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AssigneeDe Staat der Nederlanden, te Dezen Vertegenwoordigd Door de Directeur-Generaal der Posterijen, Telegrafie en Telefonie
InventorEmil Johan Nijenhuis
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A printer, comprising a printing element which, when in operating position, is placed in a magnetic field, and is connected to a secondary winding of a transformer. This transformer has two additional secondary windings and two primary windings which are connected to a circuit so arranged that after a start pulse, two current pulses of opposite directions are successively supplied to the transformer of which only the second pulse effects movement of the printing element. The two primary windings are each connected to an amplifier, each of which supplies one of the current pulses. The input of the circuit and the amplifiers are coupled in such a way that the start pulse controls one of the amplifiers which in turn, through the two additional secondary windings and a blocking circuit, controls the other amplifier to produce the second pulse. This magnetizing of the iron in the transformer first in one direction and then in the other enables a greater change of flux to be realized with a relatively weak magnetizing current.
Printer, comprising:
A device for controlling a printer comprising:
A device for controlling a printer comprising:
Dependencies are inferred from the claim text.