EP0023270B1 - Punktdrucker mit einem schwenkbaren Druckkopf - Google Patents

Punktdrucker mit einem schwenkbaren Druckkopf Download PDF

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Publication number
EP0023270B1
EP0023270B1 EP80103544A EP80103544A EP0023270B1 EP 0023270 B1 EP0023270 B1 EP 0023270B1 EP 80103544 A EP80103544 A EP 80103544A EP 80103544 A EP80103544 A EP 80103544A EP 0023270 B1 EP0023270 B1 EP 0023270B1
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EP
European Patent Office
Prior art keywords
print head
head
print
dots
opening
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
EP80103544A
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English (en)
French (fr)
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EP0023270A1 (de
Inventor
John Mark Choberka
Donald Karl Rex
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International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0023270A1 publication Critical patent/EP0023270A1/de
Application granted granted Critical
Publication of EP0023270B1 publication Critical patent/EP0023270B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface

Definitions

  • the present invention relates to a printer with a print head by dots with a matrix of threads, and more particularly such a printer comprising a head which can tilt.
  • Wire matrix dot printers are well known in the prior art. They generally include a print head with a matrix of threads mounted in a carriage which allows its lateral movement. The printer furthermore comprises a paper handling device enabling the paper to be fed, either in sheets or in continuous strip, on the platen. The print head moves laterally in front of the paper, either step by step or at constant speed. It has several thin wires, for example eight. One end of each wire is connected to an actuator which can be energized to drive the wire forward. The other ends of the wires are aligned vertically in the vicinity of the plate.
  • the ink ribbon is disposed between the ends of the wires and the paper so that when an actuator is energized, a wire is driven forward and strikes the ribbon against the paper on which a dot is printed.
  • characters can be printed by the wires on the paper in a manner well known to those skilled in the art.
  • a thread matrix dot print head is described for example in patent FR-A-2 253 629 and means controlling it for printing alpha-numeric characters are presented in patent FR-A-2 374 691.
  • the print head In the printer described in the review "IBM Technical Disclosure Bulletin” cited above and which includes a tilting print head used for printing dots between dots previously printed on a vertical line, the print head is mounted at rotation in a cradle and a solenoid is excited to cause its rotation.
  • a stop means is provided to limit the rotation of the head so as to arrange the printing threads in an appropriate manner so that the printing of the dots takes place between the previously printed dots.
  • the second area where the tolerances must be low or zero consists of the stop means.
  • the stop means must therefore be a precision machined part.
  • the repeated movement of the print head against the stop means will cause the periodic replacement of the latter due to its wear and deterioration.
  • the present invention relates to a printer comprising a dot matrix print head, a matrix of threads, this head comprising several print threads which are actuated to print a series of first dots on a recording medium while the head is moving. laterally in front of said medium, and said head can be tilted to print a series of second dots between the first printed dots.
  • This printer comprises a print head comprising several print wires, the center of the print end of each wire being separated from the center of the adjacent wires by a given distance, a carriage being able to move in front of said medium, and carrying the print head, rotation means for pivoting the print head relative to the carriage, a removable finger forming part of the print head and extending beyond this head, this finger being oriented parallel at the axis of rotation of the head, an opening in the carriage for receiving an also removable socket receiving said finger, this socket having an internal dimension, along the path followed by said rotating finger, exceeding the dimension of the finger tangential to said rotation path of a predetermined length depending on the desired tilting so that the head prints the series of first dots when the finger is at the bottom of the opening and the series of second points when the finger is at the top of the opening, and drive means for pivoting the print head relative to the carriage.
  • FIG 1 is a perspective view of a printer 10 having a print head 12 made according to the teachings of the present invention.
  • the printer 10 comprises a ribbon holder 14 which ensures the passage of the ink ribbon in front of the print head 12.
  • the printer 10 comprises a platen 16 disposed on the side of the ribbon opposite to the print head 12.
  • the printer 10 also includes a paper feeding system 18 comprising two drive elements 20 which feed the paper or any other recording medium around the plate 16 and in front of the print head 12 to allow printing. characters on paper.
  • the recording medium can consist of a continuous strip of paper with perforated marginal strips, entrained in the supply system 18 by the elements 20, or consist of sheets of paper introduced behind the plate 16 and driven by pressure rollers when the plate 16 is rotated.
  • the movement of the paper in the feed system 18 is controlled by stepping motors (not shown) which respond to electrical signals.
  • the printing of the characters on the paper is caused by the actuation of one or more threads of the print head 12 in order to cause their movement forward and the striking of the ribbon against the paper which is held firmly by plate 16. Then the wire is deconditioned and returns to its position initial, leaving a dot printed on the paper.
  • the print head 12 moves from the left margin to the right and the wires are actuated so as to cause the printing of adjacent dots which form characters on the paper arranged around the plate 16.
  • the print head 12 comprises eight thin wires arranged in a vertical column on the side of the head 12 closest to the plate 16. One end of the seven upper wires of the vertical column is used for printing the characters while the remaining lower wire is used for the uplift.
  • the opposite ends of the wires are connected to eight individual actuators mounted in a circle.
  • the actuators of the print head 12 are protected by a cover 22.
  • the print head 12 is described in detail in the patents FR-A-2 253 629 and US-A-3 987 883 cited above.
  • the print head 12 is driven from left to right and from right to left along the plate 16 on two rails 26 and 28 by a stepping motor (not shown) connected to a set of pulleys and belts 24.
  • a single line of characters is printed when the print head 12 moves from the left, as seen in Figure 1, to the right. Then, the plate 16 is rotated to advance the paper by a line spacing and the print head 12 is brought back to the left in its position of FIG. 1. During its movement from right to left, a second line of characters is printed on the paper, and the characters are as shown in Figure 2. Since the threads must be physically separated from each other to prevent wear and deterioration, the printed dots are also separated from each other.
  • the horizontal spacing of the points is determined by the speed of the print head 12 when it travels laterally through the plate 16 and by the rate of excitation printing wire actuators.
  • FIGS. 4, 5 and 6 show a print head assembly 12 which comprises the print head itself similar to that presented in the patent FR-A-2 253 629 cited above and which rocks in a cradle 32.
  • Figures 4, 5 and 6 are respectively perspective, top and side views of the print head 30 and its cradle 32.
  • the print head 30 comprises eight actuating devices 36 which can be of the type described in the patent Fr-A-2 253 629 cited above.
  • the actuating devices 36 each control a particular printing wire 38 and are arranged in a circle behind the print head 30.
  • the wires 38 are guided in vertical alignment in the housing 40 of the print head 30 and emerge in a vertical line at the front42 of the head 30.
  • the printed circuit panel 44 is placed between the actuating devices 36 and the housing 40 of the print head 30, and the printed wires of this table connect each of the actuating devices 36 to the connector46.
  • the print head 30 is mounted in the head support or cradle 32 by means of two support elements 48 and 50 and this assembly will be described in more detail later.
  • the head support or cradle 32 comprises an oil reservoir 52, the top of which is extended by an ear 54.
  • the cradle 32 also comprises two pivot axes 56 and 58 fixed in its sides.
  • a finger 60 having a part with a cylindrical section 62 and a part with a "diamond" section 64, the tips of which at the ends of the long diagonal are slanted, is fixed in the cradle 32 by a locking screw 66.
  • diamond-shaped section portion 64 of the finger 60 has a vertical axis parallel to the aligned wires 38 of the head, which is longer than its horizontal axis.
  • FIGS 7, 8, 9 and 10 show how the print head 30 is mounted in the cradle 32 via the support elements 48 and 50 which will now be described.
  • the cradle 32 has four legs, three of which, the legs 68, 70 and 72 are shown in the figures.
  • the legs 68 and 70 are lateral legs located on the left side when facing the direction of actuation of the wires and the leg 72 as well as the one which is not shown and which is similar to the leg 70, are the two straight side legs of the cradle 32.
  • the legs 68 and 72 constitute the two front legs while the leg 70 and the leg not shown, constitute the two rear legs.
  • Each of the legs 68, 70 and 72 has a passage 74.
  • each of the support elements is of cylindrical section with the exception of the support element 50 whose part 76 crossing the passage 74 of the leg 68 has a diamond-shaped section, its long vertical axis being parallel to the line of the wires 38.
  • the part 76 with diamond-shaped section aims to minimize alignment problems during the manufacture of the cradle 32.
  • the support elements 48 and 50 can be arranged in the passages made in the front legs 68 and 72 with a relatively large clearance compared to what it would be in the case of a part 76 which would be cylindrical.
  • the lateral play of the print head 12 is not as critical as the vertical play since the head 12 only rotates at a very small angle corresponding to half the center to center distance separating the adjacent printed dots.
  • Each of the support elements 48 and 50 has a conical front end 78 which is housed in a corresponding conical recess of an element 80.
  • the element 80 is made integral with the housing 40 by an arm 82.
  • the part of the support elements 48 and 50 between the passages 74 of the side legs such as the legs 68 and 70 of Figures 8 to 10, comprises a stop 84 and a spring 86 which is disposed between the rear legs, such as the leg 70, and the stop 84.
  • the stop 84 is placed on the support elements 48 and 50 so that, when the print head 30 is mounted in the cradle 32, it is applied against the front legs 68 and 72 by the spring 86.
  • the rear end of the support elements 48 and 50 has a cylindrical section 88 of reduced diameter compared to that of the main part, and integral with the latter.
  • the rear end of the support elements 48 and 50 is introduced into a togemeni:, fitted in the rear receiver block 90 connected to the circuit board 44 which is itself connected to the housing 40.
  • An insulator 92 is provided at the bottom of the housing of the receiver block 90 to isolate the printed circuit panel 44 from the support elements 48 and 50. These are introduced into the receiver block 90 by pressing the spring 94.
  • the length of the support elements 48 and 50 is less than the distance separating on the one hand the bottom of the conical housing of the element 80 and, on the other hand, the rear part of the block 90, so that the spring 94, when it is placed between the insulator 92 and the the rear end 96 of the main part of the elements 48 and 50 exerts a force against the housing 40, which keeps the conical end 78 in the conical housing 80.
  • Each of the support elements 48 and 50 further comprises a hole 98 machined in its center so that said hole is disposed in the passage 74 of the rear legs of the cradle 32, for example in the leg 70, when the support elements 48 and 50 abut and rest on the conical housing 80 and that the spring 86 is extended to the maximum.
  • the hole 98 can be exposed by moving the print head 30 and the support elements 48 and 50 rearward relative to the cradle 32, which compresses the spring 86. This operation can be carried out quickly using the handle 97 .
  • the first step consists pushing back the print head 30 and the support elements 48 and 50 while maintaining the cradle 32 in the position of FIG. 9, which compresses the spring 86 and exposes the hole 98. Then a pin 100 is introduced into the hole 98.
  • the housing 40 and the support elements 48 and 50 are then driven forward by the force exerted by the spring 86 and brought into a position such that the pin 100 bears against the rear legs 70 of the cradle 32. Then, as seen in Figure 10, the housing 40 is pushed forward while the support elements 48 and 50 are held in a fixed position by the pin 100 which bears against the rear legs 70; this forward movement is sufficiently large to cause the withdrawal of the conical end 78 of the support elements of the conical housings 80. This position is shown in solid lines in FIG. 10. During this movement, the spring 94 is compressed and the rear end 88 of the support elements 48 and 50 moves towards the insulator 92 situated in the rear receiver block 90.
  • the complete housing is moved downwards, as indicated by arrow 102, so that the housing conical 80 is in position 80A.
  • the spring 94 returns to its normal state, thus driving the housing in the direction indicated by the arrow 104, which causes the conical housing 80 to pass into the position 80B.
  • the support elements 48 and 50 have been released from the rear receiver unit 90 which is now in position 90B and the print head 32 can be removed by lifting the rear side of the housing 40 and releasing it. of the cradle 32 while removing the front side 82 from under the support elements 48 and 50.
  • Figure 4 shows the carriage 34.
  • the print head 30 and the cradle 32 assembled by the support elements 48 and 50 as described above, are pivotally mounted in the carriage 34.
  • the front side of the carriage 34 has a slide 106 mounted on the rail or shaft 28.
  • the slide 106 includes the bearing 108 and a support 110 for a second bearing (not shown) disposed under the carriage 34.
  • a third bearing similar to the bearing 108 is also provided on the side of the hidden slide 106 by the shaft 28.
  • the other side of the carriage 34 also has the same bearings.
  • the carriage 34 also includes a second slide 112 mounted on the shaft 26 in a well known manner.
  • the right side of the carriage 34 comprises the ribbon drive mechanism 114 which comprises a hub 116 to be introduced into the ribbon holder 14.
  • the ribbon (not shown) is driven from the ribbon holder 14, around the front side 42 of the print head 30 and brought to the rear of the magazine 14 in a manner well known in the prior art.
  • the carriage 34 comprises a set of reception of pivot axes 118 on both sides of the print head 30. In order to simplify the figure, only one of these two reception sets 118 has been shown, it being understood that a similar element is provided on the other side of the print head 30.
  • Figure 6 shows the rotational mounting of the cradle 32 on the carriage 34.
  • the pivoting assembly that is to say that the cradle 32 pivots autor axes 56 and 58.
  • L the pivot axis receiving assembly 118 of the carriage 34 is crossed by two passages 152 and 154.
  • the pivot axis receiver 156 is introduced into the passage 152 and comprises a head 158 of large dimension and the base of which comprises a cutout 160.
  • the configuration of the cutout 160 is such that it can receive the head of the screw 162 which is introduced into the passage 154.
  • the other side of the pivot axis receiver 156 has a V-groove 164.
  • the V-groove 164 and the cutout 160 of the head 158 are aligned so that, when the head of the screw 162 is housed in the cutout, the V-groove 164 is in a position allowing it to receive the pivot axis 58 from cradle 32.
  • the pivot holder 166 is fixed to the receiving assembly 118 by the screw 162 and has a horizontal U-shaped groove 168 oriented perpendicular to the view in FIG. 6.
  • the diameter of the circular part of the U-shaped groove 168 is slightly greater than the diameter of the pivot axis 58 so that the latter can be housed in said U-shaped groove.
  • a bore 170 is provided for receiving the spring 172 and it is aligned with the pivot axis receiver 156 when the holder -pivot 166 is fixed by the screw 162.
  • the spring 172 is compressed when the pivot holder 166 is fixed by the screw 162 so that it applies a force against the pivot axis 58 and keeps it in the V-groove
  • an identical structure comprising the assembly for receiving pivot axes 118, the pivot receiver 156, the screw 162 and the pivot holder 166, is provided on the opposite side of the carriage 34 to receive the pivot pin 56 instead of e of the axis 58. Mounted in this way, the cradle 32 can pivot around the axes 56 and 58.
  • the carriage 34 also includes a distance control device 120 disposed on its left side as seen in Figure 4.
  • the plate 122 is fixed to the control device 120 and constitutes an extension thereof.
  • the height of the control device 120 and of the plate 122 is chosen so that the top of the plate 122 is disposed under the ear 54 of the cradle 32.
  • a solenoid 124 is fixed under the plate 122 by the screws 130 and 132 and the piston 126 of the solenoid 124 passes through a passage 128 formed in the plate 122.
  • a locking screw 134 is fixed in the ear 54 in alignment with the point where the piston 126 comes into contact with the plate 154. The locking screw 134 is adjusted so as to be in light contact with the piston 126 when the solenoid 124 is not excited.
  • the plate 122 is fixed to the device 120 by the screw 136.
  • the plate 122 has a vertical hole 138 and the device 120 a horizontal hole 140 aligned to receive the finger 60 of the cradle 32.
  • the hole 140 receives a socket 142 fixed by a locking screw 144 disposed in the vertical hole 138.
  • the length of the socket 142 and that of the diamond-shaped section portion 64 of the finger 60 are approximately equal so that the portion 64 of the finger 60 is movable in the socket 142.
  • the internal diameter of the sleeve 142 is slightly greater than the longest diameter of the part 64 of the finger 60.
  • the finger 60 also has a flat part 146 aligned with a bore 148 formed in the device 120 (see Figure 7).
  • the spring 150 is housed in the bore 148 and kept compressed against the flat part 146 by the plate 122. In this way the finger is kept in the normal low position as seen in FIG. 7.
  • the angle of rotation of the cradle 32 on the carriage 34 is controlled by the movement of the diamond-shaped section 64 of the finger 60 in the socket 142 and this is shown in Figures 7, 11 and 12.
  • the spring 150 applies a force against the flat part 146 of finger 60 causing the application of the lower part of part 64 of finger 60 against the inner lower part of the sleeve 142 as shown in FIGS. 7 and 11.
  • the force applied against the ear 54 is greater than that applied by the spring 150 against the finger 60.
  • the ear 54 therefore moves upwards and carries with it the whole cradle 32, including the finger 60.
  • the difference between the internal diameter of the sleeve 142 and the long axis of the part 64 of the finger 60, can be chosen to control the movement of the printing wires 38 over a distance corresponding to half the center to center distance separating the wires or, in other words, to half the center to center distance separating the dots prints.
  • This difference between the internal diameter of the sleeve 142 and the long vertical axis of the diamond-shaped section 64 of the finger 60 can be easily determined by rendering the ratio existing between the distance separating the axis of rotation from the axes 56 and 58, on the front side 42 and the distance separating this axis of rotation of the finger 60, equal to the ratio existing between on the one hand the desired movement of the wires 38 and on the other hand the difference between the internal diameter of the sleeve 142 and the axis vertical along the diamond section 64 of finger 60.
  • Figure 13 shows schematically the control circuit of the printer 10 which can be used with a processor 174 delivering signals to control the logic 176 in order to cause the printing of a line of characters.
  • the control logic 176 stores the characters to be printed and delivers the control signals from the tilting solenoid 124 to control the lateral movement of the print head 12, the feeding of the paper by the paper feeding system 18 and the triggering of the eight actuation devices for the printing wires 36.
  • This control system with the exception of the control of the tilting solenoid 124, is described in detail in patent FR-A-2 374 691.
  • the control of the tilt solenoid requires the conditioning of a rocker at the end or to the right of the movement from left to right of the print head and the maintenance of this conditioning throughout the movement from right to left of said print head.
  • the output of the flip-flop can be coupled, by appropriate excitation circuits, to the control solenoid 124.

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  • Common Mechanisms (AREA)
  • Impact Printers (AREA)

Claims (7)

1.Drucker
mit einem eine Drahtpunktmatrix aufweisenden Punktdruckkopf, wobei der Punktdruckkopf eine Vielzahl das Abdrucken einer Serie von ersten Punkten auf einem Aufzeichnungsmedium bewirkenden Punktdrähten enthält, während sich der Punktdruckkopf längs über dem Aufzeichnungsmedium bewegt, und wobei der Punktdruckkopf zum Abdrucken einer Serie von zweiten Punkten zwischen den ersten abgedruckten Punkten verschwenkt werden kann, mit einem eine Vielzahl von Druckdrähten aufweisenden Punktdruckkopf (30, 32) wobei das Zentrum des Abdruckendes jedes Drahtes einen bestimmten Abstand vom Zentrum der benachbarten Punktdrähte hat,
mit einem Schlitten (34), der sich über dem Aufzeichnungsmedium bewegen kann, und der den Punktdruckkopf trägt und
mit Schwenkmitteln (56, 58) für das Verschwenken des Punktdruckkopfes hinsichtlich des Schlittens, dadurch gekennzeichnet,
daß ein versetzbarer Finger (60) vorgesehen ist, der zu dem Punktdruckkopf gehört, und der sich über den Punktdruckkopf hinaus erstreckt, wobei der Finger parallel zu der Schwenkachse des Druckkopfes angeordnet ist,
daß eine Öffnung (140) in dem Schlitten vorgesehen ist, die für eine auch versetzbare, den Finger unterbringende Hülse vorgesehen ist, deren Innendurchmesser entlang der von dem sich drehenden Finger betroffenen Strecke um eine vorbestimmte Länge die Tangentialabmessungen des Fingers hinsichtlich der Strecke der Drehbewegung in Abhängigkeit von der erwünschten Kippbewegung so überschreitet, daß der Punktdruckkopf die Serie der ersten Punkte abdruckt, wenn sich der Finger (60) hinsichtlich der Öffnung unten befindet, und die Serie der zweiten Punkte abdruckt, wenn sich der Finger hinsichtlich der Öffnung oben befindet, und
daß Antriebsmittel vorgesehen sind, die den Punktdruckkopf hinsichtlich des Schlittens verschwenken lassen.
2. Drucker nach Anspruch 1, dadurch gekennzeichnet, daß die Serie der ersten Punkte abgedruckt wird, wenn sich der Punktdruckkopf in eine Richtung entlang des Aufzeichnungsmediums bewegt, und die Serie der zweiten Punkte abgedruckt wird, wenn sich der Punktdruckkopf in der entgegengesetzten Richtung bewegt.
3. Drucker nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Antriebsmittel ein Solenoid (124) aufweisen, das bei Erregung den Punktdruckkopf in eine Richtung verschwenken läßt, und daß die Antriebsmittel ein flexibles Element (150) aufweisen, das den Punktdruckkopf in der entgegengesetzten Richtung verschwenken läßt, wenn das Solenoid nicht erregt ist.
4. Drucker nach Anspruch 3, dadurch gekennzeichnet, daß der Schlitten eine zusätzliche zweite senkrecht in die erste Öffnung (140) mündende Öffnung (148) aufweist, in der das flexible Element (150) untergebracht ist, das unter Federdruck gehalten wird, um einen Druck gegen den Finger auszuüben, wobei die von dem flexiblen Element gegen den Finger (60) ausgeübte Kraft kleiner als die von dem erregten Solenoid gegen den Punktdruckkopf ausgeübte Kraft ist.
5. Drucker nach Anspruch 4, dadurch gekennzeichnet, daß die Antriebsmittel außerdem ein an dem Schlitten befestigtes Halteelement (122) aufweisen, das zum Befestigen des Solenoids (124) und zum Halten des in der zweiten Öffnung unter Federdruck gehaltenen flexiblen Elements dient.
6. Drucker nach Anspruch 5, dadurch gekennzeichnet,
daß der Punktdruckkopf ein Verlängerungsstück aufweist, das sich über das Halteelement (122) erstreckt,
und daß das Solenoid (124) einen beweglichen Kolben aufweist, der durch das Halteelement verläuft, und bei Erregung des Solenoids eine Kraft gegen das Verlängerungsstück ausübt.
7. Drucker nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die in der Hülse (142) angeordnete Öffnung kreisförmig ist, und der Finger (60) einen rautenförmigen Querschnitt hat, dessen größte Diagonale tangential zu der Strecke des drehenden Fingers verläuft.
EP80103544A 1979-07-30 1980-06-24 Punktdrucker mit einem schwenkbaren Druckkopf Expired EP0023270B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/062,259 US4284363A (en) 1979-07-30 1979-07-30 Data matrix print head
US62259 1979-07-30

Publications (2)

Publication Number Publication Date
EP0023270A1 EP0023270A1 (de) 1981-02-04
EP0023270B1 true EP0023270B1 (de) 1984-02-01

Family

ID=22041287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103544A Expired EP0023270B1 (de) 1979-07-30 1980-06-24 Punktdrucker mit einem schwenkbaren Druckkopf

Country Status (9)

Country Link
US (1) US4284363A (de)
EP (1) EP0023270B1 (de)
JP (1) JPS6042035B2 (de)
AU (1) AU530222B2 (de)
BR (1) BR8004719A (de)
CA (1) CA1126574A (de)
DE (1) DE3066377D1 (de)
ES (1) ES8104076A1 (de)
IT (1) IT1149807B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738165A (en) * 1980-08-18 1982-03-02 Seiko Epson Corp Serial dot printer
JPS6222376Y2 (de) * 1980-09-25 1987-06-06
US4755068A (en) * 1987-01-30 1988-07-05 Dh Technology, Inc. Dot matrix print head assembly
ATE72545T1 (de) * 1987-11-06 1992-02-15 Mannesmann Ag Matrixnadeldrucker mit verstellbarer drucknadelfuehrung.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2108006C3 (de) * 1971-02-19 1974-12-12 Walther-Bueromaschinen Gmbh, 7921 Gerstetten Mosaik-Drahtdruckkopf
GB1386530A (en) * 1972-06-23 1975-03-05 Kienzle Apparate Gmbh Wire printer
US3882985A (en) * 1973-07-23 1975-05-13 Ncr Co Tiltable matrix print head to permit viewing of the characters
US4010835A (en) * 1975-08-01 1977-03-08 International Business Machines Corporation Matrix print head
DE2535699C3 (de) * 1975-08-09 1978-12-14 Olympia Werke Ag, 2940 Wilhelmshaven Verfahren und Drucker zur Herstellung von feingerasterten Schriftzeichen auf einem Aufzeichnungsträger
US4086997A (en) * 1977-03-07 1978-05-02 Wang Laboratories, Inc. Adjustable support for print head assembly

Also Published As

Publication number Publication date
AU530222B2 (en) 1983-07-07
EP0023270A1 (de) 1981-02-04
JPS5621872A (en) 1981-02-28
ES493791A0 (es) 1981-04-16
US4284363A (en) 1981-08-18
JPS6042035B2 (ja) 1985-09-19
BR8004719A (pt) 1981-02-10
IT1149807B (it) 1986-12-10
DE3066377D1 (en) 1984-03-08
AU5908480A (en) 1981-02-05
CA1126574A (en) 1982-06-29
ES8104076A1 (es) 1981-04-16
IT8022712A0 (it) 1980-06-11

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