EP0157727A2 - Matrix print head - Google Patents
Matrix print head Download PDFInfo
- Publication number
- EP0157727A2 EP0157727A2 EP85730036A EP85730036A EP0157727A2 EP 0157727 A2 EP0157727 A2 EP 0157727A2 EP 85730036 A EP85730036 A EP 85730036A EP 85730036 A EP85730036 A EP 85730036A EP 0157727 A2 EP0157727 A2 EP 0157727A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- print head
- base plate
- magnetic
- printing
- hinged
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- 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
- B41J2/27—Actuators for print wires
- B41J2/275—Actuators for print wires of clapper type
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/377—Cooling or ventilating arrangements
Definitions
- the invention relates to a matrix printhead with printing needles which can be driven for printing by punctiform formation of characters on a recording medium by means of an electromagnetic solenoid associated with each printing needle with an anchor for printing, the printing needles being mounted and guided in a part of the front and the anchors in the rear part Part of the housing and wherein the electromagnetic coils are combined to form a magnetic block on a base plate and the base plate is connected to the housing.
- Matrix print heads of this type produce, in matrix printers, back and forth movements in front of the parallel printing abutment (platen roller) via an ink ribbon on the recording medium, printing points which result in alphanumeric characters when the recording medium is fed continuously or step by step.
- the frequency when the individual printing needles are fired is of crucial importance for the printing speed.
- the structure of the print needle drive assembly is of essential importance.
- Matrix printheads with printing needles are known, the construction of which is relatively complicated, so that manufacturing inaccuracies occur in several places, which, when added up, represent considerable storage errors for printing needles, magnet armatures and other moving parts. For this reason, such matrix print heads operate relatively imprecisely and are subject to great wear, which is also determined in part by heating, so that the service life of such matrix print heads is limited.
- the invention is therefore based on the object of proposing a matrix printhead for matrix printers which initially allows economic tolerances in terms of the accuracy of the manufacture of the individual parts or the individual assemblies, which also has functional stability, ie a long service life, and which is ultimately economical is mountable.
- the stated object is achieved according to the invention in the matrix print head described at the outset in that the base plate of the magnetic block together with the magnetic yokes consists of a one-piece coil holder which receives the electromagnetic coils and that the coil holder is connected to a core bushing which has a stop disk for the magnet armature and which is connected to one Heatsink is further developed with cooling fins.
- This invention has the advantages of economical production with economical manufacturing tolerance, furthermore the advantage of a reduced assembly time and the matrix print head according to the invention achieves a stability during operation which could not previously be achieved, so that a long service life is achieved.
- the stability of the magnetic block and the low-wear power transmission from the electromagnetic coils to the pressure wires is achieved according to further features of the invention in that the base plate of the magnetic block has a base-forming ring to which the magnet yokes are integrally formed and made of the same material in the investment casting process or in the sintering process are.
- the cost-effectiveness of manufacturing an assembly previously composed of several individual parts with appropriate dimensional accuracy, corresponding tolerance quality and corresponding durability is further achieved in that the one-piece coil carrier consists of an iron-silicon alloy.
- a separate invention which however can also be used in connection with the previous invention, is a matrix print head with damping stop means for the backward movement of the magnet armature. It is advantageous here that a stop disk covers an end face of the core bushing which is made of plastic and is heat-insulating.
- the print head guide assembly 1 of the matrix print head is opposite the print abutment 2, which consists of the platen roller 2a.
- the record carrier 3, usually a paper web 3a, is transported through the platen roller 2a.
- the ribbon 4 is also located in front of the recording medium 3.
- the print needle guide assembly 1 has a housing 5 a as part of the print head housing 5.
- the housing 5a there are guides 6 and 7 for the printing needles 8.
- the column of the printing needles 8, i.e. several, e.g. five to twelve, superimposed printing needles 8 are also guided in the guide mouthpiece 9 very close to the pressure abutment 2.
- the guide mouthpiece 9 is also fastened to the guide carrier 10 and adjustable in two height positions by means of the stop 11, the spring 12, the electromagnet 13 and the adjustable working air gap 14.
- the height adjustment is not part of the present invention.
- the pressure needles 8 can therefore also be guided in a height-adjustable manner in the guide mouthpiece 9.
- the pressure needle drive assembly 15 has a connection housing 5b which is kept at a distance from the housing 5a by means of shims 16 which allows the position of the pressure needles 8 on the guide mouthpiece 9 to be readjusted or readjusted at any time during the life of the matrix print head.
- the pressure needles 8 are supported in a rear pressure needle bearing 17 and their needle head 8a abuts against a bearing surface 17a via the compression spring 8b.
- a magnet armature 13 which bears against the needle head 8a, is also supported on a conventional plastic ring 19 and can be actuated by means of the electromagnet 20.
- the electromagnetic coils 21 and the magnetic yokes 22a and 22b with further features are combined to form a magnetic block 23 and shown separately in FIG. 2 '. 2, the magnetic block 23 is drawn without the winding 21.
- the magnet block 23 has a base plate 24, which forms a ring 24a, on which the magnet yokes 22a and 22b are integrally formed, so that the base plate 24 (ring 24a) together with the magnet yokes 22a and 22b form a one-piece coil carrier 25 .
- the base plate 24 is connected to a core bushing 27 by a press connection 26.
- the core bushing 27 forms a transition to a receiving collar 27b through ribs 27 1 .
- the core bushing 27 is machined on the end face 28 or on the face 29, if machining has not already become unnecessary due to the manufacturing process (investment casting process, sintering process). A precise distance 30 arises during machining, the tolerance quality being simple and economical to maintain.
- the stop disc 31 which consists of a tough and wear-resistant plastic or the like.
- the core bushing 27 is simultaneously configured to form a heat sink 32 with cooling fins 33.
- the stop disc 31 forms a centering projection 31a, a stop surface 31b, which is of course at a tolerance distance from the surface 29.
- the stop disk 31 also forms a recess 31c between two ribs 27a, through which connecting cables 34a and 34b run to the electromagnetic coils 21 (FIG. 3).
- FIG. 1 Another design of a stop disk 35, which, however, fulfills the same functions and properties of the stop disk 31, is shown in FIG. 1, the only modification being the laying of the recesses 31c: there are other recesses 36 through the ring 24a and through the receiving collar 27b intended. However, both the recess 31c and the recess 36 lie within the largest diameter of the matrix print head.
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- Impact Printers (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Magnetic Heads (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Description
Die Erfindung betrifft einen Matrixdruckkopf mit Drucknadeln, die zur punktweisen Bildung von Schriftzeichen auf einem Aufzeichnungsträger wahlweise mittels einer jeder Drucknadel zugeordneten Elektranagnetspule mit Anker zum Druck antreibbar sind, wobei die Drucknadeln in einem vorJeren Teil des Genäuses gelagert und geführt sind und die Anker in dem hinteren Teil des Gehäuses und wobei die Elektromagnetspulen zu einem Magnetblock auf einer Grundplatte zusammengefaßt und die Grundplatte mit dem Gehäuse verbunden ist.The invention relates to a matrix printhead with printing needles which can be driven for printing by punctiform formation of characters on a recording medium by means of an electromagnetic solenoid associated with each printing needle with an anchor for printing, the printing needles being mounted and guided in a part of the front and the anchors in the rear part Part of the housing and wherein the electromagnetic coils are combined to form a magnetic block on a base plate and the base plate is connected to the housing.
Derartige Matrixdruckköpfe erzeugen in Matrixdruckern durch hin- und hergehende Bewegungen vor dem parallel angeordneten Druckwiderlager (Schreibwalze) über ein Farbband auf dem Aufzeichnungsträger Druckpunkte, die bei kontinuierlichen bzw. schrittweisem Vorschub des Aufzeichnungsträgers alphanumerische Zeichen ergeben. Neben der Geschwindigkeit für die Hin- und Herbewegung des Matrixdruckkopfes ist die Frequenz beim Abschießen der einzelnen Drucknadeln von entscheidender Bedeutung für die Druckgeschwindigkeit. Für die Druckpräzision und für die Lebensdauer des Matrixdruckkopfes ist der Aufbau der Drucknadelantriebsbaugruppe von wesentlicher Bedeutung.Matrix print heads of this type produce, in matrix printers, back and forth movements in front of the parallel printing abutment (platen roller) via an ink ribbon on the recording medium, printing points which result in alphanumeric characters when the recording medium is fed continuously or step by step. In addition to the speed for the back and forth movement of the matrix print head, the frequency when the individual printing needles are fired is of crucial importance for the printing speed. For the printing precision and for the life of the matrix print head, the structure of the print needle drive assembly is of essential importance.
Es sind Matrixdruckköpfe mit Drucknadeln bekannt, deren Aufbau verhältnismäßig kompliziert ist, so daß an mehreren Stellen Fertigungsungenauigkeiten auftreten, die summiert beträchtliche Lagerungsfehler für Drucknadeln, Magnetanker und andere bewegliche Teile darstellen. Aus diesem Grund arbeiten derartige Matrixdruckköpfe verhältnismäßig ungenau und unterliegen einem großen Verschleiß, der teilweise auch durch Erwärmung bestimmt wird, so daß die Lebensdauer derartiger Matrixdruckköpfe beschränkt ist. Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Matrixdruckkopf für Matrixdrucker vorzuschlagen, der zunächst bei der Genauigkeit der Herstellung der einzelnen Teile bzw. der einzelnen Baugruppen grundsätzlich wirtschaftliche Toleranzen erlaubt, der ferner eine funktionelle Stabilität aufweist, d.h. eine hohe Lebensdauer, und der letztlich wirtschaftlich montierfähig ist.Matrix printheads with printing needles are known, the construction of which is relatively complicated, so that manufacturing inaccuracies occur in several places, which, when added up, represent considerable storage errors for printing needles, magnet armatures and other moving parts. For this reason, such matrix print heads operate relatively imprecisely and are subject to great wear, which is also determined in part by heating, so that the service life of such matrix print heads is limited. The invention is therefore based on the object of proposing a matrix printhead for matrix printers which initially allows economic tolerances in terms of the accuracy of the manufacture of the individual parts or the individual assemblies, which also has functional stability, ie a long service life, and which is ultimately economical is mountable.
Die gestellte Aufgabe wird bei dem eingang bezeichneten Matrixdruckkopf erfindungsgemäß dadurch gelöst, daß die Grundplatte des Magnetblocks zusammen mit den Magnetjochen aus einem einstückigen, die Elektromagnetspulen aufnehmenden Spulenträger besteht und daß der Spulenträger mit einer eine Anschlagscheibe für die Magnetanker aufweisenden Kernbuchse verbunden ist, die zu einem Kühlkörper mit Kühlrippen weitergebildet ist. Diese Erfindung weist die Vorteile einer wirtschaftlichen Herstellung bei wirtschaftlicher Herstelltoleranz auf, ferner den Vorteil einer verminderten Montagezeit und der Matrixdruckkopf nach der Erfindung erreicht eine Stabilität während des Betriebes, die bislang nicht erreicht werden konnte, so daß eine hohe Lebensdauer erzielt wird.The stated object is achieved according to the invention in the matrix print head described at the outset in that the base plate of the magnetic block together with the magnetic yokes consists of a one-piece coil holder which receives the electromagnetic coils and that the coil holder is connected to a core bushing which has a stop disk for the magnet armature and which is connected to one Heatsink is further developed with cooling fins. This invention has the advantages of economical production with economical manufacturing tolerance, furthermore the advantage of a reduced assembly time and the matrix print head according to the invention achieves a stability during operation which could not previously be achieved, so that a long service life is achieved.
Die Stabilität des Magnetblocks und die verschleißarme Kraftübertragung von den Elektromagnetspulen auf die Druckdrähte wird nach weiteren Merkmalen der Erfindung dadurch erzielt, daß die Grundplatte des Magnetblocks einen eine Basis bildenden Ring aufweist, an den die Magnetjoche einstückig und aus demselben Werkstoff im Feingießverfahren oder im Sinterverfahren angeformt sind.The stability of the magnetic block and the low-wear power transmission from the electromagnetic coils to the pressure wires is achieved according to further features of the invention in that the base plate of the magnetic block has a base-forming ring to which the magnet yokes are integrally formed and made of the same material in the investment casting process or in the sintering process are.
Die Wirtschaftlichkeit der Herstellung einer früher aus mehreren Einzelteilen zusammengesetzten Baugruppe bei entsprechender Maßhaltigkeit, entsprechender Toleranzgüte und entsprechender Beständigkeit wird weiterhin dadurch erreicht, daß der einstückige Spulenträger aus einer Eisen-Siliziuin-Legierung besteht.The cost-effectiveness of manufacturing an assembly previously composed of several individual parts with appropriate dimensional accuracy, corresponding tolerance quality and corresponding durability is further achieved in that the one-piece coil carrier consists of an iron-silicon alloy.
Der Vorteil eines stabilen Aufbaus bei Verringerung der zu beachtenden Herstellungstoleranzen wird außerdem dadurch begünstigt, daß der einstückige Spulenträger mit der Kernbuchse vernietet ist. Es handelt sich praktisch um nur zwei wesentliche Arbeitsgange, die zur Herstellung eines für die Montage der Elektromagnetspulen vorbereiteten Spulenträgers erforderlich sind.The advantage of a stable construction while reducing the manufacturing tolerances to be observed is further enhanced by the fact that the one-piece coil carrier is riveted to the core bushing. It is practically only two essential work steps that are required to produce a coil holder prepared for the assembly of the electromagnetic coils.
Eine selbständige Erfindung, die jedoch auch in Verbindung mit der vorangegangenen Erfindung genutzt werden kann, stellt ein Matrixdruckkopf mit dämpfenden Anschlagsmitteln für die Rückwärtsbewegung der Magnetanker dar. Hierbei ist vorteilhaft, daß eine Anschlagscheibe eine dem aus Kunststoff hergestellten Druckkopfgehäuse gegenüberliegende Stirnfläche der Kernbuchse wärmeisolierend bedeckt.A separate invention, which however can also be used in connection with the previous invention, is a matrix print head with damping stop means for the backward movement of the magnet armature. It is advantageous here that a stop disk covers an end face of the core bushing which is made of plastic and is heat-insulating.
Dieser Gedanke wird nunmehr dahingehend weiterentwickelt, daß die wärmeisolierende und die 3ewegungen eines Magnetankers dämpfende Anschlagscheibe mit Ausnehmungen für die Anschlußkabel zu den Elektromagnetspulen versehen ist. Dieser zusätzliche Vorschlag weist den Vorteil auf, daß der Matrixdruckkopf gegen Wänneentwicklungen der Elektromagnetspulen, die zu einem bestimmten Teil nicht zu vermeiden sind, geschützt wird.This idea is now being further developed in such a way that the heat-insulating and the 3 movements of a magnet armature damping stop disc is provided with recesses for the connecting cable to the electromagnetic coils. This additional proposal has the advantage that the matrix print head is protected against the development of the temperature of the electromagnetic coils, some of which cannot be avoided.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawing and are described in more detail below.
Es zeigen:
- Fig. 1 einen axialen Querschnitt durch den in Betriebsstellung befindlichen Matrixdruckkopf (ohne den Bewegungsschlitten des Matrixdruckers),
- Fig. 2 einen Querschnitt (II - II gemäß Fig. 3) durch die getrennt dargestellte Baugruppe aus Spulenträger mit Kernbuchse und Anschlagscheibe und
- Fig. 3 eine Draufsicht zu Fig. 2.
- 1 shows an axial cross section through the matrix print head in the operating position (without the movement carriage of the matrix printer),
- Fig. 2 shows a cross section (II - II of FIG. 3) through the separately shown assembly of coil carrier with core bushing and stop disk and
- 3 is a top view of FIG. 2.
Der Matrixdruckkopf liegt mit seiner Drucknadelführungsbaugruppe 1 dem Druckwiderlager 2 gegenüber, das aus der Schreibwalze 2a besteht. Der Aufzeichnungsträger 3, üblicherweise eine Papierbahn 3a, wird durch die Schreibwalze 2a transportiert. Vor dem Aufzeichnungsträger 3 befindet sich außerdem das Farbband 4.The print head guide assembly 1 of the matrix print head is opposite the
Die Drucknadelführungsbaugruppe 1 weist ein Gehäuse 5a als Teil des Druckkopfgehäuses 5 auf. Im Gehäuse 5a sind Führungen 6 und 7 für die Drucknadeln 8. Die Spalte der Drucknadeln 8, d.h. mehrere, wie z.B. fünf bis zwölf, übereinanderliegende Drucknadeln 8 sind außerdem in dem Führungsmundstück 9 sehr nahe an dem Druckwiderlager 2 geführt. Das Führungsmundstück 9 ist außerdem an dem Führungsträger 10 befestigt und mittels des Anschlags 11, der Feder 12, des Elektromagneten 13 und des einstellbaren Arbeitsluftspalts 14 in zwei Höhenstellungen einstellbar. Die Höheneinstellung ist jedoch nicht Teil der vorliegenden Erfindung. Die Drucknadeln 8 können daher im Führungsmundstück 9 auch höhenunverstellbar geführt sein.The print needle guide assembly 1 has a
Die Drucknadelantriebsbaugruppe 15 weist ein Anschlußgehäuse 5b auf, das mittels Beilagen 16 vom Gehäuse 5a auf einen Abstand gehalten wird, der es erlaubt, die Stellung der Drucknadeln 8 am Führungsmundstück 9 grundsätzlich und zu einem beliebigen Zeitpunkt während der Lebenszeit des Matrixdruckkopfes nachzustellen oder neu einzustellen. Die Drucknadeln 8 lagern in einem hinteren Drucknadellager 17 und liegen mit ihrem Nadelkopf 8a über die Druckfeder 8b jeweils gegen eine Lagerfläche 17a an.The pressure
Außerdem ist in dem Ausführungsbeispiel (Fig. 1) ein Magnetanker 13 vorgesehen, der an dem Nadelkopf 8a anliegt, sich außerdem an einem üblichen Kunststoffring 19 abstützt und mittels des Elektromagneten 20 betätigbar ist. Die Elektromagnetspulen 21 und die Magnetjoche 22a bzw. 22b mit weiteren Merkmalen sind zu einem Magnetblock 23 zusammengefaßt und in Fig. 2'getrennt dargestellt. In Fig. 2 ist der Magnetblock 23 ohne die Wicklung 21 gezeichnet. Der Magnetblock 23 besitzt eine Grundplatte 24, die einen Ring 24a bildet, an dem die Magnetjoche 22a bzw. 22b aus einem Stück angeformt sind, so daß die Grundplatte 24 (Ring 24a) zusammen mit den Magnetjochen 22a bzw. 22b einen einstückigen Spulenträger 25 bilden. Hierbei ist die Grundplatte 24 durch eine Preßverbindung 26 mit einer Kernbuchse 27 verbunden. Die Kernbuchse 27 bildet durch Rippen 271 einen Übergang zu einem Aufnahmekranz 27b. Die Kernbuchse 27 wird nach Verbindung mit dem Spulenträger 25 auf der Stirnfläche 28 bzw. auf der Fläche 29 bearbeitet, falls nicht bereits schon durch den Herstellvorgang (Feingießverfahren, Sinterverfahren) eine Bearbeitung unnötig geworden sein sollte. Bei der Bearbeitung entsteht ein genauer Abstand 30, wobei die Toleranzgüte einfach und wirtschaftlich eingehalten werden kann. Auf der Kernbuchse 27 befindet sich die Anschlagscheibe 31, die aus einem zähen und verschleißfesten Kunststoff oder dgl. besteht. Die Kernbuchse 27 ist gleichzeitig zu einem Kühlkörper 32 mit Kühlrippen 33 ausgestaltet. Die Anschlagscheibe 31 bildet einen Zentrieransatz 31a, eine Anschlagfläche 31b, die selbstverständlich im Toleranzabstand zur Fläche 29 steht. Die Anschlagscheibe 31 bildet ferner zwischen zwei Rippen 27a jeweils eine Ausnehmung 31c, durch die Anschlußkabel 34a bzw. 34b zu den Elektromagnetspulen 21 verlaufen (Fig. 3).In addition, in the exemplary embodiment (FIG. 1), a
Eine andere Gestaltungsform einer Anschlagscheibe 35, die jedoch dieselben Funktionen und Eigenschaften der Anschlagscheibe 31 erfüllt, ist in Fig. 1 dargestellt, wobei die einzige Abänderung die Verlegung der Ausnehmungen 31c darstellt: Es sind andere Ausnehmungen 36 durch den Ring 24a und durch den Aufnahmekranz 27b vorgesehen. Sowohl die Ausnehmung 31c als auch die Ausnehmung 36 liegen jedoch innerhalb des größten Durchmessers des Matrixdruckkopfes.Another design of a
In der Kernbuchse 27 bzw. der Anschlagscheibe 31 sind Durchgangslöcher 37 (Fig. 2 und 3) für Befestigungsschrauben 38 (Fig. 1) vorgesehen. Die Befestigungsschrauben 38 verbinden den Magnetblock 23 mit dem Anschlußgehäuse 5b.Through holes 37 (FIGS. 2 and 3) for fastening screws 38 (FIG. 1) are provided in the core bushing 27 or the
Claims (6)
dadurch gekennzeichnet,
daß die Grundplatte (24) des Magnetblocks (23) zusammen mit den Magnetjochen (22a bzw. 22b) aus einem einstückigen, die Elektromagnetspulen (21) aufnehmenden Spulenträger (25) besteht und daß der Spulenträger (25) mit einer eine Anschlagscheibe (31) für die Magnetanker (18) aufweisenden Kernbuchse (27) verbunden ist, die zu einem Kühlkörper (32) mit Kühlrippen (33) weitergebildet ist.1.Matrix printhead with printing needles which can be driven for printing punctiform characters on a recording medium by means of an electromagnet coil with armature assigned to each printing needle, the printing needles being mounted and guided in a front part of the housing and the anchors in the rear part of the Housing and wherein the electromagnetic coils are combined to form a magnetic block on a base plate and the base plate is connected to the housing,
characterized,
that the base plate (24) of the magnetic block (23) together with the magnet yokes (22a or 22b) consists of a one-piece coil holder (25) receiving the electromagnetic coils (21) and that the coil holder (25) has a stop disk (31) for the magnetic armature (18) having a core bushing (27), which is developed into a heat sink (32) with cooling fins (33).
dadurch gekennzeichnet,
daß die Grundplatte (24) des Magnetblocks (23) einen eine Basis bildenden Ring (24a) aufweist, an den die Magnetjoche (22a,22b) einstückig und aus demselben Werkstoff im Feingießverfahren oder im Sinterverfahren angeformt sind.2. matrix print head according to claim 1,
characterized,
that the base plate (24) of the magnetic block (23) has a ring (24a) forming a base, to which the magnetic yokes (22a, 22b) are integrally formed and made of the same material in the investment casting process or in the sintering process.
dadurch gekennzeichnet,
daß der einstückige Spulenträger (25) aus einer Eisen-Silizium-Legierung besteht.3. matrix print head according to claims 1 and 2,
characterized,
that the one-piece coil carrier (25) consists of an iron-silicon alloy.
dadurch gekennzeichnet,
daß der einstückige Spulenträger (25) mit der Kernbuchse (27) vernietet ist.4. matrix print head according to claims 1 to 3,
characterized,
that the one-piece coil carrier (25) is riveted to the core bushing (27).
dadurch gekennzeichnet,
daß eine Anschlagscheibe (31) eine dem aus Kunststoff hergestellten Druckkopfgehäuse (5) gegenüberliegende Stirnfläche (28) der Kernbuchse (27) wänmeisolierend bedeckt.5. matrix print head, with damping stop means for the backward movement of the magnetic armature, in particular according to one or more of claims 1 to 4,
characterized,
that a stop disc (31) covers an end face (28) of the core bushing (27) opposite the printhead housing (5) made of plastic, in a heat-insulating manner.
daß die wärmeisolierende und die Bewegungen eines Magnetankers (18) dämpfende Anschlagscheibe (31) mit Ausnehmungen (31c) für die Anschlußkabel (34a bzw. 34b) zu den Elektromagnetspulen (21) versehen ist.6. matrix printhead according to one or more of claims 1 to 5, characterized in that
that the heat-insulating and the movements of a magnet armature (18) damping stop disc (31) is provided with recesses (31c) for the connecting cables (34a and 34b) to the electromagnetic coils (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT85730036T ATE56182T1 (en) | 1984-04-03 | 1985-03-05 | MATRIX PRINT HEAD. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3412855 | 1984-04-03 | ||
| DE19843412855 DE3412855A1 (en) | 1984-04-03 | 1984-04-03 | MATRIX PRINT HEAD |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0157727A2 true EP0157727A2 (en) | 1985-10-09 |
| EP0157727A3 EP0157727A3 (en) | 1986-12-30 |
| EP0157727B1 EP0157727B1 (en) | 1990-09-05 |
Family
ID=6232783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85730036A Expired - Lifetime EP0157727B1 (en) | 1984-04-03 | 1985-03-05 | Matrix print head |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0157727B1 (en) |
| JP (1) | JPS60225764A (en) |
| AT (1) | ATE56182T1 (en) |
| DE (2) | DE3412855A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090099C (en) * | 1997-04-18 | 2002-09-04 | 潘尼尼股份公司 | Print head |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3540761A1 (en) * | 1985-11-16 | 1987-05-21 | Mannesmann Ag | MATRIX PRINT HEAD |
| DE3889662D1 (en) * | 1988-12-01 | 1994-06-23 | Mannesmann Ag | Folding anchor type matrix needle printhead. |
| US5163759A (en) * | 1990-10-10 | 1992-11-17 | Brady Usa, Inc. | Signmaking machine using character forming tool for overlapping impacts and web scoring |
| CN102744975B (en) * | 2011-04-22 | 2014-12-03 | 多美科信息科技（深圳）有限公司 | Printing head |
| CN104553346A (en) * | 2013-10-21 | 2015-04-29 | 大连中盈科技有限公司 | Needle printer printing head capable of continuously printing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2000084A (en) * | 1977-06-23 | 1979-01-04 | Hebert D | Matrix print head assembly |
| GB2075427A (en) * | 1978-03-17 | 1981-11-18 | Donald G Hebert | Wire matrix print head assembly |
| EP0053887A1 (en) * | 1980-12-05 | 1982-06-16 | Tokyo Electric Co. Ltd. | Printing head of dot printer |
| EP0067542A1 (en) * | 1981-06-04 | 1982-12-22 | Tokyo Electric Co. Ltd. | Printing head of dot printer |
| JPS58177373A (en) * | 1982-04-12 | 1983-10-18 | Hitachi Ltd | Printing head |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2800218C2 (en) * | 1978-01-04 | 1980-02-07 | Triumph Werke Nuernberg Ag, 8500 Nuernberg | Dot matrix print head |
| JPS5734979A (en) * | 1980-08-11 | 1982-02-25 | Brother Ind Ltd | Type head for dot printer |
| JPS6212613Y2 (en) * | 1980-08-11 | 1987-04-01 | ||
| JPS5818373U (en) * | 1981-07-24 | 1983-02-04 | 日本電気株式会社 | electronic equipment equipment |
| JPS58117935U (en) * | 1982-02-05 | 1983-08-11 | 東芝テック株式会社 | dot printer print head |
| JPS58145737U (en) * | 1982-03-26 | 1983-09-30 | 東芝テック株式会社 | dot printer print head |
| DE3243475A1 (en) * | 1982-11-22 | 1984-05-24 | Mannesmann AG, 4000 Düsseldorf | NEEDLE PRINT HEAD FOR MATRIX PRINTER |
-
1984
- 1984-04-03 DE DE19843412855 patent/DE3412855A1/en active Granted
-
1985
- 1985-03-05 EP EP85730036A patent/EP0157727B1/en not_active Expired - Lifetime
- 1985-03-05 DE DE8585730036T patent/DE3579487D1/en not_active Expired - Fee Related
- 1985-03-05 AT AT85730036T patent/ATE56182T1/en active
- 1985-04-01 JP JP60068902A patent/JPS60225764A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2000084A (en) * | 1977-06-23 | 1979-01-04 | Hebert D | Matrix print head assembly |
| GB2075427A (en) * | 1978-03-17 | 1981-11-18 | Donald G Hebert | Wire matrix print head assembly |
| EP0053887A1 (en) * | 1980-12-05 | 1982-06-16 | Tokyo Electric Co. Ltd. | Printing head of dot printer |
| EP0067542A1 (en) * | 1981-06-04 | 1982-12-22 | Tokyo Electric Co. Ltd. | Printing head of dot printer |
| JPS58177373A (en) * | 1982-04-12 | 1983-10-18 | Hitachi Ltd | Printing head |
Non-Patent Citations (1)
| Title |
|---|
| PATENTS ABSTRACTS OF JAPAN, Band 8, Nr.16 (M-270)[1453], 24. Januar 1984; & JP-A- 58 177 373 (HITACHI SEISAKUSHO K.K.) 18.10.1983 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090099C (en) * | 1997-04-18 | 2002-09-04 | 潘尼尼股份公司 | Print head |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0157727B1 (en) | 1990-09-05 |
| DE3412855C2 (en) | 1991-06-13 |
| EP0157727A3 (en) | 1986-12-30 |
| JPH0481513B2 (en) | 1992-12-24 |
| DE3412855A1 (en) | 1985-10-03 |
| ATE56182T1 (en) | 1990-09-15 |
| JPS60225764A (en) | 1985-11-11 |
| DE3579487D1 (en) | 1990-10-11 |
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