EP0355939A2 - Ink ribbon cartridge - Google Patents

Ink ribbon cartridge Download PDF

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Publication number
EP0355939A2
EP0355939A2 EP89250012A EP89250012A EP0355939A2 EP 0355939 A2 EP0355939 A2 EP 0355939A2 EP 89250012 A EP89250012 A EP 89250012A EP 89250012 A EP89250012 A EP 89250012A EP 0355939 A2 EP0355939 A2 EP 0355939A2
Authority
EP
European Patent Office
Prior art keywords
support body
barbs
cassette housing
ink ribbon
cassette
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.)
Granted
Application number
EP89250012A
Other languages
German (de)
French (fr)
Other versions
EP0355939B1 (en
EP0355939A3 (en
Inventor
Edelbert Dipl.-Ing. Wiechert
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0355939A2 publication Critical patent/EP0355939A2/en
Publication of EP0355939A3 publication Critical patent/EP0355939A3/en
Application granted granted Critical
Publication of EP0355939B1 publication Critical patent/EP0355939B1/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
    • B41J17/00—Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper
    • B41J17/32—Detachable carriers or holders for impression-transfer material mechanism

Definitions

  • the invention relates to an ink ribbon cassette for an image recording device consisting of a cassette housing in which a printing roller and an ink ribbon stored on two winding spools axially parallel to the printing roller are arranged.
  • an ink ribbon cassette for an image recording device designed as a parallel thermal transfer printer in which a line-shaped recording head is arranged within a printer housing.
  • the ink ribbon cassette which can be inserted into the printer housing through a lateral opening in the direction along the recording head, contains a printing roller and an ink ribbon on two winding spools that are axially parallel to the printing roller in a cartridge housing. Since the print roller and the winding spools are integral parts of the ribbon cassette, the cassette housing and the print roller are automatically replaced each time the ribbon is changed.
  • an ink ribbon cassette of the type specified at the outset is considered to be state of the art, in which the winding spools for the ink ribbon are held in two bearing bodies and together with them one in the cartridge housing insertable, interchangeable unit form, so that a ribbon change does not necessarily require an exchange of the entire ribbon cassette including the printing roller.
  • the invention has for its object to enable a ribbon change that is particularly easy to carry out manually, without having to change the cassette housing together with the Print roller is required.
  • this object is achieved in that the winding spools are held on a common support body in the ink ribbon cassette of the type mentioned, that the support body is removably arranged in the cassette housing and locked by means of a locking device and that at least one actuating element on the support body is arranged for simultaneously unlocking and removing the support body from the cassette housing.
  • the main advantage of the ink ribbon cassette according to the invention is the simple interchangeability of the ink ribbon, wherein only one handle is required to remove the ink ribbon, with which the carrier body is unlocked in the cartridge housing and at the same time removed from it.
  • the at least one actuating element serves as a grip element for holding the support body with the winding spools, so that touching the ink ribbon is excluded; this is particularly important in the case of generally very thin and therefore correspondingly sensitive thermal transfer ribbons.
  • the carrier body consists of two side parts receiving the winding spools at their axial ends and a connecting part connecting the side parts with a recess for the printing roller, an actuating element being arranged on each of the side parts. Due to the arrangement of the actuating elements on both sides, the support body with the winding spools can be easily removed with both hands from the cassette housing.
  • the cassette housing consists of a substantially cuboid one-sided open box, the open side of which is closed by the connecting part of the carrier body when the carrier body is inserted so that touching the ribbon on the winding spools is prevented when handling the ribbon cassette.
  • a secure and correct locking of the support body with the winding spools in the cassette housing is advantageously made possible in that the pressure roller is mounted in the cassette housing between two mounting parts on which the locking parts forming barbed parts are held with barbs at their ends, and that at the Side parts of the support body in shoulder-ending ramp surfaces for the barbs are designed in such a way that when the support body is inserted into the cassette housing, the bent parts are deflected and the barbs spring back behind the heels in the locking position.
  • the run-up surfaces additionally serve in cooperation with the barbs attached to them as a guide when inserting the support body into the cassette housing, so that damage to the ink ribbon on the winding spools is avoided, for example by tilting the support body.
  • the actuating elements are preferably designed in the form of bending elements which have ends at the ends opposite the barbs and can be moved in the direction of the barbs in the sense of their unlocking. Due to their design as bending elements, the actuating elements can advantageously be connected in one piece to the support body in the form of plastic injection molded parts.
  • the ribbon cassette In connection with the design of the actuating elements in the form of bending elements, according to a preferred development of the ribbon cassette according to the invention it is provided that two bending elements are arranged on both side parts of the support body perpendicular to the direction of removal of the support body from the cassette housing.
  • the opposite bending elements can be gripped and pressed together on both sides of the support body with thumb and forefinger, whereby the Unlocking the support body and holding it securely and conveniently with both hands between thumb and index finger for removal from the cassette housing.
  • Another advantage of this development is the fact that only an approximately finger-wide gap is required between the side parts of the support body and the inner walls of the cassette housing opposite them in order to allow access to the actuating elements (bending elements).
  • the locking device in the form of bent parts with barbs in connection with the design of the actuating elements as bending elements for pushing back the barbs, it is possible to form the actuating elements (bending elements) on the supporting body as close as possible to its connecting part, so that the actuating elements can be gripped does not have to be reached deep into the gap between the side parts of the support body and the inner walls of the cassette housing; the gap can therefore be made correspondingly narrow.
  • FIG. 1 shows an exemplary embodiment of the ink ribbon cassette according to the invention, the essential components of which are shown here separately from one another for the sake of clarity.
  • the ribbon cassette is closed to the outside by a cassette housing 1, which consists essentially of a cuboid, open to one side box.
  • a cassette housing 1 Within the cassette housing 1, rib-shaped, curved guide elements 2 are formed which, as will be explained in more detail below, serve to guide a recording sheet to be printed.
  • the cassette housing 1 has grooves 3 and 4 on its lower inner wall delimited by guide ribs for receiving two holding parts 5 and 6, between which a pressure roller 7 is rotatably mounted.
  • the pressure roller 7 is connected in the region of its bearing in the holding part designated 6 with a drive gear 8 which meshes with two further gears 9 and 10.
  • the two mounting parts 5 and 6 have on their sides facing the inner walls of the cassette housing 1 elastic bent parts with barbs at their ends, of which in FIG. 1 the bent parts 11 and 12 with their barbs 13 and 14 are only visible on the mounting part 5.
  • the mounting parts 5 and 6 for the printing roller 7 are shown outside of the cassette housing 1 only for the sake of clarity; in fact, however, they are fitted in grooves 3 and 4.
  • an ink ribbon is stored on two winding spools 16 and 17, which are held on a common support body 18 parallel to one another.
  • the support body 18 consists of two side parts 19 and 20, which take up the winding coils 16 and 17 at their axial ends, and are connected to one another via a connecting part 21.
  • the support body 18 forms, together with the winding spools 16 and 17, an exchangeable unit which can be inserted into the cassette housing 1 of the ink ribbon cassette, the printing roller 7, in the inserted state, being partially wrapped around the section of the ink ribbon 15 lying between the winding spools 16 and 17 from a recess 22 in protrudes from the connecting part 21 and a gear 23 connected to the winding spool 16 via a slip clutch meshes with the gear 10 on the holding part 6.
  • the complete ribbon cassette can be plugged into a printer (not shown here), the printing roller 7 with the adjacent ink ribbon 15 coming to rest on a line-shaped recording head, for example a thermal printing head, which extends along the printing roller 7.
  • the carrier body 18 with the winding spools 16 and 17 can be inserted into or removed from the cassette housing 1 of the ink ribbon cassette.
  • FIG. 2 attaches the supporting body 18 shows on the bracket parts 5 and 6 in side view from the viewing direction designated X in Figure 1.
  • the pressure roller 7 and the winding spools 16 and 17 are omitted in FIG. 2, so that only the side part 20 of the support body 18 and the holder part 6 are visible.
  • the side part designated 19 in FIG. 1 and the holding part 5 are constructed in the same way as parts 20 and 6.
  • FIG. 2 shows, two parallel bent parts 28 and 29 are held on the holding part 6, which are provided at their ends with barbs 30 and 31 facing away from one another and pointing outwards.
  • the bent parts 28 and 29 are integrally formed on a plastic body 32 which in turn is fastened to the holding part 6.
  • Each of the two side parts 19 and 20 of the support body 18 - here the side part 20 - has two contact surfaces 33 and 34 for the barbs 30 and 31 on the bent parts 28 and 29.
  • the ramp surfaces 33 and 34 form in the direction designated 35 for the insertion of the support body 18 in the cassette housing 1 a funnel-shaped extension and end in the opposite direction with the formation of paragraphs 36 and 37, so that when inserting the support body 18 in the cassette housing 1 Barbs 30 and 31 slide along the run-up surfaces 33 and 34, the bent parts 28 and 29 being increasingly deflected and finally the barbs 30 and 31 snap into a locking position engaging behind the shoulders 36 and 37.
  • This locked state is shown in Figure 2.
  • the contact surfaces 33 and 34 in cooperation with the barbs 30 and 31 resiliently attached to them, serve as a guide when inserting the support body 18 into the cassette housing 1, thereby preventing the support body from tilting and possibly damaging the ink ribbon 15.
  • FIG. 2 also shows using the example of the side part 20, the actuating elements 25 and 26 on the two side parts 19 and 20 each consist of two mutually opposite bending elements 38 and 39, which are molded onto the side part 20 made of plastic.
  • the two bends elements 38 and 39 formed in such a way on the side part 20 that they can be gripped and pressed against one another at the outside grip points 40 and 41 with the thumb and forefinger of one hand, the barbs 30 and 31 opposite approaches 42 and 43 of the bending elements 38 and 39 are pushed over the paragraphs 36 and 37, pushing back the barbs 30 and 31.
  • the support body 18 can thus be unlocked and removed from the cassette housing 1 in a simple manner by pressing the opposite bending elements on both sides of the support body 18 with thumb and forefinger, the support body 18 being unlocked and simultaneously with both hands is held securely and conveniently in each case between the thumb and index finger for removal from the cassette housing 1. It is for secure gripping of the actuators 26 and 27 or the bending elements forming them z. B. 38 and 39 only an approximately finger-wide gap between the side parts 19 and 20 of the support body and the inner wall of the cassette housing 1 is required, so that a compact structure of the ribbon cassette is achieved.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

A known ink ribbon cartridge for an image recording device contains a printing cylinder and an ink ribbon on two winding spools parallel to the axis of the printing cylinder in a cartridge housing. …<??>In order not to have to exchange the cartridge housing (1) and the printing cylinder (7) when the ink ribbon is changed, in the new ink ribbon cartridge the winding spools (16, 17) are fastened to a common bearing body (18) which can be locked inside the cartridge housing (1) by means of a locking device (11 to 14) and which has operating elements (26, 27) for simultaneous unlocking and removal of the bearing body (18) from the cartridge housing (1) …<IMAGE>…

Description

Die Erfindung betrifft eine Farbbandkassette für eine Bildauf­zeichnungsvorrichtung bestehend aus einem Kassettengehäuse, in dem eine Druckwalze und ein auf zwei zur Druckwalze achs­parallelen Wickelspulen bevorratetes Farbband angeordnet sind.The invention relates to an ink ribbon cassette for an image recording device consisting of a cassette housing in which a printing roller and an ink ribbon stored on two winding spools axially parallel to the printing roller are arranged.

Aus der DE-OS 35 39 526 ist eine derartige Farbbandkassette für eine als parallel arbeitender Thermotransferdrucker ausgebildete Bildaufzeichnungsvorrichtung bekannt, bei der innerhalb eines Druckergehäuses ein zeilenförmiger Aufzeichnungskopf angeordnet ist. Die Farbbandkassette, die durch eine seitliche Öffnung in Richtung längs zu dem Aufzeichnungskopf in das Druckergehäuse einführbar ist, enthält in einem Kassettengehäuse eine Druck­walze und ein Farbband auf zwei zur Druckwalze achsparallelen Wickelspulen. Da die Druckwalze und die Wickelspulen integrale Bestandteile der Farbbandkassette sind, erfolgt bei jedem Farb­bandwechsel automatisch auch ein Austausch des Kassettengehäuses und der Druckwalze.From DE-OS 35 39 526, such an ink ribbon cassette for an image recording device designed as a parallel thermal transfer printer is known, in which a line-shaped recording head is arranged within a printer housing. The ink ribbon cassette, which can be inserted into the printer housing through a lateral opening in the direction along the recording head, contains a printing roller and an ink ribbon on two winding spools that are axially parallel to the printing roller in a cartridge housing. Since the print roller and the winding spools are integral parts of the ribbon cassette, the cassette housing and the print roller are automatically replaced each time the ribbon is changed.

Ferner gilt im Hinblick auf die deutsche Patentanmeldung P 37 21 231.1 bzw. eine unter Beanspruchung dieser Patentanmel­dung eingereichte Nachanmeldung eine Farbbandkassette der ein­gangs angegebenen Art als Stand der Technik, bei der die Wickel­spulen für das Farbband in zwei Lagerkörpern gehalten sind und zusammen mit diesen eine in das Kassettengehäuse einsetzbare, austauschbare Einheit bilden, so daß ein Farbbandwechsel nicht unbedingt einen Austausch der gesamten Farbbandkassette ein­schließlich der Druckwalze erfordert.Furthermore, with regard to the German patent application P 37 21 231.1 or a subsequent application filed under the claim of this patent application, an ink ribbon cassette of the type specified at the outset is considered to be state of the art, in which the winding spools for the ink ribbon are held in two bearing bodies and together with them one in the cartridge housing insertable, interchangeable unit form, so that a ribbon change does not necessarily require an exchange of the entire ribbon cassette including the printing roller.

Der Erfindung liegt die Aufgabe zugrunde, einen manuell be­sonders einfach durchführbaren Farbbandwechsel zu ermöglichen, ohne daß hierzu ein Wechsel des Kassettengehäuses mitsamt der Druckwalze erforderlich ist.The invention has for its object to enable a ribbon change that is particularly easy to carry out manually, without having to change the cassette housing together with the Print roller is required.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß bei der Farbbandkassette der eingangs angegebenen Art die Wickel­spulen an einem gemeinsamen Tragkörper gehalten sind, daß der Tragkörper in dem Kassettengehäuse aus diesem herausnehmbar angeordnet und mittels einer Verriegelungseinrichtung ver­riegelt ist und daß an dem Tragkörper zumindest ein Betätigungs­element zum gleichzeitigen Entriegeln und Herausnehmen des Tragkörpers aus dem Kassettengehäuse angeordnet ist.According to the invention, this object is achieved in that the winding spools are held on a common support body in the ink ribbon cassette of the type mentioned, that the support body is removably arranged in the cassette housing and locked by means of a locking device and that at least one actuating element on the support body is arranged for simultaneously unlocking and removing the support body from the cassette housing.

Der wesentliche Vorteil der erfindungsgemäßen Farbbandkassette besteht in der einfachen Austauschbarkeit des Farbbandes, wobei zum Entfernen des Farbbandes nur ein Handgriff erforderlich ist, mit dem der Tragkörper in dem Kassettengehäuse entriegelt und zugleich aus diesem herausgenommen wird. Das zumindest eine Betätigungselement dient dabei als Griffelement zum Halten des Tragkörpers mit den Wickelspulen, so daß ein Berühren des Farb­bandes ausgeschlossen wird; dies ist insbesondere bei in der Regel sehr dünnen und daher entsprechend empfindlichen Thermo­transferfarbbändern von Bedeutung.The main advantage of the ink ribbon cassette according to the invention is the simple interchangeability of the ink ribbon, wherein only one handle is required to remove the ink ribbon, with which the carrier body is unlocked in the cartridge housing and at the same time removed from it. The at least one actuating element serves as a grip element for holding the support body with the winding spools, so that touching the ink ribbon is excluded; this is particularly important in the case of generally very thin and therefore correspondingly sensitive thermal transfer ribbons.

Entsprechend einer bevorzugten Ausbildung der erfindungsgemäßen Farbbandkassette besteht der Tragkörper aus zwei, die Wickel­spulen an ihren Achsenden aufnehmenden Seitenteilen und einem die Seitenteile verbindenden Verbindungsteil mit einer Aus­sparung für die Druckwalze, wobei an beiden Seitenteilen jeweils ein Betätigungselement angeordnet ist. Durch die beid­seitige Anordnung der Betätigungselemente ist der Tragkörper mit den Wickelspulen auf einfache Weise beidhändig aus dem Kassettengehäuse herausnehmbar. Das Kassettengehäuse besteht dabei aus einem im wesentlichen quaderförmigen einseitig offenen Kasten, dessen offene Seite bei eingesetztem Tragkörper durch das Verbindungsteil des Tragkörpers soweit verschlossen wird, daß beim Hantieren mit der Farbbandkassette ein Berühren des Farbbandes auf den Wickelspulen verhindert wird.According to a preferred embodiment of the ribbon cassette according to the invention, the carrier body consists of two side parts receiving the winding spools at their axial ends and a connecting part connecting the side parts with a recess for the printing roller, an actuating element being arranged on each of the side parts. Due to the arrangement of the actuating elements on both sides, the support body with the winding spools can be easily removed with both hands from the cassette housing. The cassette housing consists of a substantially cuboid one-sided open box, the open side of which is closed by the connecting part of the carrier body when the carrier body is inserted so that touching the ribbon on the winding spools is prevented when handling the ribbon cassette.

Eine sichere und lagerichtige Verriegelung des Tragkörpers mit den Wickelspulen in dem Kassettengehäuse wird in vorteilhafter Weise dadurch ermöglicht, daß die Druckwalze in dem Kassetten­gehäuse zwischen zwei Halterungsteilen gelagert ist, an denen die Verriegelungseinrichtung bildende Biegeteile mit Widerhaken an ihren Enden gehalten sind, und daß an den Seitenteilen des Tragkörpers in Absätzen endende Auflaufflächen für die Wider­haken in der Weise ausgebildet sind, daß beim Einfügen des Tragkörpers in das Kassettengehäuse die Biegeteile ausgelenkt werden und in Verriegelungsstellung die Widerhaken die Absätze federnd hintergreifen. Dabei dienen die Auflaufflächen zusätz­lich im Zusammenwirken mit den an ihnen anliegenden Widerhaken als Führungshilfe beim Einsetzen des Tragkörpers in das Kassettengehäuse, so daß eine Beschädigung des Farbbandes auf den Wickelspulen beispielsweise durch Verkanten des Trag­körpers vermieden wird.A secure and correct locking of the support body with the winding spools in the cassette housing is advantageously made possible in that the pressure roller is mounted in the cassette housing between two mounting parts on which the locking parts forming barbed parts are held with barbs at their ends, and that at the Side parts of the support body in shoulder-ending ramp surfaces for the barbs are designed in such a way that when the support body is inserted into the cassette housing, the bent parts are deflected and the barbs spring back behind the heels in the locking position. The run-up surfaces additionally serve in cooperation with the barbs attached to them as a guide when inserting the support body into the cassette housing, so that damage to the ink ribbon on the winding spools is avoided, for example by tilting the support body.

Zur Entriegelung des Tragkörpers in dem Kassettengehäuse sind die Betätigungselemente vorzugsweise in Form von Biegeelementen ausgebildet, die an ihren Enden den Widerhaken gegenüberliegen­de Ansätze aufweisen und in Richtung auf die Widerhaken zu im Sinne ihrer Entriegelung bewegbar sind. Aufgrund ihrer Aus­bildung als Biegeelemente können die Betätigungselemente her­stellungstechnisch in vorteilhafter Weise als Kunststoff-Spritz­gußteile einstückig mit dem Tragkörper verbunden sein.To unlock the support body in the cassette housing, the actuating elements are preferably designed in the form of bending elements which have ends at the ends opposite the barbs and can be moved in the direction of the barbs in the sense of their unlocking. Due to their design as bending elements, the actuating elements can advantageously be connected in one piece to the support body in the form of plastic injection molded parts.

Im Zusammenhang mit der Ausbildung der Betätigungselemente in Form von Biegeelementen ist entsprechend einer bevorzugten Weiterbildung der erfindungsgemäßen Farbbandkassette vorgesehen, daß an beiden Seitenteilen des Tragkörpers jeweils zwei Biege­elemente senkrecht zur Herausnahmerichtung des Tragkörpers aus dem Kassettengehäuse aufeinanderzubewegbar angeordnet sind. Zum Entriegeln und Herausnehmen des Tragkörpers aus dem Kassetten­gehäuse lassen sich auf beiden Seiten des Tragkörpers die dort gegenüberliegenden Biegeelemente jeweils mit Daumen und Zeigefinger greifen und aufeinanderzudrücken, wobei der Tragkörper entriegelt wird und gleichzeitig mit beiden Händen jeweils zwischen Daumen und Zeigefinger sicher und bequem zum Herausnehmen aus dem Kassettengehäuse gehalten wird. Ein weiterer Vorteil dieser Weiterbildung ist darin zu sehen, daß zwischen den Seitenteilen des Tragkörpers und den ihnen gegenüberliegenden Innenwänden des Kassettengehäuses ledig­lich ein etwa fingerbreiter Spalt erforderlich ist, um einen Zugriff an die Betätigungselemente (Biegeelemente) zu ermög­lichen. Außerdem ist es durch die Ausbildung der Verriegelungs­einrichtung in Form von Biegeteilen mit Widerhaken in Verbin­dung mit der Ausbildung der Betätigungselemente als Biege­elemente zum Zurückdrücken der Widerhaken möglich, die Betäti­gungselemente (Biegeelemente) an dem Tragkörper möglichst nahe zu dessen Verbindungsteil auszubilden, so daß zum Greifen der Betätigungselemente nicht tief in den Spalt zwischen den Seitenteilen des Tragkörpers und den Innenwänden des Kassetten­gehäuses hineingegriffen werden muß; der Spalt kann daher ent­sprechend eng ausgebildet sein.In connection with the design of the actuating elements in the form of bending elements, according to a preferred development of the ribbon cassette according to the invention it is provided that two bending elements are arranged on both side parts of the support body perpendicular to the direction of removal of the support body from the cassette housing. To unlock and remove the support body from the cassette housing, the opposite bending elements can be gripped and pressed together on both sides of the support body with thumb and forefinger, whereby the Unlocking the support body and holding it securely and conveniently with both hands between thumb and index finger for removal from the cassette housing. Another advantage of this development is the fact that only an approximately finger-wide gap is required between the side parts of the support body and the inner walls of the cassette housing opposite them in order to allow access to the actuating elements (bending elements). In addition, through the design of the locking device in the form of bent parts with barbs in connection with the design of the actuating elements as bending elements for pushing back the barbs, it is possible to form the actuating elements (bending elements) on the supporting body as close as possible to its connecting part, so that the actuating elements can be gripped does not have to be reached deep into the gap between the side parts of the support body and the inner walls of the cassette housing; the gap can therefore be made correspondingly narrow.

Zur Erläuterung der Erfindung wird im folgenden auf die Figuren der Zeichnung Bezug genommen; im einzelnen zeigen

  • Figur 1 ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Farbbandkassette und
  • Figur 2 eine Teilansicht der Farbbandkassette nach Figur 1 aus der mit X bezeichneten Blickrichtung.
To explain the invention, reference is made below to the figures of the drawing; show in detail
  • Figure 1 shows a preferred embodiment of the ribbon cassette according to the invention and
  • FIG. 2 shows a partial view of the ink ribbon cassette according to FIG. 1 from the viewing direction denoted by X.

Figur 1 zeigt ein Ausführungsbeispiel der erfindungsgemäßen Farbbandkassette, deren wesentliche Bestandteile hier aus Gründen der übersichtlicheren Darstellung voneinander getrennt dargestellt sind. Die Farbbandkassette ist nach außen hin durch ein Kassettengehäuse 1 abgeschlossen, das im wesentlichen aus einem quaderförmigen, nach einer Seite hin offenen Kasten besteht. Innerhalb des Kassettengehäuses 1 sind rippenförmige, in Bögen verlaufende Leitelemente 2 ausgebildet, die, wie unten­stehend noch näher erläutert wird, zur Führung eines zu bedrucken­den Aufzeichnungsblattes dienen. Das Kassettengehäuse 1 weist an seiner unteren Innenwand durch Führungsrippen begrenzte Nuten 3 und 4 zur Aufnahme von zwei Halterungsteilen 5 und 6 auf, zwischen denen eine Druckwalze 7 drehbar gelagert ist. Die Druckwalze 7 ist im Bereich ihrer Lagerstelle in dem mit 6 bezeichneten Halterungsteil mit einem Antriebszahnrad 8 verbunden, das mit zwei weiteren Zahnrädern 9 und 10 kämmt. Die beiden Halterungsteile 5 und 6 weisen auf ihren den Innenwänden des Kassettengehäuses 1 zugewandten Seiten elastische Biege­teile mit Widerhaken an ihren Enden auf, von denen in Figur 1 nur am Halterungsteil 5 die Biegeteile 11 und 12 mit ihren Widerhaken 13 und 14 sichtbar sind. In Figur 1 sind die Halterungsteile 5 und 6 für die Druckwalze 7 nur aus Gründen der übersichtlicheren Darstellung außerhalb des Kassettenge­häuses 1 dargestellt; tatsächlich sind sie jedoch in den Nuten 3 und 4 eingepaßt.FIG. 1 shows an exemplary embodiment of the ink ribbon cassette according to the invention, the essential components of which are shown here separately from one another for the sake of clarity. The ribbon cassette is closed to the outside by a cassette housing 1, which consists essentially of a cuboid, open to one side box. Within the cassette housing 1, rib-shaped, curved guide elements 2 are formed which, as will be explained in more detail below, serve to guide a recording sheet to be printed. The cassette housing 1 has grooves 3 and 4 on its lower inner wall delimited by guide ribs for receiving two holding parts 5 and 6, between which a pressure roller 7 is rotatably mounted. The pressure roller 7 is connected in the region of its bearing in the holding part designated 6 with a drive gear 8 which meshes with two further gears 9 and 10. The two mounting parts 5 and 6 have on their sides facing the inner walls of the cassette housing 1 elastic bent parts with barbs at their ends, of which in FIG. 1 the bent parts 11 and 12 with their barbs 13 and 14 are only visible on the mounting part 5. In Figure 1, the mounting parts 5 and 6 for the printing roller 7 are shown outside of the cassette housing 1 only for the sake of clarity; in fact, however, they are fitted in grooves 3 and 4.

Als weiterer Bestandteil der Farbbandkassette ist ein Farbband auf zwei Wickelspulen 16 und 17 bevorratet, die an einem ge­meinsamen Tragkörper 18 achsparallel zueinander gehalten sind. Der Tragkörper 18 besteht aus zwei, die Wickelspulen 16 und 17 an ihren Achsenden aufnehmenden Seitenteilen 19 und 20, die über ein Verbindungsteil 21 miteinander verbunden sind. Der Tragkörper 18 bildet zusammen mit den Wickelspulen 16 und 17 eine in das Kassettengehäuse 1 der Farbbandkassette einsetz­bare, austauschbare Einheit, wobei im eingesetzten Zustand die Druckwalze 7 von dem zwischen den Wickelspulen 16 und 17 liegenden Abschnitt des Farbbandes 15 teilweise umschlungen aus einer Aussparung 22 in dem Verbindungsteil 21 herausragt und ein mit der Wickelspule 16 über eine Rutschkupplung verbundenes Zahnrad 23 mit dem Zahnrad 10 an dem Halterungsteil 6 kämmt. Die komplette Farbbandkassette läßt sich an einen hier nicht gezeigten Drucker stecken, wobei die Druckwalze 7 mit dem anliegenden Farbband 15 an einen sich längs zur Druckwalze 7 erstreckenden zeilenförmigen Aufzeichnungskopf, beispiels­weise einen Thermodruckkopf zu liegen kommt. Im einzelnen ist dies in der eingangs genannten älteren deutschen Patentanmeldung P 37 21 231.1 beschrieben und wird daher im folgenden nur kurz erläutert. Zum Bedrucken eines hier nicht gezeigten Aufzeich­nungsblattes (Papier) wird dieses mit seinem Blattanfang in einen Spalt zwischen der Unterkante 24 des Verbindungsteils 21 und der Wandung des Kassettengehäuses 1 in die Farbbandkassette eingeführt und gelangt dabei unter Führung der bogenförmigen Leitelemente 2 an die Druckwalze 7, mittels der es unter Zwischenlage des Farbbandes 15 an dem Aufzeichnungskopf vorbeigeführt und durch diesen bedruckt wird; danach gelangt das Aufzeichnungsblatt entlang der Leitelemente 2 durch den Spalt zwischen der Oberkante 25 des Verbindungsteils 21 und der Wandung des Kassettengehäuses 1 aus der Farbbandkassette wieder heraus.As a further component of the ink ribbon cassette, an ink ribbon is stored on two winding spools 16 and 17, which are held on a common support body 18 parallel to one another. The support body 18 consists of two side parts 19 and 20, which take up the winding coils 16 and 17 at their axial ends, and are connected to one another via a connecting part 21. The support body 18 forms, together with the winding spools 16 and 17, an exchangeable unit which can be inserted into the cassette housing 1 of the ink ribbon cassette, the printing roller 7, in the inserted state, being partially wrapped around the section of the ink ribbon 15 lying between the winding spools 16 and 17 from a recess 22 in protrudes from the connecting part 21 and a gear 23 connected to the winding spool 16 via a slip clutch meshes with the gear 10 on the holding part 6. The complete ribbon cassette can be plugged into a printer (not shown here), the printing roller 7 with the adjacent ink ribbon 15 coming to rest on a line-shaped recording head, for example a thermal printing head, which extends along the printing roller 7. This is specifically in the earlier German patent application mentioned at the beginning P 37 21 231.1 and is therefore only briefly explained below. To print a recording sheet (paper), not shown here, this is inserted with its beginning of the sheet into a gap between the lower edge 24 of the connecting part 21 and the wall of the cassette housing 1 in the ink ribbon cassette and reaches the printing roller 7 by guiding the arcuate guide elements 2 which it passes with the interposition of the ink ribbon 15 on the recording head and is printed by this; then the recording sheet comes out of the ink ribbon cassette along the guide elements 2 through the gap between the upper edge 25 of the connecting part 21 and the wall of the cassette housing 1.

Wie obenstehend bereits erläutert, ist der Tragkörper 18 mit den Wickelspulen 16 und 17 in das Kassettengehäuse 1 der Farbband­kassette einsetzbar bzw. aus diesem herausnehmbar. Dabei bilden die Biegeteile 11 und 12 mit ihren Widerhaken 13 und 14 an dem Halterungsteil 5 und die entsprechenden in Figur 1 nicht sicht­baren Biegeteile mit Widerhaken an dem Halterungsteil 6 eine Verriegelungseinrichtung für den Tragkörper 18. Um bei einem Farbbandwechsel den Tragkörper 18 mit den Wickelspulen 16 und 17 einfach in das Kassettengehäuse 1 einsetzen und verriegeln bzw. entriegeln und aus dem Kassettengehäuse 1 wieder heraus­nehmen zu können, ist der Tragkörper 18 an seinen beiden Seiten­teilen 19 und 20 mit Betätigungselementen 26 und 27 zum gleich­zeitigen Entriegeln und Herausnehmen bzw. Halten des Trag­körpers 18 versehen. Zur näheren Erläuterung der Betätigungs­elemente 26 und 27 und ihres Zusammenwirkens mit den Biege­teilen 11 und 12 und deren Widerhaken 13 und 14 an dem Halte­rungsteil 5 bzw. den entsprechenden Biegeteilen an dem Halte­rungsteil 6 wird im folgenden auf Figur 2 Bezug genommen, die den Tragkörper 18 aufgesteckt auf den Halterungsteilen 5 und 6 in Seitenansicht aus der in Figur 1 mit X bezeichneten Blick­richtung zeigt. Zur Vereinfachung sind in Figur 2 die Druckwalze 7 und die Wickelspulen 16 und 17 weggelassen, so daß lediglich das Seitenteil 20 des Tragkörpers 18 und das Halterungsteil 6 sichtbar sind. Das in Figur 1 mit 19 bezeichnete Seitenteil und das Halterungsteil 5 sind ebenso wie die Teile 20 und 6 aufgebaut.As already explained above, the carrier body 18 with the winding spools 16 and 17 can be inserted into or removed from the cassette housing 1 of the ink ribbon cassette. The bent parts 11 and 12 with their barbs 13 and 14 on the holder part 5 and the corresponding bent parts with barbs on the holder part 6, which are not visible in FIG. 1, form a locking device for the carrier body 18 and 17 can simply be inserted into the cassette housing 1 and locked or unlocked and removed from the cassette housing 1 again, the support body 18 is on its two side parts 19 and 20 with actuating elements 26 and 27 for simultaneously unlocking and removing or holding the support body 18 Mistake. For a more detailed explanation of the actuating elements 26 and 27 and their interaction with the bent parts 11 and 12 and their barbs 13 and 14 on the holding part 5 or the corresponding bent parts on the holding part 6, reference is made below to FIG. 2, which attaches the supporting body 18 shows on the bracket parts 5 and 6 in side view from the viewing direction designated X in Figure 1. For simplification, the pressure roller 7 and the winding spools 16 and 17 are omitted in FIG. 2, so that only the side part 20 of the support body 18 and the holder part 6 are visible. The side part designated 19 in FIG. 1 and the holding part 5 are constructed in the same way as parts 20 and 6.

Wie Figur 2 zeigt, sind an dem Halterungsteil 6 zwei parallele Biegeteile 28 und 29 gehalten, die an ihren Enden mit vonein­ander abgewandten und nach außen gerichteten Widerhaken 30 und 31 versehen sind. Die Biegeteile 28 und 29 sind dabei zusammen­hängend an einem Kunststoffkörper 32 ausgebildet, der seiner­seits an dem Halterungsteil 6 befestigt ist. Jedes der beiden Seitenteile 19 und 20 des Tragkörpers 18 - hier also das Seiten­teil 20 - weist zwei Auflaufflächen 33 und 34 für die Widerhaken 30 und 31 an den Biegeteilen 28 und 29 auf. Die Auflaufflächen 33 und 34 bilden in der mit 35 bezeichneten Richtung für das Einsetzen des Tragkörpers 18 in das Kassettengehäuse 1 eine trichterförmige Erweiterung und enden in entgegengesetzter Richtung unter Bildung von Absätzen 36 und 37, so daß beim Ein­setzen des Tragkörpers 18 in das Kassettengehäuse 1 die Wider­haken 30 und 31 an den Auflaufflächen 33 und 34 entlanggleiten, wobei die Biegeteile 28 und 29 in zunehmendem Maße ausgelenkt werden und schließlich die Widerhaken 30 und 31 in eine die Absätze 36 und 37 hintergreifende Verriegelungsstellung schnappen. Dieser Verriegelungszustand ist in Figur 2 darge­stellt. Die Auflaufflächen 33 und 34 dienen im Zusammenwirken mit den an ihnen elastisch anliegenden Widerhaken 30 und 31 als Führungshilfe beim Einsetzen des Tragkörpers 18 in das Kassettengehäuse 1, wodurch ein Verkanten des Tragkörpers und eine daraus möglicherweise resultierende Beschädigung des Farb­bandes 15 vermieden wird.As FIG. 2 shows, two parallel bent parts 28 and 29 are held on the holding part 6, which are provided at their ends with barbs 30 and 31 facing away from one another and pointing outwards. The bent parts 28 and 29 are integrally formed on a plastic body 32 which in turn is fastened to the holding part 6. Each of the two side parts 19 and 20 of the support body 18 - here the side part 20 - has two contact surfaces 33 and 34 for the barbs 30 and 31 on the bent parts 28 and 29. The ramp surfaces 33 and 34 form in the direction designated 35 for the insertion of the support body 18 in the cassette housing 1 a funnel-shaped extension and end in the opposite direction with the formation of paragraphs 36 and 37, so that when inserting the support body 18 in the cassette housing 1 Barbs 30 and 31 slide along the run-up surfaces 33 and 34, the bent parts 28 and 29 being increasingly deflected and finally the barbs 30 and 31 snap into a locking position engaging behind the shoulders 36 and 37. This locked state is shown in Figure 2. The contact surfaces 33 and 34, in cooperation with the barbs 30 and 31 resiliently attached to them, serve as a guide when inserting the support body 18 into the cassette housing 1, thereby preventing the support body from tilting and possibly damaging the ink ribbon 15.

Wie Figur 2 am Beispiel des Seitenteils 20 ferner zeigt, be­stehen die Betätigungselemente 25 und 26 an den beiden Seiten­teilen 19 und 20 jeweils aus zwei einander gegenüberliegenden Biegeelementen 38 und 39, die an dem aus Kunststoff bestehenden Seitenteil 20 angegossen sind. Dabei sind die beiden Biege­ elemente 38 und 39 in der Weise an dem Seitenteil 20 ausgebildet, daß sie sich an außen liegenden Griffstellen 40 und 41 mit dem Daumen und Zeigefinger einer Hand greifen und aufeinanderzu­drücken lassen, wobei den Widerhaken 30 und 31 gegenüberliegen­de Ansätze 42 und 43 der Biegeelemente 38 und 39 über die Ab­sätze 36 und 37 geschoben werden und dabei die Widerhaken 30 und 31 zurückdrängen. Der Tragkörper 18 läßt sich also in einfacher Weise in dem Kassettengehäuse 1 entriegeln und aus diesem herausnehmen, indem auf beiden Seiten des Tragkörpers 18 die dort einander gegenüberliegenden Biegeelemente jeweils mit Daumen und Zeigefinger aufeinanderzugedrückt werden, wobei der Tragkörper 18 entriegelt wird und gleichzeitig mit beiden Händen jeweils zwischen Daumen und Zeigefinger sicher und bequem zum Herausnehmen aus dem Kassettengehäuse 1 gehalten wird. Dabei ist zum sicheren Greifen der Betätigungselemente 26 und 27 bzw. der sie bildenden Biegeelemente z. B. 38 und 39 lediglich ein etwa fingerbreiter Spalt zwischen den Seiten­teilen 19 und 20 des Tragkörpers und der Innenwandung des Kassettengehäuses 1 erforderlich, so daß ein kompakter Aufbau der Farbbandkassette erreicht wird.As FIG. 2 also shows using the example of the side part 20, the actuating elements 25 and 26 on the two side parts 19 and 20 each consist of two mutually opposite bending elements 38 and 39, which are molded onto the side part 20 made of plastic. Here are the two bends elements 38 and 39 formed in such a way on the side part 20 that they can be gripped and pressed against one another at the outside grip points 40 and 41 with the thumb and forefinger of one hand, the barbs 30 and 31 opposite approaches 42 and 43 of the bending elements 38 and 39 are pushed over the paragraphs 36 and 37, pushing back the barbs 30 and 31. The support body 18 can thus be unlocked and removed from the cassette housing 1 in a simple manner by pressing the opposite bending elements on both sides of the support body 18 with thumb and forefinger, the support body 18 being unlocked and simultaneously with both hands is held securely and conveniently in each case between the thumb and index finger for removal from the cassette housing 1. It is for secure gripping of the actuators 26 and 27 or the bending elements forming them z. B. 38 and 39 only an approximately finger-wide gap between the side parts 19 and 20 of the support body and the inner wall of the cassette housing 1 is required, so that a compact structure of the ribbon cassette is achieved.

Claims (5)

1. Farbbandkassette für eine Bildaufzeichnungsvorrichtung bestehend aus einem Kassettengehäuse (1), in dem eine Druck­walze (7) und ein auf zwei zur Druckwalze (7) achsparallelen Wickelspulen (16) und (17) bevorratetes Farbband angeordnet sind,
dadurch gekennzeichnet,
daß die Wickelspulen (16,17) an einem gemeinsamen Tragkörper (18) gehalten sind, daß der Tragkörper (18) in dem Kassetten­gehäuse (1) aus diesem herausnehmbar angeordnet und mittels einer Verriegelungseinrichtung (11 bis 14) verriegelt ist und daß an dem Tragkörper (18) zumindest ein Betätigungselement (26,27) zum gleichzeitigen Entriegeln und Herausnehmen des Tragkörpers (18) aus dem Kassettengehäuse (1) angeordnet ist.1. Ribbon cassette for an image recording device comprising a cassette housing (1) in which a printing roller (7) and an ink ribbon stored on two winding spools (16) and (17) axially parallel to the printing roller (7) are arranged,
characterized,
that the winding spools (16, 17) are held on a common support body (18), that the support body (18) is removably arranged in the cassette housing (1) and locked by means of a locking device (11 to 14) and that on the support body (18) at least one actuating element (26, 27) for simultaneously unlocking and removing the support body (18) from the cassette housing (1) is arranged. 2. Farbbandkassette nach Anspruch 1,
dadurch gekennzeichnet,
daß der Tragkörper (18) aus zwei, die Wickelspulen (16) und (17) an ihren Achsenden aufnehmenden Seitenteilen (19, 20) und einem die Seitenteile (19, 20) verbindenden Verbin­dungsteil (21) mit einer Aussparung (22) für die Druckwalze (7) besteht und daß an beiden Seitenteilen (19, 20) je­weils ein Betätigungselement (26, 27) angeordnet ist.2. ribbon cassette according to claim 1,
characterized,
that the support body (18) from two, the winding spools (16) and (17) on their axle ends receiving side parts (19, 20) and a side part (19, 20) connecting part (21) with a recess (22) for the Printing roller (7) and that an actuating element (26, 27) is arranged on each of the two side parts (19, 20). 3. Farbbandkassette nach Anspruch 2,
dadurch gekennzeichnet,
daß die Druckwalze (7) in dem Kassettengehäuse (1) zwischen zwei Halterungsteilen (5, 6) gelagert ist, an denen die Verriegelungseinrichtung bildende Biegeteile (11, 12; 28, 29) mit Widerhaken (13, 14; 30, 31) an ihren Enden gehalten sind und daß an den Seitenteilen (19, 20) des Tragkörpers (18) in Absätzen (36, 37) endende Auflaufflächen (33, 34) für die Widerhaken (30, 31) in der Weise ausgebildet sind, daß beim Einfügen des Tragkörpers (18) in das Kassettengehäuse (1) die Biegeteile (28, 29) ausgelenkt werden und daß in Verriegelungs­ stellung die Widerhaken (30, 31) die Absätze (36, 37) federnd hintergreifen.3. ribbon cassette according to claim 2,
characterized,
that the pressure roller (7) is mounted in the cassette housing (1) between two holder parts (5, 6), on which the locking device forming bent parts (11, 12; 28, 29) with barbs (13, 14; 30, 31) their ends are held and that on the side parts (19, 20) of the support body (18) in paragraphs (36, 37) ending surfaces (33, 34) for the barbs (30, 31) are formed in such a way that when inserting of the supporting body (18) in the cassette housing (1), the bent parts (28, 29) are deflected and that in locking position the barbs (30, 31) engage behind the shoulders (36, 37). 4. Farbbandkassette nach Anspruch 3,
dadurch gekennzeichnet,
daß die Betätigungselemente (26, 27) in Form von Biegeelementen (38, 39) ausgebildet sind, die an ihren Enden den Widerhaken (30, 31) gegenüberliegende Ansätze (42, 43) aufweisen und in Richtung auf die Widerhaken (30, 31) zu im Sinne ihrer Entrie­gelung bewegbar sind.4. ribbon cassette according to claim 3,
characterized,
that the actuating elements (26, 27) are designed in the form of bending elements (38, 39), which have ends (42, 43) opposite the barbs (30, 31) at their ends and in the direction of the barbs (30, 31) are movable in the sense of their unlocking. 5. Farbbandkassette nach Anspruch 4,
dadurch gekennzeichnet,
daß an beiden Seitenteilen (19, 20) des Tragkörpers (18) jeweils zwei Biegeelemente (38, 39) senkrecht zur Herausnahme­richtung (35) des Tragkörpers (18) aus dem Kassettengehäuse (1) aufeinanderzubewegbar angeordnet sind.5. ribbon cassette according to claim 4,
characterized,
that on both side parts (19, 20) of the support body (18) two bending elements (38, 39) perpendicular to the direction of removal (35) of the support body (18) from the cassette housing (1) are arranged to move towards each other.
EP89250012A 1988-08-26 1989-08-04 Ink ribbon cartridge Expired - Lifetime EP0355939B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829445 1988-08-26
DE3829445A DE3829445A1 (en) 1988-08-26 1988-08-26 RIBBON CASSETTE

Publications (3)

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EP0355939A2 true EP0355939A2 (en) 1990-02-28
EP0355939A3 EP0355939A3 (en) 1990-05-09
EP0355939B1 EP0355939B1 (en) 1993-01-20

Family

ID=6361917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250012A Expired - Lifetime EP0355939B1 (en) 1988-08-26 1989-08-04 Ink ribbon cartridge

Country Status (3)

Country Link
US (1) US5011310A (en)
EP (1) EP0355939B1 (en)
DE (2) DE3829445A1 (en)

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EP0679524A1 (en) * 1994-04-29 1995-11-02 Agfa-Gevaert N.V. Storage box for a cassette for a thermal printer
DE4433892B4 (en) * 1993-09-22 2006-06-29 Pentax Corp. Line printer with a thermal line print head

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JPH04126276A (en) * 1989-07-21 1992-04-27 Canon Inc Ink sheet cartridge and recorder on which the ink sheet cartridge can be loaded
DE4035598A1 (en) * 1990-11-06 1992-05-07 Siemens Ag Thermal printing ink web supply device - uses removal spacer defining relative spacing of ink web supply and take=up reels
DE4117798A1 (en) * 1991-05-30 1992-12-03 Mannesmann Ag Ink ribbon cartridge for printing - has hinged cover unit that can be swung clear to allow access to ribbon spools for replacement
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US5447380A (en) * 1992-06-01 1995-09-05 Nai Technologies, Inc. Thermal printer
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NL8501540A (en) * 1985-05-30 1986-12-16 Philips Nv MULTIFUNCTIONAL CASSETTE FOR A PRESSER.
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DE3517616A1 (en) * 1984-05-15 1985-11-21 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa TRANSMISSION MATERIAL CASSETTE
DE3721231A1 (en) * 1987-06-24 1989-01-05 Siemens Ag DEVICE FOR RECORDING IMAGE INFORMATION ON A RECORDING SHEET

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0488291A1 (en) * 1990-11-29 1992-06-03 Canon Kabushiki Kaisha Ink sheet cartridge and recording apparatus using the ink sheet cartridge
US5800084A (en) * 1990-11-29 1998-09-01 Canon Kabushiki Kaisha Ink sheet cartridge and recording apparatus using the ink sheet cartridge
DE4433892B4 (en) * 1993-09-22 2006-06-29 Pentax Corp. Line printer with a thermal line print head
EP0679524A1 (en) * 1994-04-29 1995-11-02 Agfa-Gevaert N.V. Storage box for a cassette for a thermal printer

Also Published As

Publication number Publication date
US5011310A (en) 1991-04-30
EP0355939B1 (en) 1993-01-20
DE3829445A1 (en) 1990-03-01
EP0355939A3 (en) 1990-05-09
DE58903333D1 (en) 1993-03-04

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