holes or applies them a marking then the finisher conveys the finished sheets out to the discharge tray 37 it is also possible to not apply any finishing process on printed sheets and to store them in the discharge tray 37 directly from the image forming apparatus a the adhesive application means 55 is composed of the glue container 56 an applicator roll 57 rotatably installed in the container a drive motor mr that rotatingly drives the applicator roll 57 and a drive motor ms that reciprocates the glue container 56 along the sheet bundle fig3 a and 3b are conceptual views the glue container 56 is formed to be shorter in dimension than the bottom side edge of the sheet bundle the spine covered at the binding process s 1 this glue container 56 is supported on a guide rail 52 see fig3 a and 3b of the apparatus frame to be able to move along the bottom side edge s 1 of the sheet bundle s 1 along with the applicator roll 57 installed in that container the glue container 56 is connected to a timing belt 53 installed on the apparatus frame a drive motor ms is connected to the timing belt 53 the glue container 56 is shown in the drawings to be configured to move along the sheet bundle but it is also acceptable to configured to a tray shape that is longer than the length of the sheet bundle and to move only the applicator roll 57 in the left and right directions of the drawing note that the.