LED printhead, LED array chip therefor and method of making LED

Details LED printhead, LED array chip therefor and method of making LED LED printhead, LED array chip therefor and method of making LED

1995-08-23

1998-08-11

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347241, B41J 245, B41J 247, G01D 1514

Patent

active

057934053

ABSTRACT:
An LED printhead is provided which comprises at least one LED chip having a plurality of light emitting portions, and drive at least one drive IC for selectively actuating the light emitting portions of the LED chip for light emission. Each of the light emitting portions includes a laminate of gallium nitride compound semiconductor layers formed on a surface of an insulating substrate. The light emitting portions are made to emit light having a wavelength of no more than 550 nm.

REFERENCES:
patent: 4378149 (1983-03-01), Ebner
patent: 4734723 (1988-03-01), Ishitobi
patent: 5162878 (1992-11-01), Sasagawa et al.
patent: 5182757 (1993-01-01), Mori et al.
patent: 5300954 (1994-04-01), Murano et al.
patent: 5496766 (1996-03-01), Amano et al.
patent: 5585648 (1996-12-01), Tischler
patent: 5592501 (1997-01-01), Edmond et al.

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