EP0788073B1 - Device for printing a printing support standing on an edge - Google Patents

Device for printing a printing support standing on an edge Download PDF

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Publication number
EP0788073B1
EP0788073B1 EP96250285A EP96250285A EP0788073B1 EP 0788073 B1 EP0788073 B1 EP 0788073B1 EP 96250285 A EP96250285 A EP 96250285A EP 96250285 A EP96250285 A EP 96250285A EP 0788073 B1 EP0788073 B1 EP 0788073B1
Authority
EP
European Patent Office
Prior art keywords
guide plate
arrangement according
conveyor belt
print medium
area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96250285A
Other languages
German (de)
French (fr)
Other versions
EP0788073A2 (en
EP0788073A3 (en
Inventor
Frank Geserich
Wolfgang Von Inten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Francotyp Postalia GmbH
Original Assignee
Francotyp Postalia GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1996105015 external-priority patent/DE19605015C1/en
Application filed by Francotyp Postalia GmbH filed Critical Francotyp Postalia GmbH
Publication of EP0788073A2 publication Critical patent/EP0788073A2/en
Publication of EP0788073A3 publication Critical patent/EP0788073A3/en
Application granted granted Critical
Publication of EP0788073B1 publication Critical patent/EP0788073B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/12Sheet holders, retainers, movable guides, or stationary guides specially adapted for small cards, envelopes, or the like, e.g. credit cards, cut visiting cards
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07BTICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00Franking apparatus
    • G07B17/00459Details relating to mailpieces in a franking system
    • G07B17/00467Transporting mailpieces

Definitions

  • the invention relates to a device for printing on a Edge of the print carrier, especially a letter in franking and / or addressing machines.
  • the print carrier on one The printing device is guided along and in one pass Franking or address printed.
  • the longitudinal guide plate is provided with a recess adapted to the conveyor belt and with a rectangular recess for the ink print head, over the diagonal of which the row of nozzles of the ink print head runs.
  • the conveyor belt, the length guide plate and the ink print head are arranged above the letter.
  • the resilient pressure rollers and a pressure roller resiliently mounted in the printing area are arranged under the letter.
  • the spring travel of the pressure rollers and the pressure plate corresponds to the maximum thickness of the letters, which can vary between 2 mm and 20 mm.
  • the spring force must be sufficient for the entire weight range of the letters - approximately 20 to 1000 g - and also for the letters to lie sufficiently flat in the area of the recess for the print head.
  • a franking machine compare US 5,025,386 in which the letters are conveyed upright, slightly inclined on a rotating conveyor belt. The letters rest on a guide block in which a print window is provided.
  • a thermal print head can be moved vertically and laterally, with which franking is printed on the letter.
  • the size of the print window must be adapted to the maximum length and width of the print image.
  • the individual letter is moved to the print window and then stopped and pressed against the guide plate or the print window by means of a pressure plate.
  • the pressure plate is driven by a motor via gear drives and a crank joint. This is a relatively large mechanical effort and the counterpressure forces to be applied for thermal printing are also large. After printing, the letter is released and transported on. It is evident that only low letter throughput rates can be achieved with this intermittent operation. The effort for the thermal print head adjustment is considerable.
  • the purpose of the invention is to simplify the transport of letters and an improvement in printing technology.
  • the invention has for its object a device for Transport of a print carrier standing on the edge to create the with simple construction, a precise guidance of the pressure carrier and a perfect print image guaranteed.
  • the guide plate in the area after the recess is either either continued as an open recess or set back by a depth which is greater than the largest to be expected by mechanical shaping - for example in the case of the plastic injection method using the casting mold - or by removal from the contact surface for the pressure carrier Curvature of the print medium in the printed area.
  • the clearance depth can be up to two millimeters in order to realize the staggered back offset.
  • the contact surface for the pressure carrier can be significantly reduced and thus also the friction.
  • the already mentioned system-free area for the printed part of the print carrier can be easily realized in that the slide rails are further apart than the print image width and are thicker than the largest curvature of the print carrier to be expected.
  • the realization of the structured part of the guide plate by means of a stainless metal insert has several advantages. This insert can then be punched and pressed out of a piece of sheet metal using a follow-on tool.
  • Stainless metal is very easy to polish, abrasion-resistant and has good sliding properties. This enables particularly good sliding conditions for the pressure elements made of plastic, if no pressure carrier is clamped between them and the guide plate. Finally, static charges can be dissipated well from the metal.
  • ink print head If franking and address printing are to be carried out in one pass, this is possible with an ink print head, but it requires a corresponding adjustment device for the ink print head. If an ink print head is permanently assigned to each recess or print function, then not only is the adjustment device not necessary, but it can also be printed in different colors, for example franking imprint red and address printing black.
  • the guide plate and the conveyor belt form an angle of 90 °. If you place the coordinates of an imaginary coordinate cross with x in the transport direction or longitudinal edge of the conveyor belt, z in the width direction of the conveyor belt and y in the vertical extension of the guide plate, it can be seen that the z and x position of the print carrier can be easily maintained by means of the pressure elements.
  • the inclination of the guide plate is chosen so that the print carrier moves into a secure contact position even without the action of the pressure elements, but the contact force in this position is nevertheless so low that the abrasion is negligible.
  • the arrangement of the pressure elements on the conveyor belt enables a variation of the letter transport. When the guide plate is designed as a flat plate, the letter is on the conveyor belt.
  • the guide plate When the guide plate is designed as an L-shaped angled plate, the letter stands on the short leg of the L-part.
  • the arrangement of the incremental encoder and the drive roller on one common axis and the use of a one tooth belt existing conveyor belt ensure an exact recording of the Transport route and a slip-free movement transmission.
  • the pressure elements can be used as additional assembly of the conveyor belt cannot be solved by means of Gluing, vulcanizing or welding connected to the latter his.
  • there is also a releasable positive fit Connection for example, by means of crowned pins on the underside of the Pressure elements and holes in the conveyor belt possible.
  • the pressure elements are then easy to snap, but still have one tight fit.
  • the U-shape appears to be particularly advantageous both for the clamping tab and for the pressure spring guided by means of the plunger.
  • the pressure element is designed as a spring-mounted plunger with a pressure plate that is partially provided with a friction lining, driving and sliding properties are particularly easy to control. Due to the resilient deflection of the pressure elements and the appropriate design of the transition to the frictional connection with the pressure carrier or with the guide plate by means of adapted deflection elements, a continuous adaptation to the different thicknesses of the pressure carriers and a continuous introduction of the pressure force are achieved.
  • the use of a suitable polyurethane material or rubber for the clamping tabs and for the U-shaped spring offers the advantage of greater wear resistance and noise reduction, and a large variation in spring properties is also possible.
  • the pressure element can be easily put together and on the Mount the toothed belt.
  • the protruding ends of the U-shaped Rubber springs serve as low-noise shock absorbers for the rear wall of the bracket.
  • Rubber instead of Rubber is also a suitable silicone rubber or polyurethane be used.
  • pressure elements 12 are releasably attached to a rotating conveyor belt.
  • the conveyor belt 1 is provided with holes 100, through which a counter plate 126 with pins 1261 protrudes, which are inserted into the associated openings of the pressure elements 12, not shown, see also FIGS. 9 and 10.
  • the conveyor belt 1 preferably consists of a toothed belt 10 and two toothed rollers 11.
  • the counter plate 126 is expediently arranged in a tooth gap and the toothed rollers 11 are adapted accordingly or provided with recesses, see also FIG. 9.
  • the driving toothed roller 11 is arranged in the vicinity of the printing area together with an incremental encoder 5 on an axis.
  • the incremental encoder 5 can be designed as a slotted disc which is illuminated by a photocell 6. A photodiode is not visible behind the slotted disc for evaluation.
  • the incremental encoder 5 interacts via an evaluation and control circuit with a sensor 7 for the letter start detection in order to trigger the printing at the right time.
  • deflection elements 8 are arranged in the entry and exit area of the letters. In this case in the form of a continuously cranked backdrop. However, it can also be simply outwardly curved strips, see FIGS. 4 to 6.
  • the deflection elements 8 serve in the entrance area to take back the pressure elements 12 so far that the thickest approved letter 3 easily reaches the conveyor belt 1.
  • the deflection elements 8 serve in the exit area to take back the pressure elements 12 so far that each transported letter 3 is released safely and can leave the conveyor belt 1 in the direction of a storage device.
  • the letters 3 stand upright on the conveyor belt 1 and are in contact with a guide plate 2 with the surface 32 to be printed under the action of the pressure elements 12.
  • the guide plate 2 is provided with parallel slide rails 23, 231 which extend in the transport direction x.
  • the guide plate 2 has a first recess 21 for an ink print head 4, which is at the height of a franking imprint to be applied.
  • a second, higher lying recess 22 is provided for the case when an address is also to be printed on the letter 3.
  • a second ink print head 4 is then permanently assigned for this recess 22, or a common, adjustable ink print head 4 is used for franking and address printing.
  • the nozzle plane of the ink print head 4 must always be arranged parallel to the guide plate 2 and the letter 3 must be guided past the nozzle plane with the smallest possible distance - less than 2 mm.
  • the slide rails 231 have a distance a from one another in the area 25 after the recess 21, 22, which is greater than the printed image width b.
  • the thickness d of the slide rails 231 is greater than the largest curvature w occurring in the print carrier 3 in the printed area.
  • the guide plate 2 is provided in the main system and printing area for the letter with an insert 20 which extends in the transport direction x.
  • the recesses 201, 202 for the ink print head 4 and an opening 206 for the sensor 7 are punched into the insert 20 and all other necessary structures are stamped, including the slide rails 203, see also FIG. 2b.
  • the insert 20 expediently consists of a piece of rustproof metal.
  • the slide rails 203 are formed above and below the recesses 201, 202 for the ink print head 4 continuously over the entire length of the insert 20.
  • the slide rails 203 have a distance a from one another in the region 205 after the recess 201, 202, which is greater than the printed image width b.
  • the area 204 in front of the recesses 201, 202, the nozzle plane 40 of the inkjet print head 4 and the area 205 thereafter are staggered behind one another. This prevents the letters from getting caught, prevents traffic jams and increases the security of letter transport. If suitable sheet metal is used for the production of the insert, the implementation is unproblematic.
  • the guide plate 2 is L-shaped, the letter 3 with an edge 31 on the short leg 27 of the L part of the guide plate 2 or slides along and on the long leg 26 or on the slide rails 23 located thereon is present.
  • both legs 26, 27 are arranged orthogonally to one another.
  • the short leg 27 is highly polished in the direction of transport. This would also apply generally to the guide plate 2 if no slide rails 23 are provided. Otherwise, the further design is analogous to that previously described.
  • the area of their attachment can be approximately in the middle of the Conveyor belt 1 or the one with the greatest distance to Guide plate 2 be.
  • the pressure elements 12 are designed as strip-shaped clamping tabs, which, standing transversely to the transport direction, are connected to the conveyor belt 1 with the end 1201 facing away from the guide plate 2 and standing on a longitudinal edge.
  • an inseparable fastening is preferred for this embodiment, which can be done by gluing or welding.
  • the clamping flap 12 is bent away against the transport direction by means of the deflection element 8 and continuously slides along the deflection element 8 to the side of the letter 3.
  • the strip-shaped clamping tab also transversely to the transport direction flat with that of the guide plate 2 opposite end 1201 to be connected to the conveyor belt 1.
  • the clamping tab slides from above with the aid of the deflection element 8 approach letter 3.
  • the clamping element 12 is an annular clamping tab executed upright with that of the guide plate 2 part 1201 facing away from the conveyor belt 1 is attached.
  • the pressure elements 12 according to 8 are designed as U-shaped clamping tabs.
  • the U-shaped Clamping tabs 12 are facing away from the guide plate 2 Legs 1203 upright across the transport direction on the Conveyor belt 1 attached.
  • the semicircular area of the clamping tabs 12 is with deflection against the direction of transport arranged upright on the conveyor belt 1.
  • All clamping tabs 12 described above consist of a rubber-elastic material, preferably a polyurethane material.
  • a pressure element 12 is designed as a spring-mounted bracket 121, the axis 123 of which is guided in a slide bearing 1251 transversely to the transport direction.
  • the sliding bearing 1251 is rigidly connected to a bearing base 125 which is fastened on the conveyor belt 1.
  • the axis 123 carries a pressure plate 1211 on the end face, which is partly covered with a friction lining 122 towards the guide plate 2 such that the same can only come into positive contact with a letter 3. If the letter 3 is missing, the pressure plate 1211 slides on the slide rail 23 or 203, that is to say the friction lining 122 is thinner than the thickness d of the slide rail 23, 203 or projects therefrom and is therefore exposed, see also FIG. 11.
  • a cover plate 1212 is attached to the rear thereof, which is supported on the rear wall 1252 of the bearing base 125 and is closed off by a rear wall 1213.
  • a bore 12111 is provided in the pressure plate 1211 and a bore 12131 is provided in the rear wall 1213. Both holes 12111, 12131 serve to receive the axis 123.
  • a U-shaped spring 124 is arranged between the pressure plate 1211 and the bearing base 125 in such a way that the bent part rests on the pressure plate 1211 and the free legs 1241 are held in the bearing base 125.
  • the spring 124 has in its central part 1240 a bore 12401 with which the spring 124 is pushed firmly onto the axis 123.
  • the free legs 1241 of the spring 124 are positively fastened in slot-shaped recesses 12521 of the rear wall 1252 of the bearing base 125.
  • the ends 12411 of the legs 1241 protrude somewhat beyond the rear wall 1252 and in this way form a shock-absorbing stop for the rear wall 1213 of the bracket 121
  • the spring 124 is preferably made of rubber. Good lifespan, spring and damping properties are achieved. Last but not least, this material is inexpensive.
  • the rear wall 1213 of the bracket 121 ends in an extension 12132, which can come into operative connection with the deflection elements 8.
  • the extension 12132 lies in the beginning area and in the end area of the conveyor belt 1 against the deflection part 81 and the deflection part 82 of the link 8, respectively, see FIGS. 1 and 11.
  • FIG. 11 shows the three characteristic positions that a pressure element 12 can assume.
  • the section below the cover plate 1212 of the bracket 121 is shown.
  • the pressure element 12 has just been released by the deflection part 81.
  • the letter 3 is clamped between the friction lining 122 and slide rails 23. There is no letter in the middle position.
  • the pressure plate 1211 lies against the slide rail 23 and the friction lining 122 is at a distance from the guide plate 2 and is therefore free.
  • the rear wall 1213 of the bracket 121 abuts the ends 12411 of the U-shaped spring 124.
  • the pressure element 12 is by the Deflection part 82 pulled away from the guide plate 2.
  • the feather 124 is pressed together and the rear wall 1213 lies with the extension 12132 on the deflection part 82, see also Fig. 10.
  • the pressure elements 12 are elastic full cylinders 120 executed between the jaws 1205 transverse to the direction of transport are clamped.
  • the jaws 1205 are across the Conveyor belt 1 attached.
  • Letter 3 is between face 1204 of the full cylinder 120 and the guide plate 2 clamped.
  • the jaws 1205 spread due to the curvature of the conveyor belt 1, see above that the solid cylinder 120 then loosely between the jaws 1205 lie and are easy to move.
  • the front deflection area of the conveyor belt 1 is surrounded by a cage 83, which on the one hand prevents the full cylinders 120 from falling out of the clamping jaws 1205 and on the other hand is designed as a deflection element 8.
  • the cage 83 surrounds the conveyor belt 1 from the turning point so tightly that the full cylinders 120 rest tightly between the conveyor belt 1 and the inner top wall 830 of the cage 83.
  • part of the inner top wall 830 has a tooth profile 8301, which runs obliquely in the direction of the guide plate 2 and diagonally with the transport direction.
  • an elastic counter-profile is embossed into the outer surface 1206 of the solid cylinder 120 and is turned out transversely to the direction of transport to the guide plate 2.
  • the frictional connection and tooth profile 8301 are dimensioned such that the full cylinder 120 only comes out so far that there is a small distance between the end face 1204 of the full cylinder 120 and the guide plate 2 and a thin letter 3 is just being grasped. In the case of thick letters 3, a slip effect occurs.
  • a cage 84 comprises the conveyor belt 1, which likewise prevents the full cylinders 120 from falling out of the clamping jaws 1205 and, on the other hand, is designed as a deflection element.
  • the inner side wall 841 adjacent to the guide plate 2 is guided obliquely outwards.
  • the loose full cylinders 120 slide with their end face 1204 along the inner side wall 841 and are pushed out so far that the thickest approved letter 3 fits comfortably between the end face 1204 and the guide plate 2 and is thus released.
  • the inner cover wall 840 of the cage 84 is so far away from the conveyor belt 1 that a loose position of the solid cylinder 120 is secured.
  • the cage 84 encompasses the conveyor belt 1 so far that the full cylinders 120 are clamped again between the clamping jaws 1205 when they leave the deflection area.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Ink Jet (AREA)
  • Handling Of Cut Paper (AREA)
  • Sorting Of Articles (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Bedrucken eines auf einer Kante stehenden Druckträgers, insbesondere eines Briefes in Frankier- und/oder Adressiermaschinen.The invention relates to a device for printing on a Edge of the print carrier, especially a letter in franking and / or addressing machines.

Bei derartigen Maschinen werden der Druckträger an einer Druckeinrichtung entlanggeführt und in einem Durchlauf die Frankierung beziehungsweise Adresse gedruckt.In such machines, the print carrier on one The printing device is guided along and in one pass Franking or address printed.

Es ist üblich, den Druckträger entweder flach liegend, siehe beispielsweise US 5,467,709 oder auf einer Kante stehend, siehe beispielsweise US 5,025,386, an der Druckeinrichtung entlangzuführen.
In jedem Fall ist es wichtig, daß der Druckträger und die Druckeinrichtung zueinander in eine definierte Position gelangen, damit der Abdruck an der vorgesehenen Stelle und mit ausreichender Qualität erfolgt.
Beim waagerechten Transport wird entsprechend dem größten zum Einsatz kommenden Druckträgerformat eine relativ große Auflagefläche benötigt, wodurch wiederum für die Maschine eine entsprechend große Standfläche bedingt ist.
In der Lösung gemäß US 5,467,709 wird berührungslos mittels eines Tintendruckkopfes gedruckt. Der Brief wird zwischen einem angetriebenen Transportband und federnd gelagerten Andruckrollen befördert, wobei der Brief außerdem an einer Längsführungsplatte anliegt. Die Längsführungsplatte ist mit einer dem Transportband angepaßten Ausnehmung und mit einer rechteckförmigen Ausnehmung für den Tintendruckkopf versehen, über deren Diagonale die Düsenreihe des Tintendruckkopfes verläuft. Das Transportband, die Längsführungsplatte und der Tintendruckkopf sind über dem Brief angeordnet. Die federnden Andruckrollen und eine im Druckbereich federnd gelagerte Andruckrolle sind unter dem Brief angeordnet.
Der Federweg der Andruckrollen und der Andruckplatte entspricht der maximalen Dicke der Briefe, die zwischen 2 mm und 20 mm schwanken kann.
Die Federkraft muß für den gesamten Gewichtsbereich der Briefe ausreichen - ungefähr 20 bis 1000 g - und außerdem dafür, daß die Briefe ausreichend plan im Bereich der Ausnehmung für den Druckkopf anliegen.
Für das berührungslose Tintendruckverfahren muß ein konstanter, möglichst geringer Abstand zwischen Druckträger und Tintendruckkopf eingehalten werden, damit einerseits Schiefspritzer geringe Auswirkungen haben und andererseits der Druckträger nicht die Düsenfläche berührt und somit Schmierer vermieden werden.
Die Gefahr der Verschmierung besteht aber trotzdem noch, wenn der Brief den Bereich der Ausnehmung verläßt und dann zwangsläufig an der Längsführungsplatte entlanggleitet.
Bei schnell wechselnder Mischpost sind diese Bedingungen schwer einzuhalten.
It is customary to guide the print carrier along the printing device either lying flat, see for example US 5,467,709 or standing on an edge, see for example US 5,025,386.
In any case, it is important that the print carrier and the printing device come to a defined position in relation to one another so that the print is made at the intended location and with sufficient quality.
In the case of horizontal transport, a relatively large contact area is required in accordance with the largest print carrier format used, which in turn requires a correspondingly large footprint for the machine.
In the solution according to US Pat. No. 5,467,709, printing is carried out without contact by means of an ink print head. The letter is conveyed between a driven conveyor belt and spring-loaded pressure rollers, the letter also abutting a longitudinal guide plate. The longitudinal guide plate is provided with a recess adapted to the conveyor belt and with a rectangular recess for the ink print head, over the diagonal of which the row of nozzles of the ink print head runs. The conveyor belt, the length guide plate and the ink print head are arranged above the letter. The resilient pressure rollers and a pressure roller resiliently mounted in the printing area are arranged under the letter.
The spring travel of the pressure rollers and the pressure plate corresponds to the maximum thickness of the letters, which can vary between 2 mm and 20 mm.
The spring force must be sufficient for the entire weight range of the letters - approximately 20 to 1000 g - and also for the letters to lie sufficiently flat in the area of the recess for the print head.
For the non-contact ink printing process, a constant, as small as possible distance between the print carrier and the ink print head must be maintained so that, on the one hand, misaligned splashes have little effect and, on the other hand, the print carrier does not touch the nozzle surface and thus lubricants are avoided.
However, there is still the risk of smearing if the letter leaves the area of the recess and then inevitably slides along the longitudinal guide plate.
In the case of rapidly changing mixed mail, these conditions are difficult to meet.

Weiterhin ist eine Frankiermaschine bekannt, vergleiche US 5,025,386 bei der die Briefe hochkant, leicht geneigt auf einem umlaufenden Transportband befördert werden. Die Briefe liegen dabei an einem Führungsblock an, in dem ein Druckfenster vorgesehen ist. Im Druckfenster ist ein Thermodruckkopf höhen- und seitenverschiebbar angeordnet, mit dem der Frankierdruck auf den Brief erfolgt.
Die Größe des Druckfensters muß der maximalen Länge und Breite des Druckbildes angepaßt sein.
Der einzelne Brief wird bis zu dem Druckfenster bewegt und dann angehalten und mittels einer Andruckplatte gegen das Führungsblech beziehungsweise das Druckfenster gedrückt. Die Andruckplatte wird von einem Motor über Zahnradgetriebe und ein Kurbelgelenk angetrieben. Das ist ein relativ großer mechanischer Aufwand und die aufzubringenden Gegendruckkräfte für Thermodruck sind gleichfalls groß.
Nach dem Bedrucken wird der Brief freigegeben und weiter transportiert. Es ist offensichtlich, daß mit diesem intermittierenden Betrieb nur geringe Brief-Durchlaufquoten erreichbar sind. Der Aufwand für die Thermodruckkopfverstellung ist erheblich.
Furthermore, a franking machine is known, compare US 5,025,386 in which the letters are conveyed upright, slightly inclined on a rotating conveyor belt. The letters rest on a guide block in which a print window is provided. In the print window, a thermal print head can be moved vertically and laterally, with which franking is printed on the letter.
The size of the print window must be adapted to the maximum length and width of the print image.
The individual letter is moved to the print window and then stopped and pressed against the guide plate or the print window by means of a pressure plate. The pressure plate is driven by a motor via gear drives and a crank joint. This is a relatively large mechanical effort and the counterpressure forces to be applied for thermal printing are also large.
After printing, the letter is released and transported on. It is evident that only low letter throughput rates can be achieved with this intermittent operation. The effort for the thermal print head adjustment is considerable.

Zweck der Erfindung ist eine Vereinfachung des Brieftransports und eine Verbesserung der Drucktechnik.The purpose of the invention is to simplify the transport of letters and an improvement in printing technology.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Transport eines auf der Kante stehenden Druckträgers zu schaffen, die bei einfacher Bauweise eine präzise Führung des Druckträgers und ein einwandfreies Druckbild gewährleistet.The invention has for its object a device for Transport of a print carrier standing on the edge to create the with simple construction, a precise guidance of the pressure carrier and a perfect print image guaranteed.

Erfindungsgemäß wird diese Aufgabe gemäß den Patentansprüchen gelöst.
Aufgrund der unmittelbaren Kopplung der Andruckelemente mit dem Transportband und des Einsatzes eines Tintendruckkopfes sind ein kontinuierlicher Transport und Druckvorgang möglich. Da berührungslos gedruckt wird, sind die erforderlichen Andruckkräfte gering, zumal die Reibung an der Führungsplatte durch entsprechende glatte Oberfläche und Gleitschienen niedrig gehalten werden kann.
Die erfindungsgemäße Gestaltung des dem Druckbereich beziehungsweise der Ausnehmung folgenden Bereiches bewirkt, daß der Druckträger an dieser Stelle freiliegt.
According to the invention, this object is achieved according to the patent claims.
Due to the direct coupling of the pressure elements with the conveyor belt and the use of an ink print head, a continuous transport and printing process is possible. Since contactless printing is used, the required pressure forces are low, especially since the friction on the guide plate can be kept low by means of a correspondingly smooth surface and slide rails.
The inventive design of the area following the print area or the recess causes the print carrier to be exposed at this point.

Dadurch werden eine genügend lange Eindringzeit für die Tinte erreicht und so ein Verschmieren des Druckbildes verhindert.
Indem der Bereich vor der Ausnehmung und die Düsenebene hintereinandergestaffelt zurückversetzt sind sowie der nachfolgende Bereich noch weiter zurückversetzt oder offen ist, wird außerdem noch ein Verhaken des Aufzeichnungsträgers an einer der Kanten verhindert.
Im einzelnen ist die Führungsplatte im Bereich nach der Ausnehmung wahlweise entweder als offene Ausnehmung fortgesetzt oder durch mechanische Formgebung - beispielsweise beim Plastspritzverfahren mittels der Gußform - oder durch Abtragung gegenüber der Anlagefläche für den Druckträger um eine Tiefe zurückversetzt, die größer ist als die größte zu erwartende Wölbung des Druckträgers im bedruckten Bereich.
Bei den beiden letzteren Varianten beträgt das praktisch zwar nur einige Zehntelmillimeter, aber zwecks Realisierung des gestaffelten Rückversatzes kann die Freiraumtiefe bis zu zwei Millimeter betragen.
Durch die Anordnung von Gleitschienen in Transportrichtung an der Führungsplatte kann die Anlagefläche für den Druckträger wesentlich verkleinert werden und damit auch die Reibung.
Der bereits erwähnte anlagefreie Bereich für den bedruckten Teil des Druckträgers ist leicht realisierbar, indem die Gleitschienen weiter auseinanderstehen als die Druckbildbreite und dicker sind als die größte zu erwartende Wölbung des Druckträgers.
Die Realisierung des strukturierten Teils der Führungsplatte mittels eines Einsatzes aus einem rostfreien Metall hat mehrere Vorteile. So kann dieser Einsatz mit einem Folgewerkzeug aus einem Stück Blech maßhaltig gestanzt und gedrückt werden. Rostfreies Metall ist sehr gut polierbar, abriebfest und hat gute Gleiteigenschaften. Das ermöglicht besonders gute Gleitbedingungen für die aus Plast bestehenden Andruckelemente, wenn kein Druckträger zwischen diesen und der Führungsplatte eingespannt ist. Schließlich können statische Aufladungen von dem Metall gut abgeleitet werden.
This allows the ink to penetrate long enough to prevent smudging of the printed image.
The fact that the area in front of the recess and the nozzle plane are staggered behind one another, and that the subsequent area is set back even further or is open, also prevents the recording medium from getting caught on one of the edges.
Specifically, the guide plate in the area after the recess is either either continued as an open recess or set back by a depth which is greater than the largest to be expected by mechanical shaping - for example in the case of the plastic injection method using the casting mold - or by removal from the contact surface for the pressure carrier Curvature of the print medium in the printed area.
In the case of the latter two variants, this is practically only a few tenths of a millimeter, but the clearance depth can be up to two millimeters in order to realize the staggered back offset.
By arranging slide rails in the transport direction on the guide plate, the contact surface for the pressure carrier can be significantly reduced and thus also the friction.
The already mentioned system-free area for the printed part of the print carrier can be easily realized in that the slide rails are further apart than the print image width and are thicker than the largest curvature of the print carrier to be expected.
The realization of the structured part of the guide plate by means of a stainless metal insert has several advantages. This insert can then be punched and pressed out of a piece of sheet metal using a follow-on tool. Stainless metal is very easy to polish, abrasion-resistant and has good sliding properties. This enables particularly good sliding conditions for the pressure elements made of plastic, if no pressure carrier is clamped between them and the guide plate. Finally, static charges can be dissipated well from the metal.

Wenn Frankier- und Adressendruck in einem Durchlauf erfolgen sollen, ist das zwar mit einem Tintendruckkopf möglich, es bedingt jedoch eine entsprechende Verstelleinrichtung für den Tintendruckkopf.
Ist jeder Ausnehmung beziehungsweise Druckfunktion ein Tintendruckkopf fest zugeordnet, dann entfällt nicht nur die Verstelleinrichtung sondern es kann je nach Wunsch verschiedenfarbig - beispielsweise Frankierdruck rot und Adressendruck schwarz - gedruckt werden.
If franking and address printing are to be carried out in one pass, this is possible with an ink print head, but it requires a corresponding adjustment device for the ink print head.
If an ink print head is permanently assigned to each recess or print function, then not only is the adjustment device not necessary, but it can also be printed in different colors, for example franking imprint red and address printing black.

Die Führungsplatte und das Transportband bilden einen Winkel von 90°. Legt man die Koordinaten eines gedachten Koordinatenkreuzes mit x in Transportrichtung beziehungsweise Längskante des Transportbandes, z in Breitenrichtung des Transportbandes und y in die Höhenausdehnung der Führungsplatte, dann ist ersichtlich, daß die z- und x- Position des Druckträgers mittels der Andruckelemente leicht einhaltbar ist. Die Neigung der Führungsplatte ist dabei so gewählt, daß der Druckträger bereits ohne Einwirkung der Andruckelemente eine sichere Anlageposition bezieht, aber trotzdem die Anlagekraft in dieser Position so gering ist, daß der Abrieb vernachlässigbar ist.
Die Anordnung der Andruckelemente auf dem Transportband ermöglicht eine Variation des Brieftransports.
Bei Ausführung der Führungsplatte als ebene Platte steht der Brief auf dem Transportband.
Bei Ausführung der Führungsplatte als L-förmig abgewinkelte Platte steht der Brief auf dem kurzen Schenkel des L-Teils.
Die Schräglage ist vorzugsweise in einem Winkel α = 18° der zx-Ebene aus dem Lot. Damit wird eine Minimierung der am Druckträger angreifenden Kräfte erreicht. In Abhängigkeit von der Reibpaarung ist auch ein Bereich der Schräglage von größer 90° bis 135° möglich.
The guide plate and the conveyor belt form an angle of 90 °. If you place the coordinates of an imaginary coordinate cross with x in the transport direction or longitudinal edge of the conveyor belt, z in the width direction of the conveyor belt and y in the vertical extension of the guide plate, it can be seen that the z and x position of the print carrier can be easily maintained by means of the pressure elements. The inclination of the guide plate is chosen so that the print carrier moves into a secure contact position even without the action of the pressure elements, but the contact force in this position is nevertheless so low that the abrasion is negligible.
The arrangement of the pressure elements on the conveyor belt enables a variation of the letter transport.
When the guide plate is designed as a flat plate, the letter is on the conveyor belt.
When the guide plate is designed as an L-shaped angled plate, the letter stands on the short leg of the L-part.
The inclined position is preferably perpendicular to the zx plane at an angle α = 18 °. This minimizes the forces acting on the print carrier. Depending on the friction pairing, a range of the inclined position from greater than 90 ° to 135 ° is also possible.

Die Anordnung des Inkrementalgebers und der Antriebswalze auf einer gemeinsamen Achse und die Verwendung eines aus einem Zahniemen bestehenden Transportbandes sichern eine genaue Erfassung des Transportweges und eine schlupffreie Bewegungsübertragung.The arrangement of the incremental encoder and the drive roller on one common axis and the use of a one tooth belt existing conveyor belt ensure an exact recording of the Transport route and a slip-free movement transmission.

Für die Andruckelemente sind unterschiedliche Ausführungen möglich. Die streifen-, ring- und U-förmigen Klemmlaschen können gleich als zusätzliche Konfektionierung des Transportbandes unlösbar mittels Verkleben, Vulkanisieren oder Verschweißen mit letzterem verbunden sein. Je nach Bedürfnis ist jedoch auch eine lösbare formschlüssige Verbindung beispielsweise mittels balliger Zapfen an der Unterseite der Andruckelemente und Löcher im Transportband möglich. Die Andruckelemente sind dann leicht einzuschnappen, haben aber trotzdem einen festen Sitz. Different designs are possible for the pressure elements. The strip, ring and U-shaped clamping tabs can be used as additional assembly of the conveyor belt cannot be solved by means of Gluing, vulcanizing or welding connected to the latter his. Depending on the need, however, there is also a releasable positive fit Connection, for example, by means of crowned pins on the underside of the Pressure elements and holes in the conveyor belt possible. The pressure elements are then easy to snap, but still have one tight fit.

Die U-Form erscheint als besonders vorteilhaft sowohl für die Klemmlasche als auch für die mittels des Stößels geführte Andruckfeder. Bei der Ausführung des Andruckelementes als federnd gelagerter Stößel mit teilweise mit einem Reibbelag versehener Andruckplatte sind Mitnahme- und Gleiteigenschaften besonders gut beherrschbar.
Durch die federnde Auslenkung der Andruckelemente und die zweckentsprechende Gestaltung des Übergangs bis zum Kraftschluß mit dem Druckträger beziehungsweise mit der Führungsplatte durch angepaßte Auslenkelemente werden eine kontinuierliche Anpassung an die unterschiedlichen Dicken der Druckträger und eine kontinuierliche Einleitung der Andruckkraft erreicht.
Der Einsatz eines geeigneten Polyurethanwerkstoffes oder Gummis für die Klemmlaschen und für die U-förmige Feder bietet den Vorteil der höheren Verschleißfestigkeit und der Geräuschminderung, darüber hinaus ist eine große Variation der Federeigenschaften möglich.
The U-shape appears to be particularly advantageous both for the clamping tab and for the pressure spring guided by means of the plunger. When the pressure element is designed as a spring-mounted plunger with a pressure plate that is partially provided with a friction lining, driving and sliding properties are particularly easy to control.
Due to the resilient deflection of the pressure elements and the appropriate design of the transition to the frictional connection with the pressure carrier or with the guide plate by means of adapted deflection elements, a continuous adaptation to the different thicknesses of the pressure carriers and a continuous introduction of the pressure force are achieved.
The use of a suitable polyurethane material or rubber for the clamping tabs and for the U-shaped spring offers the advantage of greater wear resistance and noise reduction, and a large variation in spring properties is also possible.

Die Ausführung des Andruckelementes mit einer Andruckplatte aus beispielsweise einem geeigneten Polyamid, die auf die Führungsplatte zu und von dieser weg federnd beweglich angeordnet und die in einem Teilbereich mit einem Reibbelag aus einem geeigneten Polyurethan beschichtet ist, hat mehrere Vorteile.
Mit dem beschichteten Teil werden gute Mitnahmeeigenschaften bezüglich des Druckträgers erzielt.
Mit dem unbeschichteten Teil der Andruckplatte werden gute Gleiteigenschaften beim unmittelbaren Gleiten desselben an der Führungsplatte erreicht. Das ist der Fall, wenn momentan kein Druckträger eingespannt ist.
Die federnde Lagerung der Andruckplatte ermöglicht, wie bereits erwähnt, eine problemlose Anpassung an die unterschiedlichen Briefdicken,
Die Gestaltung der übrigen Teile des Andruckelements hat weitere Vorteile zur Folge.
Das Andruckelement ist aus folgenden Teilen zusammengesetzt:

  • Einem Bügel mit einer Vorderwand als Andruckplatte, einer Deckplatte und einer Rückwand mit einem Fortsatz. Die Deckplatte ist als Verbindungsstück zwischen Andruckplatte und Rückwand ausgebildet.
  • Einer Achse, die zwischen Vorderwand und Rückwand eingesetzt ist.
  • Einer U-förmigen Gummifeder, die in ihrer Mitte auf der Achse geführt ist.
  • Einem Lagerboden mit einem Gleitlager für die Achse. Der Lagerboden weist außerdem in seiner Rückwand Ausnehmungen zur Befestigung der freien Enden der U-förmigen Feder auf, wobei die Enden etwas über die Rückwand hinausragen. In die Unterseite des Lagerbodens ist eine Ausnehmung eingeformt zur lösbaren formschlüssigen Aufnahme von Zapfen einer Gegenplatte. Die Gegenplatte ist in einer Zahnlücke des Zahnriemens angeordnet und die Zapfen ragen durch entsprechend angepaßte Löcher des Zahnriemens. Der Lagerboden wird auf die Zapfen bis zum Anschlag aufgeschoben. Auf diese Weise schließen der Lagerboden und die Gegenplatte den Zahnriemen zwischen sich ein und der Lagerboden ist sicher befestigt.
The design of the pressure element with a pressure plate made of, for example, a suitable polyamide, which is arranged so as to be resiliently movable towards and away from the guide plate and which is coated in a partial area with a friction lining made of a suitable polyurethane has several advantages.
With the coated part, good entrainment properties with regard to the print carrier are achieved.
With the uncoated part of the pressure plate, good sliding properties are achieved when sliding directly on the guide plate. This is the case if no print carrier is currently clamped.
The resilient mounting of the pressure plate enables, as already mentioned, problem-free adaptation to the different letter thicknesses,
The design of the remaining parts of the pressure element has further advantages.
The pressure element is composed of the following parts:
  • A bracket with a front wall as a pressure plate, a cover plate and a rear wall with an extension. The cover plate is designed as a connecting piece between the pressure plate and the rear wall.
  • An axle that is inserted between the front wall and rear wall.
  • A U-shaped rubber spring, which is guided in the middle on the axis.
  • A bearing base with a plain bearing for the axis. The bearing base also has recesses in its rear wall for fastening the free ends of the U-shaped spring, the ends projecting somewhat beyond the rear wall. A recess is formed in the underside of the bearing base for the releasable, form-fitting reception of pins of a counterplate. The counter plate is arranged in a tooth space of the toothed belt and the pins protrude through correspondingly adapted holes in the toothed belt. The bearing base is pushed onto the pin as far as it will go. In this way, the bearing base and the counterplate enclose the toothed belt between them and the bearing base is securely fastened.

Das Andruckelement läßt sich leicht zusammensetzen und an dem Zahnriemen montieren. Die überstehenden Enden der U-förmigen Gummifeder dienen als geräuscharme Stoßdämpfer für die Rückwand des Bügels. Selbstverständlich könnte für die Feder anstelle von Gummi auch ein geeigneter Silikonkautschuk oder Polyurethan eingesetzt werden.The pressure element can be easily put together and on the Mount the toothed belt. The protruding ends of the U-shaped Rubber springs serve as low-noise shock absorbers for the rear wall of the bracket. Of course, for the spring instead of Rubber is also a suitable silicone rubber or polyurethane be used.

Die Ausbildung der Rückwand mit einem Fortsatz zur Führung des Bügels im Anfangs- und Endbereich des Transportbandes durch Auslenkelemente ermöglicht eine einfache Realisierung mittels einer kontinuierlich nach außen gekröpften plattenförmigen Kulisse.
Die Kulisse gibt das Andruckelement je nach Lage desselben entweder kontinuierlich frei oder ganz frei oder sperrt es.
The formation of the rear wall with an extension for guiding the bracket in the beginning and end region of the conveyor belt by means of deflection elements enables simple implementation by means of a plate-shaped link that is continuously cranked outwards.
Depending on the position of the pressure element, the backdrop either releases the pressure element continuously or completely, or blocks it.

Die Erfindung wird nachstehend am Ausführungsbeispiel näher erläutert.
Es zeigen:

Fig. 1
eine perspektivische Ansicht einer erfindungsgemäßen Anordnung mit gerader Führungsplatte und Brieftransport auf einem Transportband mit Andruckelementen,
Fig. 2
eine Führungsplatte mit einem Einsatz,
  • a) die Gesamtansicht,
  • b) den Einsatz in der Perspektive,
  • c) einen Längsschnitt im Druckbereich,
  • Fig. 3
    eine Seitenansicht einer erfindungsgemäßen Anordnung mit L-förmiger Führungsplatte und Brieftransport auf dem kurzen Schenkel der Führungsplatte,
    Fig. 4
    ein Transportband mit streifenförmigen Klemmlaschen, hochkant befestigt,
    Fig. 5
    ein Transportband mit streifenförmigen Klemmlaschen, flach befestigt,
    Fig. 6
    ein Transportband mit ringförmigen Klemmlaschen, hochkant außen befestigt,
    Fig. 7
    ein Transportband mit ringförmigen Klemmlaschen, hochkant mittig befestigt,
    Fig. 8
    ein Transportband mit U-förmigen Klemmlaschen,
    Fig. 9
    eine Explosivdarstellung eines Andruckelements mit federnder Andruckplatte, von oben hinten gesehen,
    Fig. 10
    eine Explosivdarstellung eines Andruckelements mit federnder Andruckplatte, von unten vorn gesehen,
    Fig. 11
    eine Draufsicht nach Fig. 1 mit drei Stellungsvarianten für das Andruckelement, teilweise im Schnitt,
    Fig. 12
    ein Transportband mit Vollzylindern und Klemmbacken,
    Fig. 13
    Details der Auslenkung nach Fig. 12 im vorderen Umlenkbereich des Transportbandes,
    Fig. 14
    Details der Auslenkung nach Fig. 12 im hinteren Umlenkbereich des Transportbandes.
    The invention is explained in more detail below using the exemplary embodiment.
    Show it:
    Fig. 1
    1 shows a perspective view of an arrangement according to the invention with a straight guide plate and letter transport on a conveyor belt with pressure elements,
    Fig. 2
    a guide plate with an insert,
  • a) the overall view,
  • b) use in perspective,
  • c) a longitudinal section in the printing area,
  • Fig. 3
    2 shows a side view of an arrangement according to the invention with an L-shaped guide plate and letter transport on the short leg of the guide plate,
    Fig. 4
    a conveyor belt with strip-shaped clamping tabs, fastened upright,
    Fig. 5
    a conveyor belt with strip-shaped clamping tabs, fastened flat,
    Fig. 6
    a conveyor belt with ring-shaped clamping tabs, attached on the outside, on edge,
    Fig. 7
    a conveyor belt with ring-shaped clamping tabs, fixed vertically in the middle,
    Fig. 8
    a conveyor belt with U-shaped clamping tabs,
    Fig. 9
    2 shows an exploded view of a pressure element with a resilient pressure plate, seen from above from behind,
    Fig. 10
    4 shows an exploded view of a pressure element with a resilient pressure plate, seen from below in front,
    Fig. 11
    1 with three positions for the pressure element, partly in section,
    Fig. 12
    a conveyor belt with full cylinders and clamping jaws,
    Fig. 13
    12 in the front deflection area of the conveyor belt,
    Fig. 14
    Details of the deflection according to FIG. 12 in the rear deflection area of the conveyor belt.

    Zur Vereinfachung der Darstellung und zum besseren Verständnis sind Teile weggelassen worden, die nicht zur Erläuterung benötigt werden, und die Zeichnung teilweise schematisiert ausgeführt. To simplify the presentation and for better understanding are Parts that are not required for explanation have been omitted, and the drawing is partially schematic.

    Gemäß Fig.1 sind auf einem umlaufenden Transportband 1 Andruckelemente 12 lösbar befestigt. Zu diesem Zweck ist das Transportband 1 mit Löchern 100 versehen, durch die eine Gegenplatte 126 mit Zapfen 1261 ragt, die in nicht näher dargestellte zugeordnete Öffnungen der Andruckelemente 12 eingeschoben sind, siehe auch Fig.9 und 10.
    Das Transportband 1 besteht vorzugsweise aus einem Zahnriemen 10 und zwei Zahnwalzen 11. Der Einfachheit halber ist die Zahnung nicht dargestellt. Die Gegenplatte 126 ist zweckmäßigerweise in einer Zahnlücke angeordnet und die Zahnwalzen 11 sind entsprechend angepaßt beziehungsweise mit Ausnehmungen versehen, siehe auch Fig.9.
    Die antreibende Zahnwalze 11 ist in der Nähe des Druckbereiches gemeinsam mit einem Inkrementalgeber 5 fest auf einer Achse angeordnet. Der Inkrementalgeber 5 kann als Schlitzscheibe ausgeführt sein, die von einer Fotozelle 6 angestrahlt wird. Nicht sichtbar ist hinter der Schlitzscheibe eine Fotodiode zwecks Auswertung angeordnet. Der Inkrementalgeber 5 wirkt über eine Auswerte- und Steuerschaltung mit einem Sensor 7 für die Briefanfangserkennung zusammen, um den Druck zum richtigen Zeitpunkt auszulösen.
    Außerhalb des Transportbandes 1 aber innerhalb der Umlaufbahn der Andruckelemente 12 sind im Ein- und Austrittsbereich der Briefe 3 Auslenkelemente 8 angeordnet. In diesem Fall in Form einer kontinuierlich nach außen gekröpften Kulisse. Es können jedoch auch einfach nach außen gekrümmte Streifen sein, siehe Fig.4 bis 6.
    Die Auslenkelemente 8 dienen im Eintrittsbereich dazu, die Andruckelemente 12 so weit zurückzunehmen, daß der dickste zugelassene Brief 3 problemlos auf das Transportband 1 gelangt.
    Die Auslenkelemente 8 dienen im Austrittsbereich dazu, die Andruckelemente 12 so weit zurückzunehmen, daß jeder transportierte Brief 3 sicher freigegeben wird und das Transportband 1 in Richtung einer Ablageeinrichtung verlassen kann.
    Beim Transport stehen die Briefe 3 hochkant auf dem Transportband 1 und liegen unter der Wirkung der Andruckelemente 12 mit der zu bedruckenden Fläche 32 an einer Führungsplatte 2 an.
    Die Führungsplatte 2 ist zwecks Vororientierung der Briefe 3 und Minimierung der Transportkräfte um einen Winkel α = 18° aus dem Lot geneigt.
    According to Figure 1 1 pressure elements 12 are releasably attached to a rotating conveyor belt. For this purpose, the conveyor belt 1 is provided with holes 100, through which a counter plate 126 with pins 1261 protrudes, which are inserted into the associated openings of the pressure elements 12, not shown, see also FIGS. 9 and 10.
    The conveyor belt 1 preferably consists of a toothed belt 10 and two toothed rollers 11. For the sake of simplicity, the toothing is not shown. The counter plate 126 is expediently arranged in a tooth gap and the toothed rollers 11 are adapted accordingly or provided with recesses, see also FIG. 9.
    The driving toothed roller 11 is arranged in the vicinity of the printing area together with an incremental encoder 5 on an axis. The incremental encoder 5 can be designed as a slotted disc which is illuminated by a photocell 6. A photodiode is not visible behind the slotted disc for evaluation. The incremental encoder 5 interacts via an evaluation and control circuit with a sensor 7 for the letter start detection in order to trigger the printing at the right time.
    Outside the conveyor belt 1 but within the orbit of the pressure elements 12 3 deflection elements 8 are arranged in the entry and exit area of the letters. In this case in the form of a continuously cranked backdrop. However, it can also be simply outwardly curved strips, see FIGS. 4 to 6.
    The deflection elements 8 serve in the entrance area to take back the pressure elements 12 so far that the thickest approved letter 3 easily reaches the conveyor belt 1.
    The deflection elements 8 serve in the exit area to take back the pressure elements 12 so far that each transported letter 3 is released safely and can leave the conveyor belt 1 in the direction of a storage device.
    During transport, the letters 3 stand upright on the conveyor belt 1 and are in contact with a guide plate 2 with the surface 32 to be printed under the action of the pressure elements 12.
    The guide plate 2 is inclined by an angle α = 18 ° from the plumb in order to pre-orient the letters 3 and to minimize the transport forces.

    Zwecks guter Gleiteigenschaften ist die Führungsplatte 2 mit parallelen Gleitschienen 23, 231 versehen, die sich in Transportrichtung x erstrecken.
    Im Druckbereich weist die Führungsplatte 2 eine erste Ausnehmung 21 für einen Tintendruckkopf 4 auf, die in der Höhe eines aufzubringenden Frankierdruckes liegt. Eine zweite, höher liegende Ausnehmung 22 ist für den Fall vorgesehen, wenn auch noch eine Adresse auf den Brief 3 gedruckt werden soll.
    Je nach Wahl ist dann ein zweiter Tintendruckkopf 4 für diese Ausnehmung 22 fest zugeordnet oder für Frankier- und Adressendruck wird ein gemeinsamer verstellbarer Tintendruckkopf 4 eingesetzt.
    Unabhängig von der Entscheidung, welche Variante zum Einsatz kommt, ist die Düsenebene des Tintendruckkopfes 4 stets parallel zur Führungsplatte 2 anzuordnen und der Brief 3 mit einem möglichst geringen Abstand - kleiner 2 mm - an der Düsenebene vorbeizuführen.
    Die Gleitschienen 231 haben im Bereich 25 nach der Ausnehmung 21, 22 zueinander einen Abstand a, der größer ist als die Druckbildbreite b. Die Dicke d der Gleitschienen 231 ist größer als die größte auftretende Wölbung w des Druckträgers 3 im bedruckten Bereich.
    For the purpose of good sliding properties, the guide plate 2 is provided with parallel slide rails 23, 231 which extend in the transport direction x.
    In the printing area, the guide plate 2 has a first recess 21 for an ink print head 4, which is at the height of a franking imprint to be applied. A second, higher lying recess 22 is provided for the case when an address is also to be printed on the letter 3.
    Depending on the choice, a second ink print head 4 is then permanently assigned for this recess 22, or a common, adjustable ink print head 4 is used for franking and address printing.
    Regardless of the decision as to which variant is used, the nozzle plane of the ink print head 4 must always be arranged parallel to the guide plate 2 and the letter 3 must be guided past the nozzle plane with the smallest possible distance - less than 2 mm.
    The slide rails 231 have a distance a from one another in the area 25 after the recess 21, 22, which is greater than the printed image width b. The thickness d of the slide rails 231 is greater than the largest curvature w occurring in the print carrier 3 in the printed area.

    Gemäß Fig.2a ist die Führungsplatte 2 im Hauptanlage- und Druckbereich für den Brief mit einem Einsatz 20 versehen, der sich in Transportrichtung x erstreckt.
    In den Einsatz 20 sind die Ausnehmungen 201, 202 für den Tintendruckkopf 4 und eine Öffnung 206 für den Sensor 7 eingestanzt sowie alle übrigen erforderlichen Strukturen eingeprägt, einschließlich der Gleitschienen 203, siehe auch Fig.2b.
    Der Einsatz 20 besteht zweckmäßigerweise aus einem Stück rostfreien Metalls.
    Die Gleitschienen 203 sind oberhalb und unterhalb der Ausnehmungen 201, 202 für den Tintendruckkopf 4 durchgehend über die gesamte Länge des Einsatzes 20 angeformt.
    Die Gleitschienen 203 haben im Bereich 205 nach der Ausnehmung 201, 202 zueinander einen Abstand a, der größer ist als die Druckbildbreite b. Die Dicke d der Gleitschienen 203 ist hierbei größer als die größte zu erwartende Wölbung w des Briefes 3 im bedruckten Bereich.
    Mit einem Abstand a > 25 mm und einer Dicke d = 2 mm wird eine ausreichende Sicherheit erreicht.
    According to Figure 2a, the guide plate 2 is provided in the main system and printing area for the letter with an insert 20 which extends in the transport direction x.
    The recesses 201, 202 for the ink print head 4 and an opening 206 for the sensor 7 are punched into the insert 20 and all other necessary structures are stamped, including the slide rails 203, see also FIG. 2b.
    The insert 20 expediently consists of a piece of rustproof metal.
    The slide rails 203 are formed above and below the recesses 201, 202 for the ink print head 4 continuously over the entire length of the insert 20.
    The slide rails 203 have a distance a from one another in the region 205 after the recess 201, 202, which is greater than the printed image width b. The thickness d of the slide rails 203 is greater than the largest curvature w to be expected of the letter 3 in the printed area.
    Adequate security is achieved with a distance a> 25 mm and a thickness d = 2 mm.

    Wie in Fig.2c ersichtlich, sind der Bereich 204 vor den Ausnehmungen 201, 202, die Düsenebene 40 des Tintendruckkopfes 4 sowie der Bereich 205 danach hintereinander gestaffelt zurückversetzt angeordnet. Auf diese Weise werden Verhakungen der Briefe verhindert, infogedessen Staus vermieden und die Sicherheit des Brieftransports erhöht.
    Wenn für die Herstellung des Einsatzes entsprechend geeignetes Blech verwendet wird, ist die Realisierung unproblematisch.
    As can be seen in FIG. 2c, the area 204 in front of the recesses 201, 202, the nozzle plane 40 of the inkjet print head 4 and the area 205 thereafter are staggered behind one another. This prevents the letters from getting caught, prevents traffic jams and increases the security of letter transport.
    If suitable sheet metal is used for the production of the insert, the implementation is unproblematic.

    Gemäß Fig.3 ist die Führungsplatte 2 L-förmig gestaltet, wobei der Brief 3 mit einer Kante 31 auf dem kurzen Schenkel 27 des L-Teils der Führungsplatte 2 steht beziehungsweise entlanggleitet und an dem langen Schenkel 26 beziehungsweise an den an diesem befindlichen Gleitschienen 23 anliegt. Selbstverständlich sind beide Schenkel 26, 27 orthogonal zueinander angeordnet. Der kurze Schenkel 27 ist in Transportrichtung hochglanzpoliert. Das würde auch allgemein für die Führungsplatte 2 zutreffen, falls keine Gleitschienen 23 vorgesehen sind.
    Ansonsten ist die weitere Gestaltung analog zum vorher Beschriebenen.
    According to Figure 3, the guide plate 2 is L-shaped, the letter 3 with an edge 31 on the short leg 27 of the L part of the guide plate 2 or slides along and on the long leg 26 or on the slide rails 23 located thereon is present. Of course, both legs 26, 27 are arranged orthogonally to one another. The short leg 27 is highly polished in the direction of transport. This would also apply generally to the guide plate 2 if no slide rails 23 are provided.
    Otherwise, the further design is analogous to that previously described.

    Für die Andruckelemente 12 bestehen vielfältige Ausführungsmöglichkeiten. Der Bereich ihrer Befestigung kann annähernd in der Mitte des Transportbandes 1 liegen oder der mit dem größten Abstand zur Führungsplatte 2 sein.There are various design options for the pressure elements 12. The area of their attachment can be approximately in the middle of the Conveyor belt 1 or the one with the greatest distance to Guide plate 2 be.

    Gemäß Fig.4 sind die Andruckelemente 12 als streifenförmige Klemmlaschen ausgebildet, die quer zur Transportrichtung auf einer Längskante stehend mit dem von der Führungsplatte 2 abgewandten Ende 1201 mit dem Transportband 1 verbunden sind.
    Im Unterschied zu Fig. 1 wird für diese Ausführung eine unlösbare Befestigung bevorzugt, das kann mittels Kleben oder Schweißen erfolgen.
    Im vorderen Umlenkbereich des Transportbandes 1 wird die Klemmlasche 12 mittels des Auslenkelementes 8 entgegen der Transportrichtung weggebogen und gleitet kontinuierlich an dem Auslenkelement 8 entlang seitlich an den Brief 3 heran.
    According to FIG. 4, the pressure elements 12 are designed as strip-shaped clamping tabs, which, standing transversely to the transport direction, are connected to the conveyor belt 1 with the end 1201 facing away from the guide plate 2 and standing on a longitudinal edge.
    In contrast to FIG. 1, an inseparable fastening is preferred for this embodiment, which can be done by gluing or welding.
    In the front deflection area of the conveyor belt 1, the clamping flap 12 is bent away against the transport direction by means of the deflection element 8 and continuously slides along the deflection element 8 to the side of the letter 3.

    Wie Fig. 5 zu entnehmen ist, kann die streifenförmige Klemmlasche auch quer zur Transportrichtung flach mit dem von der Führungsplatte 2 abgewandten Ende 1201 mit dem Transportband 1 verbunden sein. Die Klemmlasche gleitet mit Hilfe des Auslenkelementes 8 von oben her an den Brief 3 heran.5 can be seen, the strip-shaped clamping tab also transversely to the transport direction flat with that of the guide plate 2 opposite end 1201 to be connected to the conveyor belt 1. The clamping tab slides from above with the aid of the deflection element 8 approach letter 3.

    Gemäß Fig.6 ist das Klemmelement 12 als ringförmige Klemmlasche ausgeführt, die hochkant mit dem von der Führungsplatte 2 abgewandten Teil 1201 auf dem Transportband 1 befestigt ist.According to Figure 6, the clamping element 12 is an annular clamping tab executed upright with that of the guide plate 2 part 1201 facing away from the conveyor belt 1 is attached.

    Fig.7 zeigt die Verhältnisse, wenn die ringförmige Klemmlasche 12 mittig mit dem in Transportrichtung vorn liegenden Bereich 1202 auf dem Transportband 1 befestigt ist. Gegenüber den streifenförmigen Klemmlaschen 12 können mit den ringförmigen Klemmlaschen 12 bessere Federeigenschaften erzielt werden.7 shows the conditions when the annular clamping tab 12 in the middle with area 1202 lying at the front in the direction of transport the conveyor belt 1 is attached. Opposite the stripe-shaped Clamping tabs 12 can be connected to the annular clamping tabs 12 better spring properties can be achieved.

    Analog sind die Verhältnisse, wenn die Andruckelemente 12 gemäß Fig.8 als U-förmige Klemmlaschen ausgebildet sind. Die U-förmigen Klemmlaschen 12 sind mit den von der Führungsplatte 2 abgewandten Schenkeln 1203 quer zur Transportrichtung hochkant auf dem Transportband 1 befestigt. Der halbkreisförmige Bereich der Klemmlaschen 12 ist mit Auslenkung entgegen der Transportrichtung hochkant auf dem Transportband 1 angeordnet.The situation is analogous if the pressure elements 12 according to 8 are designed as U-shaped clamping tabs. The U-shaped Clamping tabs 12 are facing away from the guide plate 2 Legs 1203 upright across the transport direction on the Conveyor belt 1 attached. The semicircular area of the clamping tabs 12 is with deflection against the direction of transport arranged upright on the conveyor belt 1.

    Alle vorstehend beschriebenen Klemmlaschen 12 bestehen aus einem gummielastischen Material, vorzugsweise einem Polyurethanwerkstoff.All clamping tabs 12 described above consist of a rubber-elastic material, preferably a polyurethane material.

    Gemäß Fig.9 und 10 ist ein Andruckelement 12 als federnd gelagerter Bügel 121 ausgeführt, dessen Achse 123 quer zur Transportrichtung in einem Gleitlager 1251 geführt ist. Das Gleitlager 1251 ist mit einem Lagerboden 125 starr verbunden, der auf dem Transportband 1 befestigt ist.
    Die Achse 123 trägt an der Stirnseite eine Andruckplatte 1211, die zur Führungsplatte 2 hin teilweise so mit einem Reibbelag 122 belegt ist, daß derselbe nur an einem Brief 3 kraftschlüssig zur Anlage kommen kann. Bei fehlendem Brief 3 gleitet die Andruckplatte 1211 auf der Gleitschiene 23 beziehungsweise 203, das heißt, der Reibbelag 122 ist dünner als die Dicke d der Gleitschiene 23, 203 beziehungsweise als dieselbe vorragt und liegt dadurch frei, vergleiche auch Fig.11.
    According to FIGS. 9 and 10, a pressure element 12 is designed as a spring-mounted bracket 121, the axis 123 of which is guided in a slide bearing 1251 transversely to the transport direction. The sliding bearing 1251 is rigidly connected to a bearing base 125 which is fastened on the conveyor belt 1.
    The axis 123 carries a pressure plate 1211 on the end face, which is partly covered with a friction lining 122 towards the guide plate 2 such that the same can only come into positive contact with a letter 3. If the letter 3 is missing, the pressure plate 1211 slides on the slide rail 23 or 203, that is to say the friction lining 122 is thinner than the thickness d of the slide rail 23, 203 or projects therefrom and is therefore exposed, see also FIG. 11.

    Damit die Andruckplatte 1211 nicht verkanten kann, ist an deren Rückseite eine Deckplatte 1212 angebracht, die auf der Rückwand 1252 des Lagerbodens 125 abgestützt ist und durch eine Rückwand 1213 abgeschlossen wird.
    In der Andruckplatte 1211 ist eine Bohrung 12111 und in der Rückwand 1213 ist eine Bohrung 12131 vorgesehen. Beide Bohrungen 12111, 12131 dienen zur Aufnahme der Achse 123.
    Zwischen Andruckplatte 1211 und Lagerboden 125 ist eine U-förmige Feder 124 so angeordnet, daß der gebogene Teil an der Andruckplatte 1211 anliegt und die freien Schenkel 1241 im Lagerboden 125 gefaßt sind.
    Die Feder 124 hat in ihrem Mittelteil 1240 eine Bohrung 12401, mit der die Feder 124 auf die Achse 123 festsitzend geschoben ist.
    Die freien Schenkel 1241 der Feder 124 sind formschlüssig in schlitzförmigen Ausnehmungen 12521 der Rückwand 1252 des Lagerbodens 125 befestigt. Dabei ragen die Enden 12411 der Schenkel 1241 etwas über die Rückwand 1252 hinaus und bilden auf diese Weise einen stoßgedämpften Anschlag für die Rückwand 1213 des Bügels 121
    Die Feder 124 besteht vorzugsweise aus Gummi. Damit werden gute Lebensdauer-, Feder- und Dämpfungseigenschaften erreicht. Nicht zuletzt ist dieser Werkstoff preiswert.
    Die Rückwand 1213 des Bügels 121 läuft in einen Fortsatz 12132 aus, der in Wirkverbindung mit den Auslenkelementen 8 treten kann. Der Fortsatz 12132 liegt jeweils im Anfangsbereich und im Endbereich des Transportbandes 1 an dem Einlenkungsteil 81 beziehungsweise dem Auslenkungsteil 82 der Kulisse 8 an, vergleiche Fig.1 und 11.
    So that the pressure plate 1211 cannot tilt, a cover plate 1212 is attached to the rear thereof, which is supported on the rear wall 1252 of the bearing base 125 and is closed off by a rear wall 1213.
    A bore 12111 is provided in the pressure plate 1211 and a bore 12131 is provided in the rear wall 1213. Both holes 12111, 12131 serve to receive the axis 123.
    A U-shaped spring 124 is arranged between the pressure plate 1211 and the bearing base 125 in such a way that the bent part rests on the pressure plate 1211 and the free legs 1241 are held in the bearing base 125.
    The spring 124 has in its central part 1240 a bore 12401 with which the spring 124 is pushed firmly onto the axis 123.
    The free legs 1241 of the spring 124 are positively fastened in slot-shaped recesses 12521 of the rear wall 1252 of the bearing base 125. The ends 12411 of the legs 1241 protrude somewhat beyond the rear wall 1252 and in this way form a shock-absorbing stop for the rear wall 1213 of the bracket 121
    The spring 124 is preferably made of rubber. Good lifespan, spring and damping properties are achieved. Last but not least, this material is inexpensive.
    The rear wall 1213 of the bracket 121 ends in an extension 12132, which can come into operative connection with the deflection elements 8. The extension 12132 lies in the beginning area and in the end area of the conveyor belt 1 against the deflection part 81 and the deflection part 82 of the link 8, respectively, see FIGS. 1 and 11.

    In Fig.11 sind die drei charakteristischen Stellungen gezeigt, die ein Andruckelement 12 einnehmen kann. Zum besseren Verständnis ist der Schnitt unterhalb der Deckplatte 1212 des Bügels 121 dargestellt.
    In der untersten Stellung ist das Andruckelement 12 gerade vom Einlenkungsteil 81 freigegeben worden. Der Brief 3 wird zwischen Reibbelag 122 und Gleitschienen 23 eingeklemmt.
    In der mittleren Stellung ist kein Brief vorhanden. Die Andruckplatte 1211 liegt an der Gleitschiene 23 an und der Reibbelag 122 hat einen Abstand zur Führungsplatte 2 und ist somit frei. Die Rückwand 1213 des Bügels 121 liegt an den Enden 12411 der U-förmigen Feder 124 an.
    11 shows the three characteristic positions that a pressure element 12 can assume. For a better understanding, the section below the cover plate 1212 of the bracket 121 is shown.
    In the lowest position, the pressure element 12 has just been released by the deflection part 81. The letter 3 is clamped between the friction lining 122 and slide rails 23.
    There is no letter in the middle position. The pressure plate 1211 lies against the slide rail 23 and the friction lining 122 is at a distance from the guide plate 2 and is therefore free. The rear wall 1213 of the bracket 121 abuts the ends 12411 of the U-shaped spring 124.

    In der oberen Stellung wird das Andruckelement 12 durch das Auslenkungsteil 82 von der Führungsplatte 2 weggezogen. Die Feder 124 wird hierbei zusammengedrückt und die Rückwand 1213 liegt mit dem Fortsatz 12132 an dem Auslenkteil 82 an, siehe auch Fig.10.In the upper position, the pressure element 12 is by the Deflection part 82 pulled away from the guide plate 2. The feather 124 is pressed together and the rear wall 1213 lies with the extension 12132 on the deflection part 82, see also Fig. 10.

    In Fig.12 sind die Andruckelemente 12 als elastische Vollzylinder 120 ausgeführt, die zwischen Klemmbacken 1205 quer zur Transport-richtung eingespannt sind. Die Klemmbacken 1205 sind quer auf dem Transportband 1 befestigt. Der Brief 3 ist zwischen der Stirnfläche 1204 des Vollzylinders 120 und der Führungsplatte 2 eingespannt. In den Umlenkbereichen des Transportbandes 1 werden die Klemmbacken 1205 auf Grund der Krümmung des Transportbandes 1 gespreizt, so daß die Vollzylinder 120 dann lose zwischen den Klemmbacken 1205 liegen und leicht verschiebbar sind.In FIG. 12, the pressure elements 12 are elastic full cylinders 120 executed between the jaws 1205 transverse to the direction of transport are clamped. The jaws 1205 are across the Conveyor belt 1 attached. Letter 3 is between face 1204 of the full cylinder 120 and the guide plate 2 clamped. In the Deflection areas of the conveyor belt 1 are the jaws 1205 spread due to the curvature of the conveyor belt 1, see above that the solid cylinder 120 then loosely between the jaws 1205 lie and are easy to move.

    Gemäß Fig.13 wird der vordere Umlenkbereich des Tansportbandes 1 von einem Käfig 83 umfaßt, der einerseits ein Herausfallen der Vollzylinder 120 aus den Klemmbacken 1205 verhindert und andererseits als Auslenkelement 8 ausgebildet ist.
    Zu diesem Zweck umgibt der Käfig 83 das Transportband 1 ab dem Wendepunkt so eng, daß die Vollzylinder 120 zwischen Transportband 1 und Innendeckwand 830 des Käfiges 83 kraftschlüssig anliegen. Darüber hinaus weist ein Teil der Innendeckwand 830 ein Zahnprofil 8301 auf, das schräg in Richtung Führungsplatte 2 und diagonal mit der Transportrichtung verläuft. Auf Grund des Kraftschlusses zwischen Vollzylinder 120 und Innendeckwand 830 beziehungsweise Zahnprofil 8301 wird ein elastisches Gegenprofil in die Mantelfläche 1206 des Vollzylinders 120 eingeprägt und derselbe quer zur Transport-richtung zur Führungsplatte 2 herausgedreht. Kraftschluß und Zahnprofil 8301 sind so bemessen, daß der Vollzylinder 120 nur so weit nach außen kommt, daß zwischen Stirnfläche 1204 des Voll-zylinders 120 und der Führungsplatte 2 ein geringer Abstand besteht und ein dünner Brief 3 gerade noch erfaßt wird. Bei dicken Briefen 3 tritt ein Rutscheffekt ein.
    According to FIG. 13, the front deflection area of the conveyor belt 1 is surrounded by a cage 83, which on the one hand prevents the full cylinders 120 from falling out of the clamping jaws 1205 and on the other hand is designed as a deflection element 8.
    For this purpose, the cage 83 surrounds the conveyor belt 1 from the turning point so tightly that the full cylinders 120 rest tightly between the conveyor belt 1 and the inner top wall 830 of the cage 83. In addition, part of the inner top wall 830 has a tooth profile 8301, which runs obliquely in the direction of the guide plate 2 and diagonally with the transport direction. Due to the frictional connection between the solid cylinder 120 and the inner cover wall 830 or tooth profile 8301, an elastic counter-profile is embossed into the outer surface 1206 of the solid cylinder 120 and is turned out transversely to the direction of transport to the guide plate 2. The frictional connection and tooth profile 8301 are dimensioned such that the full cylinder 120 only comes out so far that there is a small distance between the end face 1204 of the full cylinder 120 and the guide plate 2 and a thin letter 3 is just being grasped. In the case of thick letters 3, a slip effect occurs.

    In Fig.14 sind die Verhältnisse für den hinteren Umlenkbereich des Transportbandes 1 ersichtlich. Hier umfaßt ein Käfig 84 das Transportband 1, der gleichfalls das Herausfallen der Vollzylinder 120 aus den Klemmbacken 1205 verhindert und andererseits als Auslenkelement ausgebildet ist. Zu diesem Zweck ist die der Führungsplatte 2 benachbarte Innenseitenwand 841 schräg nach außen geführt.
    Die losen Vollzylinder 120 gleiten mit ihrer Stirnfläche 1204 an der Innenseitenwand 841 entlang und werden so weit nach außen gedrückt, daß der dickste zugelassene Brief 3 bequem zwischen Stirnfläche 1204 und Führungsplatte 2 paßt und somit freigegeben wird.
    Die Innendeckwand 840 des Käfiges 84 hat zum Transportband 1 einen so großen Abstand, daß eine lose Lage der Vollzylinder 120 gesichert ist. Der Käfig 84 umfaßt das Transportband 1 so weit, daß die Vollzylinder 120 bei Verlassen des Umlenkbereiches wieder zwischen den Klemmbacken 1205 eingespannt sind.
    14 shows the conditions for the rear deflection area of the conveyor belt 1. Here, a cage 84 comprises the conveyor belt 1, which likewise prevents the full cylinders 120 from falling out of the clamping jaws 1205 and, on the other hand, is designed as a deflection element. For this purpose, the inner side wall 841 adjacent to the guide plate 2 is guided obliquely outwards.
    The loose full cylinders 120 slide with their end face 1204 along the inner side wall 841 and are pushed out so far that the thickest approved letter 3 fits comfortably between the end face 1204 and the guide plate 2 and is thus released.
    The inner cover wall 840 of the cage 84 is so far away from the conveyor belt 1 that a loose position of the solid cylinder 120 is secured. The cage 84 encompasses the conveyor belt 1 so far that the full cylinders 120 are clamped again between the clamping jaws 1205 when they leave the deflection area.

    Verwendete BezugszeichenReference symbols used

    11
    TransportbandConveyor belt
    1010th
    Riemen, ZahnriemenBelts, timing belts
    100100
    Löcher im Transportband beziehungsweise Zahnriemen zur Befestigung der Andruckelemente12Holes in the conveyor belt or toothed belt for fastening the pressure elements 12
    1111
    Walze, ZahnwalzeRoller, tooth roller
    1212th
    Andruckelement/e, Klemmlasche/nPressure element (s), clamping strap (s)
    120120
    Vollzylinder, elastischFull cylinder, elastic
    12011201
    abgewandtes Ende der Klemmlasche 12opposite end of the clamping tab 12
    12021202
    vorderer Teil der Klemmlasche 12front part of the clamping tab 12
    12031203
    abgewandte Schenkel der U-förmigen Klemmlasche 12opposite leg of the U-shaped clamping tab 12
    12041204
    Stirnfläche der Vollzylinder 120End face of the solid cylinder 120
    12051205
    Klemmbacken für Vollzylinder 120Clamping jaws for full cylinder 120
    12061206
    Mantelfläche des Vollzylinders 120Shell surface of the full cylinder 120
    121121
    Bügel als Andruckelement 12Bracket as pressure element 12
    12111211
    Andruckplatte beziehungsweise Vorderwand des Bügels 121Pressure plate or front wall of the Temple 121
    1211112111
    Bohrung in der Andruckplatte 1211Hole in the pressure plate 1211
    12121212
    Deckplatte des Bügels 121Cover plate of bracket 121
    12131213
    Rückwand des Bügels 121Rear wall of bracket 121
    1213112131
    Bohrung in der Rückwand 1213Hole in the rear wall 1213
    1213212132
    Fortsatz an der Rückwand 1213Extension on the rear wall 1213
    122122
    Reibbelag auf der Andruckplatte 1211Friction lining on the pressure plate 1211
    123123
    Achseaxis
    124124
    U-förmige FederU-shaped spring
    12401240
    Mittelteil der Feder 124Middle part of spring 124
    1240112401
    Bohrung im Mittelteil 1240Hole in the middle part 1240
    12411241
    freie Schenkel der Feder 124free legs of spring 124
    1241112411
    Enden der freien Schenkel 1241Ends of the free legs 1241
    125125
    LagerbodenWarehouse floor
    12511251
    Gleitlager am Lagerboden 125 für Achse 123Plain bearing on bearing base 125 for axis 123
    12521252
    Rückwand des Lagerbodens 125Rear wall of the floor 125
    1252112521
    Ausnehmungen in der Rückwand 1252 für U-förmige Feder 124Recesses in the rear wall 1252 for U-shaped Spring 124
    12531253
    Ausnehmung an der Unterseite des Lagerbodens 125Recess on the underside of the bearing base 125
    126126
    Gegenplatte zum Lagerboden 125Counter plate to the bearing base 125
    12611261
    Zapfen an der Gegenplatte 126Pin on the counter plate 126
    22nd
    FührungsplatteGuide plate
    2020th
    Einsatz in der Führungsplatte 2Use in the guide plate 2
    201201
    erste Ausnehmung im Einsatz 20first recess in use 20
    202202
    zweite Ausnehmung im Einsatz 20second recess in use 20
    203203
    Gleitschienen am Einsatz 20Slide rails on insert 20
    204204
    Bereich vor der/den Ausnehmung/en 201, 202Area in front of the recess (es) 201, 202
    205205
    Bereich nach der/den Ausnehmung/en 201, 202Area after the recess (es) 201, 202
    206206
    Öffnung für den Sensor 7 im Einsatz 20Opening for sensor 7 in use 20
    2121
    erste Ausnehmung in Führungsplatte 2 für Tintendruckkopf 4first recess in guide plate 2 for Ink printhead 4
    2222
    zweite Ausnehmung in Führungsplatte für Tintendruckkopf 4second recess in guide plate for Ink printhead 4
    2323
    Gleitschienen an der Führungsplatte 2Slide rails on the guide plate 2
    231231
    Gleitschienen nach den Ausnehmungen21, 22Slide rails after the recesses21, 22
    2424th
    Bereich vor der/den Ausnehmung/en 21, 22Area in front of the recess (es) 21, 22
    2525th
    Bereich nach der/den Ausnehmung/en 21, 22Area after the recess (es) 21, 22
    2626
    langer Schenkel der L-förmigen Führungsplatte 2long leg of the L-shaped guide plate 2
    2727
    kurzer Schenkel der L-förmigen Führungsplatte 2short leg of the L-shaped guide plate 2
    33rd
    Druckträger, BriefPrint carrier, letter
    3131
    Kante, Auflagekante des Druckträgers 3Edge, contact edge of the print carrier 3
    3232
    Fläche, Anlagefläche des Druckträgers an der Führungsplatte 2Surface, contact surface of the print carrier on the Guide plate 2
    44th
    TintendruckkopfInk printhead
    4040
    Düsenfläche/ebene des Tintendruckkopfes 4Nozzle surface / level of the ink print head 4
    55
    InkrementalgeberIncremental encoder
    66
    FotozellePhotocell
    77
    Sensor für Briefanfangserkennung beziehungsweise zur DruckauslösungSensor for letter start detection or for Pressure release
    88th
    Auslenkelement beziehungsweise KulisseDeflection element or backdrop
    8181
    Einlenkungsteil der Kulisse 8Inlet part of the backdrop 8
    8282
    Auslenkungsteil der Kulisse 8Deflection part of the backdrop 8
    8383
    Käfig im Einlenkungsbereich der Vollzylinder 120Cage in the deflection area of the solid cylinder 120
    830830
    Innendeckwand des Käfigs 83 Inner top wall of cage 83
    83018301
    Zahnprofil in der Innendeckwand 830Tooth profile in the inner top wall 830
    8484
    Käfig im Auslenkungsbereich der Vollzylinder 120Cage in the deflection area of the solid cylinder 120
    840840
    Innendeckwand des Käfigs 84Cage 84 interior top wall
    841841
    Innenseitenwand des Käfigs 84Inner side wall of the cage 84
    aa
    Abstand zwischen Gleitschienen 231 beziehungsweise 203 im Bereich 25 beziehungsweise 205Distance between slide rails 231 or 203 in the range 25 or 205
    bb
    DruckbildbreitePrint image width
    dd
    Dicke der Gleitschienen 23, 231, 203 beziehungsweise Rückversatz des Bereiches 25, 205Thickness of the slide rails 23, 231, 203 respectively Area 25, 205 set back
    ww
    Wölbung des Druckträgers 3 im bedruckten BereichCurvature of the print carrier 3 in the printed area
    αα
    Neigungswinkel der Führungsplatte aus dem LotAngle of inclination of the guide plate from the plumb line

    Claims (33)

    1. An arrangement for printing a print medium (3) standing on an edge, in particular a letter in franking and/or addressing machines, wherein, during the transport and printing process, said print medium is guided carried on the edge (31), having a guide plate (2) inclined in relation to the vertical for slidably bearing said print medium and a recessed area (21, 22) for a printing device (4) arranged on the side of the guide plate opposite to said print medium, wherein means (1) are provided for transmitting a feeding force to the print medium (3) for feeding it in transport direction along guide plate (2);
      characterised in
      that the printing device is an ink-print arrangement with at least one ink-print head (4);
      that there are provided pressure elements (12) that are directed against guide plate (2) and movable towards and away from it for pressing the print medium (3) against guide plate (2) in such manner that, during the transport and printing process, the print medium (3) is non-positively held by the pressure elements (12) on its side opposite to guide plate (2);
      that the recessed area comprises at least one opening (21, 22) and that the area (25) of the guide plate (2) that follows the opening (21, 22) in transport direction towards the downstream end is formed in such manner that the print medium (3) lies bare at that place.
    2. An arrangement for printing a print medium (3) standing on an edge, in particular a letter in franking and/or addressing machines, wherein, during the transport and printing process, said print medium is guided carried on the edge (31), having a guide plate (2) inclined in relation to the vertical for slidably bearing said print medium, a recessed area (21, 22) for a printing device (4) arranged on the side of the guide plate opposite to said print medium, wherein a circulating conveyor belt (1) is provided for transmitting a feeding force to the print medium (3) for feeding it in transport direction along guide plate (2);
      characterised in
      that the printing device is an ink-print arrangement with at least one ink-print head (4);
      that, on the conveyor belt (1), there are arranged pressure elements (12) directed against guide plate (2) and movable towards and away from it for pressing the print medium (3) against the guide plate (2) in such manner that, during the transport and printing process, the print medium (3) is non-positively held by the pressure elements (12) on its side opposite to guide plate (2);
      that the recessed area comprises at least one opening (21, 22) and that the area (25) of the guide plate (2) that follows the opening (21, 22) in transport direction towards the downstream end is formed in such manner that the print medium (3) lies bare at that place.
    3. An arrangement according to Claim 1 or 2,characterised in that the area (25) of guide plate (2) following opening (21, 22) in transport direction towards the downstream end is recessed in relation to the bearing surfaces for the print medium (3).
    4. An arrangement according to Claim 1 or 2, characterised in that the recessed area contains at least one opening (21, 22) that is open in transport direction towards the downstream end.
    5. An arrangement according to Claim 1 or 2, characterised in that guide plate (2) is a plane plate provided with slide bars (23, 231) in transport direction on which the print medium (3) lies with one face (32).
    6. An arrangement according to Claims 2 and 5, characterised in that the print medium (3) stands with one edge (31) on the conveyor belt (1).
    7. An arrangement according to Claims 1 or 2, characterised in that guide plate (2) is an L-shaped bent plate, the print medium (3) standing with one edge (31) on its short side (27) and said print medium (3) lying with one surface (32) on its long side (23) provided with slide bars (23).
    8. An arrangement according to Claims 1 to 5, 7, characterised in that, in the area (25) following the opening (21, 22), the slide bars (23, 231) are spaced at a distance (a) that is bigger than the width of the print image (b) and have a thickness (d) that is bigger than the biggest occurring bulging (w) of the print medium (3) in the printed area.
    9. An arrangement according to Claim 1 or 2, characterised in that guide plate (2) is inclined about 18 degrees from the vertical.
    10. An arrangement according to Claims 1, 2, 3, 5, 7 to 8, characterised in
      that guide plate (2) is provided with an insert (20) made of stainless metal that has at least one opening (201, 202) and moulded slide bars (203); and
      that the area (204) before the opening (21, 201, 22, 202), the nozzle level (40) of the ink print head (4) and the following area (25, 205) are consecutively recessed in relation to one another.
    11. An arrangement according to Claim 2, characterised in that the pressure elements (12) are tape-shaped clamping lugs made of elastic material that are fixed with their end (1201) opposite to guide plate (2) on the conveyor belt (1) crosswise to the transport direction.
    12. An arrangement according to Claim 11, characterised in that the clamping lugs (12) are fixed on end with a deflection opposite to the transport direction.
    13. An arrangement according to Claim 11, characterised in that the clamping lugs (12) are fixed in a flat position with a deflection away from conveyor belt (1).
    14. An arrangement according to Claim 2, characterised in that the pressure elements (12) are ring-shaped clamping lugs made of elastic material that are fixed on end with a small section of a ring edge on the conveyor belt (1) with a deflection crosswise to the transport direction.
    15. An arrangement according to Claim 14, characterised in that the fixing section is located almost in the middle of the conveyor belt (1).
    16. An arrangement according to Claim 14, characterised in that the fixing section is the section with the biggest distance to guide plate (2).
    17. An arrangement according to Claim 2, characterised in that the pressure elements (12) are U-shaped clamping lugs made of elastic material that are fixed on end with their sides (1203) opposite to guide plate (2) on the conveyor belt (1) crosswise to the transport direction.
    18. An arrangement according to Claim 17, characterised in that the semicircular section of the U-shaped clamping lugs (12) is arranged on end on the conveyor belt (1) with a deflection opposite to the transport direction.
    19. An arrangement according to Claim 2,characterised in
      that the pressure element (12) is a flexibly borne clamp (121) having a pressure plate (1211), a cover plate (1212), a back wall (1213) as well as an axle (123) fixed between pressure plate (12) and back wall (1213); and
      that axle (123) is borne, crosswise to the direction of transport, in a plain bearing (1251) connected with a bearing base (125) that is releasably fixed on the conveyor belt (1) by means of a counter-plate (126) with pegs (1261).
    20. An arrangement according to Claim 19, characterised in
      that the outside of pressure plate (1211) is partially provided with a friction covering (122); and
      that, behind the pressure plate (1211), there is arranged a U-shaped spring (124) that is fixed on axle (123) with its centre part (1240) and on the bearing base (125) with its free sides (1241).
    21. An arrangement according to Claims 19 and 20, characterised in
      that the free sides (1241) of spring (124) are positively fixed in recesses (12521) of the back wall (1252) of bearing base (125); and
      that the ends (12411) of the sides (1241) slightly project from the back wall (1252) and serve as a shock-absorbed stopper for the back wall (1213) of the clamp (121).
    22. An arrangement according to Claim 2, characterised in that the pressure elements (12) are elastic solid cylinders (120) that are releasably, non-positively held crosswise to the transport direction in clamping jaws (1205) that are fixed to the conveyor belt (1).
    23. An arrangement according to Claims 11, 14, 17, 19 or 22, characterised in that either rubber or a polyurethane material is used as elastic material for the clamping lugs (12), the U-shaped spring (124), the solid cylinders (120) and the clamping jaws (1205).
    24. An arrangement according to Claim 2, characterised in that the circulating conveyor belt (1) comprises a toothed belt (10) and two toothed rollers (11) of which the driving roller (11) is arranged near the printing area and is placed, together with a connected incremental transmitter (5), on an axle.
    25. An arrangement according to Claims 19, 23 and 24, characterised in that, in order to allow for a replaceable fixing of the pressure elements (12), the toothed belt (10) is partially provided with holes (100) in the area of the tooth spaces.
    26. An arrangement according to Claims 2 and 10 to 17, characterised in that the pressure elements (12) are fixed to conveyor belt (1) by means of gluing or welding.
    27. An arrangement according to Claims 19 and 24 to 25, characterised in
      that the counter-plate (126) is inserted into a tooth space and projects through the holes (100) with formed mushroom-shaped pegs (1261); and
      that the bearing base (125) is provided with a T-shaped recess (1253) on its bottom with which it is slipped on the pegs (1261); and that the toothed rollers (11) are adapted to counter-plate (126).
    28. An arrangement according to Claim 2, characterised in that, outside the conveyor belt (1), there are provided deflection elements (8) in the circulation path of the pressure elements (12) that serve to provide a maximum deflection of the pressure elements (12) in the entrance and exit areas of the print media (3) and a release them in the remaining area.
    29. An arrangement according to Claims 19 and 28, characterised in
      that the individual deflection element (8) consists of a plate-shaped member that is continuously cranked outward towards the beginning or towards the end, respectively; and
      that on the back wall (1213) of bow (121), there is formed an extension (12132) that can be brought in an active connection with the deflection element (8).
    30. An arrangement according to Claims 22 and 28, c h a r a c t e rised in characterised in
      that, in its front turning area, the conveyor belt (1) is surrounded by a cage (83) the internal cover wall (830) of which is partially provided with a toothed profile (8301) running at an angle in direction towards the guide plate (2) and diagonally to the transport direction, the solid cylinders (120) being non-positively guided between said toothed profile and the conveyor belt (1); and
      that, in its rear turning area, the conveyor belt (1) is surrounded by a cage (84) the internal side wall (841) adjacent to guide plate (2) of which runs obliquely to the outside away from guide plate (2) and that the solid cylinders (120) abut with their face (1204) on the internal side wall (841).
    31. An arrangement according to Claim 1, 2 or 10, characterised in that an ink-print head (4) is permanently assigned to each recess (21, 201, 22, 202).
    32. An arrangement according to Claim 1, 2 or 8, characterised in that a joint height-adjustable ink-print head (4) is assigned to the two recesses (21, 201, 22, 202).
    33. An arrangement according to Claim 1, characterised in that the pressure elements (12) are flexibly borne driven rollers.
    EP96250285A 1996-01-31 1996-12-09 Device for printing a printing support standing on an edge Expired - Lifetime EP0788073B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    DE1996105015 DE19605015C1 (en) 1996-01-31 1996-01-31 Device for printing on print carrier standing on edge e.g. letter in franking or addressing machine
    DE19605015 1996-01-31
    DE19645363 1996-10-25
    DE19645363A DE19645363C1 (en) 1996-01-31 1996-10-25 Device for printing a print carrier standing on an edge

    Publications (3)

    Publication Number Publication Date
    EP0788073A2 EP0788073A2 (en) 1997-08-06
    EP0788073A3 EP0788073A3 (en) 1999-02-03
    EP0788073B1 true EP0788073B1 (en) 2001-08-29

    Family

    ID=26022814

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96250285A Expired - Lifetime EP0788073B1 (en) 1996-01-31 1996-12-09 Device for printing a printing support standing on an edge

    Country Status (3)

    Country Link
    US (2) US5949444A (en)
    EP (1) EP0788073B1 (en)
    DE (2) DE19645363C1 (en)

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    Also Published As

    Publication number Publication date
    DE59607581D1 (en) 2001-10-04
    DE19645363C1 (en) 1998-01-22
    EP0788073A2 (en) 1997-08-06
    US5949444A (en) 1999-09-07
    US6296339B1 (en) 2001-10-02
    EP0788073A3 (en) 1999-02-03

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