Patent ID: 6621602
Filing Date: 2003-09-16
Classification: H04N

Abstract:
An image reading device which transports an elongated image information carrier on which a plurality of image frames are recorded and which is provided with a magnetic recording layer on which is recorded magnetic information, and which reads image information of each image frame, comprising:a linear scanner which performs a prescan for preliminarily reading image information of each image frame and which performs a fine scan for reading image information of each image frame under reading condition set on the basis of image information obtained in the prescan; a magnetic information reading and writing section which reads magnetic information on the magnetic recording layer during the prescan and writes magnetic information during the fine scan; and transporting means which transports the image information carrier during the prescan along a transporting path at a constant speed and which, for each image frame, transports the image information carrier during the fine scan along the transporting path at a speed set for each image frame in accordance with the reading condition and transports the image information carrier in a reverse direction of a transporting direction of the fine scan by a predetermined amount, wherein the writing of the magnetic information of each image frame is performed after the transporting speed of the image information carrier has converged to within a predetermined range with regard to the transporting speed for fine scanning set for each image frame.