PURPOSE: To provide a paper sheets conveyor mechanism that is able to prevent a paper jam from occurring by way of truing up the position of paper sheets in addition to removal of any foreign matter getting mized in the paper sheets.

CONSTITUTION: Each of conveyor rollers 7', 7 and so on of a paper sheets conveyor mechanism 1 consists of a roller body 17, a projection 19, a flange part 21, a roller shaft 23 and a pulley 25. Four sets of this projection 19 (as two-in-a-set) consisting of gum are installed in the roller 7. In addition, the flange part, 21 is installed almost in an end of this roller 17. This flange part 21 conduces to prevention against any contamination due to a fact that paper sheets 99 are held between rollers. This conveyor roller 7 is rotated and driven whenever a belt 29 to be stretched across the pulley 25 is driven with the roller shaft 23 extending over the whole width of this roller 7 as the pivot.