the chains 10 through arms 7 having gripping device mounting portions 50 and thus movable in the directions indicated by arrows e and e 39 following movement of the chains 10 in a loop the sprockets 2 2 and 2 2 are connected in respective pairs by shafts 6 and 6 so as to correspond to the chains 10 at both sides with one of said sprockets 2 being connected to a chain driving motor 40 moreover each of the shafts 6 and 6 is provided with an inversion assisting roller 27 for serving as a guide member during the turning over of the sheet p the sheet transport section having the construction as described above is provided to be located above the platen glass 80 of the image processing apparatus 15 as shown in fig1 the sheet feeding arrangement according to the present invention further includes the sheet pressing device 75 movably disposed for vertical movement by a driving device not shown in directions as indicated by arrows a in fig1 the sheet pressing device positively depresses the sheet p fed up to the predetermined image processing position by the sheet transport section referred to above onto the platen glass 80 and also the sheet discharge device constituted by the sheet discharge rollers 85 and 91 for discharging the sheets p completed for processing onto the sheet discharge tray 95 etc the functioning of the sheet feeding arrangement as described so far will be explained hereinafter with reference to fig3 a through 3 f in which numeral 30 denotes an air suction type double sheet feeding preventing device in the first place description is given with respect to the case where the sheet having images on both side faces surface.