IMAGE READER

PROBLEM TO BE SOLVED: To provide the image reader in which the number of memories is reduced through the common use of a line memory for line deviation correction and a buffer memory by utilizing the buffer memory effectively so as to avoid production of limit onto the number of pieces of image data to be processed depending on the resolution in the image reader conducting resolution conversion. SOLUTION: A buffer memory 30 is placed after a reduction circuit 29 and a magnification circuit 31 applies magnification processing to the data outputted from the buffer memory 30. Through the constitution above, the number of pieces of data received for each line to the buffer memory 30 is not increased and even when the number of pieces of data is increased by the magnification processing, no limit is caused in the data processing number and the buffer memory 30 is used for a line memory for line deviation correction in common.