A printing device for performing inkjet printing, comprising: a head unit , including a nozzle row 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 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 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 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 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 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 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 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. <EOS>