EP0163592B1 - Matrix print head with adjustable print wire guide - Google Patents
Matrix print head with adjustable print wire guide Download PDFInfo
- Publication number
- EP0163592B1 EP0163592B1 EP85730018A EP85730018A EP0163592B1 EP 0163592 B1 EP0163592 B1 EP 0163592B1 EP 85730018 A EP85730018 A EP 85730018A EP 85730018 A EP85730018 A EP 85730018A EP 0163592 B1 EP0163592 B1 EP 0163592B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adjustment
- printer
- matrix
- adjusting member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
-
- 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
- B41J2/25—Print wires
- B41J2/255—Arrangement of the print ends of the wires
Definitions
- the invention relates to a matrix printhead with an adjustable pressure needle guide, the pressure needle adjustment assembly with the pressure needle adjustment drive located in the printhead housing and the guide nozzle attached to the resilient adjustment member being arranged between the pressure abutment and the pressure needle drive assembly There is a connection between a magnetic core and the adjusting element.
- Such matrix print heads with adjustable print needle guidance are used for writing quick and / or fine writing, the quick writing with the unchanged position of the printing needle guidance being written in successive lines from left to right or from right to left, during which fine writing or a relatively quickly written fine writing is written by overwriting one and the same line twice in the same or opposite directions and adjusting the pressure needle guide.
- the needle gap is e.g. from seven to nine needles and can therefore be single column. It is of course possible, provided that the constructively available space in the matrix print head opens up such a construction, also to provide a plurality of adjacent needle gaps, each with seven to nine pressure needles arranged one above the other.
- Such a matrix print head with an adjustable print needle guide is known (DE-A-26 32 293), the print head having print wires arranged equidistantly in two columns and the print wire columns being displaceable in the vertical direction relative to one another. It is known that the printing wires of the columns are each arranged on a carrier element, one of which is arranged vertically displaceably on the print head carriage and the other leaf spring-held at the upper end via an electromagnetically or manually operated cam.
- the matrix print head with adjustable print needle guide described at the outset is known from "Patent Abstracts of Japan", Volume 5, No. 76 of May 20, 1981.
- the adjusting element forms the bottom of the pressure needle housing, so to speak, and the electromagnet is arranged perpendicular to the adjusting element, running transversely with the coil core.
- Such a design does not adequately protect the electromagnet.
- the adjustment element is not adequately protected even when the matrix print head is installed in transport.
- the electromagnet With a similar design ("Patent Abstracts of Japan" Volume 5, No. 101 from June 30, 1981), the electromagnet, whose magnetic core also runs perpendicular to the adjusting element, even sits on the print head carriage and therefore forms a component separate from the matrix print head. Here the electromagnet is even less protected and problematic with regard to the adjustment of the working air gap, which must be done from the underside of the carriage.
- the end positions of the guide mouthpiece represent a particular problem, which must be adhered to very precisely because of the printing accuracy desired for fine writing.
- the invention is therefore based on the object of providing a precise adjustment for the guide mouthpiece with easily manageable manufacturing tolerances, with a flat design in the area of the guide mouthpiece, with simple assembly and with sufficient adjustability of the parts important for the function in a generic matrix print head.
- the object is achieved in that the adjusting element is arranged above the pressure needles, that the electromagnet is approximately parallel to the adjusting element, that an armature bridge is connected to the magnetic core, the armature bridge determining the working air gap with the locking element and that the adjusting element consisting of a lever is designed in two parts and the two lever parts are articulated by means of a leaf spring for movement in the vertical plane.
- the invention makes it possible to create an accurate adjustment for the guide mouthpiece, to easily master the manufacturing tolerances of the individual parts and to achieve a flat design despite the required electromagnet in the area of the guide mouthpiece, and furthermore enables simple assembly, with a safe adjustment of the end positions of the adjusting member becomes.
- the invention improves the spring property of the known adjusting element in that a lever part can be rigid in and of itself, the spring action being generated by means of the leaf spring. With this solution, a largely accurate movement of the adjusting member is therefore possible, the pivoting movement of the adjusting member being carried out with a relatively small radius. Such a precise adjustment movement acts in the sense of a largely vertical adjustment in the vertical plane in front of the pressure abutment.
- a practical embodiment for the accommodation of the individual parts is advantageous in that the electromagnet and the armature bridge are arranged above the adjusting member.
- the adjustment option is also supported by the fact that the armature bridge is adjustably arranged on the magnetic core of the electromagnet. This measure allows adjustment work to be carried out on the matrix print head during or after assembly and also during operation.
- an adjustment means that can be actuated from the outside of the printhead housing is provided for the adjustment of the armature bridge. This measure promotes the accessibility of the setting means by the maintenance personnel.
- the accuracy of the matrix print head according to the invention is further increased by the fact that a fixed stop is provided for an end position of the adjusting member and that the adjusting member is under the force of a spring in the direction of the stop.
- the matrix print head with adjustable print needle guide is in the writing position opposite the platen 1 or the recording medium 1a or the ink ribbon 1b, the platen 1 being designed as a platen roller.
- the print needle drive assembly 2 with all the parts required for firing individual print needles 3 is not described in detail, because in the separate housing 4a of the print head housing 4, components common to the functions of the printer, such as e.g. Electromagnetic coils 5, yoke body 6, hinged armature 7, stop 8, pressure needle guide 3a, return spring 9 and rear pressure needle bearing 10 are included, which are only indirectly related to the invention and which can optionally also be selected in a different configuration.
- the print needle adjustment assembly 11 with the adjustment member 12, to which the guide mouthpiece 13 is fastened, is located in a separate housing 4b of the print head housing 4, which is connected to the housing 4a of the print head housing 4 with the insertion of spacers 14 to the matrix print head, which is connected by means of the fixing pins 29 is mounted on the carriage (not shown) of the matrix printer which is moved back and forth in front of the recording medium 1a.
- the adjusting member 12 consists of a resilient lever 15 with a plurality of curved lever sections.
- the guide mouthpiece 13 is fastened to the lever section 15a with a ruby for the printing needles 3.
- a lever section 15b runs almost parallel to the pressure needles 3 and an angled lever section 15c is connected to the housing 4b by means of the screw 16, the screw 16 simultaneously holding the magnetic core 17a with the winding 17b of the electromagnet 17 through the lever section 15c.
- the armature bridge 18, which forms the working air gap 19 with the lever section 15b is mounted on the magnetic core 17a.
- the adjusting member 12 can basically consist of a spring 15 made of resilient materials.
- the movement path of the guide mouthpiece 13 (corresponding to the working air gap 19) for the changeover from quick writing to fine writing is within the limits of 0.01 mm to 1 mm.
- An average movement path is approximately 0.15 mm.
- An articulated bearing represents the two-part design of the lever 15 as an adjusting member 12, the lever section 15b forming a gap 20 due to the division, which gap is bridged by the leaf spring 21, so that a play-free joint is created for the movement path in the vertical plane.
- the leaf spring 21 is fixed by spot welding on one lever part and by means of screws 22 on the other lever part of the lever section 15b.
- the anchor bridge 18 can be adjusted by means of adjusting means 23 which are freely accessible on the housing 4b and which have a threaded screw 23a, in order to adjust or adapt the size of the working air gap 19.
- the adjusting member 12 is adjustable between end positions that limit the movement path mentioned.
- the lower end position is formed by the fixed stop 24.
- a spring 25 presses the lever 15 against the stop 24.
- the upper end position is limited by the armature bridge 18 or the working air gap 19.
- the fixed stop 24 is designed so that the adjusting member 12 does not come into contact with the other printing wire guides 26, 27 and 28.
Abstract
Description
Die Erfindung betrifft einen Matrixdruckkopf mit verstellbarer Drucknadelführung, wobei zwischen Druckwiderlager und Drucknadelantriebsbaugruppe die Drucknadelverstellbaugruppe mit dem im Druckkopfgehäuse befindlichen Drucknadelverstellantrieb und das an dem federnden Verstellorgan befestigte Führungsmundstück angeordnet sind, wobei ferner das Verstellorgan im Bereich der Drucknadeln etwa parallel zu den Drucknadeln angeordnet ist und eine Verbindung zwischen einem Magnetkern und dem Verstellorgan vorliegt.The invention relates to a matrix printhead with an adjustable pressure needle guide, the pressure needle adjustment assembly with the pressure needle adjustment drive located in the printhead housing and the guide nozzle attached to the resilient adjustment member being arranged between the pressure abutment and the pressure needle drive assembly There is a connection between a magnetic core and the adjusting element.
Derartige Matrixdruckköpfe mit verstellbarer Drucknadelführung dienen dem Schreiben von Schnell- und/oder Schönschrift, wobei die Schnellschrift mit unveränderter Stellung der Drucknadelführung in aufeinanderfolgenden Zeilen von links nach rechts bzw. von rechts nach links geschrieben wird, während dem die Schönschrift bzw. eine relativ schnellgeschriebene Schönschrift durch zweimaliges Überschreiben ein und derselben Zeile in gleichsinnigen bzw. gegenläufigen Druckpässen und Verstellung der Drucknadelführung geschrieben wird. Hierbei besteht die Nadelspalte z.B. aus sieben bis neun Nadeln und kann somit einspaltig sein. Es ist selbstverständlich möglich, soweit der konstruktiv zur Verfügung stehende Raum im Matrixdruckkopf eine derartige Bauweise eröffnet, auch mehrere nebeneinanderliegende Nadelspalten mit jeweils sieben bis neun übereinanderangeordneten Drucknadeln vorzusehen.Such matrix print heads with adjustable print needle guidance are used for writing quick and / or fine writing, the quick writing with the unchanged position of the printing needle guidance being written in successive lines from left to right or from right to left, during which fine writing or a relatively quickly written fine writing is written by overwriting one and the same line twice in the same or opposite directions and adjusting the pressure needle guide. The needle gap is e.g. from seven to nine needles and can therefore be single column. It is of course possible, provided that the constructively available space in the matrix print head opens up such a construction, also to provide a plurality of adjacent needle gaps, each with seven to nine pressure needles arranged one above the other.
Ein solcher Matrixdruckkopf mit verstellbarer Drucknadelführung is bekannt (DE-A-26 32 293) wobei der Druckkopf in zwei Spalten äquidistant angeordnete Druckdrähte aufweist und wobei die Druckdrahtspalten zueinander in vertikaler Richtung verschiebbar sind. Hierbei ist es bekannt, daß die Druckdrähte der Spalten jeweils auf einem Trägerelement angeordnet sind, von denen das eine fest auf dem Druckkopfschlitten und das andere blattfedergehalten am oberen Ende über eine elektromagnetisch oder manuell zu betätigende Nocke vertikal verschiebbar angeordnet ist.Such a matrix print head with an adjustable print needle guide is known (DE-A-26 32 293), the print head having print wires arranged equidistantly in two columns and the print wire columns being displaceable in the vertical direction relative to one another. It is known that the printing wires of the columns are each arranged on a carrier element, one of which is arranged vertically displaceably on the print head carriage and the other leaf spring-held at the upper end via an electromagnetically or manually operated cam.
Es ist ferner bekannt (DE-A-30 41 877), das Verstellorgan des eingangs bezeichneten Matrixdruckkopfes aus einem Hebel zu bilden, der aus federndem Werkstoff hergestellt und um eine Achse schwenkbar gelagert ist. Ein solches Verstellorgan bedarf, wie sich gezeigt hat, einer genauen Bestimmung der Endlagen und einer Bauweise, die zu einem im Bereich des Druckwiderlagers flachen Druckkopf führt, um eine bessere Einsichtnahme auf den Druckvorgang zu ermöglichen. Außerdem soll eine wirtschaftliche Herstellung der Einzelteile gewährleistet sein, wozu auch eine leichte Montage zählt. Im übrigen ist es aus dieser Lösung bekannt, den Elektromagneten mit seiner Kern-Achse quer zum Verstellorgan anzuordnen, wodurch die Polenden des Kerns verlängert und quer abgestützt werden müssen. Diese Bauweise erfordert auch einen Queraufbau des Drucknadelgehäuses.It is also known (DE-A-30 41 877) to form the adjusting element of the matrix print head described at the outset from a lever which is made of resilient material and is pivotably mounted about an axis. Such an adjusting element, as has been shown, requires a precise determination of the end positions and a construction which leads to a flat printhead in the area of the printing abutment, in order to enable a better view of the printing process. In addition, an economical production of the individual parts should be guaranteed, which also includes easy assembly. For the rest, it is known from this solution to arrange the electromagnet with its core axis transversely to the adjusting element, as a result of which the pole ends of the core must be lengthened and supported transversely. This design also requires a transverse structure of the pressure needle housing.
Der eingangs bezeichnete Matrixdruckkopf mit verstellbarer Drucknadelführung ist aus "Patent Abstracts of Japan", Band 5, Nr. 76 vom 20.5.81, bekannt. Hierbei bildet das Verstellorgan quasi den Boden des Drucknadelgehäuses, und der Elektromagnet ist querverlaufend mit dem Spulenkern zum Verstellorgan senkrecht angeordnet. Eine solche Bauweise schützt den Elektromagneten nicht ausreichend. Außerdem ist das Verstellorgan selbst bei Transportmontage des Matrixdruckkopfes nicht ausreichend geschützt.The matrix print head with adjustable print needle guide described at the outset is known from "Patent Abstracts of Japan",
Bei einer ähnlichen Bauweise ("Patent Abstracts of Japan" Band 5, Nr. 101 vom 30.6.81) sitzt der Elektromagnet, dessen Magnetkern ebenfalls senkrecht zum Verstellorgan verläuft, sogar auf dem Druckkopfschlitten und bildet daher einen vom Matrixdruckkopf separaten Bauteil. Hier ist der Elektromagnet noch weniger geschützt und problematisch hinsichtlich der Einstellung des Arbeitsluftspaltes, die von der Unterseite des Schlittens her erfolgen muß.With a similar design ("Patent Abstracts of Japan"
Aus IBM Technical Disclosure Bulletin, Vol. 20, Nr. 12, Mai 1978, ist es bekannt, mit einer von unten in das Innere des Nadeldruckgehäuses eines Matrixdruckkopfes ragenden Elektromagnetspule den gesamten Kopf zu verstellen, so daß es hier an einem Verstellorgan für eine Drucknadelführung (Führungsmundstück) fehlt. Eine solche Lösung bedeutet, den gesamten Kopf um 0,2 mm hin- und herzuverstellen, was wegen der größeren Masse des gesamten Matrixdruckkopfes schon nachteilig ist.From IBM Technical Disclosure Bulletin, Vol. 20, No. 12, May 1978, it is known to adjust the entire head with an electromagnetic coil protruding from below into the interior of the dot-matrix pressure housing of a matrix print head, so that it is here on an adjustment member for a print needle guide (Guide mouthpiece) is missing. Such a solution means moving the entire head back and forth by 0.2 mm, which is disadvantageous because of the larger mass of the entire matrix print head.
Schließlich ist es bekannt (DE-A-25 35 699), ebenfalls den gesamten Kopf zu verschwenken, wobei der Elektromagnet am Druckkopfschlitten befestigt ist und an der Unterseite des Drucknadelgehäuses eine besondere Ankerplatte erfordert. Diese Lösung besitzt ebenfalls die bereits erwähnten Nachteile der größeren zu verschwenkenden Masse und ist daher nicht vorteilhaft.Finally, it is known (DE-A-25 35 699) to also pivot the entire head, the electromagnet being fastened to the print head carriage and requiring a special anchor plate on the underside of the print needle housing. This solution also has the aforementioned disadvantages of the larger mass to be pivoted and is therefore not advantageous.
Wie bereits ausgeführt, stellen ein besonderes Problem die Endlagen des Führungsmundstückes dar, die wegen der angestrebten Druckgenauigkeit für Schönschrift sehr exakt eingehalten werden müssen.As already stated, the end positions of the guide mouthpiece represent a particular problem, which must be adhered to very precisely because of the printing accuracy desired for fine writing.
Der Erfindung liegt deshalb die Aufgabe zugrunde, bei einem gattungsgemäßen Matrixdruckkopf eine genaue Verstellung für das Führungsmundstück bei leicht zu beherrschenden Fertigungstoleranzen, bei flacher Bauweise im Bereich des Führungsmundstückes, bei einfacher Montage und bei ausreichender Justierbarkeit der für die Funktion wichtigen Teile zu schaffen.The invention is therefore based on the object of providing a precise adjustment for the guide mouthpiece with easily manageable manufacturing tolerances, with a flat design in the area of the guide mouthpiece, with simple assembly and with sufficient adjustability of the parts important for the function in a generic matrix print head.
Die gestellte Aufgabe wird dadurch gelöst, daß das Verstellorgan oberhalb der Drucknadeln angeordnet ist daß der Elektromagnet zum Verstellorgan etwa parallel liegt, daß mit dem Magnetkern eine Ankerbrücke verbunden ist, wobei die Ankerbrücke mit dem Verstollorgan den Arbeitsluftspalt bestimmt und daß das aus einem Hebel bestehende Verstellorgan zweiteilig ausgeführt ist und die beiden Hebelteile mittels einer Blattfeder gelenkig für eine Bewegung in vertikaler Ebene verbunden sind. Die Erfindung ermöglicht, eine genaue Verstellung für das Führungsmundstück zu schaffen, die Fertigungstoleranzen der Einzelteile leicht zu beherrschen und trotz des erforderlichen Elektromagneten im Bereich des Führungsmundstückes eine flache Bauweise zu erzielen und ermöglicht ferner eine einfache Montage, wobei eine sichere Einstellung der Endlagen des Verstellorgans ermöglicht wird. Die Erfindung verbessert die Federeigenschaft des bekannten Verstellorgans dahingehend, daß ein Hebelteil an und für sich starr ausgeführt werden kann, wobei die Federwirkung mittels der Blattfeder erzeugt wird. Mit dieser Lösung ist daher eine weitestgehend genaue Bewegung des Verstellorgans möglich, wobei die Schwenkbewegung des Verstellorgans mit einem relativ kleinen Radius ausgeführt wird. Eine solch genaue Verstellbewegung wirkt im Sinne einer weitestgehenden Vertikalverstellung in der Vertikalebene vor dem Druckwiderlager.The object is achieved in that the adjusting element is arranged above the pressure needles, that the electromagnet is approximately parallel to the adjusting element, that an armature bridge is connected to the magnetic core, the armature bridge determining the working air gap with the locking element and that the adjusting element consisting of a lever is designed in two parts and the two lever parts are articulated by means of a leaf spring for movement in the vertical plane. The invention makes it possible to create an accurate adjustment for the guide mouthpiece, to easily master the manufacturing tolerances of the individual parts and to achieve a flat design despite the required electromagnet in the area of the guide mouthpiece, and furthermore enables simple assembly, with a safe adjustment of the end positions of the adjusting member becomes. The invention improves the spring property of the known adjusting element in that a lever part can be rigid in and of itself, the spring action being generated by means of the leaf spring. With this solution, a largely accurate movement of the adjusting member is therefore possible, the pivoting movement of the adjusting member being carried out with a relatively small radius. Such a precise adjustment movement acts in the sense of a largely vertical adjustment in the vertical plane in front of the pressure abutment.
Ferner ist eine ausreichende Justierungsmöglichkeit der für die Funktion wichtigen Teile gegeben.There is also a sufficient possibility of adjustment of the parts important for the function.
Eine praktische Ausführungsform für die Unterbringung der Einzelteile ist dahingehend vorteilhaft, daß der Elektromagnet und die Ankerbrücke über dem Verstellorgan angeordnet sind.A practical embodiment for the accommodation of the individual parts is advantageous in that the electromagnet and the armature bridge are arranged above the adjusting member.
Die Justiermöglichkeit wird ferner dadurch unterstützt, daß die Ankerbrücke verstellbar am Magnetkern des Elektromagneten angeordnet ist. Diese Maßnahme gestattet, während oder nach der Montage und auch während des Betriebes Justierarbeiten am Matrixdruckkopf durchzuführen.The adjustment option is also supported by the fact that the armature bridge is adjustably arranged on the magnetic core of the electromagnet. This measure allows adjustment work to be carried out on the matrix print head during or after assembly and also during operation.
Hierbei ist besonders vorteilhaft, daß für die Verstellung der Ankerbrücke ein von außen am Druckkopfgehäuse betätigbares Einstellmittel vorgesehen ist. Diese Maßnahme fördert die Zugänglichkeit der Einstellmittel durch das Wartungspersonal.It is particularly advantageous that an adjustment means that can be actuated from the outside of the printhead housing is provided for the adjustment of the armature bridge. This measure promotes the accessibility of the setting means by the maintenance personnel.
Die Genauigkeit des erfindungsgemäßen Matrixdruckkopfes wird ferner dadurch gesteigert, daß für eine Endlage des Verstellorgans ein fester Anschlag vorgesehen ist und daß das Verstellorgan in Richtung des Anschlags unter der Kraft einer Feder steht.The accuracy of the matrix print head according to the invention is further increased by the fact that a fixed stop is provided for an end position of the adjusting member and that the adjusting member is under the force of a spring in the direction of the stop.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.
Die einzige Figur der Zeichnung zeigt einen axialen Längsschnitt durch den Matrixdruckkopf.The only figure in the drawing shows an axial longitudinal section through the matrix print head.
Der Matrixdruckkopf mit verstellbarer Drucknadelführung liegt in Schreibstellung dem Druckwiderlager 1 bzw. dem Aufzeichnungsträger 1a bzw. dem Farbband 1b gegenüber, wobei das Druckwiderlager 1 hier als Schreibwalze ausgeführt ist. Die Drucknadelantriebsbaugruppe 2 mit allen zum Abschießen einzelner Drucknadeln 3 erforderlichen Teilen ist nicht in allen Einzelheiten beschrieben, weil in dem separaten Gehäuse 4a des Druckkopfgehäuses 4 für die Funktionen des Druckers übliche Bauteile, wie z.B. Elektromagnetspulen 5, Jochkörper 6, Klappanker 7, Anschlag 8, Drucknadelführung 3a, Rückholfeder 9 und hinteres Drucknadellager 10 enthalten sind, die mit der Erfindung nur mittelbar in Beziehung stehen und die ggf. auch in einer anderen Konfiguration gewählt werden können.The matrix print head with adjustable print needle guide is in the writing position opposite the platen 1 or the recording medium 1a or the
Die Drucknadelverstellbaugruppe 11 mit dem Verstellorgan 12, an den das Führungsmundstück 13 befestigt ist, befindet sich in einem separaten Gehäuse 4b des Druckkopfgehäuses 4, das mit dem Gehäuse 4a des Druckkopfgehäuses 4 unter Einfügung von Abstandsbeilagen 14 zu dem Matrixdruckkopf verbunden ist, der mittels der Fixierstifte 29 auf dem vor dem Aufzeichnungsträger 1a hin- und herbewegten Schlitten (nicht gezeichnet) des Matrixdruckers gelagert ist.The print
Das Verstellorgan 12 besteht aus einem federnden Hebel 15 mit mehreren gebogenen Hebelabschnitten. An dem Hebelabschnitt 15a ist das Führungsmundstück 13 mit einem Rubin für die Drucknadeln 3 befestigt. Ein Hebelabschnitt 15b verläuft nahezu parallel zu den Drucknadeln 3 und ein abgewinkelter Hebelabschnitt 15c ist mittels der Schraube 16 mit dem Gehäuse 4b verbunden, wobei die Schraube 16 den Hebelabschnitt 15c durchdringend gleichzeitig den Magnetkern 17a mit der Wicklung 17b des Elektromagneten 17 festhält. Gegenüberliegend zum Hebelabschnitt 15c ist an dem Magnetkern 17a die Ankerbrücke 18 gelagert, die mit dem Hebelabschnitt 15b den Arbeitsluftspalt 19 bildet.The adjusting
Das Verstellorgan 12 kann grundsätzlich als Hebel 15 aus federnden Werkstoffen bestehen. Der Bewegungsweg des Führungsmundstückes 13 (entsprechend dem Arbeitsluftspalt 19) liegt für die Umstellung von Schnellschrift auf Schönschrift in den Grenzen von 0,01 mm bis 1 mm. Ein mittlerer Bewegungsweg beträgt ca. 0,15 mm.The adjusting
Eine Gelenklagerung stellt die zweiteilige Ausführung des Hebels 15 als Verstellorgan 12 dar, wobei der Hebelabschnitt 15b durch die Teilung einen Spalt 20 bildet, der durch die Blattfeder 21 überbrückt wird, so daß ein spielfreies Gelenk für den Bewegungsweg in der Vertikalebene entsteht. Die Blattfeder 21 ist durch Punktschweißung auf dem einen Hebelteil und mittels Schrauben 22 auf dem anderen Hebelteil des Hebelabschnitts 15b befestigt.An articulated bearing represents the two-part design of the lever 15 as an adjusting
Die Ankerbrücke 18 ist mittels auf dem Gehäuse 4b frei zugänglicher Einstellmittel 23, die eine Gewindeschraube 23a aufweisen, verstellbar, um die Größe des Arbeitsluftspalts 19 zu justieren oder anzupassen.The anchor bridge 18 can be adjusted by means of adjusting
Das Verstellorgan 12 ist zwischen Endlagen, die den erwähnten Bewegungsweg begrenzen, verstellbar. Die untere Endlage wird durch den festen Anschlag 24 gebildet. Eine Feder 25 drückt den Hebel 15 gegen den Anschlag 24. Die obere Endlage wird durch die Ankerbrücke 18 bzw. den Arbeitsluftspalt 19 begrenzt. Der feste Anschlag 24 ist hierbei so ausgeführt, daß das Verstellorgan 12 nicht etwa mit den übrigen Druckdrahtführungen 26, 27 und 28 in Berührung kommt.The adjusting
Claims (5)
- A matrix printer head with an adjustable printer pin guide, where the printer pin adjustment assembly (11), with the printer pin adjustment drive located in the printer head housing (4b), and the guide mouthpiece (13) attached to the resilient adjustment member (12), are arranged between the printing support (1) and the printer pin drive assembly (2), where moreover in the region of the printer pins (3) the adjustment member (12) extends approximately in parallel to the printer pins (3) and a connection exists between a magnetic core (17a) and the adjustment member (12), characterised in that the adjustment member (12) is arranged above the printer pins (3), that the electromagnet (17) extends approximately in parallel to the adjusting member (12), that the magnetic core (17a) is connected to an armature bridge (18), where the armature bridge (18) defines the operating air gap (19) with the adjusting member (12), and that the adjusting member (12) comprising a lever (15) is formed in two parts and that the two parts of the lever are articulated by means of a leaf spring (21) for movement in the vertical plane.
- A matrix printer head as claimed in Claim 1, characterised in that the electromagnet (17) and the armature bridge (18) are arranged above the adjustment member (12).
- A matrix printer head as claimed in Claims 1 and 2, characterised in that the armature bridge (18) is adjustably arranged on the magnetic core (17a) of the electromagnet (17).
- A matrix printer head as claimed in Claims 1 to 3, characterised in that adjustment means (23), externally actuatable on the printer head housing (4b), are provided for the adjustment of the armature bridge (18).
- A matrix printer head as claimed in Claims 1 to 4, characterised in that a fixed stop (24) is provided for an end position of the adjustment member (12) and that the adjustment member (12) is subject to the force of a spring in the direction of the stop (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85730018T ATE74067T1 (en) | 1984-04-03 | 1985-02-06 | MATRIX PRINT HEAD WITH ADJUSTABLE NEEDLE GUIDE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3412854 | 1984-04-03 | ||
| DE19843412854 DE3412854A1 (en) | 1984-02-01 | 1984-04-03 | Matrix print head with adjustable print wire guide |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0163592A2 EP0163592A2 (en) | 1985-12-04 |
| EP0163592A3 EP0163592A3 (en) | 1986-12-03 |
| EP0163592B1 true EP0163592B1 (en) | 1992-03-25 |
Family
ID=6232782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85730018A Expired - Lifetime EP0163592B1 (en) | 1984-04-03 | 1985-02-06 | Matrix print head with adjustable print wire guide |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5071270A (en) |
| EP (1) | EP0163592B1 (en) |
| JP (1) | JPS60217166A (en) |
| AT (1) | ATE74067T1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3041877A1 (en) * | 1980-11-06 | 1982-05-13 | Mannesmann AG, 4000 Düsseldorf | MATRIX PRINTER AND RELATED NEEDLE PRINT HEAD |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535699C3 (en) * | 1975-08-09 | 1978-12-14 | Olympia Werke Ag, 2940 Wilhelmshaven | Method and printer for producing fine-screen characters on a recording medium |
| JPS5644676A (en) * | 1979-09-20 | 1981-04-23 | Canon Inc | Wire matrix printer |
| JPS5627363A (en) * | 1979-08-15 | 1981-03-17 | Canon Inc | Wire dot printing head |
| US4459051A (en) * | 1979-08-15 | 1984-07-10 | Canon Kabushiki Kaisha | Matrix printer |
| JPS5662165A (en) * | 1979-10-29 | 1981-05-27 | Seikosha Co Ltd | Serial dot printer |
| JPS5747675A (en) * | 1980-09-05 | 1982-03-18 | Nippon Telegr & Teleph Corp <Ntt> | Driving of wire dot printer |
| US4640633A (en) * | 1984-03-22 | 1987-02-03 | Dh Technology, Inc. | High-speed wire print head with wire print position shift apparatus |
-
1985
- 1985-02-06 EP EP85730018A patent/EP0163592B1/en not_active Expired - Lifetime
- 1985-02-06 AT AT85730018T patent/ATE74067T1/en not_active IP Right Cessation
- 1985-03-04 JP JP60042530A patent/JPS60217166A/en active Granted
-
1990
- 1990-09-20 US US07/587,177 patent/US5071270A/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3041877A1 (en) * | 1980-11-06 | 1982-05-13 | Mannesmann AG, 4000 Düsseldorf | MATRIX PRINTER AND RELATED NEEDLE PRINT HEAD |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0163592A3 (en) | 1986-12-03 |
| EP0163592A2 (en) | 1985-12-04 |
| JPH0431312B2 (en) | 1992-05-26 |
| JPS60217166A (en) | 1985-10-30 |
| US5071270A (en) | 1991-12-10 |
| ATE74067T1 (en) | 1992-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2430407C3 (en) | Mosaic wire print head | |
| DE2808275A1 (en) | INKJET PRINT HEAD | |
| EP0052066B1 (en) | Matrix printer and wire print head therefor | |
| DE1245627B (en) | Print hammer device | |
| DE3201102A1 (en) | "COLOR RAY RECORDING DEVICE" | |
| DE3412854C2 (en) | ||
| DE3329927C2 (en) | ||
| EP0163592B1 (en) | Matrix print head with adjustable print wire guide | |
| DE3605132A1 (en) | SUPPORT DEVICE FOR SUPPORTING A PROBE HEAD OF A DISKETTE DEVICE | |
| EP0157727B1 (en) | Matrix print head | |
| EP0157725B1 (en) | Matrix print head with an adjustable print wire guide | |
| EP0040883B1 (en) | Matrix printer with magnetic print-head adjustment | |
| EP0096085A1 (en) | Device for pressing down a print head provided with a writing electrode | |
| EP0338176A1 (en) | Wire matrix print head | |
| EP0139190B1 (en) | Method of manufacturing a needle guide for a needle-printing head, and needle guide made by this method | |
| EP0178342B1 (en) | Device for a matrix printer, in particular a matrix line printer | |
| DE2203922A1 (en) | Print hammer drive device | |
| DE3147170C2 (en) | Device for compensating for different thicknesses of a recording medium along a print line | |
| EP0382994B1 (en) | Oscillating frame for the printing elements of a matrix line printer | |
| DE3339134C2 (en) | Electric writer | |
| DE3420450C2 (en) | ||
| DE3051058C2 (en) | ||
| DE3210213A1 (en) | Device for a mosaic printer for adjusting the distance between the printing head and the recording carrier | |
| DE2150402C3 (en) | Mosaic printer | |
| DE4339765A1 (en) | Impact printer print head for printing magnetic bar characters |
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): AT BE CH DE FR GB IT LI NL |
|
| 17P | Request for examination filed |
Effective date: 19851019 |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| RHK1 | Main classification (correction) |
Ipc: B41J 3/02 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
| 17Q | First examination report despatched |
Effective date: 19880314 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
| REF | Corresponds to: |
Ref document number: 74067 Country of ref document: AT Date of ref document: 19920415 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed |
Owner name: GUZZI E RAVIZZA S.R.L. |
|
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 3585701 Country of ref document: DE Date of ref document: 19920430 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19930113 Year of fee payment: 9 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19930120 Year of fee payment: 9 |
|
| 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 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19930206 |
|
| ITTA | It: last paid annual fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19930228 Ref country code: CH Effective date: 19930228 Ref country code: BE Effective date: 19930228 |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19930322 Year of fee payment: 9 |
|
| BERE | Be: lapsed |
Owner name: MANNESMANN A.G. Effective date: 19930228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19930901 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19940206 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19940206 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19941031 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19941101 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |