System for introducing function control instructions into a data writing office machine

摘要

In the combination of an office machine for writing data and a source of a set of printing types including a carrier carrying such printing type set and a cassette in which the carrier is housed and which is insertable in the machine and exchangeable for other cassettes housing carriers carrying respectively different type sets, the office machine being provided with a receiving unit for receiving at least a portion of such cassette and holding such portion in an inserted position in the machine, there are provided control elements carried by the portion of the cassette and receiving members located in the region of the receiving unit to cooperate with the control elements of a cassette portion in the inserted position for initiating at least one of the operations of setting the machine to the particular printing type carried by the carrier and identified by the control elements, and supplying operating power to the machine.