EP0098317B1 - Mounting arrangement for the oscillating frame in a matrix line printer - Google Patents

Mounting arrangement for the oscillating frame in a matrix line printer Download PDF

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Publication number
EP0098317B1
EP0098317B1 EP82105952A EP82105952A EP0098317B1 EP 0098317 B1 EP0098317 B1 EP 0098317B1 EP 82105952 A EP82105952 A EP 82105952A EP 82105952 A EP82105952 A EP 82105952A EP 0098317 B1 EP0098317 B1 EP 0098317B1
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EP
European Patent Office
Prior art keywords
leaf springs
frame
roller
oscillating
printer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82105952A
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German (de)
French (fr)
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EP0098317A1 (en
Inventor
Josef Pichler
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.)
Mannesmann Tally GmbH Austria
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Mannesmann Tally GmbH Austria
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 Mannesmann Tally GmbH Austria filed Critical Mannesmann Tally GmbH Austria
Priority to EP82105952A priority Critical patent/EP0098317B1/en
Priority to DE8282105952T priority patent/DE3273444D1/en
Priority to AT82105952T priority patent/ATE22416T1/en
Publication of EP0098317A1 publication Critical patent/EP0098317A1/en
Application granted granted Critical
Publication of EP0098317B1 publication Critical patent/EP0098317B1/en
Expired legal-status Critical Current

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    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/245—Print head assemblies line printer type

Definitions

  • the invention relates to a matrix line printer with an oscillating frame that can be moved back and forth in parallel to the support surface for the recording medium in front of the printing abutment, on which the printing elements are arranged in a row next to one another and which is kept oscillatable at both ends by means of leaf springs, one of which Swinging motion transmitting link is articulated at least on the swing frame and in the two end regions of the swing frame in pairs in a common horizontal plane movable outer and inner leaf springs are provided so that the swing frame is movable in the horizontal plane of the pressure abutment.
  • Such leaf spring bearings for the swing frame serve a precisely parallel movement in relation to the pressure abutment, which usually consists of a pressure roller.
  • the carriage generally does not move on a straight line transverse to the recording medium, but on a curve, as a result of which, in relation to the width of the recording medium, different distances between the printing elements and the recording medium or a deviation from the linear pressure geometry.
  • Such differences have a practical effect on the typeface, with writing in the middle of the record carrier with a greater pressure than on the two outer areas. It is understood that the pressure force of the printing elements must be kept uniform over the entire width of the recording medium with a view to making several copies. On the other hand, any influences that produce an uneven print image must also be excluded.
  • the high-speed printer described at the outset is known from DE-B1-26 45 740.
  • the pairs of leaf springs are comb-like and have three tongues, of which the first and third tongues are attached to the printer frame with their free ends lying in a vertical plane, while the middle second tongue with its free end is attached to one end of the slide plate (oscillating frame) ) attacks.
  • the springs of each pair run at an acute angle to each other because they are directly connected to each other at their free ends. In addition, these ends of each pair move independently of one another. This does not eliminate the problem of arch movement.
  • the known solution is therefore not suitable for avoiding the disadvantages of the arc movements.
  • the present invention is therefore based on the object of proposing a more suitable solution in order to eliminate the disadvantageous consequences of the arc movement of leaf springs.
  • each pair of leaf springs consists of two exactly parallel leaf springs, each of which has the outer leaf springs with their pressure-bearing ends on the printer frame and with their free ends via a corresponding spacer with the free ones Ends of the inner leaf springs are firmly connected, the pressure-abutment-side ends are in turn fastened to the end regions of the oscillating frame which can move back and forth between the printer frame bearing locations of the outer leaf springs, and the free ends of the inner leaf springs are rigidly connected to one another via a connecting web.
  • the parallel movements of the swing frame relative to the pressure abutment are also more precise in that a drive rod that bypasses the leaf springs is attached to the swing frame in an articulated manner.
  • the drive rod for a linear actuator is resiliently attached to the swing frame.
  • the resilient attachment has no harmful influence on the vibration behavior of the swing frame, which is essentially due to the parallel movement of the leaf springs.
  • a kinematics that is completely balanced in terms of vibration technology is also achieved by providing a counterweight of the same mass that can be moved in opposite directions to the oscillating frame.
  • the platen 1 consists of the printing roller 1a, which serves as a support for the recording medium 2 (the recording medium usually consists of a paper web).
  • the print characters are generated by print hammers or print needles, which are not shown themselves, but on the Swing frame 3 arranged side by side form a horizontal row.
  • the movement path of the swing frame is 10 to 20 mm or at least one or two character widths of alphanumeric or other characters.
  • the printing roller 1 is rotatably supported in bearings on the printer frame 4.
  • the swing frame 3 has the two end regions 3a and 3b.
  • Leaf springs 5a and 5b or 6a and 6b are arranged in pairs in these end regions.
  • the leaf springs 5a and 6b are attached to a component 4a and 4c of the printer frame 4 with one end by means of screws 4b.
  • the exactly parallel oscillating movement 7 of the oscillating frame 3 is advantageously not disturbed by the drive 8, because the oscillating movement 7 is transmitted via the joint 10 by means of the connecting member 9, which consists of the drive rod 9a.
  • the drive rod 9a runs next to the leaf springs 6a and 6b and avoids touching them.
  • the drive 8 which is shown as a linear actuator 11
  • the joints 10 and 12 prevent the transmission of transverse forces which are not in the direction of (or parallel to) the oscillating movement 7. It is also expedient to avoid superimposed vibrations by means of a resiliently elastic fastening of the drive rod 9a to the oscillating frame 3.
  • the storage of the now free ends of the leaf springs 5a and 5b or 6a and 6b is designed as a "joint" 13a or 13b.
  • the leaf springs 5a and 5b are connected to a spacer 14 and the leaf springs 6a and 6b to the spacer 15.
  • the connecting means consists of the screws 16 shown symbolically.
  • the greater thickness of the spacers 14 and 15 additionally prevents the oscillating frame 3 from moving in an arc because the leaf springs 5a, 5b and 6a, 6b can only move in parallel.
  • the described embodiment is already functional.
  • the movement kinematics can still be improved even further. This is ensured by a connecting web 17, which reinforces the tendency that the leaf springs 5a and 5b or 6a and 6b are always moved in parallel.

Abstract

1. A matrix line printer featuring an oscillating frame (3) ahead of the roller (1) with its bearing face for the record carrier (2) and capable of forward and backward motion parallel thereto, the print elements being arranged thereon in a single row, and oscillation being enabled by means of leaf springs at either end, a link (9), transmitting the oscillation, being carried in hinged mountings at least at the oscillating frame (3) and its two end sectors (3a and 3b) being provided with paired inner and outer leaf springs jointly movable in the horizontal in such manner that the selfsame frame (3) can move in the horizontal plans of the roller (1), this assembly being characterized by : each leaf spring pair consisting of exactly parallel leaf springs (5a, 5b and/or 6a, 6b) whereof the outer ones (5a, 6b) are fixed by their roller-side ends at the printer frame (4) whereas their free ends are connected in fixed mounting via appropriate spacers (14, 15) to the free ends of the inner leaf springs (5b, 6a), the roller - side ends of these inner leaf springs being in turn connected with the end sectors (3a, 3b) of the oscillating frame (3) which can thus move in either direction between the printer frame bearing points (4a, 4c) and the outer leaf springs (5a, 6b) whilst the free ends of the inner leaf springs (5b, 6a) are rigidly connected to each other by a bar (17).

Description

Die Erfindung betrifft einen Matrix-Zeilendrucker mit einem vor dem Druckwiderlager zu dessen Auflagefläche für den Aufzeichnungsträger parallel hin- und herbewegbaren Schwingrahmen, auf dem die Druckelemente in einer Reihe nebeneinander angeordnet sind und der an den beiden Enden mittels Blattfedern schwingfähig gehalten ist, wobei ein die Schwingbewegung übertragendes Verbindungsglied zumindest am Schwingrahmen gelenkig befestigt ist und in den beiden Endbereichen des Schwingrahmens jeweils paarweise in einer gemeinsamen horizontalen Ebene bewegbare äußere und innere Blattfedern vorgesehen sind, so daß der Schwingrahmen in der horizontalen Ebene des Druckwiderlagers bewegbar ist.The invention relates to a matrix line printer with an oscillating frame that can be moved back and forth in parallel to the support surface for the recording medium in front of the printing abutment, on which the printing elements are arranged in a row next to one another and which is kept oscillatable at both ends by means of leaf springs, one of which Swinging motion transmitting link is articulated at least on the swing frame and in the two end regions of the swing frame in pairs in a common horizontal plane movable outer and inner leaf springs are provided so that the swing frame is movable in the horizontal plane of the pressure abutment.

Derartige Blattfeder-Lagerungen für den Schwingrahmen dienen einer genau parallelen Bewegung in bezug auf das Druckwiderlager, das meist aus einer Druckwalze besteht. Infolge der bei einer Auslenkung der Blattfedern erfolgenden Verkürzung bewegt sich der Schlitten im allgemeinen nicht auf einer Geraden quer zum Aufzeichnungsträger, sondern auf einer Kurve, wodurch sich, bezogen auf die Breite des Aufzeichnungsträgers unterschiedliche Abstände zwischen den Druckelementen und dem Aufzeichnungsträger bzw. eine Abweichung von der linearen Druckgeometrie ergeben. Praktisch wirken sich solche Differenzen auf das Schriftbild aus, wobei in der Mitte des Aufzeichnungsträgers mit einer größeren Druckkraft geschrieben wird als an den beiden Außenbereichen. Es versteht sich, daß schon im Hinblick auf die Anfertigung von mehreren Kopien die Druckkraft der Druckelemente über die gesamte Breite des Aufzeichnungsträgers gleichmäßig gehalten werden muß. Andererseits müssen auch jegliche Einflüsse ausgeschlossen werden, die ein ungleichmäßiges Druckbild erzeugen.Such leaf spring bearings for the swing frame serve a precisely parallel movement in relation to the pressure abutment, which usually consists of a pressure roller. As a result of the shortening that occurs when the leaf springs are deflected, the carriage generally does not move on a straight line transverse to the recording medium, but on a curve, as a result of which, in relation to the width of the recording medium, different distances between the printing elements and the recording medium or a deviation from the linear pressure geometry. Such differences have a practical effect on the typeface, with writing in the middle of the record carrier with a greater pressure than on the two outer areas. It is understood that the pressure force of the printing elements must be kept uniform over the entire width of the recording medium with a view to making several copies. On the other hand, any influences that produce an uneven print image must also be excluded.

Der eingangs beschriebene Schnelldrucker ist aus der DE-B1-26 45 740 bekannt. Hierbei sind die Blattfedernpaare kammartig ausgebildet und weisen drei Zungen auf, von denen die erste und dritte Zunge mit ihren in einer senkrechten Ebene liegenden freien Enden am Druckerrahmen befestigt sind, während die mittlere zweite Zunge mit ihrem freien Ende an jeweils einem Ende der schlittenplatte (Schwingrahmen) angreift. Dabei verlaufen die Federn jedes Paares im spitzen Winkel zueinander, da sie an ihren freien Enden direkt miteinander verbunden sind. Außerdem bewegen sich diese Enden jedes Paares unabhängig voneinander. Dadurch ist das Problem der Bogenbewegung nicht beseitigt. Die bekannte Lösung ist daher nicht geeignet, die Nachteile der Bogenbewegungen zu vermeiden.The high-speed printer described at the outset is known from DE-B1-26 45 740. The pairs of leaf springs are comb-like and have three tongues, of which the first and third tongues are attached to the printer frame with their free ends lying in a vertical plane, while the middle second tongue with its free end is attached to one end of the slide plate (oscillating frame) ) attacks. The springs of each pair run at an acute angle to each other because they are directly connected to each other at their free ends. In addition, these ends of each pair move independently of one another. This does not eliminate the problem of arch movement. The known solution is therefore not suitable for avoiding the disadvantages of the arc movements.

Der vorliegenden Erfindung liegt demzufolge die Aufgabe zugrunde, eine geeignetere Lösung vorzuschlagen, um die nachteiligen Folgen der Bogenbewegung von Blattfedern zu beseitigen.The present invention is therefore based on the object of proposing a more suitable solution in order to eliminate the disadvantageous consequences of the arc movement of leaf springs.

Die gestellte Aufgabe wird bei dem eingangs bezeichneten Matrix-Zeilendrucker erfindungsgemäß dadurch gelöst, daß jedes Blattfederpaar aus zwei genau parallelen Blattfedern besteht, von denen jeweils die äußeren Blattfedern mit ihren druckwiderlagerseitigen Enden am Druckerrahmen und mit ihren freien Enden über jeweils ein entsprechendes Distanzstück mit den freien Enden der inneren Blattfedern fest verbunden sind, deren druckwiderlagerseitige Enden wiederum an den Endbereichen des zwischen den Druckerrahmenlagerstellen der äußeren Blattfedern hin- und herbeweglichen Schwingrahmens befestigt sind, und daß die freien Enden der inneren Blattfedern über einen Verbindungssteg starr miteinander verbunden sind. Diese Lösung bedient sich gewissermaßen des Parallelogramm-Prinzips, von dem sicher gesagt werden kann, daß der Schwingrahmen als Glied des Parallelogramms keine kurvenförmige Bewegung ausführt. Die Erfindung ermöglicht daher tatsächlich eine Vermeidung der Nachteile aus einer bogenförmigen Bewegung des Schwingrahmens, da der erfindungsgemäß vorgesehene Verbindungssteg die Auslenkung beider Blattfederpaare genau koordiniert und zwangsweise auf den gleichen Betrag einjustiert. Die erfindungsgemäße Gestaltung führt außerdem zu einer einfachen Befestigungsweise und schafft daher die gewünschten klaren Bewegungsverhältnisse. Derartige Blattfederpaare sind außerdem fertigungstechnisch einfacher herzustellen als gestanzte Zungen.The object is achieved in the matrix line printer referred to at the outset according to the invention in that each pair of leaf springs consists of two exactly parallel leaf springs, each of which has the outer leaf springs with their pressure-bearing ends on the printer frame and with their free ends via a corresponding spacer with the free ones Ends of the inner leaf springs are firmly connected, the pressure-abutment-side ends are in turn fastened to the end regions of the oscillating frame which can move back and forth between the printer frame bearing locations of the outer leaf springs, and the free ends of the inner leaf springs are rigidly connected to one another via a connecting web. This solution makes use of the parallelogram principle, so to speak, of which it can certainly be said that the oscillating frame as a member of the parallelogram does not perform any curved movement. The invention therefore actually makes it possible to avoid the disadvantages of an arcuate movement of the oscillating frame, since the connecting web provided according to the invention coordinates the deflection of both leaf spring pairs precisely and forcibly adjusts them to the same amount. The design according to the invention also leads to a simple manner of attachment and therefore creates the desired clear movement conditions. Such pairs of leaf springs are also easier to manufacture in terms of production technology than punched tongues.

Die Parallel-Bewegungen des schwingrahmens gegenüber dem Druckwiderlager werden außerdem dadurch genauer, daß eine die Blattfedern berührungslos umgehende Antriebsstange am Schwingrahmen gelenkig befestigt ist.The parallel movements of the swing frame relative to the pressure abutment are also more precise in that a drive rod that bypasses the leaf springs is attached to the swing frame in an articulated manner.

Es kann weiterhin vorteilhaft sein, wenn die Antriebsstange für einen Schubantrieb am Schwingrahmen federnd befestigt ist. Die federnde Befestigung übt keinen schädlichen Einfluß auf das Schwingverhalten des Schwingrahmens aus, das im wesentlichen durch die parallel bewegten Blattfedern begründet wird.It can also be advantageous if the drive rod for a linear actuator is resiliently attached to the swing frame. The resilient attachment has no harmful influence on the vibration behavior of the swing frame, which is essentially due to the parallel movement of the leaf springs.

Eine schwingungstechnisch vollkommen ausgeglichene Kinematik wird außerdem dadurch erzielt, daß zum Schwingrahmen ein gegenläufig bewegbares Ausgleichsgewicht gleicher Masse vorgesehen ist.A kinematics that is completely balanced in terms of vibration technology is also achieved by providing a counterweight of the same mass that can be moved in opposite directions to the oscillating frame.

Die einzige Figur der Zeichnung zeigt einen Matrix-Zeilendrucker in Draufsicht, wobei im wesentlichen nur die für das Verständnis der Erfindung notwendigen Teile bzw. Baugruppen dargestellt sind.The only figure of the drawing shows a top view of a line matrix printer, essentially only the parts or assemblies necessary for understanding the invention are shown.

Das Druckwiderlager 1 besteht aus der Druckwalze 1a, die als Auflage für den Aufzeichnungsträger 2 dient (der Aufzeichnungsträger besteht meist aus einer Papierbahn). Die Druckzeichen werden von Druckhämmern oder Drucknadeln erzeugt, die selbst nicht dargestellt sind, jedoch auf dem Schwingrahmen 3 nebeneinander angeordnet eine horizontale Reihe bilden. Der Bewegungsweg des Schwingrahmens beträgt 10 bis 20 mm oder zumindest eine bis zwei Zeichenbreiten alphanumerischer oder anderer Schriftzeichen.The platen 1 consists of the printing roller 1a, which serves as a support for the recording medium 2 (the recording medium usually consists of a paper web). The print characters are generated by print hammers or print needles, which are not shown themselves, but on the Swing frame 3 arranged side by side form a horizontal row. The movement path of the swing frame is 10 to 20 mm or at least one or two character widths of alphanumeric or other characters.

Die Druckwalze 1 ist drehbar in Lagern an dem Druckerrahmen 4 gelagert. Der Schwingrahmen 3 weist die beiden Endbereiche 3a und 3b auf. In diesen Endbereichen sind jeweils paarweise Blattfedern 5a und 5b bzw. 6a und 6b angeordnet. Hierbei sind die Blattfedern 5a und 6b an einem Bauteil 4a bzw. 4c des Druckerrahmens 4 mit ihrem einen Ende mittels Schrauben 4b befestigt. Die exakt parallele Schwingbewegung 7 des Schwingrahmens 3 wird vorteilhafterweise durch den Antrieb 8 nicht gestört, weil die Schwingbewegung 7 mittels des Verbindungsgliedes 9, das aus der Antriebsstange 9a besteht, über das Gelenk 10 übertragen wird. Die Antriebsstange 9a verläuft neben den Blattfedern 6a und 6b und vermeidet eine Berührung derselben.The printing roller 1 is rotatably supported in bearings on the printer frame 4. The swing frame 3 has the two end regions 3a and 3b. Leaf springs 5a and 5b or 6a and 6b are arranged in pairs in these end regions. Here, the leaf springs 5a and 6b are attached to a component 4a and 4c of the printer frame 4 with one end by means of screws 4b. The exactly parallel oscillating movement 7 of the oscillating frame 3 is advantageously not disturbed by the drive 8, because the oscillating movement 7 is transmitted via the joint 10 by means of the connecting member 9, which consists of the drive rod 9a. The drive rod 9a runs next to the leaf springs 6a and 6b and avoids touching them.

Je nach Ausgestaltung des Antriebs 8, der als Schubantrieb 11 dargestellt ist, ergibt sich die Möglichkeit, zusätzliche Gelenke, wie z. B. das Gelenk 12, vorzusehen. Die Gelenke 10 und 12 verhindern die Übertragung von Querkräften, die nicht in Richtung der (oder parallel zu der) Schwingbewegung 7 liegen. Es ist auch zweckmäßig, Überlagerungsschwingungen durch eine federnd elastische Befestigung der Antriebsstange 9a am Schwingrahmen 3 zu vermeiden.Depending on the design of the drive 8, which is shown as a linear actuator 11, there is the possibility of additional joints, such as. B. the joint 12 to provide. The joints 10 and 12 prevent the transmission of transverse forces which are not in the direction of (or parallel to) the oscillating movement 7. It is also expedient to avoid superimposed vibrations by means of a resiliently elastic fastening of the drive rod 9a to the oscillating frame 3.

Die Lagerung der jetzt noch freien Enden der Blattfedern 5a und 5b bzw. 6a und 6b ist als "Gelenk" 13a bzw. 13b ausgeführt. Im dargestellten Beispiel sind die Blattfedern 5a und 5b mit einem Distanzstück 14 und die Blattfedern 6a und 6b mit dem Distanzstück 15 verbunden. Das Verbindungsmittel besteht aus den sinnbildlich dargestellten Schrauben 16. Die größere Dicke der Distanzstucke 14 und 15 verhindert eine Bogenbewegung des Schwingrahmens 3 zusätzlich, weil sich die Blattfedern 5a, 5b bzw. 6a, 6b nur parallel bewegen können.The storage of the now free ends of the leaf springs 5a and 5b or 6a and 6b is designed as a "joint" 13a or 13b. In the example shown, the leaf springs 5a and 5b are connected to a spacer 14 and the leaf springs 6a and 6b to the spacer 15. The connecting means consists of the screws 16 shown symbolically. The greater thickness of the spacers 14 and 15 additionally prevents the oscillating frame 3 from moving in an arc because the leaf springs 5a, 5b and 6a, 6b can only move in parallel.

Die beschriebene Ausführungsform ist bereits funktionsfähig. Die Bewegungskinematik läßt sich trotzdem noch weiter verbessern. Hierfür sorgt ein Verbindungssteg 17, der die Tendenz verstärkt, daß die Blattfedern 5a und 5b bzw. 6a und 6b stets parallel bewegt werden.The described embodiment is already functional. The movement kinematics can still be improved even further. This is ensured by a connecting web 17, which reinforces the tendency that the leaf springs 5a and 5b or 6a and 6b are always moved in parallel.

In der Zeichnung nicht sichtbar, befindet sich unterhalb des Schwingrahmens 3 ein Ausgleichsgewicht gleichgroßer Masse, das jedoch gegenläufig zum Schwingrahmen 3 bewegt werden muß.Not visible in the drawing, there is a balancing weight of the same size below the swing frame 3, but this must be moved in the opposite direction to the swing frame 3.

Claims (4)

1. A MATRIX LINE PRINTER
featuring an oscillating frame (3) ahead of the roller (1)
with its bearing face for the record carrier (2) and capable of forward and backward motion parallel thereto,
the print elements being arranged thereon in a single row,
and oscillation being enabled by means of leaf springs at either end,
a link (9), transmitting the oscillation, being carried in hinged mountings at least at the oscillating frame (3) and its two end sectors (3a and 3b) being provided with paired inner and outer leaf srings jointly movable in the horizontal in such manner that the selfsame frame (3) can move in the horizontal plans of the roller (1), this assembly being characterized by:
each leaf spring pair consisting of exactly parallel leaf springs (5a, 5b and/or 6a, 6b) whereof the outer ones (5a, 6b) are fixed by their roller-side ends at the printer frame (4) whereas their free ends are connected in fixed mounting via appropriate spacers (14,15) to the free ends of the inner leaf springs (5b, 6a),
the roller - side ends of these inner leaf springs being in turn connected with the end sectors (3a, 3b) of the oscillating frame (3) which can thus move in either direction betwen the printer frame bearing points (4a, 4c) and the outer leaf springs (5a, 6b) whilst the free ends of the inner leaf springs (5b, 6a) are rigidly connected to each other by a bar (17).
2. A MATRIX LINE PRINTER
to Claim 1,
characterized by:
a drive rod (9a), circumventing (without contact) one leaf spring (5a), being carried in a hinged mounting at the oscilating frame (3).
3. A MATRIX LINE PRINTER
to Claim 1 or Claim 2, characterized by:
the drive rod (9a) being resiliently mounted at the oscillating frame (3) so as to accommodate a push rod drive (11).
4. A MATRIX LINE PRINTER
to Claims 1 to 3,
characterized by:
a balancing weight of equivalent mass being provided in conjunction with and movable opposed to the oscillating frams (3).
EP82105952A 1982-07-03 1982-07-03 Mounting arrangement for the oscillating frame in a matrix line printer Expired EP0098317B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82105952A EP0098317B1 (en) 1982-07-03 1982-07-03 Mounting arrangement for the oscillating frame in a matrix line printer
DE8282105952T DE3273444D1 (en) 1982-07-03 1982-07-03 Mounting arrangement for the oscillating frame in a matrix line printer
AT82105952T ATE22416T1 (en) 1982-07-03 1982-07-03 DEVICE FOR SUPPORTING THE SWING FRAME IN A MATRIX LINE PRINTER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82105952A EP0098317B1 (en) 1982-07-03 1982-07-03 Mounting arrangement for the oscillating frame in a matrix line printer

Publications (2)

Publication Number Publication Date
EP0098317A1 EP0098317A1 (en) 1984-01-18
EP0098317B1 true EP0098317B1 (en) 1986-09-24

Family

ID=8189116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105952A Expired EP0098317B1 (en) 1982-07-03 1982-07-03 Mounting arrangement for the oscillating frame in a matrix line printer

Country Status (3)

Country Link
EP (1) EP0098317B1 (en)
AT (1) ATE22416T1 (en)
DE (1) DE3273444D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1328576C (en) * 1988-01-19 1994-04-19 Gordon Brent Barrus Printer having improved shuttle counterbalance, cam oiler and integral flywheel motor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514216A (en) * 1978-07-14 1980-01-31 Nec Corp Printer
US4227455A (en) * 1978-12-29 1980-10-14 International Business Machines Corporation Suspension arrangement for an oscillating body
US4387642A (en) * 1980-07-17 1983-06-14 Mannesmann Tally Corporation Bi-directional, constant velocity, carriage shuttling mechanisms

Also Published As

Publication number Publication date
EP0098317A1 (en) 1984-01-18
DE3273444D1 (en) 1986-10-30
ATE22416T1 (en) 1986-10-15

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