EP0094905B1 - Farbbandkassette für Schreibmaschinen - Google Patents

Farbbandkassette für Schreibmaschinen Download PDF

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Publication number
EP0094905B1
EP0094905B1 EP83810163A EP83810163A EP0094905B1 EP 0094905 B1 EP0094905 B1 EP 0094905B1 EP 83810163 A EP83810163 A EP 83810163A EP 83810163 A EP83810163 A EP 83810163A EP 0094905 B1 EP0094905 B1 EP 0094905B1
Authority
EP
European Patent Office
Prior art keywords
cassette
ribbon
typewriter
spool
reel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83810163A
Other languages
English (en)
French (fr)
Other versions
EP0094905A1 (de
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/de
Application granted granted Critical
Publication of EP0094905B1 publication Critical patent/EP0094905B1/de
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, braking means of the supply reel being provided for producing 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, the spout of which elastically comes into direct contact with the teeth of a toothed wheel.
  • a cassette of this type is already known (European patent application No. B1103626.8 with Publication No. 0042955.
  • two locking levers are integral with the take-up reel and cooperate with a toothing carried by the housing 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 receiving coil 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 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.
  • a tape cassette is also known (European patent application No 82107221.2 with Publication No. 0078369, having a locking lever which comes in one piece with the housing and whose spout cooperates elastically with the hub of the supply reel to request the latter and the take-up reel superimposed against a toothing integral with the casing when the cassette is removed from the machine. and 56 of the European Patent Convention.
  • 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 consist of a spring steel wire 8 comprising a braking loop 31 acting on the hub 12 of the supply coil 4, of one end 9 anchored in the housing, of one end 10 comprising 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 the 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 ° to the axis of the guides so as to reflect the light from one of the guides to 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, with a switch not shown allowing the printing to stop, and on the other hand on an optical or sound signaling device, not illustrated.
  • the housing 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 housing 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.
  • an integral member 30 of 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 the passage of the member 30 and the lever 26, coming from a pie with the edge of this opening, extends towards the center of the latter.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Claims (2)

1. Farbbandkassette für eine Schreibmaschine mit einem Gehäuse (1) für eine Abwickelspule (4), auf der das Farbband (6) aufgerollt ist, und eine Aufnahmespule (5), die mit Antriebsmitteln (7) zusammenarbeitet und dazu dient, das verbrauchte Farbband aufzunehmen, wobei 8remsmittel (31) für die Abwickelspule (4) vorgesehen sind, um eine Spannung zwischen den beiden Spulen zu erwirken, wobei die Kassette einen Blockiermechanismus (25) für die Aufnahmespule (5) aufweist, der dszu dient, das Abrollen dieser Spule zu verhindern, wenn die Kassette von der Schreibmaschine entfernt ist, und wobei dieser Mechanismus einen Blockierhebel (26) mit einer Nase (27) aufweist die elastisch in direkten Kontakt mit der Zahnung (28) eines Zahnrades (29) tritt, dadurch gekennzeichnet, dass das Zahnrad (29) fest mit der Aufnahmespule (5) verbunden ist, und dass der Blockierhebel (26) aus einem Stück mit dem Gehäuse (1) gebildet ist, wobei der Hebel (26) ein freiliegendes Teilstück aufweist, welches mit einem Organ (30) zusammenwirkt, das dazu bestimmt ist, die benannte Nase(27) beim Einführen der Kassette in die Schreibmaschine von der Zahnung (28) zu entfernen.
2. Kassette nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse (1) eine für den Durchlass des benannten Organes (30) bestimmte Offnung (32) aufweist, und dass der Blockierhebel (26) aus einem Stück mit dem Offnungsrand gebildet ist und sich zur Mitte dieser Offnung hin erstreckt.
EP83810163A 1982-05-14 1983-04-18 Farbbandkassette für Schreibmaschinen Expired EP0094905B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3006/82A CH647981A5 (fr) 1982-05-14 1982-05-14 Cassette a ruban d'impression pour machine a ecrire.
CH3006/82 1982-05-14

Publications (2)

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

Family

ID=4246510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810163A Expired EP0094905B1 (de) 1982-05-14 1983-04-18 Farbbandkassette für Schreibmaschinen

Country Status (4)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60256600A (ja) * 1984-06-01 1985-12-18 Matsushita Electric Ind Co Ltd 電動送風機
JPS6128658U (ja) * 1984-07-27 1986-02-20 シルバー精工株式会社 印字リボンカセツト
JPH0444374Y2 (de) * 1985-01-16 1992-10-20
US4971463A (en) * 1990-03-16 1990-11-20 Ncr Corporation Printer ribbon cassette mounting apparatus
JP2703674B2 (ja) * 1991-07-19 1998-01-26 シャープ株式会社 リボン巻取装置
US5619244A (en) * 1994-12-27 1997-04-08 Pitney Bowes Inc. Thermal ink cassette for a thermal printing device
JP3700692B2 (ja) * 2002-09-27 2005-09-28 ブラザー工業株式会社 リボンカセット

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078369A2 (de) * 1981-10-30 1983-05-11 International Business Machines Corporation Einlegemechanismus für Farbbandkassette

Family Cites Families (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
US4347008A (en) * 1980-06-27 1982-08-31 International Business Machines Corporation Anti-reversal backcheck for printer ribbon cartridge takeup spool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078369A2 (de) * 1981-10-30 1983-05-11 International Business Machines Corporation Einlegemechanismus für Farbbandkassette

Also Published As

Publication number Publication date
JPS58205789A (ja) 1983-11-30
DE3362251D1 (en) 1986-04-03
JPH0377787B2 (de) 1991-12-11
CH647981A5 (fr) 1985-02-28
EP0094905A1 (de) 1983-11-23

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