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

Giorgio Rossi

Franco Knirsch

Lucio Montanari

Dino Lavagna

An electrothermic printing unit for writing dot matrix characters on a printing line of a recording medium by means of an electrothermal printing head which is continuously movable along the printing line during the printing operation and having a column of resistive printing elements therein disposed transverse to the printing line and selectively electrically heatable in timed relation with the movement of the head characterized in that a thermosensitive inking element having a support of heat permeable material covered by a coating of material transferable for the combined action of head and pressure is interposed between the head and the recording medium, pressure means being provided for pressing said printing elements against said support and said coating against said recording medium during the movement of the head.

Electrothermal printing unit

A temperature-responsive record material for use in a thermographic recording and reproducing apparatus comprising a supporting sheet carrying a single layer containing, as the temperature-sensitive composition, a mixture resulting by a dispersion of a basic chromogenic compound and of an acidic compound in a binder having as assential binding agent a latex or a mixture of a latex with a non-ionic cellulose ether.

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Banchette (Turin),, Italy

Giorgio Rossi