Ing C. Olivetti C., S.p.a.

Paolo Prevignano

Francesco Bernardis

Armando Peretti

Contardo Adamoli

Francesco Tonengo

Gian F De Falco

Typing ribbon cartridge

The sheet feeder is formed by a separate unit (10) which can be easily mounted spaced from the platen roller (14) on a typewriter (12) or printer of a data processing system. The print carriers comprise either a continuous web (22) or individual sheets (20). The continuous web is advanced by pin wheels (72) and guided towards the platen roller. The individual sheets (20) which are supported on a feed tray (30) are fed one at a time by means of stripper rollers (40) and passed towards the platen roller (14). The printed sheets are passed into a collector tray (60) by means of collector rollers (54, 56). The pin wheels (72) device and the stripper rollers (40) are rotated selectively from the platen roller by way of a mechanical transmission including a clutch which is actuated by a manual control (116) to connect the pin wheels (72) or the stripper rollers (40) alternatively to the platen roller (14). The manual control also moves the paper guide (52) away from the platen for continuous form feed.

Feeder for office machines for individual sheet or continuous forms

A ballistic type wire printing head comprises a metal front support (11) for guiding the printing wires (23) and supporting a group of actuating electromagnetic units (37, 39, 41) associated with the wires. The armatures (41) of the electromagnetic units are pre-assembled on a disc (40) of plastics material. A rear cover (59) which is also of metal encloses the electromagnetic units and in its interior supports spring spider (58) which co-operates with all the armatures of the electromagnetic units. The electromagnetic units have a common internal, ferromagnetic support (35) from which heat is conducted to the front support (11) and cooling fins (25). In a second embodiment, the printing head also comprises a second group of electromagnetic units associated with another series of printing wires. In that case, an intermediate metal member acts as a cover member for the first group of electromagnetic units and as a support for the second group of electromagnetic units.

Wire printing device with internal supports for thermal conduction

A printing-needles device to write on a registration support alphanumerical characters and graphic symbols according to a dots matrix in which the dots are printed by directly inking of writing ends of the needles without interposition of inked ribbon between needles and registration support. The ink is contained in a removably mounted cartridge and is carried by capillarity from cartridge to needles by means of cloth-fibres cable which has an end dipped into ink and the other end in contact with a side of needles. The needles have opposite side guided by a lateral wall perpendicular to terminal wall which guides the writing ends.

Printing-needles device

A cartridge for an inked ribbon for printing machines, in particular wire printers, comprises a container and a pair of rollers for the feeding of the ribbon. The container comprises a storage zone, in which an inked ribbon is disposed in loops and is distributed at random, and a guide zone which surrounds the printing head of the machine. The guide zone comprises a series of ribs which twists a section of the inked ribbon through 180.degree. to form a Mobius loop. The rollers are free to move radially in corresponding seats of the container and are able to engage a pair of pins of the machine. One pin is a motor pin and rotates one of the rollers, and the other pin is a pressure pin which engages the other roller and is urged by a spring against the motor pin. The pressure pin causes the ribbon to be nipped between the two rollers to be fed by the motor pin.

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Ivrea, Italy

Paolo Prevignano