COATING METHOD OF BUILDING BOARD, COATING APPARATUS OF BUILDING BOARD AND COATED BUILDING BOARD

摘要

PROBLEM TO BE SOLVED: To provide a coating method of a building board, which can make an end face of the building board inconspicuous when the building boards are adjacently installed.SOLUTION: The coating method of the building board comprises coating a surface 2 of a building board 1 by spraying an ink 10 through ink jet printing. The coating method further comprises: spraying the ink 10 by using the ink jet printing to coat an outer peripheral surface 9 of an end face transfer roll 8; and transferring the ink 10 on the outer peripheral surface 9 to an end face 3 of the building board 1 by rotating the end face transfer roll 8.