Driving device for driving and end-luminescent line head

Details Driving device for driving and end-luminescent line head Driving device for driving and end-luminescent line head

1993-08-19

1996-09-10

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

363 50, B41J 247, B41J 2435, H02H 710

Patent

active

055550134

ABSTRACT:
A driving device for driving an end-luminescent line head provided with an array of end-luminescent EL elements includes a power supply, a high-voltage unit having an input side connected to the output side of the power supply and capable of generating a positive voltage and a negative voltage, a driver for driving the end-luminescent line head, connected to the output side of the high-voltage unit, voltage detecting device for detecting the drop of the output voltage of the power supply, and discharge device having one side connected to the output side of the high-voltage unit and the other side connected to the ground. The discharge devices closed to discharge the high-voltage unit immediately after the power supply has been turned off, to protect the driver and the end-luminescent line head from destruction.

REFERENCES:
patent: 4401990 (1983-08-01), Aiba et al.
patent: 5144364 (1992-09-01), Ichikawa
patent: 5371525 (1994-06-01), Murano

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