Circuit arrangement for temperature-dependent voltage regulation of piezo-electric recording nozzles in ink mosaic recording devices
AssigneeSiemens Aktiengesellschaft
InventorHans Kern
Life of this patent
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Abstract
A circuit arrangement for piezo-electric recording nozzles, in ink mosaic recording devices, to effect a temperature regulation of the control voltages therefor in which the respective recording nozzles are each provided with a control circuit for individually controlling the respective nozzles and which may be individually adjusted, in combination with a regulating circuit which is common to all of the control circuits, and includes temperature-dependent means for controlling the regulating means, whereby the latter supplies at its output a voltage which varies in accordance with the environmental temperature at such temperature-dependent means.
Claims7
A circuit arrangement for piezo-electric recording nozzles in ink mosaic recording devices to effect a temperature regulation of the control voltages therefor, comprising a control circuit for each recording nozzle, each control circuit including a voltage transformer circuit whose secondary inductance, together with the capacitance of the recording nozzle, forms an oscillating circuit, and a voltage divider having an adjustable resistor for setting the control voltage of the associated control circuit, a regulating circuit which is common to all control circuits and is connected to said adjustable resistor thereof, said regulating circuit including regulating means and a temperature-dependent resistor for controlling said regulating means whereby the latter emits at its output an output voltage which varies in accordance with the environmental temperature at said temperature-dependent resistor.
Dependencies are inferred from the claim text.