Abstract:
A media cassette ( 10 ) for a self-service terminal (SST) comprises a body ( 20 ) for receiving media to be dispensed in the form of a bundle of media ( 12 ) having end faces and side faces. At least one movable guide member ( 16, 17, 18, 19 ) is provided for locating the media within the body ( 20 ) and for engaging a respective side face of the media bundle ( 12 ). The guide member ( 16, 17, 18, 19 ) is urged towards the respective side face of the media bundle ( 12 ).

Description:
BACKGROUND OF THE INVENTION 
     This invention relates to a self-service terminal (SST), such as an automated teller machine (ATM), and in particular to media containers,or cassettes as provided in such SSTs and which are used to store and transport media to be dispensed from SSTs. 
     Self-service terminals (SSTs), particularly automated teller machines (ATMs), are often used to dispense valuable media, such as banknotes. Conventionally, banknotes of different denominations are stored within an ATM in respective currency cassettes, from which notes are retrieved or “picked” as required for dispensing. The cassettes are filled at a secure central location and then distributed and fitted in the ATMs by authorized personnel. Empty and partially filled cassettes are retrieved from the ATMs and returned to the secure central location for auditing and refilling. 
     A typical currency cassette will store a bundle or stack of notes up to 300 mm long. A sprung pusher plate engaging an end face of the bundle urges the notes towards a roller door at one end of the cassette, the door being opened when the cassette is pushed into position in an ATM by engagement with a pair of locating prongs. The note bundle rests on tracks provided in a cassette body and is located within the body by various guides: the cassette body includes “width” restraining guides for locating the sides of the bundle, and the removable cassette lid includes “height” restraining guides for locating the upper face of the bundle. Cassettes tend to be produced in a limited number of standard sizes, based on a selected nominal currency, typically US dollar bills. Accordingly, to accommodate notes of other denominations, it is necessary that the guides are adjustable, and cassettes are therefore provided with adjustable guide mountings which may be set to suit a particular currency denomination. ATM suppliers will normally provide currency cassettes to their customers together with tables indicating the correct settings for the guide mountings for particular currencies and denominations; the customers will set up the cassettes in accordance with their own particular requirements, guided by the tables. The correct adjustment and fitting of the guides requires a degree of skill and dexterity and it is not uncommon for guides to be fitted incorrectly, which will affect the operation of ATMs fitted with the cassettes. For example, if the guides provide insufficient clearance, the cassette will be difficult to load with notes and notes may stick or jam in the cassette. Conversely, if the guides provide too much clearance, the notes may move around within the cassette during handling and transport to such an extent that the integrity of the note bundle may be lost and notes will not dispense correctly. 
     A further difficulty occurs in cassettes which are “overfilled”, that is an operator has placed too many notes in a cassette, with the result that the notes are packed too tightly to dispense properly. 
     These problems will tend not to be apparent on visual inspection of a filled currency cassette, and as cassettes are sealed for security reasons following filling any problems will only become apparent after the currency cassette has been inserted in an ATM and the machine has attempted to pick notes from the cassette. In many cases the resulting difficulties will result in the ATM closing down, and require a service engineer to be called out. Security requirements are often such that any “faulty” cassettes have to be returned to a central secure location for opening and checking, such that there may be a considerable delay in identifying the source of the fault and returning the ATM to service. 
     SUMMARY OF THE INVENTION 
     It is among the objectives of embodiments of the various aspects of this invention to provide self-service terminals (SSTs) and currency cassettes which obviate and mitigate at least some of these difficulties. 
     According to one aspect of the present invention there is provided a media cassette for a self-service terminal (SST), the cassette comprising: a body for receiving media to be dispensed in the form of a bundle of media having end faces and side faces; at least one movable guide member for locating the media within the body and for engaging a respective side face of the media bundle; and means for urging the at least one guide member towards the respective side face of the media bundle. 
     According to another aspect of the present invention there is provided a method of locating media in a cassette for storing media to be dispensed from a self-service terminal (SST), the method comprising: positioning a bundle of media in a body for receiving media to be dispensed; and urging at least one movable guide member towards a respective side face of the media bundle to locate the bundle within the body. 
     These aspects of the present invention allows cassettes to be provided to accommodate media of different dimensions, without requiring the guide members to be specifically set for media of a particular size. Accordingly, in the case of currency cassettes for automated teller machines (ATMs), ATM suppliers may supply a single form of currency cassette which will accommodate a range of currencies and denominations without requiring the guides to be specifically set. 
     Preferably, the cassette includes width guides for engaging the sides of the media bundle, that is the guides are intended to engage the side edges of the media. Only one of the guides may be movable, however it is preferred that the width guides are coupled or otherwise operatively associated such that a transverse movement of one guide produces a corresponding movement of the other guide, thus facilitating centralizing of a bundle of media in the cassette body. The guides may be coupled mechanically via a lever or gear system, or may be associated electronically, for example by appropriate guide position sensors, comparators and guide moving motors. 
     Preferably also, the cassette includes a height guide for engaging an upper face of the media bundle, that is the guide is intended to engage the upper edges of the media. The height guide may be mounted to a lid or cover for the cassette body. 
     Preferably also, the at least one guide is selectively lockable in position. This may be useful during transportation and handling of the cassette, when movement of the guide might permit undesirable movement of the media. The guide may be manually lockable or may be automatically lockable on, for example, fitting a lid on the cassette body or removing the cassette body from a filling jig or station. The automatic locking may be achieved by mechanical interaction or by electrical or electronic means, for example by operation of a solenoid to actuate a lock or key. 
     Preferably also, the at least one guide is selectively retractable to provide a working clearance to facilitate media dispensing; it may be desirable to have little or no clearance between the guide and the media bundle during one or more of filling, handling and transport of the cassette, however when dispensing it is desirable to provide clearance to permit substantially unrestrained movement of the bundle towards the pick end of the cassette. The clearance may be provided by a manual adjustment of the guide prior to placing the cassette in the SST, but is preferably provided automatically on insertion of the cassette into the SST. The clearance may be provided by a mechanical interaction between an element of the SST and the guide, or may be obtained by the insertion of the cassette in the SST closing or opening a switch or otherwise changing an electrical state in an appropriate device to energize or actuate a motor, actuate a solenoid or the like to retract the guide a selected distance. 
     The means for urging the at least one guide member towards the respective side face of the media bundle preferably incorporates one or more springs, typically a compression spring, but may incorporate some other form of means, such as a volume of resilient material, an arrangement of magnets, a motor, a solenoid, or a mass coupled to the guides such that gravity acting on the mass tends to urge the guide member in the desired direction. 
     According to a further aspect of the present invention there is provided a media cassette for a self-service terminal (SST), the cassette comprising: a body for receiving media to be dispensed in the form of a bundle of media; and at least one movable guide member for locating the media within the body and for engaging a respective side face of the media bundle, the at least one guide member being biased towards the respective side face of the media bundle. 
     According to a still further aspect of the present invention there is provided a media cassette for a self-service terminal (SST), the cassette comprising: a body for receiving media to be dispensed in the form of a bundle of media; and at least one movable guide member for locating the media within the body and for engaging a respective side face of the media bundle, the at least one guide member being biased towards the respective side face of the media bundle, and the at least one guide member being selectively lockable within the body. 
     According to another aspect of the invention there is provided a method of locating media in a cassette for storing media to be dispensed from a self-service terminal (SST), the method comprising: 
     positioning a bundle of media in a body for receiving media to be dispensed; 
     urging at least one movable guide member toward the media bundle to locate the bundle within the body; and then 
     locking the at least one movable guide member with respect to the body. 
     According to a yet further aspect of the present invention there is provided a media cassette for a self-service terminal (SST), the cassette comprising: a body for receiving media to be dispensed in the form of a bundle of media; and at least one movable guide member for locating the media within the body and for engaging the media bundle, the at least one guide member being biased towards the media bundle and into contact with the bundle, and the at least one guide member being selectively retractable to provide clearance between the guide member and the bundle. 
     According to another aspect of the invention there is provided a method of locating media in a cassette for storing media to be dispensed from a self-service terminal (SST), the method comprising: 
     positioning a bundle of media in a body for receiving media to be dispensed; 
     urging at least one movable guide member toward the media bundle to locate the bundle within the body; and then 
     locating the body in an SST and retracting the at least one movable guide relative to the bundle to provide clearance therebetween. 
     According to another aspect of the present invention there is provided a media cassette for a self-service terminal (SST), the cassette comprising: a body for receiving media to be dispensed and defining an area to receive a bundle of media; and a member mounted to the body and movable between a first position in which the member restricts the length of the media-receiving area to a first dimension during filling of the body, the first dimension corresponding to a predetermined maximum length of media bundle, and a second position in which the member permits the length of the media-receiving area to be extended to a greater second dimension and permits longitudinal expansion of a media bundle therein. 
     According to a still further aspect of the present invention there is provided a method of controlling the filling of a media cassette for a self-service terminal (SST), the method comprising the steps: 
     providing a body defining a media-receiving area; 
     locating a member in the body to restrict the length of the area to a predetermined first dimension corresponding to a predetermined maximum length of media bundle; 
     locating a bundle of media in said area; and 
     retracting the member to extend the length of the area to a larger second dimension and permitting longitudinal expansion of the media bundle therein. 
     These aspects of the invention are useful in preventing overfilling of the cassette, which may prevent media from being properly removed or picked from the cassette during a media-dispense operation. The initial location of the member prevents an operator from locating a bundle of media in the media-receiving area which is of greater dimension, that is a bundle which is “too long”, and contains more media than the cassette is intended to accommodate. The ability to retract the member allows a bundle of media which has been tightly packed into the area to expand and thus facilitate reliable picking or removal of media from the bundle. 
     Preferably, the retraction of the member occurs following or in conjunction with the closing of the cassette. The member may be retracted manually, or in response to an operator action, but is preferably retracted automatically on the cassette being inserted in an SST, or on a lid being placed on the cassette. Most preferably, the member is adapted to be retracted by interaction of the member with a prong or other member provided in the SST and which engages with the cassette on insertion of the cassette into the SST. Conveniently, the member may interact with the prong or prongs as provided in many existing SSTs and which are utilized to retract the roller door provided at one end of the cassette and which provides access to the media for the SST pick arrangement. 
     The invention also relates to an SST incorporating or adapted to receive such cassettes as described above with reference to the various aspects of the invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     These and other aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: 
     FIG. 1 is a diagrammatic sectional view of a currency cassette in accordance with an embodiment of one aspect of the present invention; 
     FIG. 2 is a plan view of an arrangement linking the width guides of the cassette of FIG. 1; 
     FIG. 3 is an enlarged sectional view on line  3 — 3  of FIG. 1; 
     FIG. 4 is a sectional view on line  4 — 4  of FIG. 3; 
     FIG. 5 is a diagrammatic sectional view of a currency cassette in accordance with an embodiment of a further aspect of the present invention; and 
     FIG. 6 is a plan view of a part of the currency cassette of FIG.  5 . 
    
    
     DETAILED DESCRIPTION 
     Reference is first made to FIG. 1 of the drawings, which is a diagrammatic sectional view of a currency cassette in accordance with an embodiment of one aspect of the present invention. The cassette is used in the storage and transport of banknotes between a secure central location and an automated teller machine (ATM), and once fitted within an ATM is arranged such that notes may be “picked” from the cassette  10  during dispense operations. 
     The banknotes are stored within the cassette in the form of a bundle  12 , with the lower side face of the bundle  12 , formed by the lower edges of the notes, supported by an appropriate track  14 . Typically, a spring-urged pusher plate (not shown) urges the bundle towards the open end of the cassette  10  from which notes are removed as required. 
     As illustrated in FIG. 1, the bundle  12  is located by two width guides  16 ,  17  and two height guides  18 ,  19 , as will be described. The width guides  16 ,  17  locate the side faces of the bundle, formed by the side edges of the banknotes, while the height guides  18 ,  19  locate the upper face of the bundle, formed by the upper edges of the banknotes. 
     The cassette  10  comprises an open-topped generally cuboid body  20  and a lid  22  which is securable to the body  20 . The body and lid  20 ,  22  may be formed of any suitable material, such as a polycarbonate or an aluminum alloy. The body provides mounting for the track  14  on which the bundle of notes  12  sits, and also provides the mounting for the width guides  16 ,  17 . 
     The width guides are mounted on respective vertical supports  24 ,  25 , and which supports are linked by pinned members  26 ,  27 ,  28  extending beneath the track  14 , and which members are also shown in plan view in FIG. 2 of the drawings. The central pinned member  27  is pivotally mounted to the base of the body  20 , and is further coupled to a spring  30  which tends to lift the pinned members  26 ,  27 ,  28 , and thus also the vertical supports  24 ,  25  and the width guides  16 ,  17 . Further, the spring  30  also tends to rotate the member  27  in direction A, and thus tends to urge the width guides  16 ,  17  inwardly, to centralize the note bundle  12  within the cassette body  20 . 
     The lower ends of the vertical supports  24 ,  25  define teeth for selectively co-operating with corresponding teeth provided on the upper surface of mirror image locking blocks  32 ,  33 , further details of the block  33  being illustrated in FIGS. 3 and 4 of the drawings. The block  33  engages transverse rails  34 ,  35  extending from the base of the body, such that the block  33  is restricted to move transversely of the cassette body  20 . However, the block  33  features a pivoting latch  36  which engages a slot  38  in the base of the body to lock the respective block relative to the body. The upper end of the latch  36  extends into a longitudinal channel  40  which is adapted to co-operate with a prong  42  (FIG. 3) provided on the SST into which the cassette  10  is to be fitted, such that as the cassette  10  is fitted in the SST the prong  42  passes through the channel  40  and releases the latch  36 . 
     It will be noted from FIG. 4 that the end portion of one of the side walls of the channel  44  is angled: on the prong  42  passing through the channel  40 , and engaging the side wall  44 , the block is pushed in the direction B as illustrated in FIG.  4 . Thus, on insertion of the cassette  10  into an SST, the block  33  is released and then pushed outwardly, against the action of a block return spring  46  (FIG.  1 ). 
     The height guides  18 ,  19  are in the form of blocks and are mounted via respective compression springs  50 ,  51  to the underside of the cassette lid  22 . Each guide  18 ,  19  defines an inclined slot  52 ,  53  for co-operating with a respective pin follower  54 ,  55  mounted on a guide lock  56 ,  57 . The slots  52 ,  53  are arranged such that movement of the guides  18 ,  19  towards the bundle  12  is accompanied by inward movement of the locks  56 ,  57  whereas outward movement of the locks  56 ,  57  causes the guides  18 ,  19  to be retracted, that is lifted away from the upper face of the bundle  12 . 
     An outer downwardly facing portion of each lock  56 ,  57  defines a toothed surface  58 ,  59  for selectively co-operating with a respective corresponding toothed surface  60 ,  61  provided on the upper ends of the width guide vertical supports  24 ,  25 . 
     To refill the cassette  10 , the lid  22  is removed, which allows the spring  30  to lift the pinned members  26 ,  27 ,  28  and the vertical supports  24 ,  25  such that the supports  24 ,  25  are lifted clear of the locking blocks  32 ,  33 . Thus, the width guides  16 ,  17  will tend to move inwardly towards one another. When an operator wishes to replace a bundle of notes in the cassette body  20 , the operator may push one of the width guides  16 ,  17  outwardly, which also results in the other width guide moving outwardly to the same extent. If a bundle of notes is then placed on the track  14 , and the width guide released, both width guides  16 ,  17  will move inwardly together to centralize the bundle  12  on the track  14 . This ensures that the bundle  12  is correctly positioned within the cassette body  20 . Once the cassette body  20  has been filled, the lid  22  is placed on the body  20 , and as the lid  22  is moved downwardly the height guides  18 ,  19  will engage the upper face of the note bundle  12  and be pushed upwardly against the action of the springs  50 ,  51 , this movement also causing the lock members  56 ,  57  to move inwardly. When the lid  22  is fully engaged with the body  20 , the toothed surfaces  58 ,  59  of the lock members  56 ,  57  engage the upper toothed surfaces  60 ,  61  of the width guide vertical supports  24 ,  25 . The contact between the lock members  56 ,  57  and the supports  24 ,  25  also causes the supports  24 ,  25  to move downwardly, against the action of the spring  30 , and into engagement of the respective locking blocks  32 ,  33 . As the locking blocks  32 ,  33  are latched to the base of the body  20 , this results in both the width guides  16 ,  17  and the height guides  18 ,  19  being locked in position, in contact with the sides and upper face of the note bundle  12 . Thus, as the filled cassette  10  is handled and transported, the integrity of the bundle  12  will be maintained, as very little if any movement of the bundle  12  will be permitted. 
     On inserting the filled cassette  10  into an appropriate SST, the cassette  10  will be slid into the SST such that the SST prongs  42  pass into the cassette body  20  and engage with the locking blocks  32 ,  33 . As described above, as the prongs pass through the respective blocks  32 ,  33  the latches  36  are released and the blocks  32 ,  33  pushed outwardly. This movement of the blocks  32 ,  33  produces corresponding movement of the supports  24 ,  25 , and thus moves the width guides  16 ,  17  away from the sides of the note bundles. Further, this movement is transferred from the supports  24 ,  25  to the lock members  56 ,  57  and, through the interaction of the pin followers  54 ,  55  with the slots  52 ,  53 , the height guides  18 ,  19  are lifted from the upper face of the note bundle  12 . The various guides are thus automatically retracted to provide the appropriate working clearance between the guides and the note bundle. 
     It will be evident to those of skill in the art that the above-described arrangement provides a currency cassette  10  with width and height guides which will automatically adjust to accommodate banknotes of a range of dimensions. Further, the ability to lock the guides facilitates safe transport and handling of the filled cassette. Of course, in the locked position the guides do not provide the desired working clearance between the guides and the note bundle  12 , and this is provided automatically on insertion of the cassette  10  into the SST, through the interaction between the SST prongs and the locking blocks  32 ,  33 . 
     Reference is now made to FIGS. 5 and 6 of the drawings, which are diagrammatic illustrations of a currency cassette  70  in accordance with a further aspect of the present invention. This aspect of the invention is intended to prevent or at least minimize the risk of over-filling of the cassette  70 . This may occur when an operator places too many notes in a currency cassette, with the result that the note bundle  72  is too tightly packed, and it is difficult to pick notes from the end of the bundle once the cassette has been installed in an SST. 
     The over-filling prevention arrangement includes a pair of pivoting arms  74 ,  75  which, when extended, as illustrated in FIGS. 5 and 6, restrict the length of the note bundle  72  which may be placed in the cassette  70 . The arms  74 ,  75  are located adjacent the end of the cassette  70  which is opened on insertion of the cassette  70  into an SST, and from which end the banknotes are picked from the note bundle  72 . Each arm  74 ,  75  defines a small diameter toothed wheel  76 ,  77  which co-operates with a respective corresponding larger diameter toothed wheel  78 ,  79 . Each larger toothed wheel  78 ,  79  engages a respective rack  80 ,  81  defined by a vertically extending rod  82 ,  83 . Accordingly, downward movement of the vertical rods  82 ,  83  will result in retraction of the arms  74 ,  75  to the positions shown in chain dotted outlines, where the arms  74 ,  75  are clear of the end of the note bundle  72 . The rods  82 ,  83  are mounted on respective compression springs  85 , which tend to lift the rods  82 ,  83  and thus move the arms  74 ,  75  to the extended position. 
     The cassette lid  84  is provided with a pair of extensions  86 ,  87  which, when the lid  84  is placed on the cassette body  88 , push the rods  82 ,  83  downwardly causing the arms  74 ,  75  to retract. 
     Thus, in use, when the cassette lid  84  is removed to allow refilling, the arms  74 ,  75  automatically assume the extended position, and define an end of the bundle receiving area of the cassette body  88 . Once the cassette body has been filled, and the lid  84  secured to the body  88 , the arms  74 ,  75  are retracted, allowing the bundle end face  90   a  to move a predetermined distance, for example 10 mm, forward to  90   b , and ensuring that the notes in the bundle  72  are not too tightly packed to prevent picking of notes from the end of the bundle. 
     It will be apparent to those of skill in the art that the above-described embodiments are merely exemplary of the aspects of the invention, and that various modifications and improvements may be made thereto without departing from the scope of the invention.