Patent ID: 6335805
Filing Date: 2002-01-01
Classification: H04N

Abstract:
An image reading apparatus comprising:a plurality of line sensors for simultaneously reading images in different positions of a document and outputting respective image data; scanning means for making said plurality of line sensors scan the document; reading mode setting means for, when performing image reading with a same resolution, selectively setting a first mode and a second mode, wherein said first mode is a high image quality mode which provides an image quality better than that in the second mode, and said second mode is a high-speed reading mode which provides a reading speed higher than that in the first mode; and control means for controlling said scanning means based on the reading mode set by the reading mode setting means, wherein said control means controls said scanning means such that: in said first mode, said plurality of line sensors scan the document such that an identical part of the document is read a plurality of times, image data obtained by reading the identical part the plurality of times being synthesized when output; and in said second mode, said plurality of line sensors scan the document such that each of different parts of the document is read only once, and not a plurality of times.