Image reading apparatus with block lighting and pulsing

Details Image reading apparatus with block lighting and pulsing Image reading apparatus with block lighting and pulsing

1987-01-23

1990-05-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358483, H01J 4014

Patent

active

049260588

ABSTRACT:
An image reading apparatus in which a plurality of light sources are provided and the lights emitted from the light sources are incident on to photoelectric converting means from an object to be read, thereby reading an image of the object; and dividing the light sources into a plurality of blocks, for sequentially divisionally lighting on the light sources every block, and for lighting on, in a pulse-like manner, the light sources of the blocks which are not divisionally lit on.

REFERENCES:
patent: 4639608 (1987-01-01), Kuroda
patent: 4658303 (1987-04-01), Nagano

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