink passage formed therein to communicate with the ejection ports; a head cap having a confronting surface confronting the ejection face and a protrusion protruding toward the ejection face, the confronting surface including, in plan view, an area of the ejection face in which the ejection ports are formed, the protrusion having a contact surface to the ejection face surrounding, in plan view, the area of the ejection face in which the ejection ports are formed; and a support member supporting the head cap so that the contact surface is in contact with the ejection face, wherein gas is filled in a closed space defined by the confronting surface, the protrusion and the ejection face; the head cap includes a plate member having a through-hole and a film slackly attached to one surface of the plate member and covering the through-hole; the confronting surface consists of at least a part of the one surface of the plate member and a surface of the film; and the protrusion is formed on the one surface of the plate member so as to cover the through-hole in plan view.