Image reading apparatus and image forming apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorNaoya Murakami
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Abstract
An image reading apparatus comprises a four line CCD sensor for receiving a light reflected by a reading object and outputting either or both of a monochromatic image signal and a color image signal of R, G, and B and a correction circuit for executing shading correction for the monochromatic image signal and color image signal. The correction circuit, according to an image reading mode for the reading object or a reading state, switches a correction operation of executing the shading operation for either or both of the monochromatic image signal and color image signal of R, G, and B.
Claims10
An image reading apparatus comprising:
- a four line CCD sensor to receive a light reflected by a reading object and output either or both of a monochromatic image signal and a color image signal of R, G, and B;
- and
- a correction circuit to execute shading correction for the monochromatic image signal and the color image signal;
- wherein the correction circuit switches a correction operation of executing the shading correction for either or both of the monochromatic image signal and the color image signal of R, G, and B according to an image reading mode for the reading object or a reading state.
An image forming apparatus comprising:
- a four line CCD sensor to receive a light reflected by a reading object and outputting either or both of a monochromatic image signal and a color image signal of R, G, and B;
- a correction circuit, according to an image reading mode for the reading object or a reading state, switches an operation of executing a shading correction for either or both of the monochromatic image signal and the color image signal of R, G, and B outputted from the four line CCD sensor;
- and
- an image forming unit to form an image on the basis of either or both of the monochromatic image signal and the color image signal for which the shading correction is executed by switching the operation of the correction circuit.
Dependencies are inferred from the claim text.