Printing apparatus and printing method

摘要

A printing apparatus including a print head that performs a printing pass that ejects a photocurable liquid onto a printing medium while being displaced in a main scanning direction each time the print head is displaced in a sub-scanning direction by a displacing amount of a sub-scanning operation, a first irradiation unit that follows the print head displaced in the main scanning direction while radiating light onto an area that is larger than the displacing amount of a sub-scanning operation, and a second irradiation unit that irradiates the light towards an area where irradiation of the light has been completed by the first irradiation unit. Furthermore, an integrated quantity of light of the first irradiation unit is reduced and an integrated quantity of light of the second irradiation unit is increased, in accordance with the increase in the set number of printing passes to be carried out.

主权项

1. A printing apparatus, comprising:
a print head that performs a printing pass that ejects a photocurable liquid onto a printing medium while being displaced in a main scanning direction each time the print head is displaced in a sub-scanning direction by a displacing amount of a sub-scanning operation, the sub-scanning direction intersecting the main scanning direction; a first irradiation unit that follows the print head displaced in the main scanning direction while radiating light that cures the liquid; a second irradiation unit that irradiates the light towards an area where irradiation of the light has been completed by the first irradiation unit, wherein the second irradiation unit is arranged in the sub-scanning direction with respect to the first irradiation unit; a controller that controls a first integrated quantity of light that is an integrated quantity of the light per unit area radiated on the printing medium by the first irradiation unit and that controls a second integrated quantity of light that is an integrated quantity of the light per unit area radiated on the printing medium by the second irradiation unit; and a pass number setting unit that can set the number of printing passes that is performed from a plurality of numbers, wherein the controller reduces the first integrated quantity of light and increases the second integrated quantity of light in accordance with an increase in the number of printing passes that is performed and that is set by the pass number setting unit.