EP0447787A2 - Cassette À  ruban encreur avec bobines à ruban encreur rechargeables - Google Patents

Cassette À  ruban encreur avec bobines à ruban encreur rechargeables Download PDF

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Publication number
EP0447787A2
EP0447787A2 EP91101823A EP91101823A EP0447787A2 EP 0447787 A2 EP0447787 A2 EP 0447787A2 EP 91101823 A EP91101823 A EP 91101823A EP 91101823 A EP91101823 A EP 91101823A EP 0447787 A2 EP0447787 A2 EP 0447787A2
Authority
EP
European Patent Office
Prior art keywords
spool
take
bearing
ink ribbon
core
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
EP91101823A
Other languages
German (de)
English (en)
Other versions
EP0447787A3 (en
EP0447787B1 (fr
Inventor
Uwe Schmidt
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.)
OLYMPIA OFFICE VERTRIEBSGESELLSCHAFT MBH
Original Assignee
Olympia Office Vertriebsgesellschaft mbH
AEG Olympia AG
AEG Olympia Office GmbH
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 Olympia Office Vertriebsgesellschaft mbH, AEG Olympia AG, AEG Olympia Office GmbH filed Critical Olympia Office Vertriebsgesellschaft mbH
Publication of EP0447787A2 publication Critical patent/EP0447787A2/fr
Publication of EP0447787A3 publication Critical patent/EP0447787A3/de
Application granted granted Critical
Publication of EP0447787B1 publication Critical patent/EP0447787B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J32/00—Ink-ribbon cartridges

Definitions

  • the invention relates to a ribbon cassette with reloadable ribbon spools of the type specified in the preamble of claim 1.
  • Ribbon cartridges for typewriters or office machines of a similar design are subject to different design requirements, and above all they should be easy to replace by means of one-hand operation. Since they are also designed as disposable parts, it has started to replace the ribbon spools several times before the ribbon cartridges are thrown away.
  • the ribbon cassette has a hinged cover which can be locked and unlocked by means of a hand lever. According to German Offenlegungsschrift 36 23 819, this hand lever is also used to disengage the take-up spool from a spiked roller that can be driven in the cassette.
  • This take-up spool is in this case rotatably mounted on a pivoting lever under spring tension on a bearing axis.
  • the bearing axis for the take-up spool is not arranged perpendicular to the bottom of the cassette. In this way, pushing up the core of the take-up spool on the bearing axis and also crowned winding of the tape winding cannot be avoided. This can even result in the hinged lid being lifted or the ribbon transport being blocked.
  • the invention has for its object to provide a ribbon cassette with reloadable ribbon spools, in which the above-mentioned disadvantages are avoided and in which a safe winding of the ribbon roll is guaranteed until the ribbon is fully used.
  • This object is achieved by the invention characterized in claim 1.
  • FIG. 1 shows a reloadable ink ribbon cassette 1, which consists of a pot-shaped base part 3 and a cover 5 which can be closed at the opening.
  • the cover 5 can in this case be connected in an articulated manner to a side wall 7 of the base part 3 via rotary joints 9, 11 and can be firmly connected to the base part 3 by means of a locking lever 13.
  • This locking lever 13 is pivotable about an axis 15 in the base part 3 and has a control arm 17 which, with a slot-shaped recess 18, engages around a guide surface 19 on a pivot lever 21 in a form-fitting manner.
  • the pivot lever 21 can be acted upon counterclockwise about an axis 23 by means of a spring 57.
  • a take-up spool 27 is rotatably mounted about a bearing axis 25.
  • the outer winding of this take-up coil 27 is with a steel wheel 29 in drive connection, which is mounted rotatably about a bearing axis 31 and is in engagement with a gear 35 of a drive wheel 41 via a gear 33.
  • This drive wheel 41 has a cross-slot-like recess 39, in which a drive element 37 engages in a form-fitting manner.
  • This drive element 37 can be driven in a known manner by a drive motor, not shown.
  • the ink ribbon 47 coming from a supply reel 53 passes through a deflection roller 51 and a deflection edge 49 from the interior of the cassette and is then passed through the printing station again via a deflection edge 45 into the interior of the cassette, from where it then arrives via a deflection roller 43 to the take-up reel 27 .
  • the supply spool 53 is rotatably mounted in the cassette about a bearing axis 55 and is connected to a brake disk 56 in a known manner.
  • the spring 57 is hooked on the one hand with a hooking eye 60 into a hooking 59 in the bottom part 61 and on the other hand with a hooking 62 on a hooking 63 on the pivot lever 21, the spring 57 by means of a support rib 65 around the bearing 64 of the Swivel lever 21 is turned around. This deflection makes it possible to use a long spring with a slightly increasing spring characteristic.
  • FIGS. 2 to 4 show details of the bearing axis 25 and the take-up spool 27.
  • the bearing axis 25 has at its free end a radially protruding locking lug 38, against which a circumferential stop edge 32, which is arranged concentrically with the bearing bore 34 in the core 28 of the take-up spool 27, rests resiliently in the engaged position of the spiked wheel 29 with the unwinding of the take-up spool 27, in such a way that the radial play between the bearing axis 25 and the bearing bore 34 is pushed out and thus a displacement of the take-up spool 27 against the cover 5 is prevented.
  • FIG. 1 shows the change position for the two ribbon spools 27, 53.
  • FIG. 2 shows the mounting of the take-up spool 27 shortly before being attached to the bearing axis 25.
  • the core 28 is pushed onto the bearing axis 25 until the locking lug 38 has reached the stop edge 32, see the broken line in FIG. 3 after unlocking the pivot lever 21 via the hand control lever 13, the tension spring 57 pulls the pivot lever 21 until the core 28 of the take-up spool 27 comes into engagement with the sprocket wheel 29.
  • the radial play between the bearing axis 25 and the bearing bore 34 is pulled out on one side by moving the core 28 in the direction of the arrow 48, so that the locking lug 38 is pushed over the stop edge 32.
  • This prevents the core 28 with the take-up spool 27 from being pushed upwards against the cover 5. This reliably prevents the winding core from slipping up and the ribbon from being wound up soon.
  • the bearing axis 25 is fixedly arranged on the pivot lever 21 and has a flattening below a narrow, cylindrical end section 36 of a length which is somewhat larger than the length of the bearing bore 34 in the core 28 of the take-up spool 27.
  • This flattening is arranged on the side of the bearing axis 25 opposite the pin wheel 29 and enables the core 28 of the take-up spool 27 to be displaced radially.
  • the bearing bore 34 in the core 28 of the take-up spool 27 has a radial recess at its upper end 30 to form the stop edge 32.
  • the recess 30 can also be omitted if the bearing axis is made correspondingly longer.
  • the flattening required for displacement on the bearing axis 25 is formed according to FIGS. 2 and 3 in that the bearing axis 25 below the cylindrical end section 36 has a diameter with a reduced radius on one half
  • the length of the bearing axis 25 with the reduced radius is somewhat larger than the length of the bearing bore 34 in the core 28 and the reduced diameter half 40 is arranged on the side opposite the sprocket wheel 29.
  • the longitudinal edges 44, 46 on the larger diameter halves 42 of the bearing axis 25 are rounded.
  • the cores 28 designed according to the invention ensure that the take-up spool 27 is easily placed on the bearing axles 25, so that after the pivoting lever 21 has been pivoted out of the latching position, the working position of the core 28 of the take-up spool 27 is secured against axial displacement in the simplest way. This ensures trouble-free winding of the ribbon and optimal use of the ribbon.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
EP91101823A 1990-03-21 1991-02-09 Cassette à ruban encreur avec bobines à ruban encreur rechargeables Expired - Lifetime EP0447787B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4009056 1990-03-21
DE4009056A DE4009056A1 (de) 1990-03-21 1990-03-21 Farbbandkassette mit nachladbaren farbbandspulen

Publications (3)

Publication Number Publication Date
EP0447787A2 true EP0447787A2 (fr) 1991-09-25
EP0447787A3 EP0447787A3 (en) 1991-11-06
EP0447787B1 EP0447787B1 (fr) 1995-05-17

Family

ID=6402723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101823A Expired - Lifetime EP0447787B1 (fr) 1990-03-21 1991-02-09 Cassette à ruban encreur avec bobines à ruban encreur rechargeables

Country Status (2)

Country Link
EP (1) EP0447787B1 (fr)
DE (2) DE4009056A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000725A1 (fr) * 1982-08-20 1984-03-01 Facit Ab Dispositif permettant de monter de maniere amovible et rotative un rouleau sur un arbre
DE8700080U1 (de) * 1987-01-02 1987-02-19 Regentrop & Bernard GmbH, 5600 Wuppertal Farbbandkassette mit Übersetzungs- bzw. Untersetzungsgetriebe
DE3737657A1 (de) * 1987-11-06 1989-05-18 Olympia Aeg Nachladbare farbbandkassette fuer schreib- oder bueromaschinen aehnlicher bauart

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000725A1 (fr) * 1982-08-20 1984-03-01 Facit Ab Dispositif permettant de monter de maniere amovible et rotative un rouleau sur un arbre
DE8700080U1 (de) * 1987-01-02 1987-02-19 Regentrop & Bernard GmbH, 5600 Wuppertal Farbbandkassette mit Übersetzungs- bzw. Untersetzungsgetriebe
DE3737657A1 (de) * 1987-11-06 1989-05-18 Olympia Aeg Nachladbare farbbandkassette fuer schreib- oder bueromaschinen aehnlicher bauart

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Band 26, Nr. 1, Juni 1983, Seiten 299-300, New York, US; G.L. GREENLIEF et al.: "Cartridge with ribbon and correction tape guide" *

Also Published As

Publication number Publication date
EP0447787A3 (en) 1991-11-06
DE59105484D1 (de) 1995-06-22
DE4009056A1 (de) 1991-09-26
EP0447787B1 (fr) 1995-05-17

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