Apparatus for optically writing information

Details Apparatus for optically writing information Apparatus for optically writing information

1989-06-19

1991-06-11

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

358494, H01J 4014

Patent

active

050234420

ABSTRACT:
An apparatus for optically writing information comprises a row of longitudinally spaced LED array chips, a photosensitive surface arranged to face the chip row in parallel thereto, and a lens system arranged between the chip row and the photosensitive surface. Each array chip has constantly spaced LEDs to provide luminescent dots. The lens system includes convex lens elements arranged in corresponding relation to the respective array chips to form magnified images, in inverted arrangement, of the luminescent dots of the respective array chips on the photosensitive surface, so that all of the dot images on the photosensitive surface are constantly spaced.

REFERENCES:
patent: 4114037 (1978-09-01), Westwood
patent: 4539482 (1985-09-01), Nose
patent: 4550249 (1985-10-01), Damen et al.
patent: 4639127 (1987-01-01), Beery et al.

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