Abstract: The cartridge comprises a container (7) of substantially parallelepipedal form with its corners radiused and rounded off. The container is provided with a back (8) having a slot (27) adapted to guide a slide (26) on the ends of which are rotatably mounted a feed spool (22) and a take-up spool (32) on which the ribbon (21) is wound. A spring (36) engaged with a stud (41) on the slide keeps the slide (26) towards the right-hand side of the container with the take-up spool (32) engaged with the pin teeth of a feed roller (42). As the turns of ribbon wound on the take-up spool increase, the slide shifts with the two spools towards the left-hand side of the container in opposition to the action of the spring. The cartridge is mounted removably on a support of the machine which is inclined with respect to the horizontal plane of the machine passing through the printing point in a manner such as to permit visibility of the printed characters.

Abstract: The typewriter comprises a character carrying daisywheel having flexible petals which is carried by a carriage that is movable transversely with respect to the platen roller. Mounted on the carriage are a motor for moving the carriage, a motor for character selection, a print hammer, a cartridge for the typing ribbon, a correction ribbon and a drive unit for advancing the typing ribbon and raising and advancing the correction ribbon. The structure of the hammer and the arrangement of the typing ribbon and the character carrying daisywheel are such that typing and reading of the line of print are possible without it being necessary for the typing ribbon to be raised. The carriage is displaced in the two directions from the current position to an intermediate position to the left of the desired position. The carriage is then positioned precisely by a tooth-type setting means after a undirectional displacement of the displacement motor.