Illumination apparatus for copying machines

Photocopying – Projection printing and copying cameras – Illumination systems or details

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Details

350315, 362293, G03B 2772

Patent

active

045752281

ABSTRACT:
The disclosure describes an illumination apparatus for a xeroxgraphic copy machine which produces a copy of an original document. The illumination apparatus comprises a lamp, a shield which surrounds the lamp and has at least one aperture enabling the lamp to illuminate the original document, and at least one filter disposed between the lamp and the document for selectively controlling the intensity or wave length of the light radiated to the document. Preferrably, the illumination apparatus comprises at least two aperatures in the shield and at least two transmissively dissimilar filters, and a control apparatus, such as a control knob, belt and pulley, for selectively disposing the filters between the lamp and the original document.

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