by a spot light source 61 and light reflected from this surface goes successively via a mirror 62 and a lens optical focussing element 63 to be led to and focussed at an image sensor 64 constituted by a charge coupled device ccd a screw 65 is operatively provided to lens 63 for adjusting the focus of lens 63 when screw 65 is turned it causes lens 63 to move along the optical axis image sensor 64 is mounted directly on a circuit board 66 so as to minimize noise effects mirror 62 is held by a holder 67 above mirror 62 a window 68 is provided to permit the passing light from document surface image sensor 64 comprises a plural bit 8 bit sensor elements first carriage 44 carrying image sensor 64 is moved in the x1 direction by drive mechanism 41 as a result a document image is read one line at a time each line being the width l of image sensor 64 bits as shown in fig1 as shown in fig1 reading starts at a front left position a and is effected going in the x1 direction up to a rear position b on completion of this reading there is a return to the front side and during this return movement sensor unit 40 is shifted a line reading width l to the right repetition of this action results in reading being effected up to a rear right position c as shown in fig3 and 12 line printer unit 34 is constituted by a recording head in the form of a line shaped thermal print head 70 and a cylindrical platen image receiving material supporting means 71 paper p is supported.