An original reading apparatus with shielding

Details An original reading apparatus with shielding An original reading apparatus with shielding

1988-11-29

1990-05-01

Kamen, Noah P.

Illumination

Elongated source light unit or support

Housing

362218, 362221, 355 30, 355 67, 355 71, F21S 300

Patent

active

049223925

ABSTRACT:
An illumination device for causing a discharge tube to emit a light by applying a high frequency electromagnetic field thereto from outside including a high frequency wave oscillating circuit, a discharge tube, and a shield for shielding the oscillating circuit and the discharge tube to prevent the adverse effect of high frequency noise. When used in an original reading apparatus of the movable optical system type, the portion of the illumination device from the high frequency wave oscillating circuit to the discharge tube is reciprocally moved as a unit with the shield.

REFERENCES:
patent: 2348617 (1944-05-01), Furedy
patent: 3807856 (1974-04-01), Rodriguez
patent: 4287554 (1981-09-01), Wolff
patent: 4477863 (1984-10-01), Walz

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