CASSETTES

摘要

A cassette comprising a first part and a second part, said first and second parts being relatively movable, said cassette comprising at least one printing supply and control means, said control means being arranged when one of said first and second parts is moved relative to the other of said first and second parts to cause the cassette to change from one of a first condition and a second condition to the other of said first and second condition, said first condition being one in which rotation of at least one printing supply is prevented and said second condition being one in which rotation of at least one printing supply is permitted.