Patent ID: 8508807
Filing Date: 2013-08-13
Classification: H04N

Abstract:
1. An image reading apparatus comprising: a photoelectric sensor that includes a plurality of reading pixels aligned in one direction with respect to a document that each output an electrical signal depending on an amount of light from an image on the document; a read control section that reads a document image by using the photoelectric sensor in accordance with a read instruction, and obtains image data; a black correction section that performs a black correction to adjust an output under dark condition of each of the reading pixels of the photoelectric sensor to a value falling within a predetermined range, the output under dark condition being an electrical signal output obtained when an amount of light input to the corresponding reading pixel is zero; and a black correction execution determining section that determines whether the black correction section is to perform the black correction, when a read interval between each two consecutive document sheets of the document is less than a predetermined period of time.