Patent ID: 7236275

Claim:
A method of reading images in an image reading apparatus capable of selectively executing a first reading method in which a document is read while the document is transported in a state in which a reader is fixed at a predetermined location, and a second reading method in which a document is read while the reader is moved in a predetermined direction in a state in which the document is held fixed, said apparatus having a first holding member for holding a document at the predetermined location for implementation of the first reading method, and a second holding member, which has a spectral transmittance different from that of said first holding member, for holding a document for implementation of the second reading method, said method comprising: a determination step of determining whether the first or second reading method is executed; a reading step of reading a document by the reader; an image processing step of executing processing of an image signal obtained at said reading step; and a coefficient setting step of setting coefficients, which are used in at least said reading step or said image processing step, in accordance with the first or second reading method; wherein processing is executed at said reading step and said image processing step using the coefficients set at said coefficient setting step so as to compensate for the difference between the spectral transmittances of said first and second holding members.