EP1278641B1 - Printing device - Google Patents

Printing device Download PDF

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Publication number
EP1278641B1
EP1278641B1 EP01911763A EP01911763A EP1278641B1 EP 1278641 B1 EP1278641 B1 EP 1278641B1 EP 01911763 A EP01911763 A EP 01911763A EP 01911763 A EP01911763 A EP 01911763A EP 1278641 B1 EP1278641 B1 EP 1278641B1
Authority
EP
European Patent Office
Prior art keywords
accordance
roller
mounting member
transport roller
support member
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
EP01911763A
Other languages
German (de)
French (fr)
Other versions
EP1278641A1 (en
Inventor
Jürgen Bernhard
Hans Michael Eppler
Willi Sautter
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.)
Bizerba SE and Co KG
Original Assignee
Bizerba SE and Co KG
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
Application filed by Bizerba SE and Co KG filed Critical Bizerba SE and Co KG
Publication of EP1278641A1 publication Critical patent/EP1278641A1/en
Application granted granted Critical
Publication of EP1278641B1 publication Critical patent/EP1278641B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/316—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/312—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print pressure adjustment mechanisms, e.g. pressure-on-the paper mechanisms

Definitions

  • the invention relates to a printing device for printing a printing material in roll form, in particular label and / or receipt rolls, with a print head unit and a printing material transport device.
  • the functional elements coming into contact with the printing material web during transport are the printing device, in particular printhead, transport rollers, including pressure roller, peel edge and peel-off, exposed to high contamination by paper abrasion and stuck adhesive residues. Therefore, it is necessary for functional reasons to clean these parts in relatively short intervals. In addition, these parts are also susceptible to wear, so that after a certain service life an exchange is necessary.
  • a printer in which a thermal print head with a fixedly connected fixing part forms a unit which is held in position by means of a permanent magnet.
  • a permanent magnet To replace the printhead in case of failure or for cleaning this can be disassembled without loosening screws, ie without tools.
  • transport rollers for the printing material and the peel edge are not removable without tools and not without readjustments of the same and difficult to access for cleaning.
  • Object of the present invention is to be able to easily exchange with the Betikmaterialbahn coming in contact parts of the transport device of the freely accessible insertion side of the web, without requiring readjustment.
  • a particularly easy to implement and functionally excellent embodiment of the guide elements of the holder and the rigid support is in the form of pins and matching holes on.
  • the pins may optionally be provided on the carrier or the holder or on the carrier and holder, wherein the holder or the carrier then has in each case the matching holes to the pin.
  • the holder may be rod-shaped or plate-shaped.
  • a particularly preferred embodiment of the holder is a guide plug part, which is guided on the rigid carrier in a form-fitting manner perpendicular to the plane of the housing plate displaceable.
  • the guide is designed on the carrier so that the guide plug can be moved from a first operating position to a second inoperative position in which the guide plug is still held on the carrier, the transport roller is released for service / exchange.
  • the guide of the guide plug part can in principle form the guide element on the part of the carrier and the sliding in the guide portion of the guide plug part, the complementary guide element of the holder.
  • the storage of the transport roller can in principle be designed so that the ends of the transport roller bearing bushes, engage in the journals of the housing board and the bracket. However, after the transport roller is a wearing part, this is preferably provided with journals at their ends, which can then be used in bearing bushes on the side of the housing board and the holder.
  • the holder in particular also in the form of the guide plug part, is fixed in the operating position by means of a catch mounted on the rigid carrier. Unlocking the catch allows a particularly simple release and removal of the holder from the operating position.
  • the releasably detachable and removable guide plug advantageously allows for easy removal of the transport roller and any parts of the transport device from the printer without tools for cleaning or replacement. Another advantage is that the disassembly and assembly of the parts to be cleaned is done from the same side of the printer as the insertion of the roll to be printed with the Betigmaterialbahn.
  • This side of the usually completely enclosed with a printer housing printer must be accessible for inserting the receipt or label roll anyway via a housing door or flap. Thus, no further housing parts are to dismantle the parts to be cleaned.
  • all three described label rolls or types of receipt rolls can be processed, in each case optionally with thermal coating or without thermal coating in conjunction with a ribbon unit or optionally with other printing processes, such as inkjet processes.
  • Changing the label or receipt roll with the insertion of the printing material web in the printer is very simple and user-friendly due to the self-supporting arrangement of the print head unit and printing material transport device on the housing board with a single handle operation.
  • this may be simultaneously connected to a lifting of the thermal print head with simultaneous pivoting away a castor.
  • extruded profile as a rigid support for the printing material transport device is in its embodiment according to the invention a particularly advantageous and cost-effective solution.
  • Several functions can be practically realized by the extrusion die and its molding channels, such as attachment to the housing board, the chiefszentri für Rastung the holder (and possibly the leadership of the guide plug) and thus the storage of transport pressure roller and take-off roller and the peel, the attachment and Storage of a light barrier for the scanning of the printing material web and the guidance and attachment of a deflector plate for the "linerless" -type label rolls.
  • roller widths are made even easier by an additional adjustment of the peel-off roller. This ensures that, regardless of the roll width, the printing material web always runs with the housing board facing edge along the same stop, so that when inserting a roll with a changed width no adjustment is required.
  • a slidable mounting of the light barrier in a mold channel of the extruded profile brings the advantage of adjustability over at least half max. Belichmaterialbahnbreite and thus the possibility of adapting the position of the light barrier to difficult to be scanned labels whose outer shape deviates from the rectangular shape. For example, round labels can be processed, the scanning of which should ideally take place approximately in the middle of the label diameter.
  • the universally applicable printing material transport device brings through their structure with easily exchangeable parts and subassemblies also the advantage of easy up or dismantling in the assembly of the printer production or the user.
  • the printer as a simple BonstMapdrucker the light barrier, puller roller, pivoting roller and take-up roll are simply omitted in the same basic concept of Aubaus and retrofitted later if desired.
  • the printer is also advantageously for processing "linerless" -tickets.
  • the only functional requirement is a pressure roller with non-stick surface coating, an additional deflector, which prevents the wrapping of the sticky Betikmaterialbahn to the transport / pressure roller and a non-stick coated Abweiserblech for covering the upper extruded profile surface required.
  • printer 1 and 2A and 2B show a printer 1 for printing a label or receipt roll web - hereinafter referred to as printing material web 2 - consisting of a printing material transport device 3 and a print head unit 4, both one-sided and self-supporting on the roller side 5 of a housing board 6 of Printer 1 are attached.
  • the housing board 6 forms part of the simplification of the figures Not shown printer housing which surrounds the printer 1 in a known manner on all sides and has a housing door or flap for loading the label or receipt roll, and an outlet opening for the printed printing material.
  • the drive 7 for the printing material transport device 3 is arranged on the opposite, the roller side 5 facing away from the transmission side 8 of the housing board 6. Also, not shown control of the printer is preferably on this not accessible to the operator transmission side. 8
  • the printhead unit 4 is constructed according to the known prior art and therefore not described in detail.
  • a thermal print head 10 is pivotally mounted about a pivot axis 11.
  • the thermal print head 10 can be converted from a in Fig. 2A and 2B shown in full strokes printing material insertion position 13 in a print position 14 shown in phantom.
  • the lever mechanism leads, as is known, a resilient overstroke, so that the thermal print head 10 rests with a corresponding spring force with its print line on a pressure roller 15 of the printing material transport device 3.
  • thermo-heating elements 16 forming a line of printing in a known manner lie parallel to the pressure roller 15 on the surface of the printing material web 2, which is carried out in the direction of arrow 17 between the driven pressure roller 15 acting as a transport roller and the stationary thermal printing head 10.
  • the printing head 18 facing the thermal print head 10 of the printing material web 2 is provided with a thermosensitive layer, the control of the entire width of the Betikmaterialbahn 2 covering thermal heating 16 as a result of generated higher temperature turns into another color and thus generates a print.
  • the printer can also be used as a thermal transfer printer by adding a driven ribbon.
  • This pressure principle is also known prior art. Therefore, the representation of the ribbon and its drive was omitted.
  • an additional ribbon between the thermal print head 10 and the printing material web 2 is moved synchronously and transfer 16 color from the ink ribbon on the surface of the printing material web 2 when driving the thermal heating 16, which has no thermosensitive layer in this printing technology.
  • the design of the printing material transpörtvoriques 3 and the printhead unit 4 remain basically the same when switching from direct thermal printing to thermal transfer printing.
  • the printing material web 2 a loosely mounted on a donor mandrel 19 and with two stops 20 laterally fixed receipt or label roll 21 is deflected by a guide roller 22, then runs between the spaced apart printhead unit 4 and the printing material transport device 3 and then for printing between the thermal print head 10 and the pressure roller 15 therethrough.
  • the driven pressure roller 15 transports the printing material web 2 further in the direction of arrow 17 to an outlet opening of the printer housing, not shown, on which the printing document is separated either manually via a knife edge or mechanically by means of a driven cutting device or outside the printer in an additional unit, not shown again a roll is wound up.
  • This can also be on a carrier web glued self-adhesive labels that leak as a complete strip from the printer and will be separated from the carrier web at a later date.
  • the self-adhesive labels are adhered in a known manner either adjacent to one another or at a distance from one another on the side of a carrier web 23 facing the thermal print head 10.
  • the labels together with the carrier web 23 form the printing material web 2 'shown in FIG. 2A.
  • the course of this web is identical to the roller type a) up to the pressure roller 15.
  • the carrier web 23 is deflected sharply about a stationary peeling edge 24. This causes a separation of the labels from the carrier web 23, which are donated after the peel edge 24 further in the direction of arrow 17 through an outlet opening, not shown, in the printer housing.
  • the peel force required to peel off the labels is generated via a pair of rollers disposed after the peel edge 24, consisting of a driven peel roller 25 and a pivot roller 26.
  • the carrier web 23 is then followed by a likewise driven Aufwickeldorn 27 wound up.
  • To insert a new label roll 21 of the thermal print head 10 is pivoted by means of handle 12 in the insertion position 13.
  • This change of the handle 12 causes simultaneously via a lever mechanism, not shown, the pivoting away a pivot lever 28 with the cantilever mounted therein pivot roller 26 of the dot-dash line in Fig. 2 printing position in the insertion position shown with full strokes to facilitate the insertion of the label web 2 '.
  • the pressure roller 15 and the Abziehwalze 25 are to improve the transport properties with an elastic coating 68 from Rubber or plastic provided.
  • the "linerless” label web 2 " is wound inwards with the adhesive surface on the label roll 21.
  • the outer side 18 to be printed, as known per se, is provided with an additional non-stick coating in order to separate the turns resting on the supply roll 21 from one another
  • the course of the label web 2 "through the printer and the output of the print document is the same as in the roll type a).
  • the pressure roller 15 thus simultaneously forms the transport roller of the "linerless" label web 2 ".
  • FIGS. 3 to 5 the printing material transport device 3 according to the invention is shown in more detail.
  • the drive wheel 32 is connected to the drive motor 7, for example via a toothed belt, not shown.
  • the peeling-off roller 25 is mounted in the same way as the pressure roller 15 with its left-hand bearing journal 33 in rotationally positive locking and concentric with the drive wheel 34 in the housing plate 6 by means of ball bearings 59.
  • a rigid carrier 35 formed of an extruded aluminum profile is fixed perpendicular to the housing plate 6 on the roller side 5 of the housing plate 6, which has two dovetail grooves 36 on its underside for receiving a guide plug 37.
  • the guide plug part 37 likewise has two projections 38 fitting in the grooves 36 and is thus held displaceable perpendicular to the housing plate 6 in the rigid carrier 35.
  • a 90 ° angled leg 39 is formed and provided with two centering holes 40 in which the guide plug member 37 is fixed during insertion into its functional position in two centering pins 41.
  • the centering pins 41 are pressed into circular-segment-shaped mold channels 42 of the extruded profile 35.
  • a molded part 44 is attached made of plastic, on which a resilient detent 45 is formed, which engages during insertion of the guide plug 37 in the functional position in a recess 46 of the leg 39.
  • peeling roller 25 On the leg 39 are aligned with the pressure roller 15 and peeling roller 25 has two bearing bushes 47, 48 which receive the storage for the right bearing pin 49 of the pressure roller 15 and the right bearing pin 50 of the peeling roller 25.
  • the guide plug member 37 By pressing on the easily accessible resilient catch 45, the guide plug member 37 can be easily unlocked and remove in the vertical direction to the housing board 6. Subsequently, the pressure roller 15 and the peeling roller 25 can be taken out in the same direction, e.g. for cleaning or in exchange with a new roller.
  • insertion chamfers 51 are respectively mounted on both bearing journals 29, 49 and 33 ,. Also, the two projections 38 for easy insertion of the guide plug 37 are provided with chamfers 52.
  • a radius-shaped Anformung 53 is bent up below the pressure roller 15, at the edge of a straight tail, the so-called peel edge 24 is formed.
  • the so-called peel edge 24 is formed at the guide plug part 37.
  • the right bearing pin 50 is mounted in a fortified in the leg 39 of the guide sleeve 37 bearing bushing 48, which also secured axially as the bushing 47 by means of a lock washer 54 and by an additional, between Leg 39 and lock washer 54 clamped wave washer 55 is difficult to turn.
  • the bushing 48 has an eccentric to the central bore lying collar approach 58, so that the take-off roller 25 during rotation of the bearing bush 48 performs a slight pivoting movement about their left, designed as a ball bearing 59 in the housing board 6.
  • the printing material web 2, 2 'and 2 "passes through a forked light barrier 62 for scanning the labels on the carrier web 23 or for scanning pre-prints already present on the supply roll 21.
  • the scanning signals are read by the printer controller as is known Synchronization of the label outer contour or the existing forms used with the then to be printed by the thermal print head 10 print image.
  • a preferably hexagonal mold channel 63 is formed in the extruded profile 35, in which on the housing plate 6 facing away from the end of the extruded profile 35, a bearing bush 64 is pressed.
  • a fork light barrier body 65 is slidably mounted in the mold channel 63 on the sinker side of the extruded profile 35 and protrudes partially through an opening 66 of the board 6 in the gear chamber 8 into it.
  • the fork light barrier 62 can be adjusted transversely to the printing material web 2, 2 'or 2 "over a large adjustment range via an axially secured threaded spindle 67 in the bearing bush 64 and the housing plate 6. This is advantageous in particular when deviating from the rectangular shape Self-adhesive labels, eg round labels are processed, the sampling should ideally be made approximately in the middle of the label diameter.
  • the upper surface 69 of the extruded profile 35 must also be coated with non-stick, eg with PTFE
  • the upper surface 69 may be covered with an additional, non-stick-coated deflector plate, which may be fitted with two protrusions 38 matching the two mold channels 70 in the extruded profile 35, for example Abweiserblech can be inserted and then secured after assembly of the guide plug 37 between the housing plate 6 and leg 39.
  • the printing apparatus of the present invention is constructed and equipped can be processed by all the common label types of the same printing device without retooling.
  • a first designed for receipt paper printing device can be upgraded easily and without much effort for the printing of "linerless" label rolls or upgraded to the printer for carrier web labels.

Landscapes

  • Labeling Devices (AREA)
  • Handling Of Sheets (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Glass Compositions (AREA)
  • Noodles (AREA)
  • Seal Device For Vehicle (AREA)
  • Handling Of Cut Paper (AREA)
  • Advancing Webs (AREA)
  • Unwinding Webs (AREA)
  • Electronic Switches (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

The printing device comprises a print head unit, a transporting device for the printing material and a structural housing board on which the print head unit and the transporting device are mounted at one end in cantilevered manner and in a predetermined relationship relative to one another. The transporting device comprises a stiff support member which is rigidly connected to the housing board, a mounting member which extends substantially parallel relative to the housing board and is held on the stiff support member, and at least one transport roller for the transportation of the strip of printing material which is mounted at both ends. The stiff support member comprises connecting elements for releasably fixing th mounting member and also guide elements which co-operate with corresponding guide elements of the mounting member for exactly positioning the arrangement with reference to the support member. The first end of the transport roller is mounted at the housing board side and is releasably connected to a drive device and the second end of the transport roller is releasably mounted at the mounting member side.

Description

Die Erfindung betrifft eine Druckvorrichtung zum Bedrucken eines Bedruckmaterials in Rollenform, insbesondere Etiketten- und /oder Bonrollen, mit einer Druckkopfeinheit und einer Bedruckmaterial-Transportvorrichtung.The invention relates to a printing device for printing a printing material in roll form, in particular label and / or receipt rolls, with a print head unit and a printing material transport device.

Zweck der Druckvorrichtung (im folgenden auch Rollendrucker oder Drucker genannt) mit der Bedruckmaterial-Transportvorrichtung ist es, eine von einer Rolle abzuwickelnde und zu bedruckende Bonstreifen- oder Etikettenbahn oder dergleichen aus Papier oder Kunststoff durch den Rollendrucker zu transportieren und die bedruckte Bedruckmaterialbahn nach dem Bedrucken als Druckbeleg aus dem Drucker zur manuellen oder automatischen Abnahme auszugeben. Je nach Druckbeleg-Beschaffenheit gibt es unterschiedliche Rollenarten, die unterschiedliche Anforderungen an die Bedruckmaterial-Transportvorrichtung beim Transport durch den Drucker stellen. Die vorliegende Erfindung befasst sich hauptsächlich mit drei verschiedenen Rollenarten, die mit der erfindungsgemäßen Vorrichtung verarbeitet werden können:

  • Bon- oder Etikettenrollen mit auslaufender, nichtklebender Bedruckmaterialbahn.
  • Selbstklebeetikettenrollen mit Trägerbahn, wobei die Etiketten voneinander getrennt auf einer Trägerbahn aufgeklebt sind.
  • Selbstklebeetikettenrollen ohne Trägerbahn, sogenannte "Linerless"-Etikettenrollen, mit auslaufender, klebender Bedruckmaterialbahn.
Purpose of the printing device (hereinafter also called roll printer or printer) with the printing material transport device is to be handled by a roll and to be printed Bonstreifen- or label web or the like of paper or plastic through the roll printer and the printed Bedruckmaterialbahn after printing output as print document from the printer for manual or automatic acceptance. Depending on the printing document nature, there are different types of reels, which make different demands on the printing material transport device during transport through the printer. The present invention is primarily concerned with three different types of rollers that can be processed with the device according to the invention:
  • Bon or label rolls with leaking, non-adhesive printing material web.
  • Self-adhesive label rolls with carrier web, wherein the labels are glued separately from each other on a carrier web.
  • Self-adhesive label rolls without carrier web, so-called "linerless" label rolls, with leaking, adhesive printing material web.

Bei allen drei Materialbahn-Arten sind die mit der Bedruckmaterialbahn während des Transports in Berührung kommenden Funktionselemente der Druckvorrichtung, insbesondere Druckkopf, Transport-walzen, einschließlich Druckwalze, Abziehkante und Abziehwalze, einer hohen Verschmutzung durch Papierabrieb und hängenbleibende Klebstoffreste ausgesetzt. Deshalb ist es aus Funktionsgründen erforderlich, diese Teile in relativ kurzen Abständen zu reinigen. Außerdem sind diese Teile auch verschleißanfällig, so dass nach einer bestimmten Standzeit ein Austausch notwendig wird.In all three types of web material, the functional elements coming into contact with the printing material web during transport are the printing device, in particular printhead, transport rollers, including pressure roller, peel edge and peel-off, exposed to high contamination by paper abrasion and stuck adhesive residues. Therefore, it is necessary for functional reasons to clean these parts in relatively short intervals. In addition, these parts are also susceptible to wear, so that after a certain service life an exchange is necessary.

Aus dem US-Patent 5,709,486 ist eine Druckvorrichtung bekannt, bei der an einer Gehäuseplatine eine Druckkopfeinheit und eine Transportvorrichtung einseitig gehalten sind.From the U.S. Patent 5,709,486 a printing device is known in which a print head unit and a transport device are held on one side of a housing board.

Aus der WO 98/34791 A1 ist ein Drucker bekannt, bei dem ein Thermodruckkopf mit einem fest verbundenen Fixierteil eine Einheit bildet, die mittels eines Permanentmagneten in Position gehalten wird. Zum Auswechseln des Druckkopfs im Störungsfall oder zur Reinigung kann dieser ohne Lösen von Schrauben, d.h. ohne Werkzeuge demontiert werden.From the WO 98/34791 A1 For example, a printer is known in which a thermal print head with a fixedly connected fixing part forms a unit which is held in position by means of a permanent magnet. To replace the printhead in case of failure or for cleaning this can be disassembled without loosening screws, ie without tools.

Die Transportwalzen für das Bedruckmaterial und die Abziehkante sind allerdings nicht ohne Werkzeuge und nicht ohne Nachjustierungen derselben demontierbar und für eine Reinigung nur schwer zugänglich.However, the transport rollers for the printing material and the peel edge are not removable without tools and not without readjustments of the same and difficult to access for cleaning.

Aus US 4,900,175 ist eine Druckwalze bekannt, deren Hohlachse einseitig mit Aussparungen und einer Nut versehen ist. Diese wird in axialer Richtung in eine formschlüssig passende Mittelbohrung eines Antriebsrades eingeschoben und rastet in Funktionsstellung ein. Durch Entriegeln der Rastung kann die Druckwalze in axialer Richtung leicht demontiert werden.Out US 4,900,175 is known a pressure roller whose hollow axle is provided on one side with recesses and a groove. This is inserted in the axial direction in a form-fitting fitting central bore of a drive wheel and engages in functional position. By unlocking the detent, the pressure roller can be easily disassembled in the axial direction.

Aus der DE 40 04 930 A1 ist ein Drucker mit leicht zu demontierender Druckwalze bekannt. Die beidseitig im Druckerrahmen gelagerte Druckwalze kann nach Betätigung von zwei Entriegelungstasten senkrecht zur Druckwalzenachse aus dem Drucker entnommen werden. Problematisch ist, dass bei dieser Konstruktion das Austauschen bzw. Neueinlegen des Bedruckmaterials Schwierigkeiten bereitet und umständlich ist.From the DE 40 04 930 A1 is a printer with easy to dismantle pressure roller known. The pressure roller mounted on both sides in the printer frame can be removed from the printer perpendicular to the print roller axis after two release buttons have been actuated. The problem is that in this construction, the replacement or reinsertion of the printing material is difficult and cumbersome.

Wichtig hierfür ist eine frei zugängliche, offene Seite zum Einlegen der Bedruckmaterialbahn.Important for this is a freely accessible, open side for inserting the Bedruckmaterialbahn.

Aufgabe der vorliegenden Erfindung ist es, mit der Bedruckmaterialbahn in Berührung kommende Teile der Transportvorrichtung von der frei zugänglichen Einlegeseite der Bahn aus einfach austauschen zu können, ohne eine Nachjustierung zu erfordern.Object of the present invention is to be able to easily exchange with the Bedruckmaterialbahn coming in contact parts of the transport device of the freely accessible insertion side of the web, without requiring readjustment.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Druckvorrichtung zum Bedrucken eines Bedruckmaterials in Rollenform, insbesondere Etiketten- und/oder Bonrollen, mit

  • einer Druckkopfeinheit,
  • einer Transportvorrichtung für das Bedruckmaterial,
  • einer Gehäuseplatine, an welcher die Druckkopfeinheit und die Transportvorrichtung einseitig, freitragend und in vorgegebener Zuordnung zueinander gehalten sind,
  • wobei die Transportvorrichtung einen fest mit der Gehäuseplatine verbundenen steifen Träger, eine sich im wesentlichen parallel zur Gehäuseplatine erstreckende, am steifen Träger gehaltene Halterung und mindestens eine an beiden Enden gelagerte Transportwalze für den Transport des Bedruckmaterials umfasst,
  • wobei der steife Träger Verbindungselemente zur lösbaren Befestigung der Halterung sowie Führungselemente aufweist, welche mit korrespondierenden Führungselementen der Halterung zur exakten Positionierung derselben bezüglich dem Träger zusammenwirken, und wobei das erste Ende der Transportwalze auf Seiten der Gehäuseplatine gelagert und mit einer Antriebsvorrichtung lösbar verbunden ist und das zweite Ende der Transportwalze auf Seiten der Halterung lösbar gelagert ist.
This object is achieved by a printing device for printing a printing material in roll form, in particular label and / or receipt rolls, with
  • a printhead unit,
  • a transport device for the printing material,
  • a housing board on which the print head unit and the transport device are held on one side, cantilevered and in a predetermined association with each other,
  • the transport device comprising a rigid support fixedly connected to the housing board, a support extending substantially parallel to the housing board, held on the rigid support and at least one transport roller mounted on both ends for transporting the printing material,
  • the rigid support having connection elements for releasably securing the support and guide elements which cooperate with corresponding guide elements of the support for exact positioning thereof with respect to the support, and wherein the first end of the transport roller is mounted on the side of the housing board and releasably connected to a drive device and second end the transport roller is detachably mounted on the side of the holder.

Eine besonders einfach zu realisierende und dabei funktionell ausgezeichnete Ausführungsform für die Führungselemente der Halterung und des steifen Trägers bietet sich in Form von Zapfen und hierzu passenden Bohrungen an. Die Zapfen können wahlweise an dem Träger oder der Halterung oder auch an Träger und Halterung vorgesehen sein, wobei die Halterung bzw. der Träger dann jeweils die zu dem Zapfen passenden Bohrungen aufweist.A particularly easy to implement and functionally excellent embodiment of the guide elements of the holder and the rigid support is in the form of pins and matching holes on. The pins may optionally be provided on the carrier or the holder or on the carrier and holder, wherein the holder or the carrier then has in each case the matching holes to the pin.

Die Halterung kann stab- oder plattenförmig ausgebildet sein.The holder may be rod-shaped or plate-shaped.

Eine besonders bevorzugte Ausführungsform der Halterung stellt ein Führungssteckteil dar, welches an dem steifen Träger formschlüssig senkrecht zur Ebene der Gehäuseplatine verschieblich geführt ist. Bevorzugt wird die Führung am Träger so ausgelegt, dass das Führungssteckteil aus einer ersten Betriebslage in eine zweite Außerbetriebslage verschoben werden kann, in der das Führungssteckteil immer noch am Träger gehalten ist, die Transportwalze jedoch zum Service/Austausch freigegeben ist.A particularly preferred embodiment of the holder is a guide plug part, which is guided on the rigid carrier in a form-fitting manner perpendicular to the plane of the housing plate displaceable. Preferably, the guide is designed on the carrier so that the guide plug can be moved from a first operating position to a second inoperative position in which the guide plug is still held on the carrier, the transport roller is released for service / exchange.

Die Führung des Führungssteckteils kann im Prinzip das Führungselement seitens des Trägers bilden und der in der Führung gleitende Abschnitt des Führungssteckteils das komplementäre Führungselement der Halterung.The guide of the guide plug part can in principle form the guide element on the part of the carrier and the sliding in the guide portion of the guide plug part, the complementary guide element of the holder.

Einfacher in der Handhabung und in der Fertigung ist es jedoch, die Führung des Führungssteckteils mit großen Toleranzen zu fertigen und für die exakte Positionierung gesonderte Führungselemente vorzusehen, insbesondere in Form der zuvor beschriebenen Zapfen und dazu passenden Bohrungen.However, it is easier to handle and manufacture to manufacture the guide of the guide male part with large tolerances and to provide separate guide elements for the exact positioning, in particular in the form of the previously described pins and matching bores.

Die Lagerung der Transportwalze kann prinzipiell so ausgeführt sein, dass die Enden der Transportwalze Lagerbuchsen aufweisen, in die Lagerzapfen seitens der Gehäuseplatine und der Halterung eingreifen. Nachdem die Transportwalze allerdings ein Verschleißteil darstellt, wird diese bevorzugt mit Lagerzapfen an ihren Enden versehen, die dann in Lagerbuchsen auf Seiten der Gehäuseplatine und der Halterung eingesetzt werden können.The storage of the transport roller can in principle be designed so that the ends of the transport roller bearing bushes, engage in the journals of the housing board and the bracket. However, after the transport roller is a wearing part, this is preferably provided with journals at their ends, which can then be used in bearing bushes on the side of the housing board and the holder.

Bevorzugt wird die Halterung, insbesondere auch in Form des Führungssteckteils, mittels einer am steifen Träger angebrachten Raste in der Betriebsstellung fixiert. Das Entriegeln der Raste läßt ein besonders einfaches Lösen und Entfernen der Halterung aus der Betriebsstellung zu.Preferably, the holder, in particular also in the form of the guide plug part, is fixed in the operating position by means of a catch mounted on the rigid carrier. Unlocking the catch allows a particularly simple release and removal of the holder from the operating position.

Das mit einem Handgriff entriegelbare und abnehmbare Führungssteckteil (oder allgemein die Halterung) ermöglicht in vorteilhafter Weise das leichte Entnehmen der Transportwalze und aller mit der Bedruckmaterialbahn in Berührung kommenden Teile der Transportvorrichtung aus dem Drucker ohne Werkzeuge zum Zweck der Reinigung oder zum Austausch. Ein weiterer Vorteil ist, dass die Demontage und Montage der zu reinigenden Teile von der gleichen Seite des Druckers erfolgt, wie das Einlegen der zu bedruckenden Rolle mit der Bedruckmaterialbahn.The releasably detachable and removable guide plug (or generally the holder) advantageously allows for easy removal of the transport roller and any parts of the transport device from the printer without tools for cleaning or replacement. Another advantage is that the disassembly and assembly of the parts to be cleaned is done from the same side of the printer as the insertion of the roll to be printed with the Bedruckmaterialbahn.

Diese Seite des in der Regel mit einem Druckergehäuse ganz umschlossenen Druckers muß zum Einlegen der Bon- bzw. Etikettenrolle sowieso über eine Gehäusetür oder -klappe zugänglich sein. Somit sind zur Demontage der zu reinigenden Teile keine weiteren Gehäuseteile zu demontieren.This side of the usually completely enclosed with a printer housing printer must be accessible for inserting the receipt or label roll anyway via a housing door or flap. Thus, no further housing parts are to dismantle the parts to be cleaned.

Mit der erfindungsgemäßen Druckerausführung lassen sich alle drei beschriebenen Etikettenrollen bzw. Bonrollenarten verarbeiten und zwar jeweils wahlweise mit Thermobeschichtung, oder ohne Thermobeschichtung in Verbindung mit einer Farbbandeinheit oder gegebenenfalls mit anderen Druckverfahren, wie z.B. Inkjetverfahren.With the printer embodiment according to the invention, all three described label rolls or types of receipt rolls can be processed, in each case optionally with thermal coating or without thermal coating in conjunction with a ribbon unit or optionally with other printing processes, such as inkjet processes.

Das Wechseln der Etiketten- bzw. Bonrolle mit dem Einlegen der Bedruckmaterialbahn in den Drucker ist durch die freitragende Anordnung von Druckkopfeinheit und Bedruckmaterial-Transportvorrichtung auf der Gehäuseplatine mit einer einzigen Griffbetätigung sehr einfach und bedienerfreundlich. Gegebenenfalls kann damit gleichzeitig ein Abheben des Thermodruckkopfs bei gleichzeitigem Wegschwenken einer Schwenkrolle verbunden sein.Changing the label or receipt roll with the insertion of the printing material web in the printer is very simple and user-friendly due to the self-supporting arrangement of the print head unit and printing material transport device on the housing board with a single handle operation. Optionally, this may be simultaneously connected to a lifting of the thermal print head with simultaneous pivoting away a castor.

Die Verwendung eines Strangpressprofils als steifer Träger für die Bedruckmaterial-Transportvorrichtung ist in seiner erfindungsgemäßen Ausführung eine besonders vorteilhafte und kostengünstige Lösung. Mehrere Funktionen lassen sich praktisch durch die Strangpressform und deren Formkanäle realisieren, wie beispielsweise die Befestigung an der Gehäuseplatine, die Führungszentrierung und Rastung der Halterung (und gegebenenfalls die Führung des Führungssteckteils) und damit die Lagerung von Transportdruckwalze und Abziehwalze und der Abziehkante, die Befestigung und Lagerung einer Lichtschranke für die Abtastung der Bedruckmaterialbahn und die Führung und Befestigung eines Abweiserbleches für die "Linerless"-Etikettenrollen.The use of an extruded profile as a rigid support for the printing material transport device is in its embodiment according to the invention a particularly advantageous and cost-effective solution. Several functions can be practically realized by the extrusion die and its molding channels, such as attachment to the housing board, the Führungszentrierung and Rastung the holder (and possibly the leadership of the guide plug) and thus the storage of transport pressure roller and take-off roller and the peel, the attachment and Storage of a light barrier for the scanning of the printing material web and the guidance and attachment of a deflector plate for the "linerless" -type label rolls.

Durch die Steifigkeit des Strangpressprofils und einer gegebenenfalls vorzusehenden zusätzlichen, einseitigen Justierbarkeit der Druckkopfauflage lässt sich ein sehr guter, über die ganze Druckbreite gleichmäßiger Druck erreichen. Dies bringt vor allem Vorteile beim Bedrucken unterschiedlicher Rollenbreiten.Due to the rigidity of the extruded profile and an optionally provided additional, one-sided adjustability of the print head support, a very good, over the entire printing width uniform pressure can be achieved. This brings advantages especially when printing different roll widths.

Die Verarbeitung unterschiedlicher Rollenbreiten wird noch erleichtert durch eine zusätzliche Einstellmöglichkeit der Abziehwalze. Dadurch wird erreicht, dass unabhängig von der Rollenbreite die Bedruckmaterialbahn immer mit dem der Gehäuseplatine zugewandten Rand am gleichen Anschlag entlang läuft, so dass beim Einlegen einer Rolle mit einer geänderten Breite keine Verstellung erforderlich ist.The processing of different roller widths is made even easier by an additional adjustment of the peel-off roller. This ensures that, regardless of the roll width, the printing material web always runs with the housing board facing edge along the same stop, so that when inserting a roll with a changed width no adjustment is required.

Eine gleitverschiebliche Lagerung der Lichtschranke in einem Formkanal des Strangpressprofils bringt den Vorteil der Verstellbarkeit über mindestens die halbe max. Bedruckmaterialbahnbreite und damit die Anpassmöglichkeit der Position der Lichtschranke auch an schwierig abzutastende Etiketten, deren Außenform von der rechteckigen Form abweicht. So können beispielsweise runde Etiketten verarbeitet werden, deren Abtastung idealerweise etwa mittig zum Etikettendurchmesser erfolgen sollte.A slidable mounting of the light barrier in a mold channel of the extruded profile brings the advantage of adjustability over at least half max. Bedruckmaterialbahnbreite and thus the possibility of adapting the position of the light barrier to difficult to be scanned labels whose outer shape deviates from the rectangular shape. For example, round labels can be processed, the scanning of which should ideally take place approximately in the middle of the label diameter.

Die universell einsetzbare Bedruckmaterial-Transportvorrichtung bringt durch ihren Aufbau mit leicht tauschbaren Teilen und Teilegruppen auch den Vorteil der leichten Auf- oder Abrüstbarkeit in der Montage der Druckerfertigung oder beim Anwender. So können beispielsweise bei der Verwendung des Druckers als einfacher Bonstreifendrucker die Lichtschranke, Abziehwalze, Schwenkwalze und Aufwickelrolle beim gleichen Grundkonzept des Aubaus einfach weggelassen und auf Wunsch später nachgerüstet werden.The universally applicable printing material transport device brings through their structure with easily exchangeable parts and subassemblies also the advantage of easy up or dismantling in the assembly of the printer production or the user. Thus, for example, when using the printer as a simple Bonstreifendrucker the light barrier, puller roller, pivoting roller and take-up roll are simply omitted in the same basic concept of Aubaus and retrofitted later if desired.

Bedingt durch die einfache seitliche Einlegemöglichkeit der Bedruckmaterialbahn in den Drucker und den geraden Durchlauf der Bedruckmaterialbahn zwischen Druckkopfeinheit und Transporteinheit ohne Berührung von Teilen, eignet sich der Drucker auch in vorteilhafter Weise zur Verarbeitung von "Linerless"-Etikettenrollen.Due to the simple lateral insertion possibility of Bedruckmaterialbahn in the printer and the straight run of the printing material web between the print head unit and transport unit without touching parts, the printer is also advantageously for processing "linerless" -tickets.

Als Funktionsvoraussetzung ist nur eine Druckwalze mit antihaftender Oberflächenbeschichtung, ein zusätzlicher Abweiser, derdas Umwickeln der klebrigen Bedruckmaterialbahn um die Transport/Druckwalze verhindert und ein antihaftbeschichtetes Abweiserblech zum Abdecken der oberen Strangpressprofilfläche erforderlich.The only functional requirement is a pressure roller with non-stick surface coating, an additional deflector, which prevents the wrapping of the sticky Bedruckmaterialbahn to the transport / pressure roller and a non-stick coated Abweiserblech for covering the upper extruded profile surface required.

Diese Zusatzmaßnahmen können entweder grundsätzlich am Drucker vorgesehen werden, oder später durch einfachen Tausch bzw. Einbau von Teilen nachgerüstet werden.These additional measures can either be provided in principle on the printer, or later retrofitted by simple exchange or installation of parts.

Diese und weitere Vorteile der Erfindung werden im folgenden anhand der Beschreibung und der Zeichnung noch näher erläutert. Es zeigen im einzelnen:

Fig. 1
eine perspektivische Vorderansicht eines erfindungsgemäßen Druckers ohne Druckergehäuse und ohne Bedruckmaterialbahn,
Fig. 2A und 2B
Seitenansichten des Druckers in Pfeilrichtung X gemäß Fig. 1 mit hervorgehobenem Bedruckmaterial-Bahnverlauf,
Fig. 3
eine perspektivische Darstellung der erfindungsgemä ßen Bedruckmaterial-Transportvorrichtung, mit einer in demontierter Stellung dargestellten Halterung,
Fig. 4
eine Teilansicht der Bedruckmaterial-Transportvorrichtung in Pfeilrichtung Y gemäß Fig. 3 im Teilschnitt,
Fig. 5
einen Schnitt A - A nach Fig. 4,
These and other advantages of the invention will be explained in more detail below with reference to the description and the drawings. They show in detail:
Fig. 1
a perspective front view of a printer according to the invention without a printer housing and without Bedruckstoffbahn,
FIGS. 2A and 2B
Side views of the printer in the direction of arrow X of FIG. 1 with highlighted printed material web course,
Fig. 3
a perspective view of the inventive Shen printing material transport device, with a holder shown in disassembled position,
Fig. 4
a partial view of the printing material transport device in the direction of arrow Y of FIG. 3 in partial section,
Fig. 5
a section A - A of Fig. 4,

Fig. 1 sowie 2A und 2B zeigen einen Drucker 1 zum Bedrucken einer Etiketten- bzw. Bonrollenbahn - nachstehend Bedruckmaterialbahn 2 genannt - bestehend aus einer Bedruckmaterial-Transportvorrichtung 3 und einer Druckkopfeinheit 4, welche beide einseitig und freitragend auf der Rollenseite 5 einer Gehäuseplatine 6 des Druckers 1 befestigt sind. Die Gehäuseplatine 6 bildet einen Teil des zur Vereinfachung der Figuren nicht dargestellten Druckergehäuses, das den Drucker 1 in bekannter Weise allseitig umschließt und eine Gehäusetür oder -klappe zum Einlegen der Etiketten- bzw. Bonrolle, sowie eine Austrittsöffnung für das bedruckte Bedruckmaterial aufweist.1 and 2A and 2B show a printer 1 for printing a label or receipt roll web - hereinafter referred to as printing material web 2 - consisting of a printing material transport device 3 and a print head unit 4, both one-sided and self-supporting on the roller side 5 of a housing board 6 of Printer 1 are attached. The housing board 6 forms part of the simplification of the figures Not shown printer housing which surrounds the printer 1 in a known manner on all sides and has a housing door or flap for loading the label or receipt roll, and an outlet opening for the printed printing material.

Der Antrieb 7 für die Bedruckmaterial-Transportvorrichtung 3 ist auf der entgegengesetzten, der Rollenseite 5 abgewandten Getriebeseite 8 der Gehäuseplatine 6 angeordnet. Auch die nicht dargestellte Steuerung des Druckers liegt vorzugsweise auf dieser für die Bedienungsperson nicht zugänglichen Getriebeseite 8.The drive 7 for the printing material transport device 3 is arranged on the opposite, the roller side 5 facing away from the transmission side 8 of the housing board 6. Also, not shown control of the printer is preferably on this not accessible to the operator transmission side. 8

Die Druckkopfeinheit 4 ist nach dem bekannten Stand der Technik aufgebaut und deshalb nicht im Detail beschrieben. An einer steifen, fest mit der Gehäuseplatine 6 verbundenen Druckkopfhalterung 9 ist ein Thermodruckkopf 10 um eine Schwenkachse 11 schwenkbar gelagert. Über einen Griff 12 und eine zusätzliche, nicht dargestellte Hebelmechanik kann der Thermodruckkopf 10 aus einer in Fig. 2A und 2B mit Vollstrichen dargestellten Bedruckmaterial-Einlegeposition 13 in eine strichpunktiert dargestellte Druckposition 14 umgestellt werden. Die Hebelmechanik führt dabei, wie an sich bekannt, einen federnden Überhub aus, so dass der Thermodruckkopf 10 mit einer entsprechenden Federkraft mit seiner Drucklinie auf einer Druckwalze 15 der Bedruckmaterial-Transportvorrichtung 3 aufliegt. Dabei liegen die in bekannter Weise eine Drucklinie bildenden Thermoheizelemente 16 parallel zur Druckwalze 15 auf der Oberfläche der Bedruckmaterialbahn 2 auf, die zwischen der als Transportwalze fungierenden, angetriebenen Druckwalze 15 und dem stationären Thermodruckkopf 10 in Pfeilrichtung 17 durchgeführt wird. Die dem Thermodruckkopf 10 zugewandte Bedruckseite 18 der Bedruckmaterialbahn 2 ist mit einer thermosensitiven Schicht versehen, die bei Ansteuerung der die gesamte Breite der Bedruckmaterialbahn 2 abdeckenden Thermoheizelemente 16 infolge der dadurch erzeugten höheren Temperatur in eine andere Farbe umschlägt und damit einen Bedruck erzeugt.The printhead unit 4 is constructed according to the known prior art and therefore not described in detail. On a rigid, firmly connected to the housing board 6 printhead holder 9, a thermal print head 10 is pivotally mounted about a pivot axis 11. About a handle 12 and an additional lever mechanism, not shown, the thermal print head 10 can be converted from a in Fig. 2A and 2B shown in full strokes printing material insertion position 13 in a print position 14 shown in phantom. The lever mechanism leads, as is known, a resilient overstroke, so that the thermal print head 10 rests with a corresponding spring force with its print line on a pressure roller 15 of the printing material transport device 3. The thermo-heating elements 16 forming a line of printing in a known manner lie parallel to the pressure roller 15 on the surface of the printing material web 2, which is carried out in the direction of arrow 17 between the driven pressure roller 15 acting as a transport roller and the stationary thermal printing head 10. The printing head 18 facing the thermal print head 10 of the printing material web 2 is provided with a thermosensitive layer, the control of the entire width of the Bedruckmaterialbahn 2 covering thermal heating 16 as a result of generated higher temperature turns into another color and thus generates a print.

Abweichend von dem oben beschriebenen sogenannten Thermodirektdruck kann der Drucker durch Hinzunahme eines angetriebenen Farbbandes auch als Thermotransferdrucker benutzt werden. Dieses Druckprinzip ist ebenfalls bekannter Stand der Technik. Deshalb wurde auf die Darstellung des Farbbands und dessen Antrieb verzichtet. Bei der Thermotransfer-Drucktechnik wird ein zusätzliches Farbband zwischen dem Thermodruckkopf 10 und der Bedruckmaterialbahn 2 synchron mitbewegt und bei Ansteuerung der Thermoheizelemente 16 Farbe vom Farbband auf die Oberfläche der Bedruckmaterialbahn 2 übertragen, die bei dieser Drucktechnik keine thermosensitive Schicht aufweist. Die Ausführung der Bedruckmaterial-Transpörtvorrichtung 3 und der Druckkopfeinheit 4 bleiben aber bei der Umstellung von Thermodirektdruck auf Thermotransferdruck grundsätzlich gleich.Contrary to the so-called direct thermal printing described above, the printer can also be used as a thermal transfer printer by adding a driven ribbon. This pressure principle is also known prior art. Therefore, the representation of the ribbon and its drive was omitted. In the thermal transfer printing technology, an additional ribbon between the thermal print head 10 and the printing material web 2 is moved synchronously and transfer 16 color from the ink ribbon on the surface of the printing material web 2 when driving the thermal heating 16, which has no thermosensitive layer in this printing technology. The design of the printing material transpörtvorrichtung 3 and the printhead unit 4 remain basically the same when switching from direct thermal printing to thermal transfer printing.

In den Fig. 2A und 2B ist der Verlauf der deutlich hervorgehobenen Bedruckmaterialbahn 2, 2' bzw. 2" durch den Drucker 1 in der Einlegeposition 13 des Thermodruckkopfs 10 dargestellt. Dieser Verlauf variiert aber abhängig davon, welche der drei bereits in der Beschreibung zum Stand der Technik erwähnten Rollenarten bedruckt und als Druckbeleg ausgegeben werden soll:2A and 2B show the course of the clearly highlighted printing material web 2, 2 'or 2 "by the printer 1 in the loading position 13 of the thermal print head 10. However, this course varies depending on which of the three already described in the description of FIG Prior art mentioned types of rolls printed and output as a print document:

a) Bon- oder Etikettenrollen mit auslaufender, nichtklebender Bedruckmaterialbahn (Fig. 2B)a) Bon or label rolls with leaking, non-adhesive printing material web (FIG. 2B)

Die Bedruckmaterialbahn 2 einer auf einem Spendedorn 19 lose gelagerten und mit zwei Anschlägen 20 seitlich fixierten Bon- oder Etikettenrolle 21 wird über eine Umlenkrolle 22 umgelenkt, läuft dann zwischen den in einem Abstand zueinander angeordneten Druckkopfeinheit 4 und der Bedruckmaterial-Transportvorrichtung 3 und anschließend zum Bedrucken zwischen dem Thermodruckkopf 10 und der Druckwalze 15 hindurch.The printing material web 2 a loosely mounted on a donor mandrel 19 and with two stops 20 laterally fixed receipt or label roll 21 is deflected by a guide roller 22, then runs between the spaced apart printhead unit 4 and the printing material transport device 3 and then for printing between the thermal print head 10 and the pressure roller 15 therethrough.

Die angetriebene Druckwalze 15 transportiert die Bedruckmaterialbahn 2 weiter in Pfeilrichtung 17 zu einer nicht dargestellten Austrittsöffnung des Druckergehäuses, an welcher der Druckbeleg entweder manuell über eine Messerkante oder maschinell mittels einer angetriebenen Schneidvorrichtung abgetrennt wird oder außerhalb des Druckers in einer zusätzlichen, nicht dargestellten Einheit wieder zu einer Rolle aufgewickelt wird. Dies können auch auf eine Trägerbahn aufgeklebte Selbstklebeetiketten sein, die als kompletter Streifen aus dem Drucker auslaufen und erst zu einem späteren Zeitpunkt von der Trägerbahn getrennt werden.The driven pressure roller 15 transports the printing material web 2 further in the direction of arrow 17 to an outlet opening of the printer housing, not shown, on which the printing document is separated either manually via a knife edge or mechanically by means of a driven cutting device or outside the printer in an additional unit, not shown again a roll is wound up. This can also be on a carrier web glued self-adhesive labels that leak as a complete strip from the printer and will be separated from the carrier web at a later date.

b) Selbstklebeetikettenrollen mit Trägerbahn (Fig. 2A)b) Self-adhesive label rolls with carrier web (FIG. 2A)

Die Selbstklebeetiketten sind in bekannter Weise entweder aneinanderliegend oder mit Abstand zueinander auf der dem Thermodruckkopf 10 zugewandten Seite einer Trägerbahn 23 aufgeklebt. Die Etiketten bilden zusammen mit der Trägerbahn 23 die in Fig. 2A dargestellte Bedruckmaterialbahn 2'. Der Verlauf dieser Bahn ist bis zur Druckwalze 15 identisch mit der Rollenart a). Unmittelbar nach der Druckwalze 15 wird jedoch die Trägerbahn 23 um eine stationäre Abziehkante 24 scharf umgelenkt. Dies bewirkt eine Trennung der Etiketten von der Trägerbahn 23, die nach der Abziehkante 24 weiter in Pfeilrichtung 17 durch eine nicht dargestellte Austrittsöffnung im Druckergehäuse gespendet werden.The self-adhesive labels are adhered in a known manner either adjacent to one another or at a distance from one another on the side of a carrier web 23 facing the thermal print head 10. The labels together with the carrier web 23 form the printing material web 2 'shown in FIG. 2A. The course of this web is identical to the roller type a) up to the pressure roller 15. Immediately after the pressure roller 15, however, the carrier web 23 is deflected sharply about a stationary peeling edge 24. This causes a separation of the labels from the carrier web 23, which are donated after the peel edge 24 further in the direction of arrow 17 through an outlet opening, not shown, in the printer housing.

Die zum Abziehen der Etiketten benötigte Abziehkraft wird über ein nach der Abziehkante 24 angeordneten Walzenpaar, bestehend aus einer angetriebenen Abziehwalze 25 und einer Schwenkrolle 26 erzeugt. Die Trägerbahn 23 wird anschließend von einem ebenfalls angetriebenen Aufwickeldorn 27 aufgewickelt. Zum Einlegen einer neuen Etikettenrolle 21 wird der Thermodruckkopf 10 mittels Griff 12 in die Einlegeposition 13 geschwenkt. Diese Umstellung des Griffes 12 bewirkt gleichzeitig über einen nicht dargestellten Hebelmechanismus das Wegschwenken eines Schwenkhebels 28 mit der darin einseitig gelagerten Schwenkrolle 26 von der in Fig. 2A strichpunktiert gezeichneten Druckposition in die mit Vollstrichen dargestellte Einlegeposition, um das Einlegen der Etikettenbahn 2' zu erleichtern. Nach dem Zurückschwenken in die strichpunktiert gezeichnete Funktionsstellung bewirkt die Schwenkrolle 26 eine ca. 180°-Umschlingung der angetriebenen Abziehwalze 25 und damit einen schlupffreien Transport der Trägerbahn 23. Die Druckwalze 15 und die Abziehwalze 25 sind zur Verbesserung der Transporteigenschaften mit einem elastischen Überzug 68 aus Gummi oder Kunststoff versehen.The peel force required to peel off the labels is generated via a pair of rollers disposed after the peel edge 24, consisting of a driven peel roller 25 and a pivot roller 26. The carrier web 23 is then followed by a likewise driven Aufwickeldorn 27 wound up. To insert a new label roll 21 of the thermal print head 10 is pivoted by means of handle 12 in the insertion position 13. This change of the handle 12 causes simultaneously via a lever mechanism, not shown, the pivoting away a pivot lever 28 with the cantilever mounted therein pivot roller 26 of the dot-dash line in Fig. 2 printing position in the insertion position shown with full strokes to facilitate the insertion of the label web 2 '. After pivoting back into the dot-dashed functional position causes the swivel caster 26 an approximately 180 ° loop of the driven Abziehwalze 25 and thus a slip-free transport of the carrier web 23. The pressure roller 15 and the Abziehwalze 25 are to improve the transport properties with an elastic coating 68 from Rubber or plastic provided.

c) Selbstklebeetikettenrollen ohne Trägerband ("Linerless"-Etiketten) (Fig. 2B)c) Linerless Labels (Fig. 2B)

Die "Linerless"-Etikettenbahn 2" ist auf der Etikettenrolle 21 mit der Klebefläche nach innen aufgewickelt. Die zu bedruckende Außenseite 18 ist, wie an sich bekannt, mit einer zusätzlichen antihaftenden Beschichtung versehen, um die auf der Vorratsrolle 21 aneinanderliegenden Windungen überhaupt wieder voneinander lösen zu können. Der Verlauf der Etikettenbahn 2" durch den Drucker und die Ausgabe des Druckbelegs ist gleich wie bei der Rollenart a). Die Druckwalze 15 bildet also gleichzeitig die Transportwalze der "Linerless"-Etikettenbahn 2".The "linerless" label web 2 "is wound inwards with the adhesive surface on the label roll 21. The outer side 18 to be printed, as known per se, is provided with an additional non-stick coating in order to separate the turns resting on the supply roll 21 from one another The course of the label web 2 "through the printer and the output of the print document is the same as in the roll type a). The pressure roller 15 thus simultaneously forms the transport roller of the "linerless" label web 2 ".

Im Gegensatz zu a) ist jedoch zu verhindern, dass die klebrige Rückseite der "Linerless"-Etikettenbahn 2" beim Durchlauf an Teilen des Druckers 1 festklebt. Deshalb sind zusätzliche, an sich bekannte Maßnahmen erforderlich, wie antihaftende Beschichtung der Druckwalze 15, ein zusätzlicher Abweiser an der Druckwalze 15, der verhindert, dass diese von der klebenden Etikettenbahn 2" umwickelt wird und eine antihaftende Beschichtung aller Teile, die mit der Klebeseite der Etikettenbahn 2" in Berührung kommen können.However, unlike a), it is necessary to prevent the sticky back side of the linerless label web 2 from sticking to parts of the printer 1 as a result of which, additional measures known per se are required, such as non-stick coating the pressure roller 15, an additional deflector on the pressure roller 15, which prevents it from being "wrapped" by the adhesive label web 2 "and an anti-adhesive coating of all parts which can come into contact with the adhesive side of the label web 2".

In den Fig. 3 bis 5 ist die erfindungsgemäße Bedruckmaterial-Transportvorrichtung 3 detaillierter dargestellt. Die Druckwalze 15, die gleichzeitig eine Transportwalze für die Bedruckmaterialbahn 2, 2', 2" bildet, ist mit ihrem linken, ersten Lagerzapfen 29 in der Gehäuseplatine 6 gelagert, wobei der Lagerzapfen 29 eine von der Kreisform abweichende Anformung, z.B. eine Schlüsselfläche 30 aufweist, die spielfrei in eine formschlüssig angepasste, zentrische Bohrung 31 eines Antriebsrades 32 einschiebbar ist und dadurch eine schlupffreie Drehmitnahme der Druckwalze 15 ermöglicht. Das Antriebsrad 32 ist mit dem Antriebsmotor 7, z.B. über einen nicht dargestellten Zahnriemen, verbunden.In FIGS. 3 to 5, the printing material transport device 3 according to the invention is shown in more detail. The pressure roller 15, which simultaneously forms a transport roller for the printing material web 2, 2 ', 2 ", is mounted with its left, first bearing pin 29 in the housing plate 6, wherein the bearing pin 29 has a deviating from the circular shape Anformung, for example a key surface 30 , which is free of play in a form-fitting adapted, central bore 31 of a drive wheel 32 and thereby enables a slip-free rotational drive of the pressure roller 15. The drive wheel 32 is connected to the drive motor 7, for example via a toothed belt, not shown.

Die Abziehwalze 25 ist in derselben Weise, wie die Druckwalze 15 mit ihrem linken Lagerzapfen 33 drehformschlüssig und zentrisch mit dem Antriebsrad 34 in der Gehäuseplatine 6 mittels Kugellager 59 gelagert.The peeling-off roller 25 is mounted in the same way as the pressure roller 15 with its left-hand bearing journal 33 in rotationally positive locking and concentric with the drive wheel 34 in the housing plate 6 by means of ball bearings 59.

Zwischen der Druckwalze 15 und der Abziehwalze 25 ist auf der Rollenseite 5 der Gehäuseplatine 6 ein aus einem Strangpressprofil aus Aluminium geformter steifer Träger 35 senkrecht zur Gehäuseplatine 6 befestigt, der an seiner Unterseite zwei schwalbenschwanzförmige Nuten 36 zur Aufnahme eines Führungssteckteils 37 aufweist. Das Führungssteckteil 37 weist ebenfalls zwei in die Nuten 36 passende Vorsprünge 38 auf und ist damit senkrecht zur Gehäuseplatine 6 im steifen Träger 35 verschiebbar gehalten.Between the pressure roller 15 and the take-off roller 25, a rigid carrier 35 formed of an extruded aluminum profile is fixed perpendicular to the housing plate 6 on the roller side 5 of the housing plate 6, which has two dovetail grooves 36 on its underside for receiving a guide plug 37. The guide plug part 37 likewise has two projections 38 fitting in the grooves 36 and is thus held displaceable perpendicular to the housing plate 6 in the rigid carrier 35.

An dem als Blechteil ausgeführten Führungssteckteil 37 ist ein um 90° abgewinkelter Schenkel 39 angeformt und mit zwei Zentrierbohrungen 40 versehen, in denen das Führungssteckteil 37 beim Einschieben in seine Funktionsstellung in zwei Zentrierzapfen 41 fixiert wird. Die Zentrierzapfen 41 sind in kreissegmentförmigen Formkanälen 42 des Strangpressprofils 35 eingepresst.At the designed as a sheet metal part guide plug 37 a 90 ° angled leg 39 is formed and provided with two centering holes 40 in which the guide plug member 37 is fixed during insertion into its functional position in two centering pins 41. The centering pins 41 are pressed into circular-segment-shaped mold channels 42 of the extruded profile 35.

In einem weiteren schwalbenschwanzförmigen Formkanal 43 des Strangpressprofils 35 ist ein Formteil 44 aus Kunststoff befestigt, an dem eine federnde Raste 45 ausgebildet ist, die beim Einschieben des Führungssteckteils 37 in der Funktionsstellung in eine Aussparung 46 des Schenkels 39 einrastet. Am Schenkel 39 sind fluchtend zur Druckwalze 15 und Abziehwalze 25 zwei Lagerbuchsen 47, 48 befestigt, welche die Lagerung für den rechten Lagerzapfen 49 der Druckwalze 15 und den rechten Lagerzapfen 50 der Abziehwalze 25 aufnehmen.In a further dovetail-shaped mold channel 43 of the extruded profile 35, a molded part 44 is attached made of plastic, on which a resilient detent 45 is formed, which engages during insertion of the guide plug 37 in the functional position in a recess 46 of the leg 39. On the leg 39 are aligned with the pressure roller 15 and peeling roller 25 has two bearing bushes 47, 48 which receive the storage for the right bearing pin 49 of the pressure roller 15 and the right bearing pin 50 of the peeling roller 25.

Durch Drücken auf die leicht zugängliche federnde Raste 45 lässt sich das Führungssteckteil 37 leicht entriegeln und in senkrechter Richtung zur Gehäuseplatine 6 abnehmen. Anschließend können die Druckwalze 15 und die Abziehwalze 25 in der gleichen Richtung entnommen werden, z.B. zur Reinigung oder im Tausch mit einer neuen Walze.By pressing on the easily accessible resilient catch 45, the guide plug member 37 can be easily unlocked and remove in the vertical direction to the housing board 6. Subsequently, the pressure roller 15 and the peeling roller 25 can be taken out in the same direction, e.g. for cleaning or in exchange with a new roller.

Um das Montieren der Walzen 15 und 25 noch zu erleichtern, sind jeweils an beiden Lagerzapfen 29, 49 und 33, 50 Einführfasen 51 angebracht. Auch die beiden Vorsprünge 38 zum leichten Einführen des Führungssteckteils 37 sind mit Einführschrägen 52 versehen.In order to facilitate the mounting of the rollers 15 and 25, 50 insertion chamfers 51 are respectively mounted on both bearing journals 29, 49 and 33 ,. Also, the two projections 38 for easy insertion of the guide plug 37 are provided with chamfers 52.

Am Führungssteckteil 37 ist unterhalb der Druckwalze 15 eine radiusförmige Anformung 53 hochgebogen, an deren Rand ein gerades Endstück, die sogenannte Abziehkante 24 angeformt ist. Für diese zum Trennen der Selbstklebeetiketten von der Trägerbahn benötigte Abziehkante 24 ist somit kein zusätzliches Teil erforderlich. Mit deren Integration im Führungssteckteil 37 wird dieses vorteilhafterweise infolge der radiusförmigen Anformung 53 versteift. Das Einführen des Führungssteckteils 37 wird erleichtert und die Abziehkante 24 ist bei ausgebautem Führungssteckteil 37 leicht zu reinigen.At the guide plug part 37, a radius-shaped Anformung 53 is bent up below the pressure roller 15, at the edge of a straight tail, the so-called peel edge 24 is formed. For this, for separating the self-adhesive labels from the carrier web Required peel edge 24 is thus no additional part required. With their integration in the guide plug 37 this is advantageously stiffened as a result of the radius-shaped Anformung 53. The insertion of the guide plug 37 is facilitated and the peel edge 24 is easy to clean with removed guide plug 37.

In die Lagerung des rechten Lagerzapfens 49 der Druckwalze 15 ist eine zusätzliche Feineinstellung für die Parallelität des Thermodruckkopfs 10 mit der Druckwalze 15 eingebaut, welche am besten sichtbar aus den Fig. 4 und 5 hervorgeht. Die Lagerbuchse 47 ist im Schenkel 39 des Führungssteckteils 37 so befestigt, dass sie mittels Sicherungsscheibe 54 axial gesichert und durch eine zusätzliche, zwischen Schenkel 39 und Sicherungsscheibe 54 eingespannte Wellfederscheibe 55 schwergängig drehbar ist. An die Lagerbuchse 47 ist eine zusätzliche Einstellkurve 56 angeformt, auf welcher der Thermodruckkopf 10 in der Druckposition aufliegt. Durch Drehung der Lagerbuchse 47 und damit der sehr langsam ansteigenden, angeformten Einstellkurve 56 kann die Parallelität von Thermodruckkopf 10 und Druckwalze 15 zueinander verstellt und damit das Druckergebnis optimiert werden. Die Kurve 56 bildet dabei einen Anschlag für den Thermodruckkopf 10. Dies ist besonders wichtig, wenn eine schmale Etikettenrolle bedruckt wird, deren Etikettenbahn 2' (Bedruckmaterialbahn) außermittig zum Thermodruckkopf 10 in der Nähe der Gehäuseplatine 6 läuft. Die Kurve 56 als Anschlag verhindert beim federnden Anstellen des Thermodruckkopfs 10 in Druckposition 14, dass dieser auf der rechten Seite abkippt.In the storage of the right bearing pin 49 of the platen 15, an additional fine adjustment for the parallelism of the thermal print head 10 is installed with the pressure roller 15, which best visible from Figs. 4 and 5. The bushing 47 is fixed in the leg 39 of the guide plug 37 so that it is axially secured by means of lock washer 54 and by an additional, between leg 39 and lock washer 54 clamped wave washer 55 is stiffly rotatable. To the bearing bush 47, an additional adjustment curve 56 is formed, on which the thermal print head 10 rests in the printing position. By rotation of the bearing bush 47 and thus the very slowly rising, molded adjustment curve 56, the parallelism of the thermal print head 10 and pressure roller 15 can be adjusted to each other and thus the print result can be optimized. The curve 56 forms a stop for the thermal print head 10. This is particularly important when a narrow label roll is printed, the label web 2 '(Bedruckmaterialbahn) eccentrically to the thermal print head 10 in the vicinity of the housing board 6 runs. The curve 56 as a stop prevents the resilient employment of the thermal print head 10 in printing position 14, that this tilts on the right side.

Eine weitere Einstellmöglichkeit der Bedruckmaterial-Transportvorrichtung 3 ist in der Lagerung der Abziehwalze 25 untergebracht. Der rechte Lagerzapfen 50 ist in einer im Schenkel 39 des Führungssteckteils 37 befestigten Lagerbuchse 48 gelagert, die ebenfalls wie die Lagerbuchse 47 mittels einer Sicherungsscheibe 54 axial gesichert und durch eine zusätzliche, zwischen Schenkel 39 und Sicherungsscheibe 54 eingespannte Wellfederscheibe 55 schwergängig drehbar ist. Die Lagerbuchse 48 hat einen exzentrisch zur Mittelbohrung liegenden Bundansatz 58, so dass die Abziehwalze 25 beim Verdrehen der Lagerbuchse 48 eine leichte Schwenkbewegung um ihre linke, als Kugellager ausgeführte Lagerung 59 in der Gehäuseplatine 6 ausführt. Die Verschwenkung der normal senkrecht zur Gehäuseplatine 6 liegenden Mittelachse 60 der Abziehwalze 25 beeinflusst den geraden Verlauf der Bedruckmaterialbahn 2' mit der Trägerbahn 23 durch den Drucker 1. Am Führungssteckteil 37 ist an dem der Gehäuseplatine 6 zugewandten Ende ein Trägerbahnanschlag 61 fest angebracht. Die Lagerbuchse 48 wird nun so eingestellt, dass der der Gehäuseplatine 6 zugewandte Rand der Trägerbahn 23 zum Anschlag 61 hin tendiert und leicht daran anliegend entlang läuft. Dadurch ist es vorteilhafterweise möglich, unterschiedlich breite Selbstklebeetikettenrollen mit Trägerbahn (Rollenart b) ohne Verstellung der Lagerbuchse 48 zu verarbeiten und ohne die Notwendigkeit eines zweiten Trägerbahnanschlags am anderen Trägerbahnrand.Another adjustment of the printing material transport device 3 is housed in the storage of the take-off roller 25. The right bearing pin 50 is mounted in a fortified in the leg 39 of the guide sleeve 37 bearing bushing 48, which also secured axially as the bushing 47 by means of a lock washer 54 and by an additional, between Leg 39 and lock washer 54 clamped wave washer 55 is difficult to turn. The bushing 48 has an eccentric to the central bore lying collar approach 58, so that the take-off roller 25 during rotation of the bearing bush 48 performs a slight pivoting movement about their left, designed as a ball bearing 59 in the housing board 6. The pivoting of the normal perpendicular to the housing plate 6 center axis 60 of the peeling roller 25 influences the straight course of Bedruckmaterialbahn 2 'with the carrier web 23 through the printer 1. At the guide plug part 37 is at the housing plate 6 end facing a carrier web stop 61 firmly attached. The bearing bushing 48 is now adjusted so that the edge of the carrier web 23 facing the housing plate 6 tends toward the stop 61 and easily follows it along fittingly. As a result, it is advantageously possible to process differently wide self-adhesive label rolls with carrier web (roll type b) without adjustment of the bearing bush 48 and without the need for a second carrier web stop on the other carrier web edge.

Beim Durchlauf durch den Drucker durchläuft die Bedruckmaterialbahn 2, 2' und 2" eine Gabellichtschranke 62 zum Abtasten der Etiketten auf der Trägerbahn 23, bzw. zum Abtasten von bereits auf der Vorratsrolle 21 vorhandenen Vordrucken. Die Abtastsignale werden von der Druckersteuerung wie bekannt, zur Synchronisation der Etiketten-Außenkontur bzw. der vorhandenen Vordrucke mit dem danach vom Thermodruckkopf 10 einzudruckenden Druckbild verwendet.As it passes through the printer, the printing material web 2, 2 'and 2 "passes through a forked light barrier 62 for scanning the labels on the carrier web 23 or for scanning pre-prints already present on the supply roll 21. The scanning signals are read by the printer controller as is known Synchronization of the label outer contour or the existing forms used with the then to be printed by the thermal print head 10 print image.

Zur Aufnahme der Gabellichtschranke 62 ist im Strangpressprofil 35 ein vorzugsweise sechskantförmiger Formkanal 63 angeformt, in den auf der der Gehäuseplatine 6 abgewandten Stirnseite des Strangpressprofils 35 eine Lagerbuchse 64 eingepresst ist. Ein Gabellichtschrankenkörper 65 ist auf der Platinenseite des Strangpressprofils 35 gleitverschieblich im Formkanal 63 gelagert und ragt teilweise durch einen Durchbruch 66 der Platine 6 in den Getrieberaum 8 hinein. Über eine in der Lagerbuchse 64 und der Gehäuseplatine 6 gelagerte und axial gesicherte Gewindespindel 67 kann die Gabellichtschranke 62 quer zur Bedruckmaterialbahn 2, 2' bzw. 2" über einen großen Einstellbereich verstellt werden. Dies ist insbesondere dann vorteilhaft, wenn von der rechteckigen Form abweichende Selbstklebeetiketten, z.B. runde Etiketten verarbeitet werden, deren Abtastung idealerweise etwa mittig zum Etiketten-Durchmesser erfolgen sollte.To accommodate the fork light barrier 62, a preferably hexagonal mold channel 63 is formed in the extruded profile 35, in which on the housing plate 6 facing away from the end of the extruded profile 35, a bearing bush 64 is pressed. A fork light barrier body 65 is slidably mounted in the mold channel 63 on the sinker side of the extruded profile 35 and protrudes partially through an opening 66 of the board 6 in the gear chamber 8 into it. The fork light barrier 62 can be adjusted transversely to the printing material web 2, 2 'or 2 "over a large adjustment range via an axially secured threaded spindle 67 in the bearing bush 64 and the housing plate 6. This is advantageous in particular when deviating from the rectangular shape Self-adhesive labels, eg round labels are processed, the sampling should ideally be made approximately in the middle of the label diameter.

Für das Bedrucken von Selbstklebeetiketten ohne Trägerbahn ("Linerless"), bei dem alle mit der Klebeseite der Etikettenbahn 2" in Berührung kommenden Teile antihaftend beschichtet sein sollten, muss auch die obere Fläche 69 des Strangpressprofils 35 antihaftend beschichtet sein, z.B. mit PTFE. Als Alternativlösung dazu kann statt der Antihaft-Beschichtung die obere Fläche 69 mit einem nicht dargestellten zusätzlichen, antihaftbeschichteten Abweiserblech abgedeckt sein. An diesem können beispielsweise wie beim Führungssteckteil 37 zwei Vorsprünge 38, passend zu zwei im Strangpressprofil 35 vorhandenen Formkanälen 70 angebracht sein, in die das Abweiserblech eingeschoben werden kann und das dann nach der Montage des Führungssteckteils 37 zwischen Gehäuseplatine 6 und Schenkel 39 gesichert ist.For the printing of self-adhesive labels without carrier web ("linerless"), in which all parts coming into contact with the adhesive side of the label web 2 "should be non-stickingly coated, the upper surface 69 of the extruded profile 35 must also be coated with non-stick, eg with PTFE Alternatively, instead of the non-stick coating, the upper surface 69 may be covered with an additional, non-stick-coated deflector plate, which may be fitted with two protrusions 38 matching the two mold channels 70 in the extruded profile 35, for example Abweiserblech can be inserted and then secured after assembly of the guide plug 37 between the housing plate 6 and leg 39.

Das beschriebene Ausführungsbeispiel zur vorliegenden Erfindung dient nur zur Illustration des Erfindungsgedankens und dieser umfasst auch andere alternative und äquivalente Ausführungsbeispiele, die beim Lesen der beschriebenen Ausführung für den Fachmann erkennbar werden, z.B. Ausführung eines einfachen Streifendruckers mit dem Weglassen von Lichtschranke, Abziehkante, Abziehwalze, Schwenkwalze und Aufwickelrolle.The described embodiment of the present invention is only illustrative of the inventive concept and includes other alternative and equivalent embodiments which will become apparent to those skilled in the art upon reading the described embodiment, e.g. Running a simple stripe printer with the elimination of photocell, peel, peel, swivel, and take-up reel.

Insbesondere läßt die vorstehende Beschreibung erkennen, dass die erfindungsgemäße Druckvorrichtung so aufgebaut und ausgestattet werden kann, dass alle der gängigen Etikettentypen von derselben Druckvorrichtung ohne Umrüstung verarbeitet werden können. Gleichfalls ist ersichtlich, dass eine zunächst für Bonrollen-Druck ausgelegte Druckvorrichtung einfach und ohne großen Aufwand für das Bedrucken von "Linerless"-Etikettenrollen aufgerüstet oder zum Drucker für Trägerbahnetiketten aufgerüstet werden kann.In particular, the above description indicates that the printing apparatus of the present invention is constructed and equipped can be processed by all the common label types of the same printing device without retooling. Likewise, it can be seen that a first designed for receipt paper printing device can be upgraded easily and without much effort for the printing of "linerless" label rolls or upgraded to the printer for carrier web labels.

Claims (24)

  1. A printing device (1) for printing on printing material in the form of a roll, in particular label and/or receipt rolls, comprising
    - a print head unit (4),
    - a transporting device (3) for the printing material,
    - a housing board (6), on which the print head unit (4) and the transporting device (3) are mounted at one end in cantilevered manner and in a predetermined relationship relative to one another,
    - wherein the transporting device (3) comprises a stiff support member (35) which is rigidly connected to the housing board (6), a mounting member (37) which extends substantially parallel relative to the housing board and is held on the stiff support member (35), and at least one transport roller (15) for the transportation of the printing material (2, 2', 2") which is mounted at both ends, characterised in that
    - the stiff support member (35) comprises connecting elements for releasably fixing the mounting member (37) and also guide elements (41) which co-operate with corresponding guide elements (40) of the mounting member (37) for exactly positioning the arrangement with reference to the support member (35), and
    - the first end of the transport roller (15) is mounted at the housing board (6) side and is releasably connected to a drive device (7) whilst the second end of the transport roller (15) is releasably mounted at the mounting member (37) side.
  2. A device in accordance with Claim 1, characterised in that the guide elements of the support member (35) and of the mounting member (37) comprise studs and matching borings.
  3. A device in accordance with Claim 1 or 2, characterised in that the mounting member is a plug-in guide member (37) which is displaceably guided, in snug-fit manner, on the stiff support member (35) perpendicularly relative to the plane of the housing board (6).
  4. A device in accordance with any of the Claims 1 to 3, characterised in that the transport roller (15) comprises two bearing journals, wherein the first bearing journal is mounted in the housing board and the second bearing journal is mounted in the mounting member.
  5. A device in accordance with any of the Claims 1 to 4, characterised in that the mounting member (37) is fixed in lockable and releasable manner by means of a latch (45) formed on the stiff support member (35).
  6. A device in accordance with either of the Claims 1 or 5, characterised in that the transport roller (15) simultaneously forms a print roller (15) for a print head (10) of the print head unit (4) which is adjacent and parallel thereto.
  7. A device in accordance with Claim 6, characterised in that the print head (10) is a thermal print head which rests in resilient manner on the print roller (15) via the heating elements (16) thereof that form a print line.
  8. A device in accordance with any of the Claims 4 to 7, characterised in that the first bearing journal (29) of the transport roller (15) facing the housing board (6) comprises a shaped section thereof (30) which differs from a circular shape and is insertible in play-free, snug-fitting manner into a matching boring (31) of the drive device (32) thereby enabling the transport roller (15) to rotate therewith without slipping.
  9. A device in accordance with any of the Claims 1 to 8, characterised in that the stiff support member (35) is formed from an extruded profile, comprises grooves (36) arranged perpendicularly relative to the housing board (6) for accommodating the mounting member (37) in snug-fitting and slideable manner and comprises two moulded channels (42) in the form of segments of a circle for accommodating centralising studs (41) for fixing the position of the mounting member (37) in a precise manner.
  10. A device in accordance with any of the Claims 1 to 9, characterised in that a leg (39) bent through 90° is formed on the mounting member (37), said leg being provided with at least one centralising boring which is fixed by at least one centralising stud 41 when the mounting member (37) is inserted into the functional position thereof, said centralising stud 41 being pressed into a moulded channel (42) of the support member (35), which channel is in the form of a segment of a circle.
  11. A device in accordance with Claim 10, characterised in that a bush bearing (47), which forms the mounting for the second end (49) of the transport roller (15), is arranged in the leg (39) of the mounting member (37) such as to be aligned with the transport roller (15).
  12. A device in accordance with Claim 10 or 11, characterised in that a recess (46) is formed in the leg (39) of the mounting member (37), and a resilient latch (45) of a moulded member (44) that is fixed in a moulded channel (43) of the support member (35) latches in said recess.
  13. A device in accordance with any of the Claims 1 to 12, characterised in that there is provided a drawing off roller (25) which, by means of one of its bearing journals (33) which has a section (30) thereof that differs from a circular shape, is insertible in snug-fitting, play-free manner into a matching boring (31) in a drive wheel (34) that is mounted in the housing board (6) thereby enabling the drawing off roller (25) to rotate therewith without slipping.
  14. A device in accordance with Claim 13, characterised in that a bush bearing (48) is arranged in the leg (39) of the mounting member (37) such as to be aligned with the drawing off roller (25), wherein said bush bearing forms the mounting for a second bearing journal (50) of the drawing off roller (25).
  15. A device in accordance with Claim 14, characterised in that pilot chamfers (51) are formed on the two bearing journals (29, 49) of the transport roller (15) and on the two bearing journals (33, 50) of the drawing off roller (25), and wherein the two projections (38) are provided with pilot bevels (52).
  16. A device in accordance with any of the Claims 10 to 15, characterised in that, for stiffening purposes, the mounting member (37) comprises a radius-like shaped portion (53) which extends in parallel with the transport roller that serves as a print roller, and a stripping edge (24) for the separation of the self-adhesive labels from the backing strip is formed at the edge of said shaped portion.
  17. A device in accordance with any of the Claims 5 to 16, characterised in that one of the mountings (47) of the transport roller (15) that serves as a print roller is formed such that it is rotatable in sluggish manner and an adjustment cam (56) is formed thereon, wherein the thermal print head (10) rests on said cam in the printing position thereof, and wherein the parallelism of the thermal print head (10) relative to the transport roller (15) is adjustable by rotation of the mounting (47).
  18. A device in accordance with any of the Claims 13 to 17, characterised in that a bush bearing (48), which is rotatable in sluggish manner, is provided for mounting the second bearing journal (50) of the drawing off roller (25), wherein said bush bearing comprises a neck collar (58) that is located eccentrically relative to the mounting position, and wherein the drawing off roller executes a slight pivotal movement about its first bearing journal (59) in the housing board (6) when the bush bearing (48) is rotated.
  19. A device in accordance with Claim 18, characterised in that, by rotation of the bush bearing (48), the path of the printing material (2') through the printer (1) is adjustable in such a manner that the left-hand edge of the backing strip (23) facing the housing board (6) rests on a backing strip stop member (61) that is fixed to the mounting member (37).
  20. A device in accordance with any of the Claims 1 to 19, characterised in that a forked light barrier (62) is mounted in slideable manner on the support member (35) perpendicularly relative to the housing board (6).
  21. A device in accordance with Claim 20, characterised in that the forked light barrier (62) is adjustable perpendicularly relative to the housing board (6) by means of a threaded spindle (67).
  22. A device in accordance with any of the Claims 6 to 21, characterised in that the transport roller (15) functioning as a print roller comprises a resilient covering (68) which is provided with a non-stick coating for the purposes of transporting a self-adhesive strip of labels (2") (linerless).
  23. A device in accordance with any of the Claims 1 to 22, characterised in that an upper surface (69) of the support member (35) is provided with a non-stick coating, e.g. PTFE.
  24. A device in accordance with Claim 23, characterised in that two moulded channels (70) are provided on the upper surface (69) for accommodating a deflector plate having a non-stick coating thereon.
EP01911763A 2000-05-02 2001-03-13 Printing device Expired - Lifetime EP1278641B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10021038 2000-05-02
DE10021038A DE10021038C1 (en) 2000-05-02 2000-05-02 Printing device for printing on a printing material in roll form
PCT/EP2001/002817 WO2001083224A1 (en) 2000-05-02 2001-03-13 Printing device

Publications (2)

Publication Number Publication Date
EP1278641A1 EP1278641A1 (en) 2003-01-29
EP1278641B1 true EP1278641B1 (en) 2007-09-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01911763A Expired - Lifetime EP1278641B1 (en) 2000-05-02 2001-03-13 Printing device

Country Status (8)

Country Link
US (1) US6860663B2 (en)
EP (1) EP1278641B1 (en)
JP (1) JP4777584B2 (en)
AT (1) ATE372879T1 (en)
DE (2) DE10021038C1 (en)
DK (1) DK1278641T3 (en)
ES (1) ES2290116T3 (en)
WO (1) WO2001083224A1 (en)

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EP3616932A1 (en) 2018-08-27 2020-03-04 Bizerba SE & Co. KG Method for determining wearing of a printing apparatus and printing apparatus

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ATE372879T1 (en) 2007-09-15
US6860663B2 (en) 2005-03-01
WO2001083224A1 (en) 2001-11-08
DK1278641T3 (en) 2008-01-21
JP4777584B2 (en) 2011-09-21
DE10021038C1 (en) 2001-11-15
ES2290116T3 (en) 2008-02-16
JP2003531786A (en) 2003-10-28
DE50113006D1 (en) 2007-10-25
EP1278641A1 (en) 2003-01-29
US20030053835A1 (en) 2003-03-20

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