Abstract:
A printer for kiosks is disclosed that includes an anti-intrusion door that is movable between a normal closed position and an open position in which it respectively closes and opens a passage through which a printed document is guided, moving from the normal closed position to the open position by a thrust exerted by the exiting document and returning to the closed position through the effect of its weight after the printed document has been removed.

Description:
BACKGROUND OF THE INVENTION 
     The invention relates to a printer for kiosks, in particular for dispensing, through an outlet, tickets, receipts or printed slips. 
     Specifically, but not exclusively, the invention can be applied in a dispenser of tickets, receipts or printed slips located in a public place, for example for self-service kiosks (information, service or other types of kiosk), bank counters or instant tellers, parking meters or public transport payment terminals, access control systems, gaming machines, automatic dispensers in general, etc. 
     In particular the present invention refers to a printer for kiosks made in accordance with the preamble of the first claim. 
     Such a printer is known, for example from patent WO 2005/090087. 
     One of the drawbacks of the prior art is the risk of an undesired intrusion of objects inside the printer through the outlet of the printed document. This intrusion can be fraudulent or an act of vandalism but also accidental, for example because of a user of the kiosk who, through lack of attention, inserts an object (for example a banknote, a card or a form) into the wrong opening. 
     Another drawback is the risk of entry inside the printer of potentially harmful elements such as dust, rain, humidity, etc. 
     Another drawback is the risk that the thrust exerted by the document is not able to open the closure arrangement. 
     SUMMARY OF THE INVENTION 
     One object of the invention is to overcome one or more of the aforesaid drawbacks of the prior art. 
     One advantage is to make a printer for kiosks that is able to prevent an intrusion of objects through the outlet of the printed document. 
     One advantage is to make available a printer for kiosks that is able to dispense the printed document safely and reliably. 
     One advantage is to provide a printer for kiosks with a constructionally simple and cheap anti-intrusion system. 
     One advantage is to protect the inside of the printer from the entry of dust, rain, humidity or other undesired and potentially harmful elements. 
     Such objects and advantages, and still others, are achieved by the printer according to one or more of the claims set out below. 
     In one embodiment, the printer comprises a door that is movable between a normal closed position and an open position in which it respectively closes and opens a passage through which a document is guided (which is printed or to be printed), moving from the normal closed position to the open position through the effect of a thrust exerted by the document that advances and returning to the closed position through the effect of its weight after the document has been removed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention can be better understood and implemented with reference to the attached drawings that illustrate one embodiment thereof by way of non-limiting example. 
         FIG. 1  is a perspective view of one embodiment of a printer for kiosks according to the invention. 
         FIG. 2  is a vertical side view of the printer of  FIG. 1 . 
         FIG. 3  is section III-III of  FIG. 2 . 
         FIG. 4  shows an enlarged detail of  FIG. 3 . 
     
    
    
     DETAILED DESCRIPTION 
     With reference to the aforesaid figures, with  1  overall a printer for kiosks has been indicated that is for example usable in self-service kiosks, in bank counters or instant tellers, in parking meters, in access control systems, in gaming machines, in automatic dispensing machines in general. 
     The printer  1  comprises a printing arrangement for printing a document on a strip of material (for example paper) and for supplying the document downstream to an outlet zone  2 . The printing arrangement may comprise, for example, a printing head  3  (in particular of known type). The printing head  3  may comprise, for example, a thermal printing head (as in this specific case) or a printing head of other type. The (thermal) printing head  3  comprises an advancement roller  4  that advances the strip of material to the outlet zone  2 . It is possible to set up, as in this case, other advancement arrangement that collaborates with the (thermal) printing head  3 . In the specific case, on the advancement path of the strip of material (for example downstream of the printing head  3 ) there is arranged a pair of print supporting material (paper) conveying rollers  5 . 
     The printer  1  comprises at the outlet zone  2  of the printed document an outlet  6 , for example in the form of an annular flange or protruding lip, through which the printed document is dispensed outside to be removed by a user. The outlet  6  has, in particular, an edge that surrounds (in particular all around) an outlet opening  7  of the document. The outlet  6  can have, in particular, an outlet opening  7  of narrow and elongated shape (for example arranged horizontally as in this case). 
     The printer  1  may comprise, as in the embodiment illustrated here, a separating arrangement, in particular arranged downstream of the printing head  3 , to separate the printed document from the rest of the strip. Such a separating arrangement may comprise, for example, a movable blade or cutter  8  driven by a motor (controlled by a programmable electronic controller that may also control the other actuators of the printer  1 ). In other embodiments it is possible to provide a separating or cutting arrangement that comprise a stationary blade. 
     The printer  1  comprises a shutting arrangement, or a door arrangement, arranged near the outlet zone  2 . The shutting arrangement may comprise, for example, a door  9  (or hatch, shutter, or rolling door) that may be movable with the possibility of taking on a normal closed position (see  FIG. 3 or 4 ) in which it closes a passage  10  arranged along the path of the document through which the document is guided and made to advance. As will be explained better below, the shutting arrangement is of monodirectional type, i.e. is shaped and arranged in such a manner as to obstruct the passage in one direction (to the inside of the printer) and to enable the passage in the opposite direction (outlet direction to the outside of the printer). 
     The passage  10  may be defined, as in this embodiment, by a guide portion, in particular in the form of an annular flange or protruding lip with a section converging forwards, arranged for guiding the advancement of the printing support. 
     The door  9  may further assume an open position (dashed in  FIG. 4 ), for example a tilted position, in which it enables the printed document to exit via an opening arranged at an advanced end of the passage  10 . 
     The door  9  may be shaped and arranged in such a manner as to be able to be moved to an open position through the effect of a thrust exerted by the printed document that exits through the passage  10  that is normally closed by the door. 
     In particular, the door  9  may be rotatable around a hinge axis  11  and have a free end  12  that is far from the hinge axis  11 . 
     This free end  12  may be arranged on the advancement path of the exiting printed document or near this path. 
     The door  9  may be shaped and arranged in such a manner as to be openable around the hinge axis  11  with an opening rotation R (clockwise with reference to  FIGS. 3 and 4 ) in which the free end  12  of the door is lifted and in such a manner as to be closable around the hinge axis  11  with a closing rotation (anticlockwise with reference to  FIGS. 3 and 4 ) in which the free end  12  is lowered. 
     The printer  1  may comprise, in particular, an abutting arrangement  13  having at least one abutting surface against which the door  9  may close in an abutting manner such that this abutting surface achieves a closing (rotation) stroke. This abutting arrangement  13  may comprise, for example, at least one abutting surface on a wall located at the advanced end of the passage  10  obstructed by the door  9 . 
     The tilting door  9  thus achieves one embodiment of the monodirectional shutting arrangement that is suitable for opening to enable the passage in the outlet direction from the inside of the printer to the outlet zone  2  (in particular leaving the passage free for the advancing print document) and remaining closed to prevent the passage in the opposite direction, i.e. from the outlet zone  2  to the inside of the printer. The tilting door  9  in fact enables the exit (through the passage  10 ) and does not permit the entrance, in particular because of abutting arrangement  13  that stops oscillation of the tilting door in one direction. 
     The free end  12  of the door may comprise at least one protrusion  14  arranged for abutting on the abutting arrangement  13 . In the specific case two or more protrusions  14  are arranged (for example protrusions in the shape of a rectangular or trapezium tooth) that are alongside and spaced apart from one another, each of which can abut on the abutting arrangement  13 . 
     The door  9  may be shaped and arranged in such a manner as to abut on the abutting arrangement  13 , shutting the outlet passage  10  at or near the normal closed position. 
     The abutting surface may be arranged, as in the specific embodiment, at (the rise of) a step situated (immediately) downstream of the advanced end of the output passage  10  obstructed by the door  9  in the closed position. 
     The outlet  6  may comprise, as in this case, a guiding and protecting lower wall  15  that bounds below the advancement path of the printed document in the outlet zone  2  (in particular downstream of the passage  10  that is obstructed by the closed door  9 ). The (lower) free end  12  of the door  9  may be arranged above the lower wall  15  and may have a lower margin that, in the normal closed position of the door  9 , is at least in part arranged very close or flush (without touching) the underlying lower wall  15 . 
     The printer  1  may comprise a guiding and protecting upper wall  16  that bounds the advancement path of the printed document in the outlet zone  2  above. The upper wall  16  may be (as in this case) at least partially arranged above the lower wall  15 . The lower and upper walls  15  and  16  may be extended (as in the embodiment illustrated here) beyond the door  9  (“beyond” must be understood with reference to the exit direction of the document). The outlet  6 , in particular the lower and upper walls  15  and  16 , protect at least in part the door  9  that is arranged at a certain distance from the outlet opening  7  that is the zone of actual interface with the user. 
     The door arrangement may be shaped and arranged so as to return to the normal closed position by the effect of its own weight, in particular after the printed document (that had caused the opening thereof) has been removed by the user or at least removed from the outlet zone  2 . 
     The door  9  may comprise, as in this case, an occluding element of narrow and elongated shape, in particular of plate shape, which closes the (narrow and elongated) outlet passage  10  of the printed document. The occluding element may be hinged (around the hinge axis  11 ) near a long side thereof. In particular, the door  9  may comprise an occluding element made of light metal material, for example aluminium and/or light alloy. 
     The occluding element may be connected to the hinge axis  11  by an arm element  17  arranged in such a manner that the occluding element is arranged in a more advance manner (with reference to the outlet direction of the document) than the hinge axis  11 . The arm element  17  is arranged, in particular, behind the occluding element and above the passage  10 . The occluding element may be arranged vertically in a normal closed position (see  FIGS. 3 and 4 ) and in a tilted position in the open position. 
     The arm element  17  may comprise, as in this case, two wings arranged on opposite sides of the occluding element and rotatably coupled with two respective pins (integral with the casing  19 ) on the hinge axis  11 . 
     The occluding element may be provided with a balance cantilever  18  which, in particular, protrudes forward (with reference to the advancement of the strip of material or of the printed document). The cantilever  18  may be arranged, for example, on the opposite side to the arm element  17 . The cantilever  18  promotes, owing to its weight and/or to its arrangement, correct and secure opening of the door arrangement by the printing material that pushes forwards and/or the correct and secure reclosing (by gravity) of the door arrangement (after the printing material that caused the opening has been removed). The cantilever  18  and the occluding element may be integrated together. 
     The printer  1  may comprise, in particular, a casing  19  (for example of box shape) to support and at least in part contain the various printer elements disclosed above. The casing  19  may have, in particular, an inlet  20  of the strip of material (paper), for example an inlet  20  arranged on a casing side opposite a casing side that bears the outlet zone  2  of the printed document. 
     The printer  1  may have sensors (of known type) connected to the controller, like, for example, a paper sensor  21  arranged upstream of the passage  10 . 
     The strip of material may be supplied in a known manner, for example from a roll, from a continuous module (“fan-fold” type) or with other supply systems. The supply arrangement supplying the strip of material may comprise, for example, a magazine of material (for example a roll) arranged outside the casing  19  and connectable to the latter (in particular to the inlet  20 ) in a known manner. 
     In the embodiment illustrated here the printer  1  has a (single) door  9  closing the passage  10  guiding the document. It is possible, in other embodiments that are not illustrated, to provide a printer having a door arrangement comprising two or more doors arranged for closing the passage through which the document exits, for example two or more doors arranged alongside one another. Such doors could be movable independently of one another and/or be hinged around the same hinge axis. 
     In use, the printer  1  prints a document (in particular it will also separate the document from the strip by means of the blade  8  or other appropriate cutting arrangement) and thus moves the document to the outlet zone. As the document advances it will proceed through the passage  10  meeting the door  9  (normally in the closed position) and continuing along its journey to the outlet opening  7  it will open the door  9 , pushing the door  9  forwards (with an opening rotation R). The document, also moved forwards by the supply arrangement of the printer (in particular by the pair of rollers  5 ), will thus come to protrude beyond the outlet opening  7 , where it can be removed by the user. When the document is removed from the outlet zone  2  (for example by the user or automatically by the printer if the document is not removed by the user after a certain time), the door  9  can return to the closed position. The return to the closed position may occur spontaneously through the effect of the weight of the door  9 . 
     The door  9 , arranged in a normal closed position to obstruct the exit passage  10  of the document, prevents the undesired entry of objects from the exterior (in particular from the outlet zone  2 ) to the inside of the printer through the passage  10 . The door  9  can protect the inside of the printer both against the attempt to introduce objects through the outlet  6  and against the entry of dust, rain, humidity or other undesired elements that could cause wear or damage.