EP0313245B1 - Cartouche pour ruban encreur avec dispositif de réencrage - Google Patents

Cartouche pour ruban encreur avec dispositif de réencrage Download PDF

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Publication number
EP0313245B1
EP0313245B1 EP88309443A EP88309443A EP0313245B1 EP 0313245 B1 EP0313245 B1 EP 0313245B1 EP 88309443 A EP88309443 A EP 88309443A EP 88309443 A EP88309443 A EP 88309443A EP 0313245 B1 EP0313245 B1 EP 0313245B1
Authority
EP
European Patent Office
Prior art keywords
ink
ribbon
metering means
roller
container
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 - Lifetime
Application number
EP88309443A
Other languages
German (de)
English (en)
Other versions
EP0313245A3 (en
EP0313245A2 (fr
Inventor
Giorgio Solero
Giuseppe Ferrara
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.)
Telecom Italia SpA
Original Assignee
Ing C Olivetti and C SpA
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 Ing C Olivetti and C SpA filed Critical Ing C Olivetti and C SpA
Priority to AT88309443T priority Critical patent/ATE84259T1/de
Publication of EP0313245A2 publication Critical patent/EP0313245A2/fr
Publication of EP0313245A3 publication Critical patent/EP0313245A3/en
Application granted granted Critical
Publication of EP0313245B1 publication Critical patent/EP0313245B1/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
    • B41J31/00—Ink ribbons; Renovating or testing ink ribbons
    • B41J31/14—Renovating or testing ink ribbons
    • B41J31/16—Renovating or testing ink ribbons while fitted in the machine using the ink ribbons
    • 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
    • B41J32/02—Ink-ribbon cartridges for endless ribbons

Definitions

  • the present invention relates to a cartridge for an inked ribbon with a re-inking device, of the type comprising a container having a magazine for accommodating the ribbon and a pair of toothed rollers including a drive roller and a driven roller arranged for nipping the ribbon for feed movement of the ribbon, and in which the re-inking device comprises an ink reservoir for storing ink, a casing for the ink reservoir, and ink metering means in contact with the reservoir.
  • a ribbon cartridge of this kind is known from International Patent Application WO-A-85/01017, in which the drive roller is in engagement with a motive toothed roller to be rotated thereby, and in which the ink metering means distributes the ink to the drive roller for subsequent re-inking of the ribbon.
  • the drive roller operates as a distributor of ink for the ribbon, but its action will be rather irregular because the ink will tend to be concentrated in the portions of the ribbon which are directly nipped between the drive roller and the driven roller.
  • the shape of the drive roller and the driven rollers subdivided into rings is a further cause of irregularities in the distribution of the ink.
  • United States Patent US-A-4,653,947 and German Patent DE-A-35 35 876 relate to further cartridges with a re-inking device and a pair of toothed feed rollers and in which the ink flows from an ink metering means to one of the feed rollers. Also these cartridges have problems in the distribution of the ink on the ribbon.
  • the object of the present invention is therefore to provide a re-inking device for an inked ribbon in a cartridge, of low cost, which is simple, reliable and which at the same time permits more uniform re-inking of the ribbon.
  • the cartridge for an inked ribbon with a re-inking device which is characterized in that an inking roller is rotatably supported by the container at a location between the drive roller and the ink metering means and has peripheral teeth which are in engagement with the teeth of the drive roller and with the ink metering means to be driven in rotation by the drive roller.
  • Guide means project into the container and engage a portion of the ribbon to direct the ribbon towards and into contact with the teeth of the inking roller and subsequently towards the teeth of the pair of rollers.
  • the peripheral teeth of the inking roller are disposed on its entire peripheral surface and have rounded tips for substantially uniform capillary flow of the ink from the ink metering means to the inking roller and the inked ribbon.
  • the re-inking device which is generally indicated at 11 is applied by way of example to a cartridge 12 which, not being principal subject-matter of the present invention, is described only in respect of part thereof in order better to set forth the use of the re-inking device 11.
  • the cartridge 12 comprises a container 13 having abottom 14 and a series of internal walls 16, 17 and 18 such as to define a space 19.
  • the container 13 is closed upwardly by a cover 21 and is delimited by a rear wall 22, a front wall 23, a right-hand side wall 24 and a left-hand side wall 26.
  • the cartridge 12 comprises, projecting from the rear wall 22, two arms 27 and 28 which are suitably shaped and which at their ends have two apertures 29 and 31 respectively for permitting a portion of an inked ribbon 32 to pass therethrough and be guided to the outside.
  • the arms 27 and 28 are connected by a reinforcing rib 33.
  • the inked ribbon 32 is of the closed loop type and is disposed in randomly distributed turns in a magazine 34 in the container 13.
  • the ribbon 32 issues from the container 13 by way of the aperture 31, returns into the container 13 through the aperture 29 and is guided to the interior of the container by a fixed guide 39 and a guide bush 41 to be directed in tangential relationship and in contact with an inking roller 42.
  • the ribbon 32 is then engaged by a pair of rollers which are generally indicated at 43 for the undirectional feed movement and is re-introduced into the magazine 34.
  • the re-inking device 11 comprises a supply reservoir for the ink as indicated at 51 (see Figure 2), comprising a soft porous body of low density formed for example by a polyester felt pad and capable of containing the ink 50 by impregnation, and an ink metering means 52 comprising a porous but compact body of high density and of reasonable rigidity, formed for example by a felt of wool which is treated with epoxy resin.
  • the ink metering means 52 has a first portion in close contact with the supply reservoir 51 and a second portion in contact with the inking roller 42 for permitting capillary flow of the ink 50 from the reservoir 51 to the inking roller 42.
  • the reservoir for the ink or polyester felt pad 51 is protected from losing ink 50 by a casing formed by a closed cassette or box 53 which in turn is housed within the container 13 (see Figure 1).
  • the box 53 comprises two recesses 54 and 56 for accommodating two positioning pins 57 and 58 which project from the bottom 14, within the container 13, for removably fixing the box 53 to the container 13, positioning it adjacent to a portion of the ribbon 32, the guide bush 41 and the inking roller 42, as is clearly visible in Figure 1.
  • the box 53 comprises two internal blades 59 (see Figure 2) and 61 and two pins 62 and 63 arranged for positioning on the one hand the polyester felt 51 and for holding a part of the metering means 52 closely in contact against the polyester felt 51 by virtue of the compliance of the material.
  • the box 53 having the recesses 54 and 56 is formed by a bottom 64 and a series of walls 66, 67, 68, 69, 71 (see Figure 1), and 72 each having a rebate 65 at its upper edge.
  • the box 53 is closed in known fashion, for example a cover 73 is ultrasonically welded to the rebates 65 of the walls 66, 67, 68, 69, 71 and 72 after the reservoir 51 and the metering means 52 have been positioned within the box 53.
  • the box 53 comprises a lateral opening 74 (see Figure 2) to permit the metering means 52 to be passed therethrough and positioned therein.
  • the opening 74 is of a predetermined shape of frustoconical section such as to reduce and slightly compress the part of the metering means 52 which is accommodated in the opening 74, in such a way as to prevent leakage of the ink 50 contained in the reservoir 51, except for that which passes by capillary flow along the fibres of the metering means 52.
  • the ink 50 is introduced into the box 53 after the box is sealingly closed, in per se known manner, for example using a syringe system for injecting a predetermined amount which is preset such as to be completely absorbed by the reservoir 51 and the metering means 52, by way of a small hole 75 provided in the wall 66.
  • the internal blades 59 and 61 are spaced from the wall 66 in such a way as to form a space 80 which is kept at ambient pressure by virtue of the presence of the hole 75 and capable of ensuring a normal discharge flow of ink 50 by way of the metering means 52.
  • the pins 62 and 63 are spaced from the wall 68 to form a space 85 adjacent to the aperture 74.
  • the pins 62 and 63 of the box and the opening 74 define a reference axis 70 for the metering means 52, which is substantially parallel to the wall 68.
  • the positioning pins 57 (see Figure 1) and 58 of the container 13 predetermine a position of the box 53 within the container such that the axis 70 of the metering means 52 is disposed along a plane intermediate reference plane tangential to the periphery and a plane passing through the axis of the inking roller 42, both parallel to the wall 68.
  • the projecting portion of the metering means 52 is obliged to flex and bears against the outside surface of the teeth 76 of the roller 42. In addition it tends to return to its original position due to the resiliency of the materials of which it is composed and therefore applies a pressure in the region of contact with the outside surface of the teeth 76, which is sufficient to ensure that the ink passes on to the teeth 76.
  • the inking roller 42 is rotatable on a pin 77 which projects from the bottom 14, and has the tips of the teeth 76 of rounded section (see Figure 4) so as not to cause wear on the ribbon 32 and the portion of the metering means 52 (see Figure 1) which are held in contact with the teeth 76. Capillary flow of the ink 50 from the metering means 52 to the outside surface of the teeth 76 and subsequently to the ribbon 32 therefore takes place in a smooth and reliable fashion.
  • the pair of rollers 43 comprise a toothed drive roller 78 which is always engaged with the inking roller 42 and a toothed drive roller 79.
  • the drive and driven rollers 78 and 79 are each formed in one piece comprising three toothed wheels or gears which are spaced from each other by two sleeve portions 81 (see Figure 3) and 82.
  • the drive roller 78 is rotatable between an opening 83 in the bottom 14 and an opening 84 in the cover 21 and can be connected in per se known manner for example to a drive shaft 86 which is substantially similar to the drive shaft 66 shown in Figure 3 of Italian patent No 1 024 899 when the cartridge 12 is mounted on a typewriter.
  • the drive roller 78 is supported by a support 87 having two flanges 88 with semicylindrical seats 90 engaged with the two sleeve portions 81 and a pin 89 which is housed in a cylindrical seat 91 in the bottom 14.
  • the drive roller 78 has a gripping portion 92 which projects from the cover 21 and which is capable of being manually rotated for manual feed of the inked roller 32.
  • the driven roller 79 is rotatable by means of the end portions 93 and 94 which are accommodated in respective slots 96 and 97 in the bottom 14 and the cover 21.
  • the driver roller 79 is supported by a pressing support 98 having two flanges 99 with semicylindrical seats 100 engaged with the two sleeves 82 and a cylindrical pin 101 housed in a radial groove 102 in the bottom 14.
  • a leaf spring 103 has one end 104 (see Figure 1) received in a recess 105 in the container 13, with the other end 106 engaged with the pressing means 98 and an intermediate portion co-operating with a preloading member 107 of the container 13 for holding the driven toothed roller 79 constantly in mesh and engaged with the drive toothed roller 78.
  • the structure of the rollers 78 and 79 and the associated supports 87 and 98 as described hereinbefore is optimised to produce feed movement of the ribbon without obstruction and jamming in per se known manner.
  • the cover 21 (see Figure 3) comprises ribs 108 capable of co-operating with the upper portions of the support 87, the pressing means 98 and the rollers 78 and 79 to prevent undesired movements of the various components when the cartridge 12 is not mounted on the typewriter.
  • the guide bush 41 (see Figure 1) is rotatable on a pin 109 on the bottom 14 and the ribbon 32 is engaged around the guide bush 41 to be directed towards the teeth 76 of the inking roller 42 and subsequently towards the pair of rollers 43, following an inclined path of movement as shown in Figure 4.
  • the ink metering means 52 (see Figures 1 and 2) is of substantially parallelepipedic form and is of a height equal to the height of the inking roller 42, the guide bush 41 and the inked ribbon 32.
  • the drive shaft 86 rotates with the drive roller 78 and the driven roller 79 and the inked ribbon 32 is moved with a unidirectional feed movement.
  • the projecting portion of the metering means 52 is always in contact with the teeth 76 of the inking roller 42 and the ink 50 thus flows from the ink reservoir 51 to the rounded external surface of the teeth 76.
  • the reservoir 51 and a part of the metering means 52 are housed in a closed box 53 having a single opening 74 for the metering means 52 to pass therethrough; the ink 50 cannot therefore escape from any part of the arrangement, except by way of the metering means 52.
  • the box 53 does not lose ink 50, it permits assembly of the reservoir 51 and the metering means 52, and loading of the ink 50 and subsequent storage of the box, as a unit which is separate and separable from the cartridge.
  • the cartridge 12 is designed for that purpose, it is possible to replace an exhausted box by a fresh box.
  • cartridge 12 for an inked ribbon 32 with the re-inking device 11 may be the subject of modifications and improvements both in regard to the shape and the arrangement of the various components and parts without departing from the scope of the invention.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)

Claims (16)

  1. Cartouche pour ruban encreur (32) avec dispositif de ré-encrage (11), du type comprenant un boîtier (13) doté d'un magasin (34) pour loger le ruban (32) et d'une paire de galets dentés (78, 79) comportant un galet d'entraînement (78) et un galet entraîné (79) disposés de manière à pincer le ruban dans le mouvement d'avancement du ruban, et dans laquelle le dispositif de ré-encrage (11) comprend un réservoir d'encre (51) pour stocker l'encre, un carter (53) pour le réservoir d'encre (51), et un moyen de dosage de l'encre (52) en contact avec le réservoir, caractérisée en ce que
       un galet encreur (42) rotatif est maintenu dans le boîtier en un emplacement situé entre le galet d'entraînement et le moyen de dosage de l'encre et possède des dents périphériques (76) entraînées par les dents du galet d'entraînement (78) et dont le moyen de dosage de l'encre est entraîné par rotation par le galet d'entraînement (78);
       un moyen de guidage (109, 41) est prévu dans le boîtier (13) et entraîne une partie du ruban (32) en dirigeant le ruban vers et en contact avec les dents (76) du galet encreur (42) et en conséquence vers les dents de la paire de galets (43); et
       les dents périphériques du galet encreur (42) sont disposées sur l'ensemble de sa surface périphérique et comportent des extrémités arrondies destinées à ce que le flux capillaire d'encre soit sensiblement uniforme depuis le moyen de dosage de l'encre (52) vers le galet encreur (42) et le ruban encré.
  2. Cartouche selon la revendication 1, caractérisée en ce que le carter (53) est disposé à l'intérieur du boîtier (13) et comporte une ouverture (74), et en ce que le moyen de dosage de l'encre (52) est de forme allongée et possède une première partie introduite dans l'ouverture et en contact étroit avec le réservoir (51) et une seconde partie maintenue en contact avec le galet encreur (42).
  3. Cartoucne selon la revendication 2, caractérisée en ce que le réservoir (51) pour l'encre comprend un corps poreux doux de faible densité constitué d'un patin en feutre en polyester pouvant contenir l'encre et en ce que le moyen de dosage de l'encre (52) comprend un corps poreux, compact, élastique de haute densité constitué, par un feutre de laine traité avec de la résine époxyde pouvant autoriser un flux capillaire d'encre depuis le réservoir (51) vers le galet encreur (42).
  4. Cartouche selon la revendication 3, caractérisée en ce que l'ouverture (74) est de forme prédéterminée de section décroissante afin de réduire et de comprimer légèrement la partie du moyen de dosage (52) qui est logée dans l'ouverture et d'éviter une fuite de l'encre contenue dans le réservoir (51) sauf pour ce qui passe par le moyen de dosage.
  5. Cartouche selon les revendications 3 ou 4, caractérisée en ce que la boîte (53) comporte un fond (64), une série de cloisons fermées (66, 67, 68, 69, 71) et un couvercle (73) et en ce qu'une ouverture (74) est prévue dans une cloison (67) de ladite série.
  6. Cartouche selon la revendication 5, caractérisée en ce que la boîte (53) comporte au moins une partie interne (59, 61) faisant saillie depuis le fond (64) et espacée d'une cloison (66) de la dite série de manière à former un espace (80) entre la partie interne et cette cloison, et en ce que l'espace (80) est maintenu à la pression ambiante par un trou (75) dans la cloison (66) afin de garantir un flux de décharge normale de l'encre par le moyen de dosage (52).
  7. Cartouche selon la revendication 6, caractérisée en ce que le réservoir d'encre (51) contient un corps poreux imprégné par l'encre (50) et contenant ultérieurement un moyen de positionnement (62, 63) agissant sur le moyen de dosage (52) pour assurer le contact entre la première partie du moyen de dosage (52) et le corps poreux pour permettre un flux capillaire de l'encre et pour délimiter un espace (85) situé entre la première partie du moyen de dosage et une cloison (68) de la dite série de cloisons adjacente à la dite ouverture (74).
  8. Cartouche selon l'une quelconque des revendications 3 à 7, caractérisée en ce que la seconde partie du moyen de dosage (52) appuie en position fléchie contre la surface externe des dents (76) du galet encreur (42) et reste toujours en contact avec cette surface grâce à l'élasticité du matériau dont est constitué le moyen de dosage (52).
  9. Cartouche selon l'une quelconque des revendications 1 à 8, comportant des moyens élastiques (103) prévus pour appuyer sur le galet entraîné (79) engagé avec le galet d'entraînement.
  10. Cartouche selon l'une quelconque des revendications 1 à 9, comportant une paire de tiges (109, 77) faisant saillie vers l'intérieur du boîtier, et caractérisée en ce que le moyen de guidage comporte une douille de guidage (41) montée pour pouvoir tourner autour de l'une des tiges (109), le galet encreur (42) est monté pour pouvoir tourner autour de l'autre tige (77), et le ruban encreur est engagé autour de la douille de guidage (41).
  11. Cartouche selon la revendication 10, caractérisée en ce que le ruban encreur (32) est du type en boucle fermée et est disposé en tours répartis aléatoirement dans le magasin 34 et en ce que la paire de galets (43), le galet encreur (42) et la douille de guidage (41) sont disposés entre le magasin (34) et la boîte (53).
  12. Cartouche selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le boîtier (13) possède un fond (14) duquel deux tiges de positionnement (57, 58) font saillie vers l'intérieur du boîtier (13) et peuvent être logées dans des sièges correspondants (54, 56) de la boîte (53) pour fixer de manière amovible la boîte au boîtier (13) et pour le mettre en position adjacente au galet encreur (42).
  13. Cartouche selon les deux revendications 2 et 12, caractérisée en ce que les deux tiges de positionnement (57, 58) mettent en position la boîte (53) de telle manière que la dite ouverture (74) soit située dans un plan (70) intermédiaire tangent à la périphérie et coupant l'axe du galet encreur (42) et tel que la seconde partie du moyen de dosage (52) faisant saillie de la boîte (53) fléchisse et appuie avec élasticité contre les dents (76) du galet encreur (42).
  14. Cartouche selon l'une quelconque des revendications 1 à 13, caractérisée en ce que le boîtier (13) possède un couvercle (21) et un fond (14), les galets de la paire de galets (43) comportant chacun trois roues dentées (78, 79) espacées les unes des autres par deux parties lisses (81, 82) fixes par rapport aux trois roues (78, 79), le galet d'entraînement (78) peut tourner entre deux ouvertures (83, 84) dans le fond (14) et le couvercle (21) et est tenue par un support (87) possédant deux flasques (88) avec des sièges semi-cylindriques (90) engagés avec les parties lisses respectives (81) et une tige (89) logée dans un siège cylindrique (91) du fond (14) et le galet entraîné (79) est tenu par un moyen pressant (98) possédant deux flasques (99) avec des sièges semicylindriques (100) engagés avec les parties lisses respectives (82), et une tige (101) logée dans une rainure radiale (102) du fond (14).
  15. Cartouche selon les deux revendications 9 et 14, caractérisée en ce que le moyen élastique comprend un ressort à lames (103) possédant une extrémité (104) logée dans un siège (105) du boîtier (13), l'autre extrémité (106) étant engagée avec le moyen pressant (98) et une partie intermédiaire étant engagée avec un élément de pré-charge (107) du boîtier (13).
  16. Cartouche selon l'une quelconque des revendications 1 à 15, caractérisée en ce que le galet encreur (42) le moyen de dosage de l'encre (52) et le ruban encré (32) sont de même hauteur et caractérisée en ce que le moyen de dosage de l'encre est de forme sensiblement parallélépipèdique.
EP88309443A 1987-10-20 1988-10-10 Cartouche pour ruban encreur avec dispositif de réencrage Expired - Lifetime EP0313245B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88309443T ATE84259T1 (de) 1987-10-20 1988-10-10 Farbbandkassette mit nachtraenk-vorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8767872A IT1211410B (it) 1987-10-20 1987-10-20 Cartuccia per un nastro inchiostrato con dispositivo di reinchiostra zione
IT6787287 1987-10-20

Publications (3)

Publication Number Publication Date
EP0313245A2 EP0313245A2 (fr) 1989-04-26
EP0313245A3 EP0313245A3 (en) 1989-08-30
EP0313245B1 true EP0313245B1 (fr) 1993-01-07

Family

ID=11305973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88309443A Expired - Lifetime EP0313245B1 (fr) 1987-10-20 1988-10-10 Cartouche pour ruban encreur avec dispositif de réencrage

Country Status (7)

Country Link
EP (1) EP0313245B1 (fr)
AT (1) ATE84259T1 (fr)
CA (1) CA1334564C (fr)
DE (1) DE3877319T2 (fr)
ES (1) ES2038306T3 (fr)
IT (1) IT1211410B (fr)
ZA (1) ZA887793B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005996A (en) * 1989-09-15 1991-04-09 International Business Machines Corporation Ribbon cartridge with endless ribbon reinking mechanism
IT218846Z2 (it) * 1989-11-16 1992-11-05 Incas Holding Spa Notarbartolo & gervasi
IT1266013B1 (it) * 1994-05-26 1996-12-16 Baltea Spa Dispositivo per l'avanzamento di un nastro di scrittura.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091914A (en) * 1977-02-22 1978-05-30 Porelon, Inc. Wear-activated ribbon reinker
JPS6044384A (ja) * 1983-08-22 1985-03-09 エヌ・シー・アール・コーポレーション インキ供給機構付リボン・カ−トリツジ
DE3535876A1 (de) * 1985-10-08 1987-04-09 Turbon International Farbbandkassette fuer gestopfte endlosfarbbaender
IT1187942B (it) * 1986-02-28 1987-12-23 Olivetti & Co Spa Cartucce per nastro inchiostrato con dispositivo di reinchiostrazione
US4653947A (en) * 1986-03-05 1987-03-31 Echodata Corporation Reinking device for ribbon cartridge

Also Published As

Publication number Publication date
IT1211410B (it) 1989-10-18
IT8767872A0 (it) 1987-10-20
DE3877319D1 (de) 1993-02-18
ES2038306T3 (es) 1993-07-16
ATE84259T1 (de) 1993-01-15
EP0313245A3 (en) 1989-08-30
EP0313245A2 (fr) 1989-04-26
CA1334564C (fr) 1995-02-28
ZA887793B (en) 1989-07-26
DE3877319T2 (de) 1993-07-22

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