Patent ID: 8668323

Claim:
A printing device comprising: a plurality of heads configured to discharge inks cured by light irradiation and arranged in a transport direction of a medium; a plurality of pre-curing light sources provided in correspondence with the plurality of heads and configured to irradiate pre-curing light to dots formed on the medium by the heads; and a completely-curing light source configured to irradiate completely-curing light to the dots to which the light from the plurality of pre-curing light sources is irradiated, wherein a first printing mode includes discharging a background ink from one of the heads of an upstream side of the transport direction of the heads for discharging color inks; irradiating the pre-curing light to the background ink by one of the pre-curing light sources corresponding to the one of the heads that discharges the background ink; discharging, from one of the heads for discharging color inks, a color ink on the pre-cured background ink; and irradiating the pre-curing light to the color ink by one of the pre-curing light sources corresponding to the one of the heads that discharges the color ink, wherein a second printing mode includes discharging a color ink from one of the heads for discharging color inks; irradiating the pre-curing light to the color ink discharged in the in the second printing mode by one of the pre-curing light sources corresponding to the one of the heads that discharges the color ink in the second printing mode; discharging the background ink on the color ink pre-cured in the second printing mode from one of the heads of a downstream side of the transport direction of the heads for discharging the color inks; and irradiating the pre-curing light to the background ink discharged in the second printing mode by one of the pre-curing light sources corresponding to the one of the heads that discharges the background ink in the second printing mode, and wherein irradiation energy of the light irradiated by the one of the pre-curing light sources corresponding to the one of the heads that discharges the background ink in the second printing mode is less than irradiation energy of the light irradiated by the one of the pre-curing light sources corresponding to the one of the heads that discharges the background ink in the first printing mode.