Patent ID: 8602548

Claim:
An ink jet recording apparatus comprising: a head which applies liquid droplets on a recording medium by being relatively scanned with respect to the recording medium in a first direction and by ejecting the liquid droplets of a photo-curable ink composition from a plurality of nozzle holes; and a first light source and a second light source which are sequentially disposed along the first direction at a downstream side in a scanning direction of the head from the head in this order to illuminate the liquid droplets applied to the recording medium, wherein each of the first light source and the second light source is a UV light emitting diode having a peak wavelength in a range of 365 nm to 410 nm, the photo-curable ink composition has a photo radical polymerization property, after one second or less elapses from the time when the liquid droplets are applied to the recording medium, the liquid droplets are illuminated by the first light source, after 0.1 second or more and one second or less elapses from the time when the liquid droplets are illuminated by the first light source, the liquid droplets are illuminated by the second light source, so that the photo-curable ink composition is cured to have a first curing ratio of 1% to 30% by the first light source, and the photo-curable ink composition is cured to have a second curing ratio of more than 30% and 80% or less by the second light source, and a first distance in the first direction between the first light source and a nozzle hole of the plurality or nozzle holes located closest to the first light source is in a range of 10 mm to 140 mm, and the first distance is smaller than a second distance in the first direction between the first light source and the second light source.