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EP0218500A1 - Print ribbon cassette for a printer, in particular for a thermal transfer printer - Google Patents

Print ribbon cassette for a printer, in particular for a thermal transfer printer Download PDF

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Publication number
EP0218500A1
EP0218500A1 EP86401951A EP86401951A EP0218500A1 EP 0218500 A1 EP0218500 A1 EP 0218500A1 EP 86401951 A EP86401951 A EP 86401951A EP 86401951 A EP86401951 A EP 86401951A EP 0218500 A1 EP0218500 A1 EP 0218500A1
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EP
European Patent Office
Prior art keywords
cartridge
ribbon
arm
arms
printing
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.)
Withdrawn
Application number
EP86401951A
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German (de)
French (fr)
Inventor
Jean-Pierre Deschamps
Benoît BIZET
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.)
Sagem SA
Original Assignee
Sagem SA
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Filing date
Publication date
Application filed by Sagem SA filed Critical Sagem SA
Publication of EP0218500A1 publication Critical patent/EP0218500A1/en
Withdrawn legal-status Critical Current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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/08—Ink-ribbon guides with tensioning arrangements
    • 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
    • B41J32/00—Ink-ribbon cartridges

Definitions

  • the present invention relates to a print ribbon cartridge arrangement for a printing machine, in particular for thermal transfer printing, comprising a cartridge body having: a ribbon inlet and outlet located on or in the immediate vicinity of a first side of the cartridge body; two axes for winding and unwinding the ribbon; and guide means for guiding the moving tape.
  • the mobile carriage In certain types of printing machines, and in particular in certain fast printing machines, such as for example (but not exclusively) in certain thermal transfer printing machines, it is desirable to lighten the mobile carriage as much as possible, comprising inter alia the printing means, so as to reduce the inertia and increase its speed of movement while retaining all the precision required in its positioning with respect to the printing medium.
  • the printing ribbon cartridge which is traditionally mounted on the carriage, be separated from the latter: it is then necessary for this cartridge to be mounted fixed on the machine, the carriage, and in particular the printing means, then scrolling, for the printing of each line, not only in front of the printing medium, but also in front of the ribbon.
  • Such an arrangement therefore implies that, during each printing sequence, there is presented in front of the printing medium a length of ribbon at least equal to the maximum length of the line to be printed, that is to say at least equal to the width of the print media.
  • the object of the invention is essentially to design a print ribbon cartridge which has dimensions of the same order of magnitude as conventional cartridges during their storage and arranged to, during their use, release a sufficient length of ribbon to cover a printing line, while being simple in structure and therefore relatively inexpensive, and while being arranged to possibly contain a very thin ribbon (for example of a thickness less than 12 ⁇ m) used for printing by thermal transfer .
  • a cartridge of the kind mentioned in the preamble is characterized in that it further comprises two arms situated on either side of the cartridge body and supported respectively on the two opposite sides substantially transverse to the aforesaid first side, each arm having a first end provided with sliding and pivoting connection means with the corresponding side of the cartridge body so that the arm can, from a first non-functional position (or storage position of the cartridge) in which the arm extends along the side of the cartridge body with said first end located in the vicinity of the side of the cartridge opposite the aforesaid first side and with its free end -fitted with guide means over which passes the tape - located in the vicinity of the aforesaid first side, pass, by an axial sliding followed by a rotation, to a second functional position (or position of use of the cartridge) in which the arm extends substantially in the extension of the aforesaid first side with its first end located in the vicinity of said first side, and in that it further comprises elastic means tension ticks
  • a cartridge which, with its arms folded, has general dimensions substantially identical to those of a standard cartridge embeddable on the mobile printing system, but which, with its arms extended, extends substantially over at least the entire width of the print medium and exposes a length of ribbon at least equal to the width of this print medium.
  • the connecting means provided at the first end of each arm comprise at least one guide finger capable of sliding in a gutter provided along the corresponding side of the cartridge body, blocking means preventing rotation of the arm as long as the finger is not located at the end of said gutter close to the first side of the cartridge body: a cartridge structure is thus produced which is particularly simple to manufacture, to assemble and to use, with a small number of parts constitutive.
  • each arm may also be advantageous for each arm to have a U-shaped or tubular cross-section to house and protect the portion of tape which passes through it.
  • the means for guiding the ribbon comprise Crazy rollers rolled into a barrel shape which automatically return the ribbon to its correct alignment position.
  • synchronization means comprise a idler wheel supported at one end of an arm resiliently biased so that the idler wheel is constantly held in elastic support simultaneously on the two reels of ribbon of the winding and unwinding axes.
  • the ribbon cartridge according to the invention comprises a housing 1, in the form of a flattened parallelepiped whose general dimensions correspond substantially to those of a usual cartridge intended to be loaded on the mobile carriage of the printing machine.
  • the two main faces 2 of this box support the two axes 3 of the coils on which the ribbon 4 is wound.
  • Two opposite sides A of the housing 1 are respectively equipped with two arms 5 movable in translation parallel to the sides A of the housing and in rotation.
  • Each arm 5 consists of a U-shaped piece overlapping the corresponding side A of the housing 1, as more clearly visible in FIG. 4.
  • the two branches facing the U respectively carry two projecting fingers 6, directed one towards the 'other, engaged in two respective gutters 7 dug in the main faces 2 of the housing parallel to the side A thereof.
  • the main faces 2, in the vicinity of their extreme edges bordering the sides A considered, have a thinning delimiting the shoulders 8 parallel to the gutters 7 and against which the longitudinal edges of the arms of the U-shaped arms can bear.
  • the arms 5 can only slide parallel to the sides A of the housing 1, without being able to rotate. Once the arms 5 have reached maximum extension (stops (not visible) provided at the end of the gutters 7 prevent the fingers 6 from leaving the latter), these arms are free to pivot 90 ° outwards, moving away of the housing 1, to extend approximately in the extension of one of the long sides B of the housing 1, as shown in FIG. 3.
  • the ends 5a of the arms 5 are inclined so that, in the functional printing position shown in FIG. 3, the exposed part of the ribbon 4 is moved away from the edge of the case 1.
  • rollers 91 at the free ends of the arms 5 rollers 92 at the elbows of the arms 5; rollers 93 at the ends of the arms 5 carrying the aforementioned fingers 6; rollers 94 in the vicinity of the coils 10 on which the ribbon is wound.
  • means 11 for keeping the ribbon under tension comprise rollers 9 sur mounted on springs 12; the rollers 95 are thus free to oscillate between two extreme positions as a function of the force exerted by the ribbon and maintain the latter with a substantially constant tension.
  • the reel 10 on the left is receiving (driving) and the roller 95 on the left is fully pushed in at the end-of-travel stop, while the reel 10 on the right being supplying, the roller 95 on the left oscillates around a position d balance which ensures the constant tension of the ribbon.
  • openings 13 are provided, for the passage of the tape 4, in the sides A of the housing 1, in the vicinity of their junction with the side B.
  • the ribbon 4 has been shown in solid lines for its visible part and in dashes for its hidden part.
  • the tape 4 travels permanently away from external damage and is only accessible between the rollers 91 of the free ends of the arms 5.
  • the length of the arms 5 -and therefore the length of the sides A of the cartridge- is determined so that the length of the accessible part of the ribbon 4 (slightly less than the distance between the rollers 91) is at least equal to the maximum length of a printing line on the printing medium (that is to say substantially the width of a sheet of paper for example).
  • the thickness of these ribbons is very small (for example less than 12 ⁇ m).
  • Such ribbons therefore do not have the transverse resistance necessary to be able to be properly guided. by the traditional grooved pebbles.
  • a disc 14 provided with a locating means for a detection member 15, connected to a signal processing circuit (not shown) making it possible to detect the rotation of the disc 14 and therefore manage the running of the ribbon, when positioning a new section of blank ribbon between the printing processes of two successive lines.
  • the disc 14 may include a marker and the detection member 14 may be an optoelectronic transmitter-receiver member associated with a pulse counting circuit.
  • an untimely unwinding of the ribbon with the risk of jamming - means are provided for synchronization of the rotation of the two coils 10.
  • These means comprise a idler wheel 16 mounted at the free end of a free arm 17, the other end of which is mounted to rotate freely on elastic return means.
  • These can advantageously be constituted by a spring leaf 18, one end of which is anchored in the housing 1 and the other end of which rotatably supports the arm 17, the spring 18 ensuring the permanent support of the wheel 16 simultaneously on the two ribbon windings of the two reels 10 respectively.
  • the ribbon cartridge which has just been described is arranged symmetrically. It is thus possible for it to assume a symmetrical operation with scrolling of the ribbon from left to right or from right to left, the two coils being respectively driven selectively.
  • the structure of the cartridge allows in particular the inversion thereof and the use of two separate longitudinal areas of the ribbon, which makes it possible to double the capacity for using the ribbon.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

La cartouche comporte deux bras (5) situés de part et d'autre du corps de cartouche, chaque bras(5)pou­vant occuper soit une première position non fonctionnelle (ou position de stockage de la cartouche) soit une posi­tion fonctionnelle (ou position d'utilisation de la car­touche). Des moyens élastiques de tension (11) sont pré­vus pour agir sur le ruban pour maintenir celui-ci tendu quelle que soit la position fonctionnelle ou non fonction­nelle occupée par les bras.

Figure imgaf001
The cartridge has two arms (5) located on either side of the cartridge body, each arm (5) being able to occupy either a first non-functional position (or cartridge storage position) or a functional position (or position d use of the cartridge). Elastic tensioning means (11) are provided to act on the ribbon to keep it taut whatever the functional or non-functional position occupied by the arms.
Figure imgaf001

Description

La présente invention concerne un agencement de cartouche de ruban d'impression pour machine imprimante, notamment pour impression par transfert thermique, compor­tant un corps de cartouche possédant : une entrée et une sortie de ruban situées sur ou au voisinage immédiat d'un premier côté du corps de cartouche ; deux axes pour l'en­roulement et le dévidement du ruban ; et des moyens de guidage pour guider le ruban en déplacement.The present invention relates to a print ribbon cartridge arrangement for a printing machine, in particular for thermal transfer printing, comprising a cartridge body having: a ribbon inlet and outlet located on or in the immediate vicinity of a first side of the cartridge body; two axes for winding and unwinding the ribbon; and guide means for guiding the moving tape.

Dans certains types de machines imprimantes, et en particulier dans certaines machines imprimantes rapides, telles que par exemple (mais non exclusivement) dans cer­taines machines à impression par transfert thermique, il est souhaitable d'alléger au maximum le chariot mobile, comportant entre autres les moyens d'impression, de manière à en diminuer l'inertie et à accroître sa vitesse de dépla­cement tout en conservant toute la précision requise dans son positionnement vis-à-vis du support d'impression. Dans ce souci d'allègement, il est apparu souhaitable que la cartouche de ruban d'impression, qui est traditionnellement montée sur le chariot, soit séparée de celui-ci : il est alors nécessaire que cette cartouche soit montée fixe sur la machine, le chariot, et en particulier les moyens d'im­pression, défilant alors, pour l'impression de chaque ligne, non seulement devant le support d'impression, mais aussi devant le ruban.In certain types of printing machines, and in particular in certain fast printing machines, such as for example (but not exclusively) in certain thermal transfer printing machines, it is desirable to lighten the mobile carriage as much as possible, comprising inter alia the printing means, so as to reduce the inertia and increase its speed of movement while retaining all the precision required in its positioning with respect to the printing medium. For the sake of lightening, it has appeared desirable that the printing ribbon cartridge, which is traditionally mounted on the carriage, be separated from the latter: it is then necessary for this cartridge to be mounted fixed on the machine, the carriage, and in particular the printing means, then scrolling, for the printing of each line, not only in front of the printing medium, but also in front of the ribbon.

Un tel agencement implique donc que, lors de chaque séquence d'impression, il soit présenté devant le support d'impression une longueur de ruban au moins égale à la longueur maximale de la ligne à imprimer, c'est - à - dire au moins égale à la largeur du support d ' impression.Such an arrangement therefore implies that, during each printing sequence, there is presented in front of the printing medium a length of ribbon at least equal to the maximum length of the line to be printed, that is to say at least equal to the width of the print media.

On peut envisager la réalisation de cartouches monobloc. Cependant, de telles cartouches seraient trop encombrantes et, par conséquent, d'un stockage difficile et coûteux, difficile à manipuler et, d'une façon géné­rale, d'un coût de revient trop élevé.We can consider the realization of cartridges monobloc. However, such cartridges would be too bulky and, consequently, difficult and expensive to store, difficult to handle and, in general, too costly.

L'invention a essentiellement pour objet de con­cevoir une cartouche de ruban d'impression qui possède des dimensions du même ordre de grandeur que des cartouches classiques lors de leur stockage et agencées pour, lors de leur utilisation, dégager une longueur suffisante de ruban pour couvrir une ligne d'impression, tout en étant de structure simple et donc relativement peu coûteuse, et tout en étant agencée pour éventuellement contenir un ruban très mince (par exemple d'une épaisseur inférieure à 12 µm) utilisé pour l'impression par transfert thermique.The object of the invention is essentially to design a print ribbon cartridge which has dimensions of the same order of magnitude as conventional cartridges during their storage and arranged to, during their use, release a sufficient length of ribbon to cover a printing line, while being simple in structure and therefore relatively inexpensive, and while being arranged to possibly contain a very thin ribbon (for example of a thickness less than 12 μm) used for printing by thermal transfer .

A ces fins, une cartouche du genre cité au pré­ambule, agencée conformément à l'invention, se caractérise en ce qu'elle comporte en outre deux bras situés de part et d'autre du corps de cartouche et supportés respective­ment sur les deux côtés opposés sensiblement transversaux au susdit premier côté, chaque bras ayant une première extrémité munie de moyens de liaison coulissante et pivotante avec le côté correspondant du corps de cartouche de manière que le bras puisse, d'une première position non fonctionnelle (ou position de stockage de la cartouche) dans laquelle le bras s'étend le long du côté du corps de cartouche avec ladite première extrémité située au voisinage du côté de la cartouche opposé au susdit premier côté et avec son extrémité libre -munie de moyens de guidage sur lesquels passe le ruban- située au voisinage du susdit premier côté, passer, par un coulissement axial suivi d'une rotation, à une seconde position fonctionnelle (ou position d'utilisa­tion de la cartouche) dans laquelle le bras s'étend sensi­blement dans le prolongement du susdit premier côté avec sa première extrémité située au voisinage dudit premier côté, et en ce qu'elle comporte en outre des moyens élas­ tiques de tension agissant sur le ruban pour maintenir celui-ci tendu quelle que soit la position (repliée ou étendue) des bras ainsi qu'au cours du passage des bras d'une de leurs positions à l'autre.For these purposes, a cartridge of the kind mentioned in the preamble, arranged in accordance with the invention, is characterized in that it further comprises two arms situated on either side of the cartridge body and supported respectively on the two opposite sides substantially transverse to the aforesaid first side, each arm having a first end provided with sliding and pivoting connection means with the corresponding side of the cartridge body so that the arm can, from a first non-functional position (or storage position of the cartridge) in which the arm extends along the side of the cartridge body with said first end located in the vicinity of the side of the cartridge opposite the aforesaid first side and with its free end -fitted with guide means over which passes the tape - located in the vicinity of the aforesaid first side, pass, by an axial sliding followed by a rotation, to a second functional position (or position of use of the cartridge) in which the arm extends substantially in the extension of the aforesaid first side with its first end located in the vicinity of said first side, and in that it further comprises elastic means tension ticks acting on the ribbon to keep it taut whatever the position (folded or extended) of the arms as well as during the passage of the arms from one of their positions to the other.

Ainsi, il est possible, conformément à l'inven­tion, de réaliser une cartouche qui, avec ses bras repliés, possède des dimensions générales sensiblement identiques à celles d'une cartouche standard embarquable sur le système d'impression mobile, mais qui, avec ses bras déployés, s'étend sensiblement sur au moins toute la largeur du sup­port d'impression et expose une longueur de ruban au moins égale à la largeur de ce support d'impression.Thus, it is possible, in accordance with the invention, to produce a cartridge which, with its arms folded, has general dimensions substantially identical to those of a standard cartridge embeddable on the mobile printing system, but which, with its arms extended, extends substantially over at least the entire width of the print medium and exposes a length of ribbon at least equal to the width of this print medium.

Avantageusement, dans une telle cartouche les moyens de liaison prévus à la première extrémité de chaque bras comprennent au moins un doigt de guidage apte à cou­lisser dans une gouttière prévue le long du côté corres­pondant du corps de cartouche, des moyens de blocage em­pêchant la rotation du bras tant que le doigt n'est pas situé à l'extrémité de ladite gouttière proche du premier côté du corps de cartouche : on réalise ainsi une struc­ture de cartouche particulièrement simple à fabriquer, à monter et à utiliser, avec un petit nombre de pièces constitutives.Advantageously, in such a cartridge, the connecting means provided at the first end of each arm comprise at least one guide finger capable of sliding in a gutter provided along the corresponding side of the cartridge body, blocking means preventing rotation of the arm as long as the finger is not located at the end of said gutter close to the first side of the cartridge body: a cartridge structure is thus produced which is particularly simple to manufacture, to assemble and to use, with a small number of parts constitutive.

Il peut être également avantageux que chaque bras possède une section transversale en U ou tubulaire pour abriter et protéger la portion de ruban qui le tra­verse.It may also be advantageous for each arm to have a U-shaped or tubular cross-section to house and protect the portion of tape which passes through it.

Dans un mode de réalisation intéressant notamment pour des rubans très minces (tels que ceux destinés aux machines à impression thermique) qui ne possèdent pas une raideur transversale suffisante pour pouvoir être guidés par appui contre un plateau de guidage, les moyens de guidage du ruban comprennent des galets fous renflés en forme de tonneau qui assurent un rappel automatique du ruban dans sa position d'alignement correcte.In an advantageous embodiment in particular for very thin ribbons (such as those intended for thermal printing machines) which do not have a sufficient transverse stiffness to be able to be guided by pressing against a guide plate, the means for guiding the ribbon comprise Crazy rollers rolled into a barrel shape which automatically return the ribbon to its correct alignment position.

Enfin, pour éviter tout incident de fonctionne­ment dû à un manque de synchronisme des rotations respec­tives des bobines débitrice et réceptrice du ruban, on prévoit, en outre, des moyens de synchronisation de la vitesse périphérique du ruban sur l'axe d'enroulement et sur l'axe de dévidement, afin d'éviter toute tension ou tout flou du ruban en cours de déplacement ; avantageuse­ment de tels moyens de synchronisation comprennent une roue folle supportée à une extrémité d'un bras rappelé élastique­ment de manière telle que la roue folle soit constamment maintenue en appui élastique simultanément sur les deux bobines de ruban des axes d'enroulement et de déroulement.Finally, to avoid any operational incident due to a lack of synchronism of the respective rotations of the ribbon supply and take-up reels, means are also provided for synchronizing the peripheral speed of the ribbon on the winding axis and on the unwinding axis, to avoid any tension or blurring of the ribbon during movement; advantageously, such synchronization means comprise a idler wheel supported at one end of an arm resiliently biased so that the idler wheel is constantly held in elastic support simultaneously on the two reels of ribbon of the winding and unwinding axes.

L'invention sera mieux comprise à la lecture de la description détaillée qui suit d'un mode de réalisa­tion préféré, donné uniquement à titre d'exemple illustra­tif sans aucun caractère limitatif ; dans cette description, on se réfère aux dessins annexés sur lesquels :

  • - Les figures 1 et 2 sont des vues schématiques de côté d'une cartouche de ruban d'impression, agencée conformément à l'impression, montrée respectivement en posi­tion de stockage et dans une position intermédiaire ;
  • - La figure 3 est une vue schématique de côté montrant la cassette de la fig. 1 en position fonction­nelle, une face principale de la cartouche étant enlevée pour en montrer l'agencement intérieur ; et
  • - Les figures 4 et 5 sont des vues schématiques de dessus montrant respectivement deux détails de réalisa­tion de la cartouche des figures 1 à 3.
The invention will be better understood on reading the following detailed description of a preferred embodiment, given solely by way of illustrative example without any limiting character; in this description, reference is made to the appended drawings in which:
  • - Figures 1 and 2 are schematic side views of a print ribbon cartridge, arranged in accordance with printing, shown respectively in the storage position and in an intermediate position;
  • - Figure 3 is a schematic side view showing the cassette of fig. 1 in the functional position, a main face of the cartridge being removed to show the interior arrangement; and
  • FIGS. 4 and 5 are schematic views from above respectively showing two details of the embodiment of the cartridge of FIGS. 1 to 3.

La cartouche de ruban conforme à l'invention comporte un boîtier 1, en forme de parallélépipède aplati dont les dimensions générales correspondent sensiblement à celles d'une cartouche habituelle destinée à être embarquée sur le chariot mobile de la machine imprimante. Les deux faces principales 2 de ce boîtier supportent les deux axes 3 des bobines sur lesquelles s'enroule le ruban 4.The ribbon cartridge according to the invention comprises a housing 1, in the form of a flattened parallelepiped whose general dimensions correspond substantially to those of a usual cartridge intended to be loaded on the mobile carriage of the printing machine. The two main faces 2 of this box support the two axes 3 of the coils on which the ribbon 4 is wound.

Deux côtés opposés A du boîtier 1 sont équipés respectivement de deux bras 5 mobiles en translation pa­rallèlement aux côtés A du boîtier et en rotation. Chaque bras 5 est constitué d'une pièce profilée en U chevauchant le côté A correspondant du boîtier 1, comme visible plus clairement à la figure 4. Les deux branches en regard du U portent respectivement deux doigts saillants 6, dirigés l'un vers l'autre, engagés dans deux gouttières respectives 7 creusées dans les faces principales 2 du boîtier paral­lèlement au côté A de celui-ci. En outre, les faces princi­pales 2, au voisinage de leurs bords extrêmes avoisinant les côtés A considérés, présentent un amincissement déli­mitant des épaulements 8 parallèles aux gouttières 7 et contre lesquelles peuvent prendre appui les bords longi­tudinaux des branches des bras en U.Two opposite sides A of the housing 1 are respectively equipped with two arms 5 movable in translation parallel to the sides A of the housing and in rotation. Each arm 5 consists of a U-shaped piece overlapping the corresponding side A of the housing 1, as more clearly visible in FIG. 4. The two branches facing the U respectively carry two projecting fingers 6, directed one towards the 'other, engaged in two respective gutters 7 dug in the main faces 2 of the housing parallel to the side A thereof. In addition, the main faces 2, in the vicinity of their extreme edges bordering the sides A considered, have a thinning delimiting the shoulders 8 parallel to the gutters 7 and against which the longitudinal edges of the arms of the U-shaped arms can bear.

Ainsi, dans les positions représentées aux fi­gures 1 et 2, les bras 5 ne peuvent que coulisser parallè­lement aux côtés A du boîtier 1, sans pouvoir effectuer de rotation. Une fois les bras 5 parvenus en extension maximale (des butées -non visibles- prévues en bout des gouttières 7 empêchent les doigts 6 de quitter ces der­nières), ces bras sont libres de pivoter de 90° vers l'ex­térieur, en s'écartant du boîtier 1, pour s'étendre appro­ximativement dans le prolongement d'un des grands côtés B du boîtier 1, comme représenté à la figure 3.Thus, in the positions shown in Figures 1 and 2, the arms 5 can only slide parallel to the sides A of the housing 1, without being able to rotate. Once the arms 5 have reached maximum extension (stops (not visible) provided at the end of the gutters 7 prevent the fingers 6 from leaving the latter), these arms are free to pivot 90 ° outwards, moving away of the housing 1, to extend approximately in the extension of one of the long sides B of the housing 1, as shown in FIG. 3.

Les extrémités 5a des bras 5 sont inclinées de manière que, dans la position fonctionnelle d'impression représentée à la figure 3, la partie exposée du ruban 4 soit ecartée du bord du boîtier 1.The ends 5a of the arms 5 are inclined so that, in the functional printing position shown in FIG. 3, the exposed part of the ribbon 4 is moved away from the edge of the case 1.

Des galets de renvoi 9 sont prévus aux endroits appropriés : galets 9₁ aux extrémités libres des bras 5 ; galets 9₂ aux coudes des bras 5 ; galets 9₃ aux extrémités des bras 5 portant les doigts 6 susmentionnés ; galets 9₄ au voisinage des bobines 10 sur lesquelles s'enroulent le ruban.Return rollers 9 are provided in the appropriate places: rollers 9₁ at the free ends of the arms 5; rollers 9₂ at the elbows of the arms 5; rollers 9₃ at the ends of the arms 5 carrying the aforementioned fingers 6; rollers 9₄ in the vicinity of the coils 10 on which the ribbon is wound.

En outre des moyens 11 de maintien du ruban sous tension comprennent des galets 9₅ montés sur des ressorts 12 ; les galets 9₅ sont ainsi libres d'osciller entre deux positions extrêmes en fonction de l'effort exercé par le ruban et maintiennent celui-ci avec une tension sensible­ment constante. Compte tenu du sens de défilement du ruban représenté (arbitrairement) par la flèche F sur la fig. 3, la bobine 10 de gauche est réceptrice (motrice) et le ga­let 9₅ de gauche est complètement enfoncé en butée de fin de course, tandis que la bobine 10 de droite étant débi­trice, le galet 9₅ de gauche oscille autour d'une position d'équilibre qui assure la constance de la tension du ruban.In addition, means 11 for keeping the ribbon under tension comprise rollers 9 sur mounted on springs 12; the rollers 9₅ are thus free to oscillate between two extreme positions as a function of the force exerted by the ribbon and maintain the latter with a substantially constant tension. Given the direction of travel of the ribbon represented (arbitrarily) by the arrow F in FIG. 3, the reel 10 on the left is receiving (driving) and the roller 9₅ on the left is fully pushed in at the end-of-travel stop, while the reel 10 on the right being supplying, the roller 9₅ on the left oscillates around a position d balance which ensures the constant tension of the ribbon.

Bien entendu, des ouvertures 13 sont prévues, pour le passage du ruban 4, dans les côtés A du boîtier 1, au voisinage de leur jonction avec le côté B.Of course, openings 13 are provided, for the passage of the tape 4, in the sides A of the housing 1, in the vicinity of their junction with the side B.

Sur les figures 1 et 2, le ruban 4 a été repré­senté en trait plein pour sa partie visible et en tirets pour sa partie cachée.In FIGS. 1 and 2, the ribbon 4 has been shown in solid lines for its visible part and in dashes for its hidden part.

Compte tenu de la structure en U des bras 5, le ruban 4 chemine en permanence à l'abri des atteintes ex­térieures et n'est accessible qu'entre les galets 9₁ des extrémités libres des bras 5. La longueur des bras 5 -et donc la longueur des côtés A de la cartouche- est dé­terminée de manière que la longueur de la partie accessi­ble du ruban 4 (légèrement inférieure à la distance entre les galets 9₁) soit au moins égale à la longueur maximale d'une ligne d'impression sur le support d'impression (c'est-à-dire sensiblement la largeur d'une feuille de papier par exemple).Given the U-shaped structure of the arms 5, the tape 4 travels permanently away from external damage and is only accessible between the rollers 9₁ of the free ends of the arms 5. The length of the arms 5 -and therefore the length of the sides A of the cartridge- is determined so that the length of the accessible part of the ribbon 4 (slightly less than the distance between the rollers 9₁) is at least equal to the maximum length of a printing line on the printing medium (that is to say substantially the width of a sheet of paper for example).

En particulier, dans le cas des rubans utilisés pour l'impression par transfert thermique, l'épaisseur de ces rubans est très faible (par exemple inférieure à 12 µm) De tels rubans ne possèdent donc pas la résistance trans­versale nécessaire pour pouvoir être convenablement guidés par les traditionnels galets à gorge. Pour pallier cet inconvénient, on prévoit donc que les divers galets 9, ou au moins les galets 9₁ des extrémités des bras, soient en forme de tonneau comme représentés à la figure 5 : de tels galets assurent un recentrage automatique du ruban.In particular, in the case of ribbons used for thermal transfer printing, the thickness of these ribbons is very small (for example less than 12 μm). Such ribbons therefore do not have the transverse resistance necessary to be able to be properly guided. by the traditional grooved pebbles. To overcome this drawback, provision is therefore made for the various rollers 9, or at least the rollers 9₁ at the ends of the arms, to be in the form of a barrel as shown in FIG. 5: such rollers ensure automatic re-centering of the ribbon.

En outre, sur un axe de galet au moins, par exemple sur l'axe d'un galet 9₁, est monté un disque 14 muni d'un moyen de repérage pour un organe de détection 15, relié à un circuit de traitement de signal (non représenté) permettant de détecter la rotation du disque 14 et donc de gérer le défilement du ruban, lors du positionnement d'un nouveau tronçon de ruban vierge entre les processus d'im­pression de deux lignes successives. De façon simple, le disque 14 peut comporter un repère et l'organe de détection 14 peut être un organe optoélectronique émetteur-récepteur associé à un circuit de comptage d'impulsions.In addition, on at least one roller axis, for example on the axis of a roller 9₁, is mounted a disc 14 provided with a locating means for a detection member 15, connected to a signal processing circuit (not shown) making it possible to detect the rotation of the disc 14 and therefore manage the running of the ribbon, when positioning a new section of blank ribbon between the printing processes of two successive lines. In a simple manner, the disc 14 may include a marker and the detection member 14 may be an optoelectronic transmitter-receiver member associated with a pulse counting circuit.

Pour éviter que les bobines 10 tournent avec des vitesses linéaires périphériques différentes -susceptibles d'entraîner une surtension du ruban avec risque de rupture de celui- ci ou au contraire un déroulement intempestif du ruban avec risque de bourrage-, il est prévu des moyens de synchronisation de la rotation des deux bobines 10. Ces moyens comprennent une roue folle 16 montée à l'extrémité libre d'un bras libre 17 dont l'autre extrémité est montée libre en rotation sur des moyens de rappel élastique. Ceux-­ci peuvent avantageusement être constitués par une lame de ressort 18 dont une extrémité est ancrée dans le boîtier 1 et dont l'autre extrémité supporte à rotation le bras 17, le ressort 18 assurant l'appui permanent de la roue 16 simultanément sur les deux enroulements de ruban des deux bobines 10 respectivement.To prevent the coils 10 from rotating with different peripheral linear speeds - likely to cause an overvoltage of the ribbon with the risk of breaking it or on the contrary an untimely unwinding of the ribbon with the risk of jamming - means are provided for synchronization of the rotation of the two coils 10. These means comprise a idler wheel 16 mounted at the free end of a free arm 17, the other end of which is mounted to rotate freely on elastic return means. These can advantageously be constituted by a spring leaf 18, one end of which is anchored in the housing 1 and the other end of which rotatably supports the arm 17, the spring 18 ensuring the permanent support of the wheel 16 simultaneously on the two ribbon windings of the two reels 10 respectively.

La cartouche à ruban qui vient d'être décrite est agencée de façon symétrique. Il lui est ainsi possible d'assumer un fonctionnement symétrique avec défilement du ruban de gauche à droite ou de droite à gauche, les deux bobines étant respectivement rendues motrices de façon sélective. La structure de la cartouche autorise en particulier le retournement de celle-ci et l'utilisation de deux plages longitudinales distinctes du ruban, ce qui permet de doubler la capacité d'utilisation du ruban.The ribbon cartridge which has just been described is arranged symmetrically. It is thus possible for it to assume a symmetrical operation with scrolling of the ribbon from left to right or from right to left, the two coils being respectively driven selectively. The structure of the cartridge allows in particular the inversion thereof and the use of two separate longitudinal areas of the ribbon, which makes it possible to double the capacity for using the ribbon.

Comme il va de soi et comme il résulte d'ailleurs déjà de ce qui précède, l'invention ne se limite nullement à ceux de ses modes d'application et de réalisation qui ont été plus spécialement envisagés : elle en embrasse, au contraire, toutes les variantes.As goes without saying and as it already follows from the above, the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged: on the contrary, it embraces them, all variants.

Claims (6)

1. Cartouche de ruban d'impression pour machine imprimante, notamment pour impression par transfert ther­mique, comportant un corps de cartouche (1) possédant : une entrée et une sortie de ruban (13) situées sur ou au voisinage immédiat d'un premier côté (B) du corps de cartouche ; deux axes (3) pour l'enroulement et le dévi­dement du ruban (4) ; et des moyens de guidage (9) pour guider le ruban en déplacement,
caractérisée en ce qu'elle comporte en outre deux bras (5) situés de part et d'autre du corps de cartouche et supportés respectivement sur les deux côtés opposés (A) sensiblement transversaux au susdit premier côté (B), chaque bras (5) ayant une première extrémité munie de moyens (6, 7, 8) de liaison coulissante et pivotante avec le côté (A) cor­respondant du corps de cartouche de manière que le bras (5) puisse, d'une première position non fonctionnelle (ou position de stockage de la cartouche) dans laquelle le bras s'étend le long du côté du corps de cartouche avec ladite première extrémité située au voisinage du côté de la cartouche opposé au susdit premier côté (B) et avec son extrémité libre -munie de moyens de guidage (9₁) sur lesquels passe le ruban (4)- située au voisinage du susdit premier côté, passer, par un coulissement axial suivi d'une rotation, à une seconde position fonction­nelle (ou position d'utilisation de la cartouche) dans laquelle le bras (5) s'étend sensiblement dans le prolon­gement du susdit premier côté (B) avec sa première extré­mité située au voisinage dudit premier côté,
et en ce qu'elle comporte en outre des moyens élastiques de tension (11) agissant sur le ruban (4) pour maintenir celui-ci tendu quelle que soit la position (repliée ou étendue) des bras (5) ainsi qu'au cours du passage des bras d'une de leurs positions à l'autre,
ce grâce à quoi il est possible de réaliser une cartouche qui, avec ses bras repliés, possède des dimensions géné­rales sensiblement identiques à celles d'une cartouche standard embarquable sur le système d'impression mobile, mais qui, avec ses bras déployés, s'étend sensiblement sur au moins toute la largeur du support d'impression et expose une longueur de ruban au moins égale à la largeur de ce support d'impression.1. Printing ribbon cartridge for a printing machine, in particular for thermal transfer printing, comprising a cartridge body (1) having: a ribbon inlet and outlet (13) located on or in the immediate vicinity of a first side (B) of the cartridge body; two axes (3) for winding and unwinding the ribbon (4); and guide means (9) for guiding the moving tape,
characterized in that it further comprises two arms (5) located on either side of the cartridge body and supported respectively on the two opposite sides (A) substantially transverse to the above first side (B), each arm (5 ) having a first end provided with means (6, 7, 8) for sliding and pivoting connection with the corresponding side (A) of the cartridge body so that the arm (5) can, from a first non-functional position (or cartridge storage position) in which the arm extends along the side of the cartridge body with said first end situated in the vicinity of the side of the cartridge opposite the aforesaid first side (B) and with its free end provided with guide means (9₁) over which the tape (4) passes - located in the vicinity of the aforesaid first side, pass, by axial sliding followed by rotation, to a second functional position (or position of use of the cartridge) in which the arm (5) extends substantially da ns the extension of the aforesaid first side (B) with its first end situated in the vicinity of said first side,
and in that it further comprises elastic tensioning means (11) acting on the strip (4) to keep the latter taut whatever the position (folded or extended) of the arms (5) as well as during of the passage of the arms from one of their positions to the other,
what makes it possible to make a cartridge which, with its arms folded, has general dimensions substantially identical to those of a standard cartridge which can be loaded onto the mobile printing system, but which, with its arms extended, extends substantially over at least the entire width of the support d printing and exposes a length of ribbon at least equal to the width of this printing medium. 2. Cartouche selon la revendication 1, caracté­risée en ce que les moyens de liaison prévus à la première extrémité de chaque bras comprennent au moins un doigt de guidage (6) apte à coulisser dans une gouttière (7) prévue le long du côté correspondant (A) du corps de cartouche (1), des moyens de blocage (8) empêchant la rotation du bras tant que le doigt n'est pas situé à l'extrémité de ladite gouttière proche du premier côté (B) du corps de cartouche.2. Cartridge according to claim 1, characterized in that the connecting means provided at the first end of each arm comprise at least one guide finger (6) capable of sliding in a gutter (7) provided along the corresponding side ( A) of the cartridge body (1), locking means (8) preventing rotation of the arm until the finger is located at the end of said gutter close to the first side (B) of the cartridge body. 3. Cartouche selon la revendication 1 ou 2, ca­ractérisé en ce que chaque bras (5) possède une section transversale en U ou tubulaire pour abriter et protéger la portion de ruban (4) qui le traverse.3. Cartridge according to claim 1 or 2, characterized in that each arm (5) has a U-shaped or tubular cross section to house and protect the portion of ribbon (4) which passes through it. 4. Cartouche selon l'une quelconque des revendi­cations 1 à 3, caractérisée en ce que les moyens de guidage du ruban comprennent des galets fous (9) renflés en forme de tonneau.4. Cartridge according to any one of claims 1 to 3, characterized in that the tape guide means comprise idle rollers (9) swollen in the shape of a barrel. 5. Cartouche selon l'une quelconque des revendica­tions 1 à 4, caractérisée en ce qu'elle comporte, en outre, des moyens (16, 17, 18) de synchronisation de la vitesse linéaire périphérique du ruban sur l'axe d'enroulement et sur l'axe de dévidement, afin d'éviter toute tension ou tout flou du ruban en cours de déplacement.5. Cartridge according to any one of claims 1 to 4, characterized in that it further comprises means (16, 17, 18) for synchronizing the peripheral linear speed of the ribbon on the winding axis and on the unwinding axis, in order to avoid any tension or blurring of the ribbon during movement. 6. Cartouche selon la revendication 5, caractéri­sée en ce que les moyens de synchronisation comprennent une roue folle (16) supportée à une extrémité d'un bras (17) rappelé élastiquement (18) de manière telle que la roue folle soit constamment maintenue en appui élastique simultanément sur les deux bobines de ruban (10) des axes d'enroulement et de déroulement.6. Cartridge according to claim 5, characterized in that the synchronization means comprise a idler wheel (16) supported at one end of an arm (17) resiliently biased (18) so that the idler wheel is constantly maintained in elastic support simultaneously on the two reels of tape (10) of the winding and unwinding axes.
EP86401951A 1985-09-05 1986-09-05 Print ribbon cassette for a printer, in particular for a thermal transfer printer Withdrawn EP0218500A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8513205A FR2586616B1 (en) 1985-09-05 1985-09-05 PRINT TAPE CARTRIDGE FOR PRINTING MACHINE, PARTICULARLY FOR THERMAL TRANSFER PRINTING
FR8513205 1985-09-05

Publications (1)

Publication Number Publication Date
EP0218500A1 true EP0218500A1 (en) 1987-04-15

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Application Number Title Priority Date Filing Date
EP86401951A Withdrawn EP0218500A1 (en) 1985-09-05 1986-09-05 Print ribbon cassette for a printer, in particular for a thermal transfer printer

Country Status (4)

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US (1) US4770553A (en)
EP (1) EP0218500A1 (en)
DK (1) DK424186A (en)
FR (1) FR2586616B1 (en)

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WO2016160422A1 (en) * 2015-03-27 2016-10-06 Illinois Tool Works, Inc. Printer device for thermal printing or embossing

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US5501536A (en) * 1988-11-10 1996-03-26 Kleve; Robert E. Typewriter cartridge apparatus having an outer housing with inner loop attached ribbon cartridge
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Also Published As

Publication number Publication date
FR2586616A1 (en) 1987-03-06
DK424186A (en) 1987-03-06
DK424186D0 (en) 1986-09-04
FR2586616B1 (en) 1990-08-10
US4770553A (en) 1988-09-13

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