A detachable body for a printing apparatus enables positioning a board for electrical connection to a printing apparatus, while also reducing manufacturing cost. The detachable body for a printing apparatus includes a case that is mounted to and detached from a printing apparatus that performs printing on a sheet, and a board that is attached to an attachment surface that is a surface of the case, and that is electrically connected to the printing apparatus by coming into contact with detachable body-side contacts provided on the printing apparatus when the case is mounted to the printing apparatus. The attachment surface of the case is provided with an attaching portion to which the board is attached. The attaching portion surrounds the board and positions the board in a direction along the attachment surface of the case by coming into contact with peripheral edges of the board.