Patent ID: 6842270

Claim:
An image reading device which conveys an elongated image information support, on which a plurality of frame images are recorded and which is provided with a magnetic recording layer on which magnetic information is recorded, and reads image information of the respective image frames, the image reading device comprising: a line scanner which carries out prescanning in which the line scanner preliminarily reads the image information of the respective image frames, and which carries out fine scanning in which the line scanner reads the image information of the respective image frames at reading conditions for the respective image frames which are set on the basis of the image information for the respective image frames obtained by the prescanning; a magnetic information reading/writing section which reads the magnetic information of the magnetic recording layer at the time of the prescanning, and writes magnetic information at the time of the fine scanning; and a conveying device which conveys the image information support in a first direction at a constant speed along a conveying path at the time of the prescanning, and which conveys the image information support in a second direction opposite to the first direction along the conveying path at the time of the fine scanning, wherein the line scanner and the magnetic information reading/writing section are disposed along the conveying path at positions which are optimal positions for an arrangement of the line scanner and the magnetic information reading/writing section.