| 主权项 |
1. An image recording apparatus comprising:
a supporting member having a curved surface, the supporting member configured to transport a recording medium in a transport direction while holding up one principal surface of the recording medium with the curved surface; a head having a nozzle surface having a plurality of ejection openings for discharging a radiation-curable ink arranged with a certain nozzle pitch, the head configured to discharge a radiation-curable ink from the ejection openings with the nozzle surface facing another principal surface of the recording medium help up by the curved surface so that the radiation-curable ink should reach the recording medium and form ink dots; a first irradiation section configured to irradiate the ink dots with first radiation and cure the ink dots at a first irradiation point, the first irradiation point located downstream of a dot formation point at which the ink dots are formed in the transport direction with a certain distance from the dot formation point; and a control section configured to control a transportation speed of the recording medium transported by the supporting member, the first irradiation section having a light source configured to generate the first radiation and an aperture defining reach of the first radiation emitted from the light source out of the first irradiation section, the aperture located on a supporting member side with respect to a virtual plane extending through an edge of the nozzle surface closest to the first irradiation section tangentially to the curved surface, with a time period from a time immediately after the ink dots are formed to a time when a diameter of the ink dots reaches twice the nozzle pitch defined as a first time period, the control section configured to control the transportation speed in such a manner that the ink dots formed at the dot formation point should move to the first irradiation point in a second time period equal to or shorter than the first time period. |
