Patent ID: 8358445

Claim:
An image reading apparatus comprising: an image reading unit; a work memory configured to store image data generated by said image reading unit reading an original; a comparing unit configured to compare a size of the image data with a size of a region for storing the image data in said work memory; a dividing unit configured to divide the image data when the size of the image data is larger than the size of the region for storing the image data in said work memory; a converting unit configured to store, in said work memory, one of a plurality of pieces of image data divided from the image data by said dividing unit, and convert a format of the image data stored in said work memory; a image file generating unit configured to generate one image file including image data obtained by said converting unit converting each piece of the plurality of pieces of image data; and an adding unit configured to add header information including positional information to each of the plurality of pieces of the divided image data; wherein said adding unit does not include the positional information in the header information of the image file when a device to which the image file generated by said image file generating unit is to be outputted does not require the positional information.