BANDFÖRDERVORRICHTUNG, DAMIT AUSGESTATTETE BILDERZEUGUNGSVORRICHTUNG UND EINSTELLVERFAHREN FÜR EIN SCHRÄGLAGENKONTROLLGERÄT IN EINER BANDFÖRDERVORRICHTUNG

A belt conveying device (1) includes: at least three rollers (11,12,13), about which an endless belt (14) to convey an object, is entrained, including meandering correction roller (12) having a rotation shaft (12b), whose one end is fixed and another end is oscillatably supported; a belt detection sensor (16) provided adjacent to a side edge of the belt, which detects presence of the belt; and a belt skew controller which controls an oscillator to oscillate the meandering correction roller according to a preset control value in a predetermined range to correct skew. The oscillator moves a rotation center of a movable edge of the meandering correction roller along a tangential line of an ellipse having elliptical focuses corresponding to rotation centers of rotation shafts of the two rollers (11,13), other than the meandering correction roller, positioned respectively in upstream and downstream of and adjacent to the meandering correction roller in a belt conveyance direction.