Image scanner apparatus of the drum type having an efficient lin

Facsimile and static presentation processing – Facsimile – Picture signal generator

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358491, 358492, H04N 108

Patent

active

049337793

ABSTRACT:
Image scanner apparatus includes a drum having an aperture rotatable about an axis. A mechanism clamps a border of an exposed photographic film to the drum, with the film image aligned with the aperture substantially in a surface of revolution of the drum. A source of diffuse light, disposed between the rotational axis of the drum and its surface of revolution, projects a line of diffuse illumination through the aperture directly onto the film image. Lens apparatus, interposed between the surface of revolution of the drum and a linear image sensor, focuses a line of diffuse light, modulated in accordance with the film image, onto the sensor.

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