Patent ID: 7963647

Claim:
Inkjet printer which comprises the following: a write head which applies ink of the photosetting type to a recording medium; and a head part with a light irradiation apparatus which irradiates the recording medium with light for setting of the ink which has been applied thereto, wherein the write head is made to apply the above described ink to the recording medium by the head part and the recording medium being moved relative to one another, and in which by irradiation of the ink which has been applied to this recording medium with light by the light irradiation apparatus, the ink is set and pictures are recorded, wherein the above described light irradiation apparatus comprises: a discharge lamp of the short arc type having a discharge vessel in which there is a pair of opposed electrodes; and a reflection component which reflects light from this discharge lamp, characterized in that said reflection component comprises a reflector which is arranged such that it surrounds the discharge lamp, and which reflects light from this discharge lamp through an opening of the reflector, and a reflection mirror with a cylindrical reflection surface which reflects the light reflected by this reflector and focuses it only in a single axial direction so that the light extends linearly transverse to a direction of transmission of light from the mirror and forms at least a first light irradiation region, and the relative position and orientation between the discharge lamp and the reflection component remain unchanged during lighting of the light irraditation device.