EP0094905A1 - Ink ribbon cartridge for typewriters - Google Patents

Ink ribbon cartridge for typewriters Download PDF

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Publication number
EP0094905A1
EP0094905A1 EP83810163A EP83810163A EP0094905A1 EP 0094905 A1 EP0094905 A1 EP 0094905A1 EP 83810163 A EP83810163 A EP 83810163A EP 83810163 A EP83810163 A EP 83810163A EP 0094905 A1 EP0094905 A1 EP 0094905A1
Authority
EP
European Patent Office
Prior art keywords
cassette
reel
ribbon
typewriter
intended
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
EP83810163A
Other languages
German (de)
French (fr)
Other versions
EP0094905B1 (en
Inventor
Errick Guillaume
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.)
Hermes Precisa International SA
Original Assignee
Hermes Precisa International SA
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 Hermes Precisa International SA filed Critical Hermes Precisa International SA
Publication of EP0094905A1 publication Critical patent/EP0094905A1/en
Application granted granted Critical
Publication of EP0094905B1 publication Critical patent/EP0094905B1/en
Expired 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/52—Braking devices therefor
    • 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 printing ribbon cassette for a typewriter, consisting of a housing containing a supply reel on which the ribbon is wound and a take-up reel cooperating with drive means and intended to receive the used ribbon, means for braking the supply reel being provided for producing a tension of the ribbon between the two reels, this cassette comprising a blocking mechanism for the take-up reel intended to prevent the unwinding of this reel when the cassette is removed from the typewriter, this mechanism comprising a locking lever whose spout cooperates elastically with the teeth of a toothed wheel.
  • a cassette of this kind is already known (European patent application No. 0042955).
  • two locking levers are integral with the take-up reel and cooperate with a toothing carried by the casing of the cassette.
  • This arrangement has the disadvantage that the locking levers, in rotation when the cassette is mounted on the machine, cannot be moved away from the teeth in a simple manner.
  • this arrangement makes the manufacture and assembly of the housing and the take-up reel complicated.
  • the object of the present invention is to remedy these drawbacks and it is characterized, for this purpose, in that the toothed wheel is integral with the take-up reel and in that the blocking lever came in one piece with the housing, this lever comprising an exposed portion for cooperating with a member intended to disengage said spout from the toothing when the cassette is mounted on the typewriter.
  • the ribbon cassette comprises a housing 1 comprising a cover 3 which fits onto a bottom 2, a supply reel 4 on which a printing ribbon 6 is wound and a take-up reel 5 around which the used ribbon is wound.
  • the supply reel 4 is superimposed coaxially with the take-up reel 5, which is rotated by drive means 7 external to the cassette.
  • the supply reel 4 has braking means for producing a certain tension in the printing ribbon 6.
  • These braking means are constituted by a spring steel wire 8 comprising a braking loop 31 acting on the hub 12 of the supply coil 4, with one end 9 anchored in the housing, with one end 10 having a spout 11
  • the printing ribbon 6 forms a loop passing around the folded end 10 of the steel wire 8 guided in height by the spout 11 before being driven on the guide 13 and through the optical reader 14.
  • the optical reader 14 intended to detect the end of the ribbon. 6 comprises a light source 15, an optoelectronic detector 16 and a light conducting member 17.
  • the source 15 and the detector 16 are fixed to the typewriter, while the member 17 came in one piece with the bottom 2 of casing 3 of the cassette.
  • This body is constituted by two light guides 18 and 19 of prismatic shape.
  • the upper ends of the two guides have two faces oriented substantially at 45 o from the axis of the guides so as to reflect the light from one of the guides towards the other.
  • the printing ribbon 6 passes between the two upper faces of the light guides 18 and 19. It is normally opaque, but has a transparent termination. When this termination reaches the optical reader 17, the light flux coming from the source 15 is transmitted by the ribbon and the other guide 19 to reach the optoelectronic detector 16.
  • the latter emits a signal at this moment, capable of acting, after adequate amplification, on the one hand on a switch not shown allowing the printing to stop and on the other hand on an optical or sound signaling device, not illustrated.
  • the case 1 has two extensions 20 and 21, the ends of which are open and have guide pieces 22 and 23.
  • the portion of tape 6 located outside the case 1 between the guide pieces 22 and 23 is intended to be engaged in a fork and a tape guide, not shown, of a typewriter designed to receive the cassette.
  • the ribbon then passes over a guide piece 24 and is wound on the take-up reel 5.
  • the cassette has a blocking mechanism 25 of the take-up reel 5 intended to prevent the unwinding of the latter when the cassette is removed from the machine. to write.
  • This mechanism 25 is constituted by a lever 26 comprising a spout 27 intended to engage between the teeth 28 of a toothed wheel 29 angularly integral with the take-up reel 5.
  • the lever 26 is made of an elastic material, for example a resin synthetic, and came in one piece with the bottom 2 of the housing 1. It is arranged so as to press its beak 27 in a flexible manner against the toothing 28.
  • the housing 1 has for this purpose an opening 32 for passage of the member 30 and the lever 26, coming in one piece with the edge of this opening, extends towards the center of the latter.

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  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

1. Cassette for printed ribbon for a typewriter, constituted by a case (1) including a supply spool (4) on which the ribbon (6) is wound on and a receiving spool (5) engageable with drive means (7) and intended to receive the used ribbon, break means (31) for the supply spool (4) to produce a tension of the ribbon between the two spools, this cassette comprising a blocking mechanism (25) of the receiving spool (5) intended to prevent the unwinding of this spool, when the cassette is withdrawn from the typewriter, this mechanism comprising a blocking lever (26) with a nose (27) which enters elastically in direct contact with the teeth (28) of a toothed wheel (29), characterized in that the toothed wheel (29) is integral with the receiving spool (5) and in that the blocking lever (26) is in one piece with the case (1), this lever (26) comprising a portion freely exposed in order to work with a device (30) adapted to disengage said nose (27) from the teeth (28) when the cassette is mounted on the typewriter.

Description

La présente invention concerne une cassette à ruban d'impression pour machine à écrire, constituée par un boîtier renfermant une bobine débitrice sur laquelle le ruban est enroulé et une bobine réceptrice coopérant avec des moyens d'entraînement et destinée à recevoir le ruban utilisé, des moyens de freinage de la bobine débitrice étant prévus pour produire une tension du ruban entre les deux bobines, cette cassette comprenant un mécanisme de bloquage de la bobine réceptrice destiné à empêcher le déroulement de cette bobine lorsque la cassette est retirée de la machine à écrire, ce mécanisme comportant un levier de bloquage dont le bec coopère élastiquement avec la denture d'une roue dentée.The present invention relates to a printing ribbon cassette for a typewriter, consisting of a housing containing a supply reel on which the ribbon is wound and a take-up reel cooperating with drive means and intended to receive the used ribbon, means for braking the supply reel being provided for producing a tension of the ribbon between the two reels, this cassette comprising a blocking mechanism for the take-up reel intended to prevent the unwinding of this reel when the cassette is removed from the typewriter, this mechanism comprising a locking lever whose spout cooperates elastically with the teeth of a toothed wheel.

On connaît déjà une cassette de ce genre (demande de brevet européenne No. 0042955). Dans cette cassette, deux leviers de bloquage sont solidaires de la bobine réceptrice et coopèrent avec une denture portée par le boîtier de la cassette.A cassette of this kind is already known (European patent application No. 0042955). In this cassette, two locking levers are integral with the take-up reel and cooperate with a toothing carried by the casing of the cassette.

Cette disposition présente l'inconvénient que les leviers de bloquage, en rotation lorsque la cassette est montée sur la machine, ne peuvent être écartés de la denture de façon simple. En outre, cette disposition rend compliquée la fabrication et l'assemblage du boîtier et de la bobine réceptrice.This arrangement has the disadvantage that the locking levers, in rotation when the cassette is mounted on the machine, cannot be moved away from the teeth in a simple manner. In addition, this arrangement makes the manufacture and assembly of the housing and the take-up reel complicated.

La présente invention a pour objet de remédier à ces inconvénients et elle est caractérisée, à cet effet, en ce que la roue dentée est solidaire de la bobine réceptrice et en ce que Ie levier de bloquage est venu d'une pièce avec le boîtier, ce levier comportant une portion exposée pour coopérer avec un organe destiné à désengager ledit bec de la denture lors du montage de la cassette sur la machine à écrire.The object of the present invention is to remedy these drawbacks and it is characterized, for this purpose, in that the toothed wheel is integral with the take-up reel and in that the blocking lever came in one piece with the housing, this lever comprising an exposed portion for cooperating with a member intended to disengage said spout from the toothing when the cassette is mounted on the typewriter.

Le dessin annexé illustre schématiquement et à titre d'exemple une forme d'exécution d'une cassette à ruban d'impression selon l'invention.

  • La figure 1 en est une vue en plan, le boîtier étant ouvert afin de montrer les différents éléments constituant cette eassette.
  • La figure 2 est une vue latérale éclatée suivant la direction B de la figure 1.
  • La figure 3 est une coupe suivant C - C de la figure 1.
  • La figure 4 est une section suivant D - D ie la figure 1.
The accompanying drawing illustrates schematically and by way of example an embodiment of a printing ribbon cassette according to the invention.
  • Figure 1 is a plan view, the housing being opened to show the various elements constituting this eassette.
  • FIG. 2 is an exploded side view in the direction B of FIG. 1.
  • Figure 3 is a section along C - C of Figure 1.
  • Figure 4 is a section along D - D ie Figure 1.

La cassette à ruban comprend un boîtier 1 comportant un ecuvercle 3 s'adaptant sur un fond 2, une bobine débitrice 4 sur laquelle un ruban d'impression 6 est enroulé et une bobine récep trice 5 autour de laquelle le ruban usagé s'enroule.The ribbon cassette comprises a housing 1 comprising a cover 3 which fits onto a bottom 2, a supply reel 4 on which a printing ribbon 6 is wound and a take-up reel 5 around which the used ribbon is wound.

La bobine débitrice 4 est superposée coaxialement à la bobine réceptrice 5, qui est entraînée en rotation par des moyens d'entraînement 7 extérieurs à la cassette.The supply reel 4 is superimposed coaxially with the take-up reel 5, which is rotated by drive means 7 external to the cassette.

La bobine débitrice 4 comporte des moyens de freinage pour produire une certaine tension du ruban 6 d'impression. Ces moyens de freinage sont constitués par un fil d'acier ressort 8 comportant une boucle de freinage 31 agissant sur le moyeu 12 de la bobine débitrice 4, d'une extrémité 9 ancrée dans le boîtier, d'une extrémité 10 comportant un bec 11. Le ruban 6 d'impression forme une boucle passant autour de l'extrémité 10 pliée du fil d'acier 8 guidé en hauteur par le bec 11 avant d'être entraîné sur le guide 13 et à travers le lecteur optique 14.The supply reel 4 has braking means for producing a certain tension in the printing ribbon 6. These braking means are constituted by a spring steel wire 8 comprising a braking loop 31 acting on the hub 12 of the supply coil 4, with one end 9 anchored in the housing, with one end 10 having a spout 11 The printing ribbon 6 forms a loop passing around the folded end 10 of the steel wire 8 guided in height by the spout 11 before being driven on the guide 13 and through the optical reader 14.

Lorsque le ruban 6 est tendu par les moyens d'entraînement 7 agissant sur la bobine réceptrice 5, la tension du ruban dans la boucle 10 tend à ouvrir la boucle de freinage 31 de sorte que le ruban 6 peut se dérouler. A l'arrêt des moyens d'entraînement 7, la boucle de freinage 31 coopère avec le moyeu 12 pour freiner la bobine débitrice 5.When the ribbon 6 is stretched by the drive means 7 acting on the take-up reel 5, the tension of the ribbon in the loop 10 tends to open the braking loop 31 so that the ribbon 6 can be unwound. When the drive means 7 stop, the braking loop 31 cooperates with the hub 12 to brake the supply coil 5.

Le lecteur optique 14 destiné à détecter la fin du ruban . 6 comprend une source lumineuse 15, un détecteur optoélectronique 16 et un organe conducteur de lumière 17. La source 15 et le détecteur 16 sont fixés sur la machine à écrirè, tandis que l'organe 17 est venu d'une pièce avec le fond 2 du boîtier 3 de la cassette.The optical reader 14 intended to detect the end of the ribbon. 6 comprises a light source 15, an optoelectronic detector 16 and a light conducting member 17. The source 15 and the detector 16 are fixed to the typewriter, while the member 17 came in one piece with the bottom 2 of casing 3 of the cassette.

Cet organe est constitué par deux guides de lumières 18 et 19 de forme prismatique. Les extrémités supérieures des deux guides comportent deux faces orientées sensiblement à 45o de l'axe des guides de façon à réfléchir la lumière de l'un des guides vers l'autre. Le ruban d'impression 6 passe entre les deux faces supérieures des guides de lumières 18 et 19. Il est normalement opaque, mais possède une terminaison transparente. Lorsque cette terminaison atteint le lecteur optique 17, le flux lumineux provenant de la source 15 est transmis par le ruban et l'autre guide 19 pour atteindre le détecteur optoélectronique 16.This body is constituted by two light guides 18 and 19 of prismatic shape. The upper ends of the two guides have two faces oriented substantially at 45 o from the axis of the guides so as to reflect the light from one of the guides towards the other. The printing ribbon 6 passes between the two upper faces of the light guides 18 and 19. It is normally opaque, but has a transparent termination. When this termination reaches the optical reader 17, the light flux coming from the source 15 is transmitted by the ribbon and the other guide 19 to reach the optoelectronic detector 16.

Ce dernier émet à ce moment un signal, susceptible d'agir, après amplification adéquate, d'une part sur un interrupteur non illustré permettant l'arrêt de l'impression et d'autre part sur un dispositif de signalisation optique ou sonore, non illustré.The latter emits a signal at this moment, capable of acting, after adequate amplification, on the one hand on a switch not shown allowing the printing to stop and on the other hand on an optical or sound signaling device, not illustrated.

Le boitier 1 comporte deux prolongements 20 et 21 dont les extrémités sont ouvertes et comportent des pièces de guidage 22 et 23. La portion de ruban 6 se trouvant à l'extérieur du boîtier 1 entre les pièces de guidage 22 et 23 est destinée à être engagée dans une fourchette et un guide ruban, non représentés, d'une machine à écrire prévue pour recevoir la cassette. Le ruban passe ensuite sur une pièce de guidage 24 et est enroulé sur la bobine réceptrice 5. La cassette comporte un mécanisme de bloquage 25 de la bobine réceptrice 5 destiné à empêcher le déroulement de cette dernière, lorsque la cassette est retirée de la machine à écrire. Ce mécanisme 25 est constitué par un levier 26 comportant un bec 27 destiné à s'engager entre les dents 28 d'une roue dentée 29 angulairement solidaire de la bobine réceptrice 5. Le levier 26 est constitué en une matière élastique, par exemple une résine synthé tique, et est venu d'une pièce avec le fond 2 du boîtier 1. Il est agencé de façon à appuyer son bec 27 de manière souple contre la denture 28. Lors du montage de la cassette sur la machine à écrire un organe 30 solidaire du mécanisme de fixation de la cassette, non illustré, permet d'écarter le bec 27 de la denture 28 contre l'action de la force élastique exercée par le levier 26. Le boîtier 1 comporte à cet effet une ouverture 32 pour le passage de l'organe 30 et le levier 26, venu d'une pièce avec le bord de cette ouverture, s'étend vers le centre de celle-ci.The case 1 has two extensions 20 and 21, the ends of which are open and have guide pieces 22 and 23. The portion of tape 6 located outside the case 1 between the guide pieces 22 and 23 is intended to be engaged in a fork and a tape guide, not shown, of a typewriter designed to receive the cassette. The ribbon then passes over a guide piece 24 and is wound on the take-up reel 5. The cassette has a blocking mechanism 25 of the take-up reel 5 intended to prevent the unwinding of the latter when the cassette is removed from the machine. to write. This mechanism 25 is constituted by a lever 26 comprising a spout 27 intended to engage between the teeth 28 of a toothed wheel 29 angularly integral with the take-up reel 5. The lever 26 is made of an elastic material, for example a resin synthetic, and came in one piece with the bottom 2 of the housing 1. It is arranged so as to press its beak 27 in a flexible manner against the toothing 28. When the cassette is mounted on the typewriter, a member 30 integral with the cassette fixing mechanism, not illustrated, makes it possible to separate the spout 27 from the toothing 28 against the action of the elastic force exerted by the lever 26. The housing 1 has for this purpose an opening 32 for passage of the member 30 and the lever 26, coming in one piece with the edge of this opening, extends towards the center of the latter.

Il est bien entendu que le mode dé réalisation décrit ci-dessus ne présente aucun caractère limitatif et qu'il peut recevoir toutes modifications désirables sans sortir pour cela du cadre de l'invention.It is understood that the embodiment described above has no limiting character and that it can receive any desirable modifications without departing from the scope of the invention.

Claims (2)

1. Cassette à ruban d'impression pour machine à écrire, constituée par un boîtier renfermant une bobine débitrice sur laquelle le ruban est enroulé et une bobine réceptrice coopérant avec des moyens d'entraînement et destinée à recevoir le ruban utilisé, des moyens de freinage de la bobine débitrice étant prévus pour produire une tension du ruban entre les deux bobines, cette cassette comprenant un mécanisme de bloquage de la bobine réceptrice destiné à empêcher le déroulement de cette bobine lorsque la cassette est retirée de la machine à écrire, ce mécanisme comportant un levier de bloquage dont le bec coopère élastiquement avec la denture d'une roue dentée, caractérisé e en ce que la roue dentée est solidaire de la bobine réceptrice et en ce que le levier de bloquage est venue d'une pièce avec le boîtier, ce levier comportant une portion exposée pour coopérer avec un organe destiné à désengager ledit bec de la denture lors du montage de la cassette sur la machine à écrire.1. Printing tape cassette for a typewriter, consisting of a casing containing a supply reel on which the tape is wound and a take-up reel cooperating with drive means and intended to receive the used tape, braking means of the supply reel being designed to produce a tension of the ribbon between the two reels, this cassette comprising a mechanism for blocking the take-up reel intended to prevent the unwinding of this reel when the cassette is removed from the typewriter, this mechanism comprising a locking lever whose spout cooperates elastically with the toothing of a toothed wheel, characterized in that the toothed wheel is integral with the take-up reel and in that the locking lever came in one piece with the housing, this lever comprising an exposed portion for cooperating with a member intended to disengage said spout from the toothing when the cassette is mounted on the typewriter. 2. Cassette selon la revendication 1, caractérisé e en ce que le boîtier comporte une ouverture pour le passage dudit organe et en ce que le levier de bloquage, venu d'une pièce avec le bord de cette ouverture, s'étend vers le centre de celle-ci.2. Cassette according to claim 1, characterized in that the housing has an opening for the passage of said member and in that the locking lever, coming in one piece with the edge of this opening, extends towards the center of it.
EP83810163A 1982-05-14 1983-04-18 Ink ribbon cartridge for typewriters Expired EP0094905B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3006/82A CH647981A5 (en) 1982-05-14 1982-05-14 PRINTING RIBBON CASSETTE FOR TYPEWRITER.
CH3006/82 1982-05-14

Publications (2)

Publication Number Publication Date
EP0094905A1 true EP0094905A1 (en) 1983-11-23
EP0094905B1 EP0094905B1 (en) 1986-02-26

Family

ID=4246510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810163A Expired EP0094905B1 (en) 1982-05-14 1983-04-18 Ink ribbon cartridge for typewriters

Country Status (4)

Country Link
EP (1) EP0094905B1 (en)
JP (1) JPS58205789A (en)
CH (1) CH647981A5 (en)
DE (1) DE3362251D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447185A1 (en) * 1990-03-16 1991-09-18 Ncr International Inc. Printer ribbon cassette mounting apparatus
EP0719652A2 (en) * 1994-12-27 1996-07-03 Pitney Bowes, Inc. Thermal ribbon cassette for thermal printing device
EP1403086A1 (en) * 2002-09-27 2004-03-31 Brother Kogyo Kabushiki Kaisha Ribbon cassette with ink ribbon slack prevention mechanism

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60256600A (en) * 1984-06-01 1985-12-18 Matsushita Electric Ind Co Ltd Electric blower
JPS6128658U (en) * 1984-07-27 1986-02-20 シルバー精工株式会社 printing ribbon cassette
JPH0444374Y2 (en) * 1985-01-16 1992-10-20
JP2703674B2 (en) * 1991-07-19 1998-01-26 シャープ株式会社 Ribbon winding device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4210296A (en) * 1978-12-26 1980-07-01 Royal Business Machines, Inc. Ribbon cartridge with integral anti spool rotation device
US4272202A (en) * 1978-09-20 1981-06-09 Data Card Corporation Ribbon cartridge with broken unidirectional friction drive and self cleaning gears
EP0042955A1 (en) * 1980-06-27 1982-01-06 International Business Machines Corporation Anti-reversal device for printer ribbon cartridge take-up spool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413919A (en) * 1981-10-30 1983-11-08 International Business Machines Corporation Ribbon loading system for printers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272202A (en) * 1978-09-20 1981-06-09 Data Card Corporation Ribbon cartridge with broken unidirectional friction drive and self cleaning gears
US4210296A (en) * 1978-12-26 1980-07-01 Royal Business Machines, Inc. Ribbon cartridge with integral anti spool rotation device
EP0042955A1 (en) * 1980-06-27 1982-01-06 International Business Machines Corporation Anti-reversal device for printer ribbon cartridge take-up spool

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447185A1 (en) * 1990-03-16 1991-09-18 Ncr International Inc. Printer ribbon cassette mounting apparatus
EP0719652A2 (en) * 1994-12-27 1996-07-03 Pitney Bowes, Inc. Thermal ribbon cassette for thermal printing device
EP0719652A3 (en) * 1994-12-27 1997-02-19 Pitney Bowes Inc Thermal ribbon cassette for thermal printing device
EP1403086A1 (en) * 2002-09-27 2004-03-31 Brother Kogyo Kabushiki Kaisha Ribbon cassette with ink ribbon slack prevention mechanism
US7128483B2 (en) 2002-09-27 2006-10-31 Brother Kogyo Kabushiki Kaisha Ribbon cassette with ink ribbon slack prevention mechanism
CN1331684C (en) * 2002-09-27 2007-08-15 兄弟工业株式会社 Robbon box with ribbon loose-proof mechanism

Also Published As

Publication number Publication date
DE3362251D1 (en) 1986-04-03
JPH0377787B2 (en) 1991-12-11
EP0094905B1 (en) 1986-02-26
JPS58205789A (en) 1983-11-30
CH647981A5 (en) 1985-02-28

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