A device (1) is provided for orientating a plurality of laboratory sample cassettes (2) each having a marking surface (3) disposed on a main body (4) of the cassette (2). A cassette (2) is held by a clamp so that a printer can print on the marking surface (3) of the cassette (2). When the cassette (2) is released from the clamp, it is moved via a belt (13) to an opening (20) of a rotatable structure (15) in a cassette receiving position. When the cassette (2) has been received in the opening (20), the rotatable structure (15) is rotated so that the opening (20) is moved to a cassette releasing position. A rack (23) is positioned beneath the rotatable structure (15) in order to receive the cassette (2) from the rotatable structure opening (20) when the opening (20) is in its cassette releasing position. The cassette (2) is received into a rack slot (24) so that the marking surface (3) of the cassette (2) is at the top of the cassette (2). The rack (23) is then moved each time after it has received a cassette so that a successive rack slot is able to receive another cassette moved by the device (1) from the clamp and printer.