Abstract: A bill processing machine according to the present invention includes a control portion that controls a pair of first and second sensor units. The control portion performs: a first process in which first and second reflected lights of one face of a bill are detected sequentially by first and second reflection sensors of the first sensor unit, respectively; a second process in which third and fourth reflected light of an other face of the bill are detected sequentially by first and second reflection sensors of the second sensor unit, respectively; and a third process in which first and second transmitted lights in one direction of the bill are detected by the first and second reflection sensors of the first sensor unit, respectively, and third and fourth transmitted lights in an other direction of the bill is detected by the first and second reflection sensor of the second sensor unit, respectively.

Abstract: A bill processing machine according to the present invention includes an element array portion and a light guiding member. The element array portion is arranged so as to face one side of a conveyance path of a bill, and includes a light receiving element group, a light emitting element and an other side light receiving element. The light receiving element group includes a plurality of light receiving elements, and an arrangement direction of the light receiving elements is perpendicular to a conveyance direction of a bill. The light emitting element is arranged on one side of the arrangement direction of the light receiving elements. The other side light receiving element is arranged on an other side of the arrangement direction of the light receiving elements. The light guiding member is arranged opposite to the element array portion with respect to the conveyance path so that the light guiding member and the element array portion sandwiches the conveyance path therebetween.

Abstract: A bill processing machine according to the present invention includes an element array portion and a light guiding member. The element array portion is arranged so as to face one side of a conveyance path of a bill, and includes a light receiving element group, a light emitting element and an other side light receiving element. The light receiving element group includes a plurality of light receiving elements, and an arrangement direction of the light receiving elements is perpendicular to a conveyance direction of a bill. The light emitting element is arranged on one side of the arrangement direction of the light receiving elements. The other side light receiving element is arranged on an other side of the arrangement direction of the light receiving elements. The light guiding member is arranged opposite to the element array portion with respect to the conveyance path so that the light guiding member and the element array portion sandwiches the conveyance path therebetween.

Abstract: A bill processing machine according to the present invention includes a control portion that controls a pair of first and second sensor units. The control portion performs: a first process in which first and second reflected lights of one face of a bill are detected sequentially by first and second reflection sensors of the first sensor unit, respectively; a second process in which third and fourth reflected light of an other face of the bill are detected sequentially by first and second reflection sensors of the second sensor unit, respectively; and a third process in which first and second transmitted lights in one direction of the bill are detected by the first and second reflection sensors of the first sensor unit, respectively, and third and fourth transmitted lights in an other direction of the bill is detected by the first and second reflection sensor of the second sensor unit, respectively.