Apparatus for canceling sheet material

1. An apparatus for canceling, in particular destroying, sheet material, in particular bank notes, comprising:

at least one canceling means to which the sheet material to be canceled is fed, in which the fed sheet material is canceled, in particular destroyed, and from which the canceled sheet material is discharged;

at least one supervising means for monitoring the sheet material being discharged or having been discharged from said canceling means;

at least one monitoring means for monitoring the fed sheet material; and

at least one evaluation means for comparing the fed sheet material to the sheet material being discharged or having been discharged;

wherein at least one of the supervising means and the monitoring means includes a light barrier configured to monitor the fed sheet material and the discharged sheet material, respectively, by means of light establishing a light curtain.

2. The apparatus according to claim 1 , wherein at least one of said light barriers comprises a line-shaped light transmitter for emitting light beams extending in at least one plane.

3. The apparatus according to claim 1 , wherein the evaluation means utilizes signals from the supervising means and the monitoring means for comparing the fed sheet material to the sheet material being discharged or having been discharged.

4. The apparatus according to claim 2 , wherein at least one said light barrier comprises a line-shaped light receiver for detecting light beams extending in at least one plane.

5. The apparatus according to claim 4 , wherein the line-shaped light receiver is designed for integral detection of light.

6. The apparatus according to claim 4 , wherein the line-shaped light transmitter and the line-shaped light receiver are arranged such that light beams extend substantially parallel to the plane of the sheet material discharged from the canceling means.

7. The apparatus according to claim 6 , wherein the line-shaped light transmitter and the line-shaped light receiver are oriented substantially perpendicularly to the plane of the discharged sheet material.

8. The apparatus according to claim 4 , wherein the line-shaped light transmitter and the line-shaped light receiver are arranged such that the light beams are substantially perpendicular to the plane of the sheet material discharged from the canceling means.

9. The apparatus according to claim 8 , wherein the line-shaped light transmitter and the line-shaped light receiver are oriented substantially parallel to the plane of the sheet material discharged.

10. An apparatus for canceling, in particular destroying, sheet material, in particular bank notes, comprising:

at least one canceling means to which the sheet material to be canceled is fed, in which the fed sheet material is canceled, in particular destroyed, and from which the canceled sheet material is discharged;

at least one supervising means for monitoring the sheet material being discharged or having been discharged from said canceling means;

at least one monitoring means for monitoring the fed sheet material; and

at least one evaluation means for comparing the fed sheet material to the sheet material being discharged or having been discharged, said evaluation means configured to store information detected by at least one of the supervising means and the monitoring means,

wherein at least one of the supervising means and the monitoring means includes a light barrier configured to monitor the fed sheet material and the discharged sheet material, respectively, by means of light establishing a light curtain.

11. An apparatus for canceling, in particular destroying, sheet material, in particular bank notes, comprising:

at least one canceling means to which the sheet material to be canceled is fed, in which the fed sheet material is canceled, in particular destroyed, and from which the canceled sheet material is discharged;

at least one supervising means for monitoring the sheet material being discharged or having been discharged from said canceling means;

at least one monitoring means for monitoring the fed sheet material; and

at least one evaluation means for comparing the fed sheet material to the sheet material being discharged or having been discharged, wherein the evaluation means is configured to time correlate signals between two or more of the at least one supervising means and at least one monitoring means,

wherein at least one of the supervising means and the monitoring means includes a light barrier configured to monitor the fed sheet material and the discharged sheet material, respectively, by means of light establishing a light curtain.

12. An apparatus for canceling, in particular destroying, sheet material, in particular bank notes, comprising:

at least one canceling means to which the sheet material to be canceled is fed, in which the fed sheet material is canceled, in particular destroyed, and from which the canceled sheet material is discharged;

at least one supervising means for monitoring the sheet material being discharged or having been discharged from said canceling means;

at least one monitoring means for monitoring the fed sheet material; and

at least one evaluation means for comparing the fed sheet material to the sheet material being discharged or having been discharged, wherein the evaluation means is configured to employ a graphic representation of signals from one or more of the at least one supervising means and at least one monitoring means,

wherein at least one of the supervising means and the monitoring means includes a light barrier configured to monitor the fed sheet material and the discharged sheet material, respectively, by means of light establishing a light curtain.