EP0013346A1 - Print disc cartridge - Google Patents

Print disc cartridge Download PDF

Info

Publication number
EP0013346A1
EP0013346A1 EP79104892A EP79104892A EP0013346A1 EP 0013346 A1 EP0013346 A1 EP 0013346A1 EP 79104892 A EP79104892 A EP 79104892A EP 79104892 A EP79104892 A EP 79104892A EP 0013346 A1 EP0013346 A1 EP 0013346A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
cartridge according
printing
opening
flexible blade
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
EP79104892A
Other languages
German (de)
French (fr)
Other versions
EP0013346B1 (en
Inventor
Adolph Broaddus Habich
Ronald Eugene Hunt
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.)
Lexmark International Inc
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0013346A1 publication Critical patent/EP0013346A1/en
Application granted granted Critical
Publication of EP0013346B1 publication Critical patent/EP0013346B1/en
Expired legal-status Critical Current

Links

Images

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
    • B41J1/00—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies
    • B41J1/22—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection
    • B41J1/24—Typewriters or selective printing mechanisms characterised by the mounting, arrangement or disposition of the types or dies with types or dies mounted on carriers rotatable for selection the plane of the type or die face being perpendicular to the axis of rotation
    • B41J1/246—Cartridges for the carriers

Definitions

  • the present invention relates generally to printers of the type with a printing wheel with radial character tabs and more particularly, a cartridge which can contain such a printing wheel both during its storage and its use in a printer.
  • a cartridge for a print wheel comprises a housing containing a printing element and intended to be placed on a printer carriage with minimal operator intervention.
  • the housing has a central opening in its front face, allowing a drive hub controlled by a selection motor to access the printing element and a cutout in its upper front part to allow passage of a hammer.
  • the rear of the cartridge has a flexible retaining blade which also functions as a reach for the printing element.
  • the subject of the present invention is a cartridge intended to contain a printing element in the form of a wheel, both during storage and in use in a machine.
  • the cartridge has a front face, a rear face, sides or side faces, and an open bottom and its structure makes it possible to practically completely enclose the printing element.
  • the printing element consists of a central hub from which radial tabs bearing the printing characters emerge. On one side of the central hub, there is a positioning element projecting towards the front of the cartridge (i.e. towards the operator, when the cartridge is in place in a printer) - when the the printing element is contained therein. On the other side of the central hub, there is a raised part, serving as a bearing.
  • a cutout is provided in the upper part of the front face of the cartridge to allow the hammer of the printer to pass during printing.
  • a central positioning opening is also provided in the front face of the cartridge and has a contour similar to that of the positioning element of the printing element.
  • a flexible blade with a curved central part is arranged in the cartridge and extends in the direction of insertion and withdrawal of the printing element through the open bottom. The lower end of the flexible blade is in contact with the lower inner surface of the rear face of the cartridge and the curved part of the flexible blade is adjacent to the positioning opening of the cartridge and is in contact with the inner surface from the front of it. With this arrangement, a surface for guiding the positioning element of the printing element towards the positioning opening of the cartridge is produced. during the introduction of the printing element into said cartridge.
  • the flexible blade When the positioning element of the printing element is aligned with the positioning opening of the cartridge, the flexible blade causes the engagement of said positioning element in said positioning opening and the locking of the printing element. printing in a desired angular position. During printing, the positioning element is released from the positioning opening and the printing element is arranged between the front and rear of the cartridge. When the printing element is rotated to select characters during printing, the range of the printing element is pressed and rotated on the flexible blade.
  • a paper guide is also mounted on the cartridge at the top of its rear face and a tape guide is connected at the top of its front face.
  • the cartridge of the present invention substantially encloses the printing element.
  • the advantage of this device lies in its cleanliness.
  • the flexible blade provided on the cartridge of the present invention has a central curved part and is oriented in the direction of insertion. and removing the printing member.
  • the central opening of the present cartridge corresponds to a positioning element of the printing element and when the positioning element is engaged in the opening, the elastic blade locks the printing element in a position desired angle allowing its introduction into a printer.
  • the flexible blade acts as a guide surface for the positioning element towards the corresponding opening of the cartridge.
  • this flexible blade is of sufficient width. health with respect to the positioning opening to prevent any character-carrying tab of the printing element from engaging in the positioning opening during the introduction of the printing element into the cartridge.
  • Figure 1 is a perspective view of the front of the printing assembly comprising a cartridge of the present invention from which the printing element has been removed. Also shown in this figure is the drive hub of the selection motor which drives the printing element in rotation.
  • Figure 2 is a perspective view of the rear of the printing element of Figure 1.
  • FIG. 3 is a perspective view of the rear of the cartridge of FIG. 1.
  • Figure 4 is a side view of the drive hub of Figure 1.
  • FIG. 5 is a front view of the drive hub of FIG. 1.
  • FIG. 6 is a sectional view, taken vertically, of the printing element of FIGS. 1 and 2.
  • FIG. 1 the cartridge is referenced 1, the printing wheel 2 and the drive hub of the selection motor 3. Only the cartridge is part of the invention claimed below.
  • the cartridge 1 containing the printing element 2 is introduced into a printer which has a driving hub 3 for driving the element 2 in rotation.
  • a button is provided in the center of the printing side of the printing element to allow input thereof by the operator.
  • An opening has been made in the opposite side of the printing element to receive the drive motor shaft or hub. The process consists of the operator gripping the print element with his button, orienting it angularly, then forcing it onto the drive shaft.
  • the motor Before this assembly, the motor must however be removed or tilted to leave sufficient free space in the region of the printing device, allowing the operator to change or install the printing element. Even in this case, the space freed up is not important and the operation can prove to be very messy. Even after these disassembly and reassembly operations have been carried out, the simple manipulation of the printing element which has been removed from the machine can be very messy.
  • the cartridge of the present invention is designed so as to be able to contain a printing element and to be removably mounted in a printer carriage so as to substantially reduce the problems indicated above. Without taking into account the problem specific to the removal of the motor, the space to be freed for the introduction of the cartridge is no longer a critical factor since the cartridge containing a printing element is designed to be introduced vertically into a printer. In addition, since the printing element is almost entirely contained in the cartridge, changing the cartridge is no longer a messy operation.
  • the housing 4 has a front face 6 in which are formed a positioning opening 7 and a cutout 8 for the passage of a hammer.
  • the front face 6 is arranged opposite a printing device which comprises a selection motor and a striking hammer carried by a printer carriage.
  • the cutout 8 allows the passage of the hammer which is used in a well known manner to ensure printing.
  • the positioning opening 7 is somewhat in the shape of an arrow head and is formed approximately in the center of the face 6. The opening 7 cooperates with the printing element 2 to ensure and maintain an appropriate positioning of the printing element 2 when the cartridge is not in use, as will be described later.
  • the cartridge 1 has an open bottom used for the introduction and the withdrawal of the printing element 2.
  • the cut corners 13 and 14 and the corresponding cut corners of the rear face 5 have two functions. First of all these cut corners reduce the weight of the cartridge which is carried by the printer carriage during the printing operations. Then, they i guide the cartridge in its housing in the carriage when said cartridge is introduced into the machine.
  • the upper part of the front housing 4 has two ramp sections 16 and 17 starting from the recesses 11 and 12 and converging towards the raised central part of the housing 4 in which the cutout 8 is formed which has lateral sides 18 and 19 and a lower side 20.
  • the dimensions of the cutout 8 are such that they allow the passage of a striking hammer during printing, but practically prevent any manual contact of the printing element 2 by the operator.
  • the ramp sections 16 and 17 protect the upper part of the printing element 2 when it is housed in the cartridge and ensure the best possible vision of the writing line.
  • the housing 4 carries the ribbon guide 21 which can be produced from a suitably shaped metal rod. Passing momentarily to FIG. 3, it can be seen that the housing body 4 has supports 22 and 23 in which the ends of the ribbon guide are fixed.
  • the ribbon guide 21 guides the printing ribbon during the passages of this last towards its high or low position relative to the cutout 8 during the printing operations.
  • a paper guide screen 24 is integral with the upper part of the rear face 5.
  • a printing window 25 is centered horizontally in the paper guide 24 and aligned with the cutout 8.
  • the window 25 must be arranged so as to be able to be aligned with the platen of the printer and must have a sufficient width to, when executing printing operations on the fly, allow the rebound of a print character tab without the latter only come into contact with one side of the window 25. While satisfying these requirements, the window 25 must be of sufficiently small dimensions to limit the operator's access to the printing element 2.
  • the front face 6 and the rear face 5 are sufficiently close together to limit operator access to the printing element 2 from the top or the bottom of the cartridge 1. Therefore, when the printing element 2 is housed in the cartridge 1, the only part of said printing element that can be touched by the operator during normal handling of the cartridge is the part accessible through the opening 7.
  • the printing element 2 which, as indicated above, is intended to be housed and rotated in the cartridge 1 during the printing operations. When it is rotated, the printing element 2 is placed midway between the front 6 and rear 5 sides of the cartridge 1.
  • the printing element 2 consists of a central hub 26 at which are attached to the radial tabs or petals 27 which bear at their outer ends of the printing characters 28 used for printing in a well known manner.
  • the characters 28 of the tabs 27 are arranged on the printing side of the element 2.
  • the opposite side is the impact side.
  • the structure of the tongues 27 is such that it allows them to be struck by a striking hammer.
  • the central hub 26 is in the form of a circular cup having a peripheral flange 55 to which are attached the tongues 27.
  • the hub 26 has, on its convex face, an element in relief 29 ensuring the correct positioning (or orientation) of the element 2.
  • This element in relief 29 is therefore on the impact side of the element 2, surrounds its axis of rotation and its periphery is in the form of an arrow head and corresponds the shape of the opening 7 of the cartridge 1.
  • the element in relief 29 can fit into the opening 7.
  • the asymmetrical shapes of the element in relief 29 and the opening 7 ensure the installation of the element 2 in the cartridge 1 in the appropriate angular position.
  • a circular recess 30 is formed in the relief element 29.
  • the axis of rotation of the element 2 passes through the center of this recess, the bottom of which is constituted by the hub 26.
  • This recess 30 also has a radial extension 43 At the center of the recess 30, there is a ring 31 with an inner bowl 32 having a bottom 33.
  • the bowl 32 is centered on the axis of rotation of the element 2 (see FIG. 6) and is deeper than the 'depression 30.
  • the cup 32 is intended to receive the drive shaft of a selection motor which passes through the hub 3 to center and avoid the buckling of the element 2 in a manner which will be described in detail later.
  • the drive hub 3 is formed by a cylinder 34 with a flange 35.
  • a central passage 36 in the shape of a D passes axially through the cylinder 34 and the flange 35.
  • the passage 36 receives the drive shaft 37, of corresponding shape, from a selection motor.
  • the shape of the passage 36 and of the shaft 37 allows the latter to rotate the hub 3.
  • the hub 3 can be glued to the shaft 37. If the fitting of the shaft 37 in the passage 32 is sufficiently tight and sufficiently deep, the element 2 is stabilized in a radial direction perpendicular to its axis of rotation. In other words, any risk of the element 2 becoming clouded is considerably reduced. Since the front 6 and rear 5 faces of the cartridge are very close together, any warping of the element 2 on the shaft 37 would cause wear, breakage and braking when the said printing element rotates.
  • the flange 35 carries a radial arm 39 which itself carries at its outer end a drive finger 40 designed to be housed in the hole 41 ( Figure 2) formed in the element 2.
  • the hole 41 is formed in the end of the extension 43 of the recess 30 and passes through the element 2.
  • the finger 40 introduced into the hole 41, when the hub 36 is driven in rotation by the shaft 37, causes the drive in rotation of the element 2.
  • the finger 40 and the hole 41 are of corresponding shapes, that is to say on two straight sides connected by two parts in an arc.
  • the width of the hole 41 is only slightly greater than that of the finger 40 in order to reduce the clearance between the element 2 and the hub 3 during the driving in rotation of the element 2 by the hub 3. However, in order to compensate for variations in tolerances, the height of the hole 41 somewhat exceeds that of the finger 40.
  • the flat sides of these two elements constitute sufficient driving contact surfaces making it possible to reduce wear and indentation.
  • the rigidity of the arm 39 is increased by the rib 42.
  • the extension 43 of the depression 30 is wide enough to receive, without friction, the rib 42.
  • the outside diameter of the flange 35 is larger than the inside diameter 44 of the recess 30.
  • the surface 45 of the flange 35 bears against the surface of the raised element 29 to ensure radial alignment and stabilization of element 2 in order to further reduce the risks of warping.
  • Good contact between the surface 45 and the corresponding surface of the raised element 29 is facilitated by the spring 48 which applies the element 2 against the hub 3.
  • the function of the spring 48 will be described in more detail below.
  • the shape of the recess 30 has the effect of reducing the weight of the element 2.
  • the internal part of the collar 35 is hollowed out to reduce the weight. Any reduction in weight results in an improved response time with regard to starting and stopping the rotation of element 2.
  • FIG. 2 shows the rear face or printing face 56 of the printing element 2.
  • the rear face 56 carries a pin 46 placed at the center of the recess 47 of the hub 26.
  • the pin 46 extends slightly beyond the plane of the tongues 27 and is designed to operate in association with the spring 48 disposed in the cartridge 1 ( Figures 1 and 3).
  • the pin 46 is composed of a cylindrical part 49 ending in a spherical section 50.
  • the spherical section 50 acts as a bearing for the element 2 against the flexible blade or spring 48 during the rotation of the element 2.
  • the spring 48 bears against the spherical section 50 and maintains the element 2 in the locked condition in the cartridge 1.
  • the spring 48 is a flexible blade with a curved central part 51 oriented towards the opening 7 and facing the latter. This curved part 51 bears against the interior surface of the front face 6 of the cartridge.
  • the rear face 5 has a rectangular recess 52 which receives and maintains the spring 48 in a desired position relative to the opening 7. That is to say that the spring 48 will remain in place and correctly oriented at the same time when it is curved as shown in the figures and when it is loaded and deformed by the printing element contained in the cartridge 1 between the spring 48 and the front face 6.
  • the ends 57 and 58 of the spring 48 are housed in the recess 52 and are supported on the interior surface of the rear face 5.
  • the recess 52 is long enough to receive the spring 48 when the latter is loaded and deformed by the printing element and the spring 48 is long enough to ensure a gradual ramp.
  • the ends 57 and 58 are retained in the recess 52 by the contact between the front face 6 of the cartridge and the curved part 51 of the spring 48.
  • the orientation and the length of the spring 48 and the extent of the part curved 51 are such that the spring 48 does - ramp function for the spherical end 50 of the stud 46 of the element 2, in order to guide the element in relief 29 towards the opening 7 during the introduction of the element 2 in cartridge 1.
  • the force exerted by the spring 48 must be surpassed.
  • the spherical end 50 of the stud 46 moves on the curved part 51.
  • the end 57 of the spring 48 being housed in the recess 52, there will be no no attachment between the part 50 and the end 57.
  • the spring 48 pushes and guides the element 29 into the opening 7.
  • the element 29 engages in the opening 7 this causes the locking of the element 2 in the desired orientation or angular position in the cartridge 1.
  • the printing assembly formed of the element 2 and the cartridge 1 is ready for use on a printer or stored.
  • the width of spring 48 is of great importance for the introduction of a printing element into an empty cartridge.
  • the width of the spring 48 must be sufficient to prevent the passage of a printing tab 27 through the opening 7 during the introduction of the element 2 into the cartridge 1. If the spring 48 is comparatively narrow with respect to at the opening 7, the tongues may be offset from the plane of the assembly of the tongues. To eliminate this risk, the spring 48 of the embodiment illustrated here is wider than the opening 7. This allows all the tongues adjacent to the opening 7 to remain in the same plane.
  • the orientation of the spring 48 relative to the tongues 27 is also important. Indeed, since the tongues 27 are arranged radially, there will be no attachment between them and the spring 48 if the latter is oriented parallel to the direction of introduction of the element 2 into the cartridge .
  • the cartridge 1 in which the element 2 is locked is inserted into the housing provided for this purpose in print wheel printers. Then, the drive hub 3 and the selection motor and the shaft which are connected to it are brought to the central hub 26. The shaft 37 enters the bowl 32, the finger 40 in the hole 41 and the surface 45 comes into contact with the surface of the element in relief 29. The continuation of the movement of the hub 3 in the same direction will cause the vertical extension of the ends 57 and 58 of the spring 48 by the spherical end 50 of the pin 46 of the element 2. Finally, the element in relief 29 will be released from the opening 7 and element 2 will thus be unlocked so that it can rotate in the cartridge 1. During the rotation of element 2 for selection and printing operations, the arm 39 and the finger 40 are arranged in the cartridge 1 and the spring 48 acts as a bearing for the spherical end 50 of the stud 46.
  • the cup-shaped structure of the central hub 26 has a number of advantages.
  • One of these advantages is due to the design of the arrangement presented here and consists in the fact that the printing element 2 taken as a whole can be relatively thin while resisting warping.
  • the thickness of the central hub 26, apart from the raised element 29 and the pin 46 can be essentially equal to the total thickness of the element 2.
  • Another advantage lies in the fact that the element relief 29 is brought closer to the positioning opening 7. This reduces the risk of interference between the rest of the printing element 2 and the cartridge 1.
  • the rest of the printing element 2 is separated from the spring 48 during the rotation of the element 2.
  • the relief element 29 is pressed with the thumb to cause the element 2 to be unlocked and a downward movement is exerted. If the lower part of the outer periphery of the element 2 is relatively close to the bottom 15 of the cartridge when the element 2 is locked in it, a very slight movement down the element is sufficient to provide the operator with sufficient input area.

Abstract

Cartouche destinée à contenir une roue d'impression à languettes porte-caractères radiales à la fois pendant son stockage et son utilisation dans une imprimante. La cartouche (1) selon l'invention présente une face arrière (5), une face avant (6) réunies par des faces latérales (9) et (10). Le fond de la cartouche (1) est ouvert pour permettre l'introduction ou le retrait d'une roue d'impression (2). La face avant (6) présente une encoche (8) pour le passage d'un marteau de frappe et une ouverture de positionnement (7) destinée à recevoir un élément correspondant (29) de la roue d'impression (2). Un ressort (48) contenu dans la cartouche (1 ) maintient l'élément (29) dans l'ouverture (7) tant que la roue d'impression (2) ne doit pas tourner. Un guide-ruban (21) et un écran guide-papier (24) sont fixés à la partie supérieure de la cartouche (1).

Figure imgaf001
Cartridge for holding a print wheel with radial character tabs both during storage and use in a printer. The cartridge (1) according to the invention has a rear face (5), a front face (6) joined by lateral faces (9) and (10). The bottom of the cartridge (1) is open to allow the insertion or removal of a print wheel (2). The front face (6) has a notch (8) for the passage of a striking hammer and a positioning opening (7) intended to receive a corresponding element (29) of the printing wheel (2). A spring (48) contained in the cartridge (1) holds the element (29) in the opening (7) as long as the print wheel (2) does not rotate. A tape guide (21) and a paper guide screen (24) are attached to the top of the cartridge (1).
Figure imgaf001

Description

Domaine TechniqueTechnical area

La présente invention concerne de façon générale les imprimantes du type à roue d'impression à languettes porte-caractères radiales et plus particulièrement, une cartouche pouvant contenir une telle roue d'impression à la fois pendant son stockage et son utilisation dans une imprimante.The present invention relates generally to printers of the type with a printing wheel with radial character tabs and more particularly, a cartridge which can contain such a printing wheel both during its storage and its use in a printer.

Etat de la Technique AntérieureState of the Prior Art

Dans la demande de brevet français No. 78 03694 publiée le 8 septembre 1978 sous le No. 2 380 139, on décrit une cartouche pour roue d'impression. Cette cartouche comporte un boîtier contenant un élément d'impression et prévu pour être disposé sur un chariot d'imprimante avec une intervention minimale de l'opérateur. Le boîtier présente une ouverture centrale ménagée dans sa face avant, permettant à un moyeu d'entraînement commandé par un moteur de sélection d'accéder à l'élément d'impression et une découpe dans sa partie supérieure avant pour permettre le passage d'un marteau de frappe. La partie arrière de la cartouche comporte une lame flexible de retenue qui fait également fonction de portée pour l'élément d'impression.In French patent application No. 78 03694 published on September 8, 1978 under No. 2,380,139, a cartridge for a print wheel is described. This cartridge comprises a housing containing a printing element and intended to be placed on a printer carriage with minimal operator intervention. The housing has a central opening in its front face, allowing a drive hub controlled by a selection motor to access the printing element and a cutout in its upper front part to allow passage of a hammer. The rear of the cartridge has a flexible retaining blade which also functions as a reach for the printing element.

Exposé de l'InventionStatement of the Invention

La présente invention a pour objet une cartouche destinée à contenir un élément d'impression sous forme de roue, aussi bien en période de stockage qu'en utilisation dans une machine. La cartouche présente une face avant, une face arrière, des côtés ou faces latérales, et un fond ouvert et sa structure permet d'enfermer pratiquement complètement l'élément d'impression. L'élément d'impression se compose d'un moyeu central d'où partent des languettes radiales portant les caractères d'impression. On trouve solidaire d'un côté du moyeu central, un élément de positionnement faisant saillie vers l'avant de la cartouche (c'est-à-dire vers l'opérateur, lorsque la cartouche est en place dans une imprimante) - lorsque l'élément d'impression est contenu dans celle-ci. On trouve de l'autre côté du moyeu central, une partie en relief, faisant office de portée. Une découpe est ménagée dans la partie supérieure de la face avant de la cartouche pour permettre le passage du marteau de frappe de l'imprimante pendant l'impression. Une ouverture centrale de positionnement est également ménagée dans la face avant de la cartouche et présente un contour similaire à celui de l'élément de positionnement de l'élément d'impression. Une lame flexible à partie centrale incurvée est disposée dans la cartouche et s'étend dans la direction de l'introduction et du retrait de l'élément d'impression au travers du fond ouvert. L'extrémité inférieure de la lame flexible est en contact avec la surface intérieure inférieure de la face arrière de la cartouche et la partie incurvée de la lame flexible est adjacente à l'ouverture de positionnement de la cartouche et est en contact avec la surface intérieure de la face avant de celle-ci. Avec cet agencement, on réalise une surface de guidage de l'élément de positionnement de l'élément d'impression vers l'ouverture de positionnement de la cartouche pendant l'introduction de l'élément d'impression dans ladite cartouche. Lorsque l'élément de positionnement de l'élément d'impression est aligné avec l'ouverture de positionnement de la cartouche, la lame flexible provoque l'engagement dudit élément de positionnement dans ladite ouverture de positionnement et le verrouillage de l'élément d'impression dans une position angulaire désirée. Pendant l'impression, l'élément de positionnement est dégagé de l'ouverture de positionnement et l'élément d'impression est disposé entre l'avant et l'arrière de la cartouche. Lors de la rotation de l'élément d'impression pour la sélection des caractères pendant l'impression, la portée de l'élément d'impression a'appuie et tourne sur la lame flexible. Un guide-papier est également monté sur la cartouche au haut de sa face arrière et un guide-ruban est raccordé au haut de sa face avant.The subject of the present invention is a cartridge intended to contain a printing element in the form of a wheel, both during storage and in use in a machine. The cartridge has a front face, a rear face, sides or side faces, and an open bottom and its structure makes it possible to practically completely enclose the printing element. The printing element consists of a central hub from which radial tabs bearing the printing characters emerge. On one side of the central hub, there is a positioning element projecting towards the front of the cartridge (i.e. towards the operator, when the cartridge is in place in a printer) - when the the printing element is contained therein. On the other side of the central hub, there is a raised part, serving as a bearing. A cutout is provided in the upper part of the front face of the cartridge to allow the hammer of the printer to pass during printing. A central positioning opening is also provided in the front face of the cartridge and has a contour similar to that of the positioning element of the printing element. A flexible blade with a curved central part is arranged in the cartridge and extends in the direction of insertion and withdrawal of the printing element through the open bottom. The lower end of the flexible blade is in contact with the lower inner surface of the rear face of the cartridge and the curved part of the flexible blade is adjacent to the positioning opening of the cartridge and is in contact with the inner surface from the front of it. With this arrangement, a surface for guiding the positioning element of the printing element towards the positioning opening of the cartridge is produced. during the introduction of the printing element into said cartridge. When the positioning element of the printing element is aligned with the positioning opening of the cartridge, the flexible blade causes the engagement of said positioning element in said positioning opening and the locking of the printing element. printing in a desired angular position. During printing, the positioning element is released from the positioning opening and the printing element is arranged between the front and rear of the cartridge. When the printing element is rotated to select characters during printing, the range of the printing element is pressed and rotated on the flexible blade. A paper guide is also mounted on the cartridge at the top of its rear face and a tape guide is connected at the top of its front face.

Nous allons maintenant indiquer plusieurs des différences les plus importantes existant entre le dispositif décrit dans l'art antérieur précité et celui selon la présente invention, ainsi que les avantages apportés par ce dernier.We will now indicate several of the most important differences existing between the device described in the aforementioned prior art and that according to the present invention, as well as the advantages brought by the latter.

Pour commencer, on signalera que la cartouche de la présente invention enferme pratiquement complètement l'élément d'impression. La seule partie de l'élément d'impression facilement accessible par l'opérateur, lorsque ledit élément d'impression est contenu dans la cartouche, est la partie adjacente à l'ouverture centrale. L'avantage de ce dispositif réside dans sa propreté. La lame flexible prévue sur la cartouche de la présente invention présente une partie incurvée centrale et est orientée dans la direction d'introduction et de retrait de l'élément d'impression. L'ouverture centrale de la présente cartouche est en correspondance avec un élément de positionnement de l'élément d'impression et lorsque l'élément de positionnement est engagé dans l'ouverture, la lame élastique verrouille l'élément d'impression dans une position angulaire désirée permettant son introduction dans une imprimante. De plus, pendant l'introduction de l'élément d'impression dans la cartouche, la lame flexible fait fonction de surface de guidage de l'élément de positionnement vers l'ouverture correspondante de la cartouche. En outre, cette lame flexible est d'une largeur suffi-. sante par rapport à l'ouverture de positionnement pour interdire à toute languette porte-caractères de l'élément d'impression de s'engager dans l'ouverture de positionnement pendant l'introduction de l'élément d'impression dans la cartouche.To begin with, it will be noted that the cartridge of the present invention substantially encloses the printing element. The only part of the printing element easily accessible by the operator, when said printing element is contained in the cartridge, is the part adjacent to the central opening. The advantage of this device lies in its cleanliness. The flexible blade provided on the cartridge of the present invention has a central curved part and is oriented in the direction of insertion. and removing the printing member. The central opening of the present cartridge corresponds to a positioning element of the printing element and when the positioning element is engaged in the opening, the elastic blade locks the printing element in a position desired angle allowing its introduction into a printer. In addition, during the introduction of the printing element into the cartridge, the flexible blade acts as a guide surface for the positioning element towards the corresponding opening of the cartridge. In addition, this flexible blade is of sufficient width. health with respect to the positioning opening to prevent any character-carrying tab of the printing element from engaging in the positioning opening during the introduction of the printing element into the cartridge.

Brève Description des Figures des DessinsBrief Description of the Figures of the Drawings

La figure 1 est une vue en perspective de l'avant de l'ensemble d'impression comprenant une cartouche de la présente invention dont l'élément d'impression a été retiré. Est également représenté dans cette figure, le moyeu d'entraînement du moteur de sélection qui entraîne l'élément d'impression en rotation.Figure 1 is a perspective view of the front of the printing assembly comprising a cartridge of the present invention from which the printing element has been removed. Also shown in this figure is the drive hub of the selection motor which drives the printing element in rotation.

La figure 2 est une vue en perspective de l'arrière de l'élément d'impression de la figure 1.Figure 2 is a perspective view of the rear of the printing element of Figure 1.

La figure 3 est une vue en perspective de l'arrière de la cartouche de la figure 1.FIG. 3 is a perspective view of the rear of the cartridge of FIG. 1.

La figure 4 est une vue de côté du moyeu d'entraînement de la figure 1.Figure 4 is a side view of the drive hub of Figure 1.

La figure 5 est une vue de face du moyeu d'entraînement de la figure 1.FIG. 5 is a front view of the drive hub of FIG. 1.

La figure 6 est une vue en coupe, prise verticalement, de l'élément d'impression des figures 1 et 2.FIG. 6 is a sectional view, taken vertically, of the printing element of FIGS. 1 and 2.

Description d'un Mode de Réalisation de l'InventionDescription of an embodiment of the invention

Pour une description détaillée de la présente invention, on se reportera tout d'abord à la figure 1. Dans cette figure, la cartouche est référencée 1, la roue d'impression 2 et le moyeu d'entraînement du moteur de sélection 3. Seule la cartouche fait partie de l'invention revendiquée ci-après. Pour les opérations d'impression, la cartouche 1 contenant l'élément d'impression 2 est introduite dans une imprimante qui comporte un moyeu d'entraînement 3 pour l'entraînement de l'élément 2 en rotation.For a detailed description of the present invention, reference will first be made to FIG. 1. In this figure, the cartridge is referenced 1, the printing wheel 2 and the drive hub of the selection motor 3. Only the cartridge is part of the invention claimed below. For printing operations, the cartridge 1 containing the printing element 2 is introduced into a printer which has a driving hub 3 for driving the element 2 in rotation.

Avant de poursuivre la description de la cartouche 1 et de ses relations avec l'élément d'impression 2 et le moyeu d'entraînement 3, on précisera quelques points fondamentaux. Tout d'abord, dans une imprimante à roue d'impression, le montage de la roue d'impression sur le moyeu d'entraînement du moteur de sélection requiert de nombreuses manipulations de la part de l'opérateur. De plus, le système de montage est souvent compliqué. Par exemple, dans une réalisation courante, un bouton est prévu au centre du côté impression de l'élément d'impression pour permettre la saisie de celui-ci par l'opérateur. On a ménagé une ouverture dans le'côté opposé de l'élément d'impression pour recevoir l'arbre ou moyeu d'entraînement du moteur de sélection. Le processus consiste pour l'opérateur à saisir l'élément d'impression par son bouton, à l'orienter angulairement, puis à le monter à force sur l'arbre d'entraînement. Avant ce montage, le moteur doit cependant être retiré ou basculé pour laisser un espace libre suffisant dans la région du dispositif d'impression, permettant à l'opérateur de changer ou d'installer l'élément d'impression. Même dans ce cas, l'espace libéré n'est pas important et l'opération peut se révéler très salissante. Même après que ces opérations de démontage et de remontage aient été effectuées, la simple manipulation de l'élément d'impression qui a été retiré de la machine, peut être très salissante.Before continuing the description of the cartridge 1 and its relations with the printing element 2 and the drive hub 3, a few fundamental points will be made. First of all, in a print wheel printer, mounting the print wheel on the drive hub of the selection motor requires numerous manipulations on the part of the operator. In addition, the mounting system is often complicated. For example, in a current embodiment, a button is provided in the center of the printing side of the printing element to allow input thereof by the operator. An opening has been made in the opposite side of the printing element to receive the drive motor shaft or hub. The process consists of the operator gripping the print element with his button, orienting it angularly, then forcing it onto the drive shaft. Before this assembly, the motor must however be removed or tilted to leave sufficient free space in the region of the printing device, allowing the operator to change or install the printing element. Even in this case, the space freed up is not important and the operation can prove to be very messy. Even after these disassembly and reassembly operations have been carried out, the simple manipulation of the printing element which has been removed from the machine can be very messy.

La cartouche de la présente invention est conçue de façon à pouvoir contenir un élément d'impression et à être montée de façon démontable dans un chariot d'imprimante de manière à réduire substantiellement les problèmes indiqués ci-dessus. Compte non tenu du problème propre au retrait du moteur l'espace à libérer pour l'introduction de la cartouche n'est plus un facteur critique car la cartouche contenant un élément d'impression est conçue pour être introduite verticalement dans une imprimante. En outre, étant donné que l'élément d'impression est pratiquement entièrement contenu dans la cartouche, le changement de cartouche ne constitue plus une opération salissante.The cartridge of the present invention is designed so as to be able to contain a printing element and to be removably mounted in a printer carriage so as to substantially reduce the problems indicated above. Without taking into account the problem specific to the removal of the motor, the space to be freed for the introduction of the cartridge is no longer a critical factor since the cartridge containing a printing element is designed to be introduced vertically into a printer. In addition, since the printing element is almost entirely contained in the cartridge, changing the cartridge is no longer a messy operation.

On se reportera de nouveau à la figure 1 et plus particulièrement à la cartouche 1 formée principalement d'un bottier 4 et d'une face arrière 5. Le boîtier 4 présente une face avant 6 dans laquelle sont ménagées une ouverture de positionnement 7 et une découpe 8 pour le passage d'un marteau de frappe. La face avant 6 est disposée en regard d'un dispositif d'impression qui comprend un moteur de sélection et un marteau de frappe portés par un chariot d'imprimante. La découpe 8 permet le passage du marteau de frappe qui est utilisé d'une manière bien connue pour assurer l'impression. L'ouverture de positionnement 7 a quelque peu la forme d'une tête de flèche et est ménagée approximativement au centre de la face 6. L'ouverture 7 coopère avec l'élément d'impression 2 pour assurer et maintenir un positionnement approprié de l'élément d'impression 2 lorsque la cartouche n'est pas en utilisation, comme on le décrira plus tard. On trouve solidaires de la face avant 6, des côtés 9 et 10 qui présentent des enfoncements 11 et 12 facilitant la saisie de la cartouche 1 par l'opérateur. La partie inférieure de la face avant 6 présente des coins coupés 13 et 14 et une arête 15. Le boîtier 4 ne comporte pas de parois latérales le long des coins coupés 13 et 14 et de l'arête 15. Ainsi, lorsque le boîtier 4 et la face arrière 5 sont assemblés, la cartouche 1 présente un fond ouvert utilisé pour l'introduction et le retrait de l'élément d'impression 2.Reference will again be made to FIG. 1 and more particularly to the cartridge 1 formed mainly of a shoemaker 4 and of a rear face 5. The housing 4 has a front face 6 in which are formed a positioning opening 7 and a cutout 8 for the passage of a hammer. The front face 6 is arranged opposite a printing device which comprises a selection motor and a striking hammer carried by a printer carriage. The cutout 8 allows the passage of the hammer which is used in a well known manner to ensure printing. The positioning opening 7 is somewhat in the shape of an arrow head and is formed approximately in the center of the face 6. The opening 7 cooperates with the printing element 2 to ensure and maintain an appropriate positioning of the printing element 2 when the cartridge is not in use, as will be described later. We find integral with the front face 6, sides 9 and 10 which have recesses 11 and 12 facilitating the entry of the cartridge 1 by the operator. The lower part of the front face 6 has cut corners 13 and 14 and an edge 15. The housing 4 does not have side walls along the cut corners 13 and 14 and the edge 15. Thus, when the housing 4 and the rear face 5 are assembled, the cartridge 1 has an open bottom used for the introduction and the withdrawal of the printing element 2.

Les coins coupés 13 et 14 et les coins coupés correspondants de la face arrière 5 ont deux fonctions. Tout d'abord ces coins coupés réduisent le poids de la cartouche qui est porté par le chariot de l'imprimante pendant les opérations d'impression. Ensuite, ils i assurent le guidage de la cartouche dans son logement dans le chariot lorsque ladite cartouche est introduite dans la machine.The cut corners 13 and 14 and the corresponding cut corners of the rear face 5 have two functions. First of all these cut corners reduce the weight of the cartridge which is carried by the printer carriage during the printing operations. Then, they i guide the cartridge in its housing in the carriage when said cartridge is introduced into the machine.

La partie supérieure du boîtier avant 4 présente deux sections en rampe 16 et 17 partant des enfoncements 11 et 12 et convergeant vers la partie centrale surélevée du boîtier 4 dans laquelle est ménagée la découpe 8 qui présente des côtés latéraux 18 et 19 et un côté inférieur 20. Les dimensions de la découpe 8 sont telles qu'elles permettent le passage d'un marteau de frappe pendant l'impression, mais empêchent pratiquement tout contact manuel de l'élément d'impression 2 par l'opérateur. Les sections en rampe 16 et 17 protègent la partie supérieure de l'élément d'impression 2 lorsque celui-ci est logé dans la cartouche et assurent la meilleure vision possible de la ligne d'écriture.The upper part of the front housing 4 has two ramp sections 16 and 17 starting from the recesses 11 and 12 and converging towards the raised central part of the housing 4 in which the cutout 8 is formed which has lateral sides 18 and 19 and a lower side 20. The dimensions of the cutout 8 are such that they allow the passage of a striking hammer during printing, but practically prevent any manual contact of the printing element 2 by the operator. The ramp sections 16 and 17 protect the upper part of the printing element 2 when it is housed in the cartridge and ensure the best possible vision of the writing line.

Le boîtier 4 porte le guide ruban 21 qui peut être réalisé à partir d'une tige métallique convenablement conformée. En passant momentanément à la figure 3, on voit que le corps du boîtier 4 présente des supports 22 et 23 dans lesquels sont fixées les extrémités du guide ruban 21. Le guide ruban 21 assure le guidage du ruban d'impression lors des passages de ce dernier vers sa position haute ou basse par rapport à la découpe 8 pendant les opérations d'impression.The housing 4 carries the ribbon guide 21 which can be produced from a suitably shaped metal rod. Passing momentarily to FIG. 3, it can be seen that the housing body 4 has supports 22 and 23 in which the ends of the ribbon guide are fixed. The ribbon guide 21 guides the printing ribbon during the passages of this last towards its high or low position relative to the cutout 8 during the printing operations.

Un écran guide-papier 24 est solidaire de la partie supérieure de la face arrière 5. Une fenêtre d'impression 25 est centrée horizontalement dans le guide-papier 24 et alignée avec la découpe 8. La fenêtre 25 doit être disposée de façon à pouvoir être alignée avec la platine de l'imprimante et doit présenter une largeur suffisante pour, lors de l'exécution d'opérations d'impression à la volée, permettre le rebond d'une languette porte-caractères d'impression sans que celle-ci n'entre en contact avec un côté de la fenêtre 25. Tout en satisfaisant ces exigences, la fenêtre 25 doit être de dimensions suffisamment réduites pour limiter l'accès de l'opérateur à l'élément d'impression 2. De plus, la face avant 6 et la face arrière 5 sont suffisamment rapprochées pour limiter l'accès de l'opérateur à l'élément d'impression 2 par le haut ou par le fond de la cartouche 1. Donc, lorsque l'élément d'impression 2 est logé dans la cartouche 1, la seule partie dudit élément d'impression pouvant être touchée par l'opérateur pendant la manipulation normale de la cartouche est la partie accessible au travers de l'ouverture 7.A paper guide screen 24 is integral with the upper part of the rear face 5. A printing window 25 is centered horizontally in the paper guide 24 and aligned with the cutout 8. The window 25 must be arranged so as to be able to be aligned with the platen of the printer and must have a sufficient width to, when executing printing operations on the fly, allow the rebound of a print character tab without the latter only come into contact with one side of the window 25. While satisfying these requirements, the window 25 must be of sufficiently small dimensions to limit the operator's access to the printing element 2. In addition, the front face 6 and the rear face 5 are sufficiently close together to limit operator access to the printing element 2 from the top or the bottom of the cartridge 1. Therefore, when the printing element 2 is housed in the cartridge 1, the only part of said printing element that can be touched by the operator during normal handling of the cartridge is the part accessible through the opening 7.

On se reportera encore à la figure 1 et on considèrera plus particulièrement l'élément d'impression 2 qui, comme indiqué ci-dessus, est destiné à être logé et entraîné en rotation dans la cartouche 1 pendant les opérations d'impression. Lorsqu'il est entraîné en rotation, l'élément d'impression 2 est placé à mi- chemin entre les faces avant 6 et arrière 5 de la cartouche 1. L'élément d'impression 2 se compose d'un moyeu central 26 auquel sont rattachées des languettes radiales ou pétales 27 qui portent à leurs extrémités extérieures des caractères d'impression 28 utilisés pour l'impression d'une manière bien connue. Les caractères 28 des languettes 27 sont disposés sur le côté impression de l'élément 2. Le côté opposé est le côté impact. Du côté impact, la structure des languettes 27 est telle qu'elle permet la frappe de celles-ci par un marteau de frappe. En se reportant aux figures 2 et 6, on voit que le moyeu central 26 est en forme de coupelle circulaire présentant un rebord périphérique 55 auquel sont rattachées les languettes 27. Le moyeu 26 comporte, sur sa face convexe, un élément en relief 29 assurant le positionnement (ou orientation) correct de l'élément 2. Cet élément en relief 29 est donc du côté impact de l'élément 2, entoure son axe de rotation et sa périphérie est en forme de tête de flèche et correspond à la forme de l'ouverture 7 de la cartouche 1. En d'autres termes, l'élément en relief 29 peut s'emboiter dans l'ouverture 7. Les formes asymétriques de l'élément en relief 29 et de l'ouverture 7 assurent l'installation de l'élément 2 dans la cartouche 1 dans la position angulaire appropriée.Reference will also be made to FIG. 1 and we will more particularly consider the printing element 2 which, as indicated above, is intended to be housed and rotated in the cartridge 1 during the printing operations. When it is rotated, the printing element 2 is placed midway between the front 6 and rear 5 sides of the cartridge 1. The printing element 2 consists of a central hub 26 at which are attached to the radial tabs or petals 27 which bear at their outer ends of the printing characters 28 used for printing in a well known manner. The characters 28 of the tabs 27 are arranged on the printing side of the element 2. The opposite side is the impact side. On the impact side, the structure of the tongues 27 is such that it allows them to be struck by a striking hammer. Referring to Figures 2 and 6, we see that the central hub 26 is in the form of a circular cup having a peripheral flange 55 to which are attached the tongues 27. The hub 26 has, on its convex face, an element in relief 29 ensuring the correct positioning (or orientation) of the element 2. This element in relief 29 is therefore on the impact side of the element 2, surrounds its axis of rotation and its periphery is in the form of an arrow head and corresponds the shape of the opening 7 of the cartridge 1. In other words, the element in relief 29 can fit into the opening 7. The asymmetrical shapes of the element in relief 29 and the opening 7 ensure the installation of the element 2 in the cartridge 1 in the appropriate angular position.

Un enfoncement circulaire 30 est ménagé dans l'élément en relief 29. L'axe de rotation de l'élément 2 passe par le centre de cet enfoncement dont le fond est constitué par le moyeu 26. Cet enfoncement 30 présente également une extension radiale 43. Au centre de l'enfoncement 30, on trouve une couronne 31 à cuvette intérieure 32 présentant un fond 33. La cuvette 32 est centrée sur l'axe de rotation de l'élément 2 (voir figure 6) et est plus profonde que l'enfoncement 30. La cuvette 32 est destinée à recevoir l'arbre d'entraînement d'un moteur de sélection qui passe au travers du moyeu 3 pour centrer et éviter le voilage de l'élément 2 d'une manière qui sera décrite en détail ultérieurement.A circular recess 30 is formed in the relief element 29. The axis of rotation of the element 2 passes through the center of this recess, the bottom of which is constituted by the hub 26. This recess 30 also has a radial extension 43 At the center of the recess 30, there is a ring 31 with an inner bowl 32 having a bottom 33. The bowl 32 is centered on the axis of rotation of the element 2 (see FIG. 6) and is deeper than the 'depression 30. The cup 32 is intended to receive the drive shaft of a selection motor which passes through the hub 3 to center and avoid the buckling of the element 2 in a manner which will be described in detail later.

On se reportera maintenant plus particulièrement au moyeu d'entraînement 3 représenté aux figures 1, 4 et 5. Le moyeu d'entraînement 3 est formé d'un cylindre 34 à collerette 35. Un passage central 36 en forme de D traverse axialement le cylindre 34 et la collerette 35. Le passage 36 reçoit l'arbre d'entraînement 37, de forme correspondante, d'un moteur de sélection. La forme du passage 36 et de l'arbre 37 permet à ce dernier d'entraîner en rotation le moyeu 3. Le moyeu 3 peut être collé sur l'arbre 37. Si l'emmanchement de l'arbre 37 dans le passage 32 est suffisamment serré et suffisamment profond, l'élément 2 est stabilisé dans une direction radiale perpendiculaire à son axe de rotation. C'est-3·dire que tout risque de voilage de l'élément 2 se trouve considérablement réduit. Etant donné que les faces avant 6 et arrière 5 de la cartouche sont très rapprochées, tout voilage de l'élément 2 sur l'arbre 37 serait cause d'usure, de rupture et de freinage à la rotation dudit élément d'impression.Reference will now be made more particularly to the drive hub 3 shown in FIGS. 1, 4 and 5. The drive hub 3 is formed by a cylinder 34 with a flange 35. A central passage 36 in the shape of a D passes axially through the cylinder 34 and the flange 35. The passage 36 receives the drive shaft 37, of corresponding shape, from a selection motor. The shape of the passage 36 and of the shaft 37 allows the latter to rotate the hub 3. The hub 3 can be glued to the shaft 37. If the fitting of the shaft 37 in the passage 32 is sufficiently tight and sufficiently deep, the element 2 is stabilized in a radial direction perpendicular to its axis of rotation. In other words, any risk of the element 2 becoming clouded is considerably reduced. Since the front 6 and rear 5 faces of the cartridge are very close together, any warping of the element 2 on the shaft 37 would cause wear, breakage and braking when the said printing element rotates.

La collerette 35 porte un bras radial 39 qui porte lui- même à son extrémité extérieure un doigt d'entraînement 40 conçu pour se loger dans le trou 41 (figure 2) ménagé dans l'élément 2. Le trou 41 est ménagé dans l'extrémité de l'expension 43 de l'enfoncement 30 et traverse l'élément 2. Le doigt 40 introduit dans le trou 41, lorsque le moyeu 36 est entraîné en rotation par l'arbre 37, provoque l'entraînement en rotation de l'élément 2. Le doigt 40 et le trou 41 sont de formes correspondantes, c'est-à-dire à deux côtés droits reliés par deux parties en arc de cercle.The flange 35 carries a radial arm 39 which itself carries at its outer end a drive finger 40 designed to be housed in the hole 41 (Figure 2) formed in the element 2. The hole 41 is formed in the end of the extension 43 of the recess 30 and passes through the element 2. The finger 40 introduced into the hole 41, when the hub 36 is driven in rotation by the shaft 37, causes the drive in rotation of the element 2. The finger 40 and the hole 41 are of corresponding shapes, that is to say on two straight sides connected by two parts in an arc.

La largeur du trou 41 n'est que légèrement plus importante que celle du doigt 40 afin de réduire le jeu entre l'élément 2 et le moyeu 3 pendant l'entraînement en rotation de l'élément 2 par le moyeu 3. Toutefois, afin de compenser les variations de tolérances, la hauteur du trou 41 excède quelque peu celle du doigt 40. Les côtés plats de ces deux éléments constituent des surfaces de contact d'entraînement suffisantes permettant de réduire l'usure et l'indentation. La rigidité du bras 39 est accrue par la nervure 42. L'extension 43 de l'enfoncement 30 est suffisamment large pour recevoir, sans frottement, la nervure 42.The width of the hole 41 is only slightly greater than that of the finger 40 in order to reduce the clearance between the element 2 and the hub 3 during the driving in rotation of the element 2 by the hub 3. However, in order to compensate for variations in tolerances, the height of the hole 41 somewhat exceeds that of the finger 40. The flat sides of these two elements constitute sufficient driving contact surfaces making it possible to reduce wear and indentation. The rigidity of the arm 39 is increased by the rib 42. The extension 43 of the depression 30 is wide enough to receive, without friction, the rib 42.

Le diamètre extérieur de la collerette 35 est plus grand que le diamètre intérieur 44 de l'enfoncement 30. Ainsi, la surface 45 de la collerette 35 porte contre la surface de l'élément en relief 29 pour assurer l'alignement radial et la stabilisation de l'élément 2 afin d'en réduire encore les risques de voilage. Un bon contact entre la surface 45 et la surface correspondante de l'élément en relief 29 est facilité par le ressort 48 qui applique l'élément 2 contre le moyeu 3. La fonction du ressort 48 sera décrite plus en détail par la suite. Dès maintenant, il est important de noter qu'il ne faut pas que le moyeu 3 soit emmanché plus avant sur l'arbre 37 depuis l'extrémité 38 de celui-ci, et ce, afin d'éviter que ladite extrémité 38 soit en contact avec le fond de la cuvette 32 de l'élément 2. S'il n'en était ainsi, le contact intégral de la surface 45 et de la surface correspondante de l'élément en relief 29 ne pourrait avoir lieu. De plus, bien que le diamètre extérieur de la collerette 35 soit plus grand que le diamètre intérieur 44 de l'enfoncement 30, la collerette 35 est encore suffisamment petite pour que le moyeu 3 puisse passer librement au travers de l'ouverture 7 de la cartouche 1 lorsqu'il est correctement positionné par rapport à l'élément d'impression 2.The outside diameter of the flange 35 is larger than the inside diameter 44 of the recess 30. Thus, the surface 45 of the flange 35 bears against the surface of the raised element 29 to ensure radial alignment and stabilization of element 2 in order to further reduce the risks of warping. Good contact between the surface 45 and the corresponding surface of the raised element 29 is facilitated by the spring 48 which applies the element 2 against the hub 3. The function of the spring 48 will be described in more detail below. As of now, it is important to note that the hub 3 must not be fitted further onto the shaft 37 from the end 38 of the latter, in order to prevent said end 38 from being in contact with the bottom of the bowl 32 of the element 2. If this were not the case, full contact of the surface 45 and of the corresponding surface of the element in relief 29 could not take place. In addition, although the outside diameter of the flange 35 is larger than the inside diameter 44 of the recess 30, the flange 35 is still small enough that the hub 3 can pass freely through the opening 7 of the cartridge 1 when it is correctly positioned in relation to the printing element 2.

La forme de l'enfoncement 30 a pour effet de réduire le poids de l'élément 2. D'une manière similaire, la partie intérieure de la collerette 35 est évidée pour en réduire le poids. Toute réduction de poids entraîne un temps de réponse amélioré en ce qui concerne la mise en route et l'arrêt de la rotation de l'élément 2.The shape of the recess 30 has the effect of reducing the weight of the element 2. In a similar manner, the internal part of the collar 35 is hollowed out to reduce the weight. Any reduction in weight results in an improved response time with regard to starting and stopping the rotation of element 2.

On se reportera maintenant aux figures 2 et 6. La figure 2 présente la face arrière ou face impression 56 de l'élément d'impression 2. La face arrière 56 porte un têton 46 disposé au centre de l'enfoncement 47 du moyeu 26. Le têton 46 s'étend légèrement au delà du plan des languettes 27 et est conçu pour fonctionner en association avec le ressort 48 disposé dans la cartouche 1 (figures 1 et 3). Le têton 46 est composé d'une partie cylindrique 49 se terminant par une section sphérique 50. La section sphérique 50 fait fonction de portée pour l'élément 2 contre la lame flexible ou ressort 48 pendant la rotation de l'élément 2. Lorsque l'élément 2 est dans la cartouche 1 et que l'ensemble n'est pas utilisé pour une opération d'impression, le ressort 48 porte contre la section sphérique 50 et maintient l'élément 2 en condition verrouillée dans la cartouche 1.Reference will now be made to FIGS. 2 and 6. FIG. 2 shows the rear face or printing face 56 of the printing element 2. The rear face 56 carries a pin 46 placed at the center of the recess 47 of the hub 26. The pin 46 extends slightly beyond the plane of the tongues 27 and is designed to operate in association with the spring 48 disposed in the cartridge 1 (Figures 1 and 3). The pin 46 is composed of a cylindrical part 49 ending in a spherical section 50. The spherical section 50 acts as a bearing for the element 2 against the flexible blade or spring 48 during the rotation of the element 2. When the the element 2 is in the cartridge 1 and that the assembly is not used for a printing operation, the spring 48 bears against the spherical section 50 and maintains the element 2 in the locked condition in the cartridge 1.

Avant d'aller plus avant dans la description des rapports existant entre l'élément d'impression 2 et le ressort 48, plusieurs détails particuliers concernant le ressort 48 et la cartouche 1 seront expliqués. Tout d'abord, en se reportant à la figure 3, on voit que le ressort 48 est une lame flexible à partie centrale incurvée 51 orientée vers l'ouverture 7 et en regard de celle-ci. Cette partie incurvée 51 porte contre la surface intérieure de la face avant 6 de la cartouche. La face arrière 5 présente un enfoncement rectangulaire 52 qui reçoit et maintient le ressort 48 dans une position désirée par rapport à l'ouverture 7. C'est-à-dire que le ressort 48 demeurera en place et orienté correctement à la fois lorsqu'il est incurvé comme montré dans les figures et lorsqu'il est chargé et déformé par l'élément d'impression contenu dans la cartouche 1 entre le ressort 48 et la face avant 6. Les extrémités 57 et 58 du ressort 48 sont logées dans l'enfoncement 52 et s'appuient sur la surface intérieure de la face arrière 5. L'enfoncement 52 est suffisamment long pour recevoir le ressort 48 lorsque celui-ci est chargé et déformé par l'élément d'impression et le ressort 48 est suffisamment long pour assurer une rampe graduelle. Les extrémités 57 et 58 sont retenues dans l'enfoncement 52 par le contact entre la face avant 6 de la cartouche et la partie incurvée 51 du ressort 48. Ainsi, l'orientation et la longueur du ressort 48 et l'étendue de la partie incurvée 51 sont telles que le ressort 48 fait - fonction de rampe pour l'extrémité sphérique 50 du téton 46 de l'élément 2, afin de guider l'élément en relief 29 vers l'ouverture 7 pendant l'introduction de l'élément 2 dans la cartouche 1.Before going further in the description of the relationships between the printing element 2 and the spring 48, several specific details concerning the spring 48 and the cartridge 1 will be explained. First of all, with reference to FIG. 3, it can be seen that the spring 48 is a flexible blade with a curved central part 51 oriented towards the opening 7 and facing the latter. This curved part 51 bears against the interior surface of the front face 6 of the cartridge. The rear face 5 has a rectangular recess 52 which receives and maintains the spring 48 in a desired position relative to the opening 7. That is to say that the spring 48 will remain in place and correctly oriented at the same time when it is curved as shown in the figures and when it is loaded and deformed by the printing element contained in the cartridge 1 between the spring 48 and the front face 6. The ends 57 and 58 of the spring 48 are housed in the recess 52 and are supported on the interior surface of the rear face 5. The recess 52 is long enough to receive the spring 48 when the latter is loaded and deformed by the printing element and the spring 48 is long enough to ensure a gradual ramp. The ends 57 and 58 are retained in the recess 52 by the contact between the front face 6 of the cartridge and the curved part 51 of the spring 48. Thus, the orientation and the length of the spring 48 and the extent of the part curved 51 are such that the spring 48 does - ramp function for the spherical end 50 of the stud 46 of the element 2, in order to guide the element in relief 29 towards the opening 7 during the introduction of the element 2 in cartridge 1.

Lorsque l'élément 2 est introduit dans la cartouche par le fond de celle-ci, la force exercée par le ressort 48 doit être surpassée. Pendant l'introduction de l'élément 2 dans la cartouche 1, l'extrémité sphérique 50 du téton 46 se déplace sur la partie incurvée 51. L'extrémité 57 du ressort 48 étant logée dans l'enfoncement 52, il n'y aura pas d'accrochage entre la partie 50 et l'extrémité 57. Lorsque l'élément en relief 29 et l'ouverture 7 sont alignés, le ressort 48 pousse et guide l'élément 29 dans l'ouverture 7. Lorsque l'élément 29 s'engage dans l'ouverture 7, cela provoque le verrouillage de l'élément 2 dans l'orientation ou position angulaire désirée dans la cartouche 1. A cet instant, l'ensemble d'impression formé de l'élément 2 et de la cartouche 1 est prêt à être utilisé sur une imprimante ou stocké.When the element 2 is introduced into the cartridge through the bottom thereof, the force exerted by the spring 48 must be surpassed. During the introduction of the element 2 into the cartridge 1, the spherical end 50 of the stud 46 moves on the curved part 51. The end 57 of the spring 48 being housed in the recess 52, there will be no no attachment between the part 50 and the end 57. When the relief element 29 and the opening 7 are aligned, the spring 48 pushes and guides the element 29 into the opening 7. When the element 29 engages in the opening 7, this causes the locking of the element 2 in the desired orientation or angular position in the cartridge 1. At this instant, the printing assembly formed of the element 2 and the cartridge 1 is ready for use on a printer or stored.

En considérant à nouveau la relation existant entre le ressort 48 et l'élément 2, on notera que la largeur du ressort 48 est d'une grande importance pour l'introduction d'un élément d'impression dans une cartouche vide. La largeur du ressort 48 doit être suffisante pour interdire le passage d'une languette d'impression 27 au travers de l'ouverture 7 pendant l'introduction de l'élément 2 dans la cartouche 1. Si le ressort 48 est comparativement étroit par rapport à l'ouverture 7, des languettes pourront être décalées du plan de l'ensemble des languettes. Pour éliminer ce risque, le ressort 48 de la réalisation illustrée ici est plus large que l'ouverture 7. Ceci permet à toutes les languettes adjacentes à l'ouverture 7 de rester dans le même plan. L'orientation du ressort 48 par rapport aux languettes 27 est également importante. En effet, étant donné que les languettes 27 sont disposées radialement, il n'y aura pas d'accrochage entre elles et le ressort 48 si celui-ci est orienté parallèlement à la direction de l'introduction de l'élément 2 dans la cartouche.Again considering the relationship between the spring 48 and element 2, it will be noted that the width of spring 48 is of great importance for the introduction of a printing element into an empty cartridge. The width of the spring 48 must be sufficient to prevent the passage of a printing tab 27 through the opening 7 during the introduction of the element 2 into the cartridge 1. If the spring 48 is comparatively narrow with respect to at the opening 7, the tongues may be offset from the plane of the assembly of the tongues. To eliminate this risk, the spring 48 of the embodiment illustrated here is wider than the opening 7. This allows all the tongues adjacent to the opening 7 to remain in the same plane. The orientation of the spring 48 relative to the tongues 27 is also important. Indeed, since the tongues 27 are arranged radially, there will be no attachment between them and the spring 48 if the latter is oriented parallel to the direction of introduction of the element 2 into the cartridge .

Lorsque l'élément d'impression 2 doit être utilisé pour une opération d'impression, la cartouche 1 dans laquelle est verrouillé l'élément 2, est introduite dans le logement prévu à cet effet dans les imprimantes à roue d'impression. Puis, le moyeu d'entraînement 3 et le moteur de sélection et l'arbre qui lui sont raccordés sont amenés vers le moyeu central 26. L'arbre 37 pénètre dans la cuvette 32, le doigt 40 dans le trou 41 et la surface 45 entre en contact avec la surface de l'élément en relief 29. La poursuite du mouvement du moyeu 3 dans la même direction provoquera l'extension verticale des extrémités 57 et 58 du ressort 48 par l'extrémité sphérique 50 du têton 46 de l'élément 2. Finalement, l'élément en relief 29 sera dégagé de l'ouverture 7 et l'élément 2 sera ainsi déverrouillé pour pouvoir tourner dans la cartouche 1. Pendant'la rotation de l'élément 2 pour des opérations de sélection et d'impression, le bras 39 et le doigt 40 sont disposés dans la cartouche 1 et le ressort 48 fait fonction de portée pour l'extrémité sphérique 50 du téton 46.When the printing element 2 is to be used for a printing operation, the cartridge 1 in which the element 2 is locked, is inserted into the housing provided for this purpose in print wheel printers. Then, the drive hub 3 and the selection motor and the shaft which are connected to it are brought to the central hub 26. The shaft 37 enters the bowl 32, the finger 40 in the hole 41 and the surface 45 comes into contact with the surface of the element in relief 29. The continuation of the movement of the hub 3 in the same direction will cause the vertical extension of the ends 57 and 58 of the spring 48 by the spherical end 50 of the pin 46 of the element 2. Finally, the element in relief 29 will be released from the opening 7 and element 2 will thus be unlocked so that it can rotate in the cartridge 1. During the rotation of element 2 for selection and printing operations, the arm 39 and the finger 40 are arranged in the cartridge 1 and the spring 48 acts as a bearing for the spherical end 50 of the stud 46.

En se reportant à nouveau à l'élément d'impression 2 représenté dans les figures 1, 2 et 6, on notera que la structure en forme de coupelle du moyeu central 26 présente un certain nombre d'avantages. L'un de ces avantages est dû à la conception de l'agencement présenté ici et consiste dans le fait que l'élément d'impression 2 pris dans son ensemble peut être reiatives ment mince tout en résistant au voilage. En fait, l'épaisseur du moyeu central 26, hormis l'élément en relief 29 et le têton 46, peut être essentiellement égale à l'épaisseur totale de l'élément 2. Un autre avantage réside dans le fait que l'élément en relief 29 est amené plus près de l'ouverture de positionnement 7. Ceci réduit les risques d'interférence entre le reste de l'élément d'impression 2 et la cartouche 1. En outre, en raison de la relation existant entre la partie incurvée 51 de la lame flexible 48 et le téton 46, le reste de l'élément d'impression 2 est séparé du ressort 48 pendant la rotation de l'élément 2.Referring again to the printing element 2 shown in Figures 1, 2 and 6, it will be noted that the cup-shaped structure of the central hub 26 has a number of advantages. One of these advantages is due to the design of the arrangement presented here and consists in the fact that the printing element 2 taken as a whole can be relatively thin while resisting warping. In fact, the thickness of the central hub 26, apart from the raised element 29 and the pin 46, can be essentially equal to the total thickness of the element 2. Another advantage lies in the fact that the element relief 29 is brought closer to the positioning opening 7. This reduces the risk of interference between the rest of the printing element 2 and the cartridge 1. In addition, due to the relationship existing between the curved part 51 of the flexible blade 48 and the stud 46, the rest of the printing element 2 is separated from the spring 48 during the rotation of the element 2.

Pour retirer l'élément d'impression 2 de la cartouche 1, on enfonce l'élément en relief 29 avec le pouce pour provoquer le déverrouillage de l'élément 2 et on exerce un mouvement vers le bas. Si la partie inférieure de la périphérie extérieure de l'élément 2 est relativement proche du bas 15 de la cartouche lorsque l'élsmemt 2 est verrouillé dans celle-ci, un très faible mouvement vers le bas de l'élément est suffisant pour offrir une zone de saisie suffisante à l'opérateur.To remove the printing element 2 from the cartridge 1, the relief element 29 is pressed with the thumb to cause the element 2 to be unlocked and a downward movement is exerted. If the lower part of the outer periphery of the element 2 is relatively close to the bottom 15 of the cartridge when the element 2 is locked in it, a very slight movement down the element is sufficient to provide the operator with sufficient input area.

Bien que l'on ait décrit dans ce qui précède et représenté sur les dessins les caractéristiques essentielles de l'invention appliquées à un mode de réalisation préféré de celle-ci, il est évident que l'homme de l'art peut y apporter toutes modifications de forme ou de détail qu'il juge utiles, sans pour autant sortir du cadre de ladite invention.Although the essential characteristics of the invention applied to a preferred embodiment of the invention have been described in the foregoing and represented in the drawings, it is obvious that a person skilled in the art can provide all of them. modifications of form or detail which he judges useful, without departing from the scope of said invention.

Claims (15)

1. Cartouche destinée à contenir une roue d'impression à languettes porte-caractères radiales caractérisée en ce qu'elle comprend: un boîtier formé d'une face avant et de faces latérales, la face avant présentant une ouverture de positionnement, de ladite roue d'impression, une face arrière raccordée auxdites faces latérales pour former un logement pratiquement clos comportant une ouverture de dans son fond, ladite face arrière présentant des moyens de retenue situes à l'intérieur dudit logement, an élément flexible retenu par lesdits moyens de retenue à l'intérieur dudit logement et s'étendant vers ladite ouverture de positionnement. 1. Cartridge intended to contain a printing wheel with tabs carrying radial characters, characterized in that it comprises: a housing formed by a front face and lateral faces, the front face having a positioning opening, of said printing wheel, a rear face connected to said lateral faces to form a substantially closed housing having an opening in its bottom, said rear face having retaining means located inside said housing, a flexible element retained by said retaining means inside said housing and extending towards said positioning opening. 2. Cartouche selon la revendication 1 caractérisée en ce que ladits ouveture de positionnement est ménagée au centre de ladite face avant.2. Cartridge according to claim 1 characterized in that said positioning opening is provided in the center of said front face. 3. Cartouche selon la revendication 2 caractérisée en ce qu'une découpe pour marteau de frappe est ménagée dans la partie supérieure de ladite face avant.3. Cartridge according to claim 2 characterized in that a cutout for a hammer is formed in the upper part of said front face. 4. Cartouche selon l'une quelconque des revendications 1 à 3 caractérisée en ce qu'elle comporte un guide-ruban solidaire de la partie supérieure dudit boftier.4. Cartridge according to any one of claims 1 to 3 characterized in that it comprises a tape guide secured to the upper part of said cabinet. 5. Cartouche selon la revendication 4 caractérisée en ce que ledit boîtier présente des éléments de support intérieurs dans lesquels est fixé le guide ruban.5. Cartridge according to claim 4 characterized in that said housing has internal support elements in which is fixed the tape guide. 6. Cartouche selon l'une quelconque des revendications 1 à 5 caractérisée en ce qu'elle comporte un guide-papier solidaire de la partie supérieure de ladite face arrière.6. Cartridge according to any one of claims 1 to 5 characterized in that it comprises a paper guide secured to the upper part of said rear face. 7. Cartouche selon la revendication 1 caractérisée en ce que lesdits moyens de retenue sont constitués par un enfoncement ménagé dans la surface intérieure de ladite face arrière.7. Cartridge according to claim 1 characterized in that said retaining means consist of a recess formed in the inner surface of said rear face. 8. Cartouche selon la revendication 7 caractérisée en ce que ledit élément flexible est une lame flexible incurvée vers ladite ouverture de positionnement et dont les extrémités sont retenues dans ledit enfoncement.8. Cartridge according to claim 7 characterized in that said flexible element is a flexible blade curved towards said positioning opening and the ends of which are retained in said recess. 9. Cartouche selon la revendication 8 caractérisée en ce que lesdites faces avant et arrière sont suffisamment proches l'une de l'autre pour que la surface intérieure de ladite face avant porte contre la partie incurvée de ladite lame flexible afin de maintenir lesdites extrémités de ladite lame flexible dans ledit enfoncement.9. Cartridge according to claim 8 characterized in that said front and rear faces are close enough to each other so that the inner surface of said front face bears against the curved part of said flexible blade in order to maintain said ends of said flexible blade in said recess. 10. Cartouche selon la revendication 9 caractérisée en ce que ledit enfoncement est suffisamment long pour continuer de recevoir les extrémités de la lame flexible lors de la déformation de celle-ci due à l'introduction d'un élément d'impression dans la cartouche.10. Cartridge according to claim 9 characterized in that said recess is long enough to continue receiving the ends of the flexible blade during the deformation thereof due to the introduction of a printing element into the cartridge. 11. Cartouche selon la revendication 10 caractérisée en ce que ledit enfoncement et ladite lame flexible sont orientés parallèlement à la direction de l'introduction d'un élément d'impression dans la cartouche.11. Cartridge according to claim 10 characterized in that said recess and said flexible blade are oriented parallel to the direction of introduction of a printing element into the cartridge. 12. Cartouche selon l'une quelconque des revendications 1 à 11 caractérisée en ce que ladite lame flexible est plus large que ladite ouverture de positionnement.12. Cartridge according to any one of claims 1 to 11 characterized in that said flexible blade is wider than said positioning opening. 13. Cartouche selon la revendication 12 caractérisée en ce que ladite lame flexible est plus longue que ladite ouverture de positionnement.13. Cartridge according to claim 12 characterized in that said flexible blade is longer than said positioning opening. 14. Cartouche selon l'une quelconque des revendications 1 à 13 caractérisée en ce que ladite ouverture d'orientation, prise dans son ensemble, est de forme asymétrique.14. Cartridge according to any one of claims 1 to 13 characterized in that said orientation opening, taken as a whole, is of asymmetrical shape. 15. Cartouche selon l'une quelconque des revendications 1 à 14 caractérisée en ce que lesdites faces avant et arrière sont suffisamment proches l'une de l'autre pour qu'un accès à l'intérieur de la cartouche par l'opérateur ne puisse se faire qu'au travers de ladite ouverture de positionnement.15. Cartridge according to any one of claims 1 to 14 characterized in that said front and rear faces are close enough to each other so that access to the interior of the cartridge by the operator can not be done only through said positioning opening.
EP79104892A 1978-12-11 1979-12-04 Print disc cartridge Expired EP0013346B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US968321 1978-12-11
US05/968,321 US4264221A (en) 1978-12-11 1978-12-11 Print element cartridge

Publications (2)

Publication Number Publication Date
EP0013346A1 true EP0013346A1 (en) 1980-07-23
EP0013346B1 EP0013346B1 (en) 1981-12-09

Family

ID=25514069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104892A Expired EP0013346B1 (en) 1978-12-11 1979-12-04 Print disc cartridge

Country Status (9)

Country Link
US (1) US4264221A (en)
EP (1) EP0013346B1 (en)
JP (1) JPS605191B2 (en)
AU (1) AU527731B2 (en)
BR (1) BR7908073A (en)
CA (1) CA1122145A (en)
DE (1) DE2961565D1 (en)
ES (1) ES486350A1 (en)
IT (1) IT1163740B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406616A1 (en) * 1983-02-23 1984-08-23 Ricoh Co., Ltd., Tokio/Tokyo HOLDING DEVICE FOR DETACHABLE HOLDING A CASSETTE WITH A TYPE WHEEL AND CASSETTE FOR HOUSING A TYPE WHEEL
DE3606545C1 (en) * 1986-02-28 1987-04-16 Triumph Adler Ag Device for coupling a type wheel with a rotary adjusting shaft in typewriters or similar machines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465387A (en) * 1982-09-30 1984-08-14 Data Motion, Inc. Daisy wheel mounting apparatus
US4591282A (en) * 1984-06-29 1986-05-27 International Business Machines Corporation Drive mechanism for a ribbon disc
US5098208A (en) * 1990-01-12 1992-03-24 Smith Corona Corporation Ribbon cassette with integral paper guide
US5074689A (en) * 1990-01-12 1991-12-24 Smith Corona Corporation Ribbon cassette with integral paper guide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380139A1 (en) * 1977-02-10 1978-09-08 Xerox Corp IMPACT PRINTER WITH CARTRIDGE PRINTING WHEEL
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1172854A (en) * 1915-10-16 1916-02-22 Underwood Typewriter Co Type-writing machine.
FR2154985A5 (en) * 1971-10-01 1973-05-18 Honeywell Bull
US3887055A (en) * 1973-12-13 1975-06-03 Ibm Card holder
DE2414127A1 (en) * 1974-03-23 1975-10-02 Olympia Werke Ag DEVICE FOR CHANGING A CAPED TYPE HEAD FOR TYPING OR SIMILAR OFFICE MACHINES
US3926312A (en) * 1974-09-09 1975-12-16 Ibm Disk pack enclosure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380139A1 (en) * 1977-02-10 1978-09-08 Xerox Corp IMPACT PRINTER WITH CARTRIDGE PRINTING WHEEL
US4124312A (en) * 1977-02-10 1978-11-07 Xerox Corporation Impact printer with print wheel cartridge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406616A1 (en) * 1983-02-23 1984-08-23 Ricoh Co., Ltd., Tokio/Tokyo HOLDING DEVICE FOR DETACHABLE HOLDING A CASSETTE WITH A TYPE WHEEL AND CASSETTE FOR HOUSING A TYPE WHEEL
DE3606545C1 (en) * 1986-02-28 1987-04-16 Triumph Adler Ag Device for coupling a type wheel with a rotary adjusting shaft in typewriters or similar machines
US4820066A (en) * 1986-02-28 1989-04-11 Ta Triumph-Adler Aktiengesellschaft Method and device for coupling a cassette supported typewheel to a typewheel positioning shaft in typewriters or similar machines

Also Published As

Publication number Publication date
JPS5579159A (en) 1980-06-14
IT7927735A0 (en) 1979-11-30
AU5254779A (en) 1980-06-19
ES486350A1 (en) 1980-09-16
BR7908073A (en) 1980-07-22
AU527731B2 (en) 1983-03-17
EP0013346B1 (en) 1981-12-09
JPS605191B2 (en) 1985-02-08
US4264221A (en) 1981-04-28
CA1122145A (en) 1982-04-20
DE2961565D1 (en) 1982-02-04
IT1163740B (en) 1987-04-08

Similar Documents

Publication Publication Date Title
EP0712667B1 (en) Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft
CH639617A5 (en) REFILLABLE PACKAGING BOTTLE, PARTICULARLY FOR PERFUMERY PRODUCTS.
EP0013719B1 (en) Print disc cassette assembly
FR2775679A1 (en) CAN OPENER
EP0013346A1 (en) Print disc cartridge
EP0078203A1 (en) Safety-belt retractor
EP0013300B1 (en) Printing element with type-carrying wheel contained in a cartridge
EP1218200B1 (en) Device for unlocking a compartment of an opening mechanism
FR2783080A1 (en) RECEIVING TRAY AND HOUSING OF AT LEAST ONE CIRCULAR INFORMATION STORAGE DISC
EP0030624A2 (en) Ribbon cartridge and its locking device in a type writer
FR2504858A1 (en) INK RIBBON CASSETTE FOR WRITING MACHINES, PRINTERS OR SIMILAR MACHINES
WO2019115887A1 (en) Castor for furniture
FR2574708A1 (en) ROLLER FOR CORRECTION TAPE FOR WRITING MACHINE
FR2474121A1 (en) Free wheel clutch - has cams fitting in slots inside cage and located by side spring and plate to retain it
EP0078204B1 (en) Self locking retractor for safety belts
FR3080109A1 (en) DECAPSULATOR DEVICE - RECAPSULATOR
EP3428738B1 (en) Drive and positioning system and jumper for implementing said system
CH712392A2 (en) Device for holding a mobile.
BE864939A (en) CORE FOR WINDING LABEL TAPE
FR2762827A1 (en) MOBILE ROTATION SHUTTER FOR LIQUID PACKAGING BOX
CH648790A5 (en) DEVICE FOR THE REMOVABLE FIXING OF A PRINTING MACHINE CHARACTER DISC ON THE DRIVE SHAFT WHICH DRIVES IT.
WO2023094777A1 (en) Device for packaging a product such as a cosmetic product
FR2846774A1 (en) Disc e.g. digital versatile disc conditioning case, is made of plate with radial shoulders to recover marginal area of disc, where shoulders allow disc insertion and removal by elastic deformation of plate part having thrust washer
FR2892663A1 (en) Component for a printing device comprises walls of which one is shaped to form a spring element interacting with the other wall to lead the spool to the blocked position
FR3000010A1 (en) Assembly for fastening spare wheel into cavity formed in floor part of car body, has support supporting against edge of light unit by rotating rod, and cap positioned at opposite control end of rod and resting against wheel rim

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR GB NL

17P Request for examination filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR GB NL

REF Corresponds to:

Ref document number: 2961565

Country of ref document: DE

Date of ref document: 19820204

REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: LEXMARK INTERNATIONAL, INC.

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: LEXMARK INTERNATIONAL, INC. TE LEXINGTON, KENTUCKY

REG Reference to a national code

Ref country code: CH

Ref legal event code: PVP

Owner name: J.P. MORGAN DELAWARE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981118

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981119

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981120

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19981126

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19981127

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19981210

Year of fee payment: 20

BE20 Be: patent expired

Free format text: 19991204 *LEXMARK INTERNATIONAL INC.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19991203

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19991203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19991204

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Effective date: 19991203

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 19991204

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT