Method and apparatus for driving edge-emission type electrolumin

Details Method and apparatus for driving edge-emission type electrolumin Method and apparatus for driving edge-emission type electrolumin

1993-12-15

1996-10-22

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347238, B41J 247, B41J 2435, B41J 245

Patent

active

055681786

ABSTRACT:
An apparatus for driving edge-emission type electroluminescent elements to emit light to expose an image carrier and to form image data clearly on the image carrier. The edge-emission type electroluminescent elements have electrodes and emit light when a potential difference across the electrodes exceeds a preset threshold value. Electric pulses are supplied to the electrodes of the edge-emission type electroluminescent elements to cause the potential difference across the electrodes to exceed the preset threshold value so that the edge-emission type electroluminescent elements emit light. A series of pulses are supplied for each pixel of image data. The series of pulses includes a first set of pulses supplied at a first cycle to cause the edge-emission type electroluminescent elements to emit light to expose the image carrier, and a second set of pulses supplied at a second cycle slower than the first cycle to cause the edge-emission type electroluminescent elements to emit light to maintain exposure of the image carrier.

REFERENCES:
patent: 4386352 (1983-05-01), Nonomura
patent: 5128696 (1992-07-01), Watanabe
patent: 5233370 (1993-08-01), Hara et al.
patent: 5341195 (1994-08-01), Satoh

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