A printing device for performing inkjet printing, comprising: a head unit, including a nozzle row (204, 206) in which a plurality of nozzles for ejecting ink drops of ultraviolet curing ink onto a medium is lined up; a main scan driver configured to drive the head unit to perform a main scan operation of ejecting ink drops while moving along a main scan direction which is predetermined; a sub scan driver configured to relatively move the head unit with respect to the medium along a sub scan direction perpendicular to the main scan direction; and a controller configured to control the main scan operation of the head unit, wherein, in the nozzle row (204, 206) of the head unit, the plurality of nozzles is lined up along the sub scan direction, the head unit is configured to perform printing on the medium in a multi-pass mode for performing the main scan operation in each of N printing passes on the same area of the medium, wherein N is an integer of three or greater, characterized in that the controller is configured to set at least a density of printing to be performed in the last k printing passes (wherein k is an integer which is equal to or greater than 1 and is less than N/2) of the N printing passes to be performed on the same area of the medium, so as to be lower than a density of printing to be performed in the (N-k)-th printing pass, and in a case where a direction from a nozzle of the nozzle row (204, 206) of the head unit for ejecting ink drops in a first printing pass of the N printing passes toward a nozzle for ejecting ink drops in an N-th printing pass is referred to as "head rear end direction", the controller is configured to set a density of printing to be performed by each of the plurality of nozzles of the nozzle row (204, 206) of the head unit that eject ink drops in the (N-k+1)-th printing pass, so as to gradually decrease toward the head rear end direction. a head unit, including a nozzle row (204, 206) in which a plurality of nozzles for ejecting ink drops of ultraviolet curing ink onto a medium is lined up; a main scan driver configured to drive the head unit to perform a main scan operation of ejecting ink drops while moving along a main scan direction which is predetermined; a sub scan driver configured to relatively move the head unit with respect to the medium along a sub scan direction perpendicular to the main scan direction; and a controller configured to control the main scan operation of the head unit, wherein, in the nozzle row (204, 206) of the head unit, the plurality of nozzles is lined up along the sub scan direction, the head unit is configured to perform printing on the medium in a multi-pass mode for performing the main scan operation in each of N printing passes on the same area of the medium, wherein N is an integer of three or greater, characterized in that the controller is configured to set at least a density of printing to be performed in the last k printing passes (wherein k is an integer which is equal to or greater than 1 and is less than N/2) of the N printing passes to be performed on the same area of the medium, so as to be lower than a density of printing to be performed in the (N-k)-th printing pass, and in a case where a direction from a nozzle of the nozzle row (204, 206) of the head unit for ejecting ink drops in a first printing pass of the N printing passes toward a nozzle for ejecting ink drops in an N-th printing pass is referred to as "head rear end direction", the controller is configured to set a density of printing to be performed by each of the plurality of nozzles of the nozzle row (204, 206) of the head unit that eject ink drops in the (N-k+1)-th printing pass, so as to gradually decrease toward the head rear end direction.