Electrostatic recorder with three state switching
AssigneeTokyo Shibaura Electric Co., Ltd.
InventorsJun-ichiro Ikeuchi, Teruo Tsutsumi
Life of this patent
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Abstract
An electrostatic recorder includes first drive pulse generators each for generating high voltage pulses in response to recording signals and second drive pulse generators so driven in turn as to generate high voltage pulses in response to outputs from a ring counter. Outputs from said first drive pulse generators are respectively supplied to recording electrodes via diodes, and outputs from said second drive pulse generators are respectively supplied to the corresponding electrode groups of said recording electrodes via respective resistors connected to the recording electrodes of the electrode groups in a manner corresponding thereto.
Claims11
An electrostatic recorder comprising:
- a plurality of recording electrodes aligned in a line at prescribed intervals and divided into a plurality of electrode groups;
- a plurality of series members each comprising a diode and main resistor connected in series and having a common connection point connected to one of said recording electrodes;
- a plurality of first drive pulse generators each having an output terminal connected to a given one of the recording electrodes included in each of said plurality of electrode groups via the diode and operated in response to recording signals to generate high voltage pulses;
- a plurality of second drive pulse generators each of which has an output terminal connected via the main resistor to the recording electrodes included in the corresponding one of said electrode groups and which are sequentially operated in response to control signals to generate high voltage pulses;
- said first and second drive pulse generators each having an additional resistor connected between its output terminal and a point having a predetermined potential;
- a rear electrode provided in common for the plurality of electrode groups;
- the resistance ratio of the main and additional resistors having a value permitting a semi-selected voltage of 50 to 70 percent of a recordable voltage to be applied to the recording electrodes corresponding to non-actuated first drive pulse generators belonging to the recording electrode group corresponding to an actuated second drive pulse generator.
Dependencies are inferred from the claim text.