LED printer

Details LED printer LED printer

1989-07-03

1990-08-07

Evans, Arthur G.

Recorders

Electric recording

Electrochemical

346160, G01D 1500

Patent

active

049471953

ABSTRACT:
An LED printer includes a gradient index lens array for focusing light from the LED's onto an image recording surface positioned at the image plane of the lens. A diffusion plate such as a ground glass plate is placed at the object plane of the lens array. Light from the LED's are slightly diffused by the ground glass plate and improved overlap of exposed pixels results. In one embodiment of the invention, the LED's are mounted on the plate on a "flip-chip" arrangement.

REFERENCES:
patent: 3850517 (1974-11-01), Stephany et al.
patent: 4435064 (1984-03-01), Tsukada et al.
patent: 4749120 (1988-06-01), Hatada

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