US 6,891,645 B1 · Image reading apparatus and image reading method

Abstract

An image reading apparatus in which extended image reading time is prevented when high quality image data is obtained, which image data is corrected by invisible light such as infrared light which is transmitted through an original. In a CCD scanner, visible light emitted from a light source is irradiated onto a photographic film. Infrared light emitted from the light source is reduced by an IR light reducing filter to be irradiated onto the photographic film. Visible light which has been transmitted through the photographic film is irradiated on a linear CCD by a lens unit, and the infrared light is reflected by a dichroic mirror to be irradiated on the linear CCD. Accordingly, the reading of invisible light can be effected at the same time that the reading of visible light is effected. It is therefore possible to prevent image reading time from becoming long due to the time required for the receiving of invisible light.

Claims19

Dependent claims

An apparatus for reading an image comprising:

a light source, which when operated, emits visible light and invisible light towards an image disposed along an optical path followed by the light;
a first reading device disposed downstream from the image along the optical path, the first reading device having a visible light sensor which receives light and produces electronic data in accordance with received light in visible wavelengths, when operated;
a second reading device disposed downstream from the image along the optical path, the second reading device having an invisible light sensor which receives light and produces electronic data in accordance with received light in invisible wavelengths, when operated;
a controller electronically connected to the first reading device and the second reading device, and synchronizing electronic data from the first and second reading devices with one another;
and
a correcting device electronically connected to the first and second reading devices, which receives data therefrom and corrects data from the first reading device based on data from the second reading device.

3 more elements

Dependencies are inferred from the claim text.

Image reading apparatus and image reading method

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Image reading apparatus and image reading method

Life of this patent

Abstract

Claims19