Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-01-17
1999-08-10
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347 43, 347238, B41J 2235
Patent
active
059366575
ABSTRACT:
A fault-tolerant self-replacing xerographic light emitter array includes circuitry for operating an array of organic light emitting diodes (OLEDs). The light emitter array provides imaging from a single row of imagers which operate at high brightness and high current. The emitter area is extended by having multiple rows of emitters. When one or more of the pixels of a currently-selected row burns out or decays to a level insufficient for imaging, a new row is activated and imaging continues. This is possible because the emitter rows are closely spaced and share an optical lens wide enough to collect light with adequate throughput for all rows. This redundancy permits imaging to continue without adjusting or replacing any mechanical parts of the emitter array. In addition, because of the fault-tolerant design, a single bad row or pixel does not render the device unusable. This technique is applicable to a variety of emitters or light valves, but is particularly suited to inexpensive OLEDs. The fault-tolerant active matrix xerographic light emitter array extends the lifetime of a single row printbar by the number of rows of emitters.
REFERENCES:
patent: 4596995 (1986-06-01), Yamakawa et al.
patent: 5043743 (1991-08-01), Habets et al.
patent: 5124720 (1992-06-01), Schantz
patent: 5198803 (1993-03-01), Shie et al.
patent: 5517151 (1996-05-01), Kubota
patent: 5668587 (1997-09-01), Hammond et al.
patent: 5671002 (1997-09-01), Murano
patent: 5693956 (1997-12-01), Shi et al.
patent: 5719589 (1998-02-01), Norman et al.
Le N.
Nguyen Lamson
Xerox Corporation
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