DE1524627B2 - DEVICE FOR AUTOMATIC CHECKING AND PAYING OF BANKNOTES - Google Patents

Description

The main application relates to a device for the automatic checking and counting of banknotes with a transport device and counting device for banknotes, with detector systems that scan the banknotes and with one downstream of the detector systems and delivered by them Error signals time-delayed controlled removal device to sort out defective banknotes, whereby when checking freshly printed banknotes they are checked for the presence of soiling (markings) be checked by means of a first detection system, one and the other side of the Banknote scans and in the presence of contamination (marking) by means of an error signal actuates the removal device, the banknotes for centering errors of the print image be checked by means of a photoelectric, second detector system, which is on both sides of the Banknote with one detector each, the bright banknote edge along the one banknote edge at a reference measuring point and with two detectors each the hot banknote edge along the neighboring one Banknote edge scans at two different reference measuring points, the course of the at Passing the three reference measuring points as a function of the reflected brightness emitted by the detectors electrical voltage is used to form the actual value of the corresponding margin width, which is compared with a target value, with the presence of a centering error by means of a Error signal the removal device is actuated, and wherein the transport device not removed Banknotes to a known automatic bundling, banding and Packing machine transported.

The present invention is based on the object of a particularly expediently designed light-optical detector system for the determination of centering errors in the printed image of the banknotes to accomplish.

Based on a device of the type described in the main application is the Invention for solving this problem, characterized in that the second detector system at least the detector that crosses the edge oriented in the direction of transport of the banknote Scanning the transport direction, a fixed bundle of light-conducting plastic fibers parallel to the edge has, on whose light input surfaces the ir certain distance, yom -ki transport direction front Bank note edge provided reference measuring element when passing this reference measuring point through the Scanning area of the detector is projected briefly as a measuring section, and that the length of this projected Measurement path through the number of individual exposed plastic noses lying next to one another is represented and compared with the target value.

In this way, the width becomes dei directly bright banknote edge to determine Zen tration errors on a specific reference measuring element measured, and not, as in the execution example after the main application, the duration of the Ab scanning beam required to sweep the measuring section at de reference measuring point. So you can especially on a detector with an oscillating scanning beam to measure the transport direction: dispense with oriented banknote edge.

The removal device controlled by the two detector systems preferably has an ent

Pick-up roller on which, in the presence of an error signal, a bank note identified as defective is transmitted. Through this design of the removal device it is achieved that one as incorrectly identified banknote without a sudden change in direction or speed the conveying flow of the banknotes can be removed by the removal roller only for takeover a faulty bank note with the moving bank note carrier in the transport device, in particular with a transport roller of the transport device, cooperates, but otherwise from moving carrier of the transport device is lifted. For sorting out defective banknotes The bank note is therefore not out of the conveying flow, for example transversely to the normal transport direction Mechanism pushing out of the flow is required.

The invention is explained in more detail with reference to the drawing using an exemplary embodiment. It shows

Fig. 1 shows the block diagram of a device according to the invention and

Fig. 2 is a schematic view of a bank note edge scanning detector with a Bundle of light-conducting plastic fibers works.

The ones leaving the printing machine and containing a certain number of banknote prints Sheets that do not yet have banknote numbering * ~, are inspected by a tester for color misprints or soiling. Misprints are identified by a colored marking. The marking material to be used aligns the type of detection system that responds to these markings. With light-optical detectors a dark-colored marking will be used, but the marking can also be with a magnetic or electrically conductive paint can be applied if the detector system in question is responsive to the magnetic or electrical properties of that paint.

The sheets checked in this way and possibly provided with markings are transferred to an automatic one Cutting machine 100. The individually cut bank notes are placed in a magazine 101 stacked and arrive at a first roller 50 via a first counting device 102.

As shown schematically in Fig. 1, there is the transport device on which the banknotes be moved continuously and in an adjusted position during the automatic test, out of the rollers 50, 51 and 53.

Is when passing the first roller 50 a, α, and outwardly facing side of the banknotes by the detector systems 104 105, on passing through the second Walze51, which takes over the banknotes under changing the outwardly facing banknote side, the other side of the individual scores of the Detector systems 104 b and 106 scanned. The detectors in the systems 104 α and 104 b are responsive to the eventual color marking a note, while the detectors of the systems 105 and 106 check the centering of the banknote image with respect to the edge in the manner described in the parent patent application manner.

For this purpose, three points of the bright bank note edge, referred to below as reference measuring points, must be scanned at these points to measure the width of the bright bank note edge, two of these reference measuring points with measuring sections preferably on a broad side edge A and the third reference measuring point with a measuring section on a narrow side edge B. of the banknote. The exact centering of the colored print image of a certain banknote in relation to its white note edge is guaranteed if all measuring sections have predetermined nominal values or only very small ones at the three reference measuring points.

ίο still have tolerances that are considered permissible. If the bank notes move parallel to their narrow sides during their transport, then will for measuring the measuring sections at the first two reference measuring points on a broad side edge two uses fixed light-optical detectors, under which the banknote is exactly in the direction of the Hikes through the measuring sections at the reference measuring points. The length of the maximum reflection that occurs at Illumination of the banknote generated by the area of the bright note edge and by the detectors is detected, is then a measure of the actual width of the measuring sections at the first two reference measuring points. With a given transport speed of the banknotes, the duration is of course that mentioned maximum reflection directly of the length of a measuring section and thus the width of the bright banknote

^ randes proportional.

When measuring the width of the bright bank note edge 40 at the reference measuring point b, which is located on a narrow side edge B of the bank note and is therefore oriented transversely to the transport direction F of the bank note, it must be ensured that the measurement is practically only carried out momentarily at the point in time at which the measuring section at the reference measuring point b passes the area of the third detector 61. In the device according to the main application, this was achieved with the aid of a scanning beam oscillating rapidly in the direction of the measurement section at the reference point b , with only a single scanning phase being masked out as the measurement interval after a measurement signal was triggered. According to the invention, such an oscillating detector unit, as described in more detail with reference to FIG. 2, is replaced by a special stationary detector 61.

If a misprint is reported by any of the detector systems, then there is a time delay via a unit 109 according to FIG. 1 a removal device 107 to which the roller 52 also belongs, is actuated, which ensures that the one having a misprint The banknote is taken over by the roller 52. That can happen, for example, that this Roller 52 is briefly brought into contact with roller 51 and the misprint by means of grippers from the roller 51 takes over. All flawless banknotes, on the other hand, initially remain on the Roller 51 and are only taken over by roller 53. The ones attached to the transport rollers Arrows illustrate the direction of transport of the banknotes.

The rejected misprints get from the roller 52 into a counting device 121 and are then collected in a magazine 108.
All sound bank notes are removed from the roller 53, also pass through a counting device 122 and are then temporarily stored in an intermediate magazine 123. The banknotes then arrive from the intermediate magazine

5 6

zein in a numbering printing unit 124, the image projected after the fall areas of the plastic fibers 62 and the printing of the numbering to control the measuring section is denoted by b ' ,
counted once more by a counter 112 and then in an electronic comparison system 63 in the device designated 120 it is further determined whether the number of plastic fibers 62 exposed during the short-term, in which the notes are bundled, with timely measurement Derolen provided, labeled, counted again corresponds to the specified target value. If this is not the case and is to be packaged, as is the case in the main application, a is described via the unit 109 according to FIG. 1. Error signal to the removal device 107 for

On the roller 50 there is also a removal of the incorrect pressure, not shown, by means of the roller 52

Mechanically or optically working thickness measuring units supplied.

Direction is provided, which controls that only the measurement signal for scanning the reference measurement is a single bank note in each case and not, for example, place b , as in the main patent application two or more banknotes lying one on top of the other, written with a corresponding time delay for each banknote that is checked on the roller transport system then triggered when the broadside. 15 edge Λ of the banknote a certain position relative

In Fig. 2, a detector is schematically passed after the detector system. Appropriately

Invention for scanning the bank note edge 40 is used to trigger the measurement signal

and thus to check the correct centering. One of the other detectors responding, which

posed. In this exemplary embodiment, the reference measuring points on the front broad side edge A are indicated

assume that this detector is used to scan the 20 of the bill. Since the transport speed

Measuring section at the reference measuring point b , which is known to the durance of the banknotes, the time delay can

legal width of the narrow side edge B delay for triggering the measuring phase of the detector

allowed to determine the banknote. This narrow 61 can easily be chosen in such a way that the

seitenrandß thus extends parallel to the trans measurement only at the moment when the

port direction F of the banknotes, while the reference 25 measuring section at the reference measuring point b is the preferred

measuring point b has a measuring section, the vertically linear selected detector area of the

is directed towards this. The other two detectors, detector 61 happened

for scanning the mentioned at ^ other By the described detector is therefore to the

Reference measuring points on the broad side edge A, the measuring time only shows the exact number of

Serving banknotes are not shown. 30 reaching through the reflection of light on the white

The colored banknote imprint 41 extends banknote edge of exposed plastic asern fixed to the boundary 42. The detector 61 is set up in such a way, regardless of where the exposed is located, that directly the actual length of the rich of plastic fibers within the entire measuring distance at the reference measuring point b, i.e. the width of the bundle is located. So it does not matter whether the edge of the note at the reference measuring point b, measured 35, the bank note is lowered somewhat relative to the detector system. When the bank note is illuminated, the area shifted to the right to the transport direction corresponds to the area of maximum light reflection passed through the detector on the bright bank note. If, for example, in the representation of the note edge 40 - compared with the lower Re- according to FIG. 2, the bank note were to be inflected somewhat further to the right on the darker, colored bank note imprint, then the projected image b 'would be the measuring 41 or on the dark surface the transport path at the reference measuring point b on the light roller next to the bank note - the length of the measuring surfaces of the plastic fibers 62 likewise the shipping path at the reference measuring point b. ben, the number of plastic fibers exposed

In order to keep the area of maximum light reflection, however, it would remain unchanged.

represent, the detector 61 is with a bundle of the number of each exposed plastic fibers

Light-conducting plastic fibers 62, so-called »fiber 45, can be determined by the fact that each individual

optics «, whose fibers are a small, individual light-optical detector

serving end faces on JFig. 2 is assigned schematically, so that in the comparison system 63

are interpreted. On this multitude of individual the number of indi-

Light incidence surfaces of the individual fibers become the virtual detectors with a set target value

Measurement section on the bank note edge at the reference 50 is compared.

measuring point b projected by means of a lens 60, so that detectors of the described with reference to FIG

So the number of exposed by reflection, type can of course also be used for direct

adjacent individual plastic fibers 62 scanning of the lengths of the measuring sections on others

an exact measure for the width of the banknote edge reference measuring points in the direction of the transport movement

is at the reference measuring point b . That is used to illuminate the banknotes.

1 sheet of drawings

Claims (2)

Patent claims: 1. Device for the automatic checking and counting of banknotes with a transport device and counting device for banknotes, with the banknotes scanning detector systems and with a removal device connected after the detector systems and controlled with a time delay by these outputted error signals for the separation of defective banknotes, these being checked for freshly printed banknotes be checked for the presence of soiling (markings) by means of a first detector system, which scans one and the other side of the banknote and, in the presence of soiling (marking), actuates the removal device by means of an error signal, the banknotes for centering errors of the printed image by means of a photoelectric, second detector system are checked, which on both sides of the banknote with one detector each, the bright banknote edge along the one banknote edge at a reference measuring point and with two detectors en the bright banknote edge along the adjacent banknote edge at two different reference measuring points ajjtastet ^ whereby the course of the electrical voltage emitted by the detectors as a function of the reflected brightness when passing the three reference measuring points serves to form the actual value of the corresponding edge width, which is used with a target Value is compared, with the presence of a centering error by means of an error signal, the removal device is actuated, and the transport device transports the banknotes not removed to an automatic bundling, banding and packaging machine known per se, according to main patent application P 14 99514.3-53, thereby characterized in that in the second detector system at least that detector (61) which scans the edge (40) oriented in the transport direction of the banknote transversely to the transport direction (F) is a stationary bundle of light-conducting plastic parallel to the edge (40) asern (62), on whose light input surfaces the reference measuring point ( b) provided at a certain distance from the front banknote edge in the transport direction is projected briefly as a measuring section when this reference measuring point passes through the scanning area of the detector (61), and that the length of this projected measuring section through the Number of individual, juxtaposed exposed plastic fibers (62) is represented and compared with the target value. 2. Apparatus according to claim 1, characterized in that the controlled by the two detector systems removal device a removal roller (52) belongs to which, in the presence of an error signal, one is deemed to be defective identified banknote is transferred.