Abstract: A seamless can in which an ink layer is transferred onto a can body thereof by a curved surface printing is provided. The ink layer which has been transferred has an overlapping portion which is formed by mutually overlapping a front-end portion of the ink layer and a rear-end portion of the ink layer in a circumferential direction of the can body. An ink area ratio for at least one of the front-end portion and the rear-end portion is smaller than an ink area ratio of an intermediate portion of the ink layer which is adjacent to and continuous with the overlapping portion and excludes the overlapping portion.

Abstract: By reducing a level difference between an overlapping portion and an ink layer in a portion in continuity with the overlapping portion, wrinkles caused duo to a neck-in processing are reduced, and a degradation of a film-strength in the overlapping portion is prevented. In a seamless can in which an ink layer is transferred onto a can body thereof by a curved surface printing, the ink layer which has been transferred, has an overlapping portion which is formed by an ink layer at a front-end portion and an ink layer a rear-end portion in a circumferential direction of the can body being overlapped mutually, and an ink area ratio for at least one of the ink layer at the front-end portion and the ink layer at the rear-end portion is smaller than an ink area ratio of a portion in continuity with the overlapping portion, excluding the overlapping portion.