Patent ID: 7488065

Claim:
An ink jet printer comprising: a plurality of pairs each of which comprises: a line print type recording head for jetting ink, which is to be cured by being irradiated with an ultraviolet ray, to the recording medium, and an ultraviolet ray irradiating device arranged on a downstream side of the recording head, the irradiating device having an ultraviolet ray source for irradiating the ink jetted by the recording head with an ultraviolet ray, after arriving of the ink at the recording medium, to cure the ink, wherein a quantity of the ultraviolet ray emitted from the ultraviolet ray source arranged on the most downstream side in the feeding direction of the recording medium, in the plurality of pairs, is set to be larger than that of the ultraviolet rays emitted from the ultraviolet ray source or the ultraviolet ray sources of the other ultraviolet ray irradiating device or each of the other ultraviolet ray irradiating devices.