A recording apparatus includes a carriage, a chamber room, a heating part and an agitating part. By performing radio discovery to receive beacon signals from neighboring access points, an initial configuration of a radio environment is generated based on the received beacon signals. The cores are joined by joining boards in a direction of the short dimension of the core. A cross-sectional area A of the score line, a width W of the score line measured based on the 30 degrees measurement method, and a distance S between the score lines adjacent to one another satisfy A\u22660.