EP0099442A2 - Cassette à ruban encreur - Google Patents

Cassette à ruban encreur Download PDF

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Publication number
EP0099442A2
EP0099442A2 EP83100892A EP83100892A EP0099442A2 EP 0099442 A2 EP0099442 A2 EP 0099442A2 EP 83100892 A EP83100892 A EP 83100892A EP 83100892 A EP83100892 A EP 83100892A EP 0099442 A2 EP0099442 A2 EP 0099442A2
Authority
EP
European Patent Office
Prior art keywords
ring
ribbon cassette
legs
section
cassette according
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Withdrawn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
EP83100892A
Other languages
German (de)
English (en)
Other versions
EP0099442A3 (fr
Inventor
Klaus Turbon
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.)
Turbon Plastic Klaus Turbon
Original Assignee
Turbon Plastic Klaus Turbon
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 Turbon Plastic Klaus Turbon filed Critical Turbon Plastic Klaus Turbon
Publication of EP0099442A2 publication Critical patent/EP0099442A2/fr
Publication of EP0099442A3 publication Critical patent/EP0099442A3/fr
Withdrawn legal-status Critical Current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
    • 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 invention relates to an ink ribbon cassette of the type mentioned in the preamble of the main claim.
  • Ribbon cartridges are subject to a shaking movement during transport and when they are inserted into the machine, but especially during the writing program itself.
  • the ink ribbon jerks forward when the letter or character-bearing part of the machine strikes the ribbon.
  • the rotation of the unwinding mandrel must therefore be braked so that the ribbon is always passed taut in front of the letter or character-bearing part of the machine, and the ribbon should lie at a uniform height in front of the letter or character-bearing part of the machine.
  • DE-GM 80 02 752 is a ribbon cassette for typewriters and typewriters from booking machines and. Like. Known with a driven winding mandrel and a unwinding mandrel for the unused ribbon, in which the unwinding mandrel is provided with an extension or an extension around which a rubber-elastic band is wound around a stationary pin or projection for braking the unwinding mandrel. - There is also a ribbon cassette known by use, in which a ring-like brake part placed around the unwinding mandrel with approximately V-shaped legs is used, one leg of which is held on a projection of the cassette housing and the ribbon around the free end of the second leg is led.
  • This known braking device for the unwinding mandrel of the color spool is made of thin spring wire and bent in such a way that the ring-like braking part exerts a braking effect on the unwinding mandrel when the ribbon is tightened.
  • the invention has for its object to provide an ink ribbon cassette in which the braking part is not only easier and is cheaper to produce, but can also achieve a higher braking effect.
  • the invention provides for an ink ribbon cassette of the type described in the introduction that the ring-like brake part is formed from a flat plastic part and its ring-shaped section has a cross-sectional reduction on the side opposite the legs.
  • the cross-sectional reduction is located in the extension of the bisector between the two legs.
  • the cross-sectional reduction can be designed as a wedge-shaped, radial notch directed inwards from the circumference of the annular section.
  • the ribbon which is guided around a pin of the free end of one leg of the ring-like braking part, is held on the pin in such a way that it remains in its position and does not get under the leg when the ribbon is suddenly pulled off the unused ink spool, which is smoother metallic surface of a wire-formed brake part is possible.
  • the manufacture and use of the brake part of the ribbon cassette is simple in that the brake part is designed as an essentially flat part and, due to its reduction in cross-section, has a good braking effect on the unwinding mandrel. It be must not, as in the known wire design, deflect the wire from the plane parallel to the coil plane below the coil.
  • the invention is based on the idea of forming, by means of the indentation or the reduction in cross-section, the ring-like section of the braking part from two, approximately semicircular, brake shoe segments which are movable towards and away from one another, of which the segment which is the leg which is acted upon by the ribbon at its free end carries, like a swiveling brake shoe, which swings out when the ribbon is tightened and the brake is thereby released.
  • the ring-like section of the braking part is provided with a small extension or cam on its wall surrounding the unwinding mandrel and the unwinding mandrel on its peripheral section adjacent to this extension or cam has longitudinal toothing, rasterization or has a wavy surface.
  • the shoulder or cam engages in one of the recesses of the preferably tight toothing, rastering, etc. of the unwinding mandrel, so that it is locked. If the two legs of the braking part are spread apart by pivoting one ring-like section half as a result of a longitudinal pull on the ink ribbon, the shoulder or cam comes free from the toothing etc.
  • the shoulder or cam is provided on the pivotable half of the ring-like section of the braking part. Its distance from the indentation or the reduction in cross section of the ring-like section depends essentially on the depth of the toothing etc. and the size of the pivoting movement of the pivotable half of the ring-like brake section.
  • the ribbon cassette is essentially formed from a lower housing part 1 and an upper housing part 2, which are connected to one another by suitable plug connections.
  • the lower housing part has two lugs 3, 4, which are covered by the upper part, the ribbon in the right lug 3 runs in the direction of arrow 5 through the opening 6 and leaves it through the opening 7 to the space 8 between the two Approaches 3, 4 in the direction of arrow 9 to bridge.
  • the letter or character-bearing part of the machine acts on the ink ribbon.
  • the ink ribbon passes through the opening 10 into the second attachment 4 in order to reach a deflection roller 11 therefrom. From there, the ribbon is guided in the direction of arrow 12 on the winding mandrel 13.
  • the unwinding mandrel 14 is freely rotatably mounted, on the lower, reinforced area 15 of which the core of the ribbon spool Sp of the unused new ribbon is placed in a rotationally fixed or approximately rotationally fixed manner is.
  • the unwinding mandrel 14 has a section 17 which is larger in diameter than the reinforced area 15 and is provided with a groove 16.
  • the reinforced area 15 of the unwinding mandrel 14 is adjoined by a pin-like section 18 and a corrugated, also pin-like section 19 projecting beyond the top of the upper part 2.
  • the lower reinforced region 15 and the section 17 have an inner bore 20 into which a bearing pin (not shown) on the bottom 21 of the lower part 1 projects.
  • the winding mandrel 13 is driven by the typewriter, booking machine or the computer and pulls the ribbon off the spool Sp.
  • the ring-like brake part 22 serving as the braking device and its ring-shaped section 23 is placed around the section 17 of the unwinding mandrel 14 provided with the groove 16.
  • This annular section lies in the groove 16 and carries the two legs 24, 25, which can be seen in FIGS. 2 and 3, are arranged at a distance from one another.
  • the leg 25 lies with its free end 25a behind an extension or projection 26 of the lower housing part 1, so that this leg is prevented from moving counterclockwise (arrow 27).
  • the second leg 24 of the brake member 22 carries an upward pin 28 which is level with the paint tape reel Sp stands and around which the ribbon F is looped when it is pulled off the reel Sp. If a pull is exerted on the ink ribbon F in the direction of the arrows 5 and 9, the leg 24 is moved counterclockwise and the ring-shaped section 23 is opened thereby, so that no braking effect is exerted on the unwinding mandrel 14 and its section 17. The ink ribbon F can thus be pulled off the now freely rotatable spool 16.
  • the annular section 23 of the braking part 22 is placed with a prestress around the section 17 of the unwinding mandrel 14 in such a way that in the starting position and with legs 24, 25 not spread apart, a braking effect is exerted on the unwinding mandrel 14, so that the ribbon does not unintentionally roll off when shaken.
  • the ribbon F pulls in the direction of arrows 5 and 9, the unwinding mandrel 14 can rotate freely.
  • the annular section 23 of the braking part 22 has a cross-section-reducing notch 29, which is located on the extension of the bisector 30 between the legs 24, 25 on the side of the section 23 facing away from it.
  • This notch on the one hand makes the spreading effect of the legs easier, but on the other hand the braking effect on the unwinding mandrel 14 is retained.
  • the legs 24, 25 and the annular portion 23 are in a common Located level, so that the manufacture of the part 22 is simple, as is the attachment of the brake part 22 to the portion 17 of the unwinding mandrel is simple.
  • the leg 32 is wider than the leg 33, whereas the ring-like section 34 with its notch 35 has a medium width.
  • the braking part 36 according to FIG. 6 has the same or similar structure.
  • the notch 37 of the ring-like section 38 lies on the bisector 39 between the legs 40, 41, the deflecting pin 42, which may have a small stiffening wall 43, at the free end of the leg 41 is attached.
  • the indentation 37 divides the ring-like section 38 into two halves 44, 45, the inner wall 46 of the half 45, i.e. half of the ring-like section 38, which is adjacent to the leg 41 carrying the pin 43, is provided with a radially inward projection or cam 47. This can be located close to the notch 37 or closer to the leg 41 (cf. the dotted line or cam 47 ').
  • a braking mandrel 48 according to FIGS. 7 and 8 is assigned to the braking part 36 according to FIG. 6 and has a groove 50 in its foot section 49, which preferably has a rectangular cross section corresponds to the cross section of the inner region 51 forming the inner wall 46 of the ring-like section 38 of the braking part 36 according to FIG. 6.
  • the wall 52 of the groove 50 or wide groove is provided with a narrow longitudinal toothing 53 or a grid, in which the preferably triangular extension or cam 47 engages when the leg 41 and the section half 45 are in the starting position and no pull is applied to the band F in the direction of arrow G in FIG. 6.
  • the notch 29, 35, 37 in the various embodiments of the braking part forms a resiliently elastic hinge or joint between the two halves of the ring-like section 23, 34, 38 with the result that if no longitudinal tension is exerted on the band F, the half of the ring-like section of the braking part, which is connected to the leg acted upon by the band, resiliently returns to its starting position and produces the braking effect.
  • the second leg 32, 41 in FIGS. 5 and 6 is preferably thicker in cross section than the leg 33, 40 and therefore in the level of both legs is more rigid than this.
  • the cross-sectional reduction of the ring-like portion 23, 34, 38 can also have a different shape, for. B. can form a flat crescent.
  • the reduction in cross section to form a flexible joint between the two regions on both sides of this joint can also be provided on the inside of the ring-like section 23, 34, 38.
  • the position of the cross-sectional reduction 29, 35, 37 can be in a range of 180 0 and 90 0 on both sides of the bisector 30, 39; the best effect is achieved if, as explained above, the cross-sectional reduction is located on the bisector 30, 39.
  • the cassette base 55 has a cylindrical fixed projection 56, which is directed into the interior of the cassette and has a height h.
  • a sleeve 57 is rotatable, which is supported on the floor 55 and carries an intermediate floor 58 approximately at the height h from its end adjacent to the floor 55, on which the pin-like sections 59, 60 are arranged, which through a bore 61 of the
  • the upper housing part 62 protrudes so that the sleeve 57 can be rotated from above the upper part 62.
  • the outside of the sleeve 57 can in turn be corrugated, so that the coil core 63 which can be pushed onto the sleeve 57, as in the embodiment 1 can be rotated by turning the sleeve 57 by means of the section 60, but is itself freely rotatable even without the action of the brake member 57.
  • the braking part in turn consists of an annular section 64 which has a sleeve part 65 which protrudes into the interior of the sleeve 57 above the intermediate floor 58.
  • the ring-like section 64 in turn carries the two legs 66, 67, of which the outside 67a of the leg 67 abuts a stationary housing part 68 and the leg 66 is provided with an attachment 69 directed against the cassette bottom 55, around which the ink ribbon F now is laid around from the outside.
  • the ring-like section 64 has an incision or a notch 71 on the side facing away from the legs 66, 67, preferably on the bisector 70, which merges into a notch or a longitudinal incision 71a in the sleeve 57. If a pull is exerted on the ink ribbon F in the direction of the arrow 72, the region 73 of the ring-like section 64 and the corresponding region 73a of the sleeve part 65 are pressed inwards in the direction of the arrow 74 and come free from the sleeve 57, so that these can now rotate freely with the coil core 63 and the coil.
  • the inner wall 57a of the sleeve 57 can have a corrugation or toothing 73, while the outer side of the sleeve is level with the area 73 of the ring-like section Section 64 located area of the sleeve part 65 has a pin or cam 75, which comes free from the corrugation or toothing 73 when the leg 66 is pivoted in the direction of arrow 75.
  • the ring-like section 64 of the brake part can carry a short, upward-facing extension of 1-2 mm height corresponding to the sleeve part 65, which abuts the upper housing part 62, so that the leg 66 can move just below this upper part without abutting it .

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
EP83100892A 1982-07-20 1983-02-01 Cassette à ruban encreur Withdrawn EP0099442A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8220624U 1982-07-20
DE19828220624 DE8220624U1 (de) 1982-07-20 1982-07-20 Farbbandkassette

Publications (2)

Publication Number Publication Date
EP0099442A2 true EP0099442A2 (fr) 1984-02-01
EP0099442A3 EP0099442A3 (fr) 1986-05-21

Family

ID=6742036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100892A Withdrawn EP0099442A3 (fr) 1982-07-20 1983-02-01 Cassette à ruban encreur

Country Status (3)

Country Link
EP (1) EP0099442A3 (fr)
JP (1) JPS5919188A (fr)
DE (1) DE8220624U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713346U1 (de) * 1987-10-03 1987-11-19 Geha-Werke Gmbh, 3000 Hannover Adapter für den Kern des Filmbandwickels einer Farbbandkassette
CH668942A5 (en) * 1986-02-06 1989-02-15 Buettner Ag Franz Typewriter ink ribbon cassette with brake on supply reel - has cantilever spring exerting pressure on core of reel for engagement of radial tooth on axis
US4930911A (en) * 1986-04-24 1990-06-05 Taurus Impressions, Inc. Flat-bed heated finger daisy wheel hot debossing stamper
US4986678A (en) * 1989-12-05 1991-01-22 Chiman Hwang Refillable ink ribbon cartridge for use in an electronic typewriter
CH676824A5 (en) * 1988-08-30 1991-03-15 Buettner Ag Franz Abrasive friction brake

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013160A (en) * 1975-10-14 1977-03-22 A. B. Dick Company Ribbon tensioning device for ribbon cartridge
US4034935A (en) * 1975-11-19 1977-07-12 Xerox Corporation Dual level ribbon cartridge
GB2059917A (en) * 1979-10-01 1981-04-29 Daughters J R Universal ribbon cartridge
EP0043433A1 (fr) * 1980-07-03 1982-01-13 International Business Machines Corporation Cartouche de ruban comportant un ressort embrassé pour prévenir des vides et des plis sur la bobine
US4350454A (en) * 1980-08-11 1982-09-21 Ibm Patent Operations Ribbon cartridge including hub brake

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013160A (en) * 1975-10-14 1977-03-22 A. B. Dick Company Ribbon tensioning device for ribbon cartridge
US4034935A (en) * 1975-11-19 1977-07-12 Xerox Corporation Dual level ribbon cartridge
GB2059917A (en) * 1979-10-01 1981-04-29 Daughters J R Universal ribbon cartridge
EP0043433A1 (fr) * 1980-07-03 1982-01-13 International Business Machines Corporation Cartouche de ruban comportant un ressort embrassé pour prévenir des vides et des plis sur la bobine
US4350454A (en) * 1980-08-11 1982-09-21 Ibm Patent Operations Ribbon cartridge including hub brake

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Band 18, Nr. 4, September 1975, Seite 1093, Armonk, US; E.J. LENNEY: "Ribbon drag wire" *
IBM TECHNICAL DISCLOSURE BULLETIN, Band 22, Nr. 9, Februar 1980, Seite 4120, Armonk, US; S.A. OKCUOGLU: "Ribbon cartridge" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH668942A5 (en) * 1986-02-06 1989-02-15 Buettner Ag Franz Typewriter ink ribbon cassette with brake on supply reel - has cantilever spring exerting pressure on core of reel for engagement of radial tooth on axis
US4930911A (en) * 1986-04-24 1990-06-05 Taurus Impressions, Inc. Flat-bed heated finger daisy wheel hot debossing stamper
EP0242931B1 (fr) * 1986-04-24 1991-10-30 Taurus Impressions, Inc. Imprimante sérielle à estampe pour l'impression sur reliures
DE8713346U1 (de) * 1987-10-03 1987-11-19 Geha-Werke Gmbh, 3000 Hannover Adapter für den Kern des Filmbandwickels einer Farbbandkassette
CH676824A5 (en) * 1988-08-30 1991-03-15 Buettner Ag Franz Abrasive friction brake
US4986678A (en) * 1989-12-05 1991-01-22 Chiman Hwang Refillable ink ribbon cartridge for use in an electronic typewriter

Also Published As

Publication number Publication date
JPS5919188A (ja) 1984-01-31
EP0099442A3 (fr) 1986-05-21
DE8220624U1 (de) 1982-10-14

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Inventor name: TURBON, KLAUS