Patent ID: 7926907

Claim:
An image recording apparatus, comprising: a rotational drum for retaining a recording medium on an outer circumference of the drum; a head retention member provided opposite to the outer circumference of the drum, the head retention member retaining a print head which prints on the recording medium by jetting ink from a plurality of nozzles; a support member which supports the head retention member at a prescribed position in relation to the drum; a head movement mechanism which makes the head retention member movable in relation to the drum; and a guide unit which regulates a movement direction of the head retention member, the guide unit comprising (i) a guide member provided in the support member, and (ii) a fit unit provided in the head retention member which slidablv fits the guide member; wherein the support member is engaged with a rotation shaft of the drum; and wherein the guide unit regulates so as to make the movement direction of the head retention member parallel with a radial direction of the drum.