The present invention relates to an optical recording medium having at least two information carrier layers, on which information can be written by means of a focused light beam. The devices include a heat exchanger comprising a first plate, a second plate attached to the first plate, and a first spacer and a second spacer arranged between the first plate and the second plate. The outlet group includes first outlets and second outlets, wherein the distance from the ink inlet to the first outlets differs from the distance from the ink inlet to the second outlets. The sheet material dispenser is for dispensing sheet material sized and shaped for wrapping about a piece of spent chewing gum. The convex ends of the bolts are configured to articulate inside the seat of the concave sockets.