EP0108159A1 - Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion - Google Patents

Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion Download PDF

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Publication number
EP0108159A1
EP0108159A1 EP82110213A EP82110213A EP0108159A1 EP 0108159 A1 EP0108159 A1 EP 0108159A1 EP 82110213 A EP82110213 A EP 82110213A EP 82110213 A EP82110213 A EP 82110213A EP 0108159 A1 EP0108159 A1 EP 0108159A1
Authority
EP
European Patent Office
Prior art keywords
yokes
movement
arrangement according
electromagnet unit
ring
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.)
Withdrawn
Application number
EP82110213A
Other languages
German (de)
English (en)
Inventor
Armin Dipl.-Phys. Bohg
Horst Dietrich Dipl.-Ing. Matthaei
Kurt Hartmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBM Deutschland GmbH
International Business Machines Corp
Original Assignee
IBM Deutschland GmbH
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 IBM Deutschland GmbH, International Business Machines Corp filed Critical IBM Deutschland GmbH
Priority to EP82110213A priority Critical patent/EP0108159A1/fr
Priority to JP58188585A priority patent/JPS6041446B2/ja
Priority to US06/545,562 priority patent/US4517538A/en
Publication of EP0108159A1 publication Critical patent/EP0108159A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/14—Pivoting armatures
    • H01F7/145—Rotary electromagnets with variable gap
    • 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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/02—Hammers; Arrangements thereof
    • B41J9/127—Mounting of hammers
    • 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
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/38—Electromagnetic means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/123—Guiding or setting position of armatures, e.g. retaining armatures in their end position by ancillary coil

Definitions

  • the invention relates to an electromagnetic rotary drive with pitching movement, which can be used in particular with impact printers.
  • the basic physical mode of operation of this novel drive is based on a principle as described in the European application 80 103 387.9 (GE 9-80-014E).
  • This application relates to a fast, electromagnetically actuated plunger drive, which can be used in particular for impact printers.
  • the electromagnet basically consists of essentially symmetrically constructed magnetizable yoke halves with a corresponding excitation coil (s). Ochhbeckn the facing pole ends of the J forming each aligned magnetic A r-beitsspalte.
  • a plunger which is displaceable in the direction of the alignment line of the working gaps is arranged between the magnetic working gaps.
  • the cross section of the ram is adapted to the area of the working column. It can be cylindrical or cuboid.
  • B disc-shaped or cuboid anchor elements made of magnetizable material and spacing elements arranged between them made of predominantly non-magnetizable material.
  • the anchor elements have such a geometric design that their volume is in the order of the working gap volume.
  • the armature elements are essentially in front of the working gaps when the electromagnets are not excited. They are used in excitation of the E lektro- magnet in this work column pulled out and doing an acceleration.
  • the plunger moves in a straight line.
  • either only one of the yoke halves can be provided with a coil; however, it is also possible to provide both halves of the yoke with one coil each. If several pairs of yoke halves are assigned to one tappet, the number of required coils increases accordingly.
  • the electromagnetic rotary drive with pitching movement according to the invention can be used in a particularly advantageous manner for impact printers.
  • F ig. 1 shows a perspective, fragmentary, basic illustration of a disk ring 1 with an anchor web 1-10 / 20 which is drawn into a magnetic working gap 2-1 lying between two (magnet) yokes 10, 11.
  • the arrangement consists of an upper outer ring 3 and a lower outer ring 4. Die Outer rings 3 and 4 are fixed and apart from one another to form a gap 2.
  • a disc ring 1 which is freely movable in the direction of the arrow is arranged in this gap. The movement of the disk ring takes place in the ring plane around the axis of rotation of the disk ring, not shown. This movement is caused by the interaction of the magnetic field in the magnetic working gap 2-1 and the magnetizable armature bridge.
  • the magnetic working gap lies between the pole ends of two opposing magnet yokes 10 and 11.
  • One magnet yoke 10 is arranged in the upper outer ring 3, the lower yoke 11 in the lower outer ring 4.
  • the magnet yokes are electromagnetically excited by a cylinder coil, not shown in FIG. 1, enclosing the axis of rotation of the disk ring.
  • the outer rings 3 and 4 are structured such that the magnetic yokes are arranged in a radial alignment between magnetically non-conductive outer ring segments.
  • the outer ring segments adjacent to the magnetic yoke 10 in the upper outer ring 3 are identified by 15 and 16; the outer ring segments adjacent to the magnetic yoke 11 in the lower outer ring with 17 and 18.
  • the disk ring 1 consists of a radially oriented anchor web 1-10 / 20, which has approximately the dimensions of the magnetic working gap 2-1 lying between the pole ends of the yokes 10 and 11 . To the left and right of this anchor web there are sections of predominantly non-magnetizable material. Upon energization of the yokes 10 and 11 and the associated construction of a magnetic working gap between its pole ends of the armature web 1-10 / 20 in this magnetic rbeitsspalt A drawn 2-1 and thereby accelerated. This movement is, as will be described in more detail later, to produce a pitching movement, as z. B. also in stop pressure to generate a Imprint can be used, exploited. In the illustration shown in FIG.
  • the individual anchor bars are ideally separated from one another by non-magnetizable disk ring segments.
  • Fig. 2 is a schematic fragmentary exploded view to form the disc ring 1 from two halves 1-1 and 1-2 is shown.
  • Such a part of the half consists of a part 1-10 or 1-20 to form the actual anchor web 1-10 / 20 and a thin continuous disc ring plate of the same material as the anchor web.
  • Disk ring plate and anchor web part 1-10 or 1-20 form, for example, a common partial half 1-1 or 1-2 produced by etching.
  • Both part halves 1-1, 1-2 are welded together as shown in Fig. 2 to form the disc ring 1. It has been found that the operation of the arrangement is substantially not influenced by the fact that the A nkerstegmaschine interconnecting disk ring sheets are also made of magnetizable material. These sheets are much thinner than the actual anchor bridge.
  • a disc ring 1 manufactured in this way has the advantage of a surface free of abutting edges, since it is not necessary to grind the surface which is decisive for the movement of the disc ring between the pole ends of the magnetic yokes in order to eliminate uneven abutting edges.
  • FIG. 3 is a schematic perspective view of the electromagnet unit with an upper and lower outer ring and with an upper and lower inner ring, each with radially extending slots for receiving magnetic yokes, which are excited by a common coil.
  • FIG. 3 The detail marked with A in FIG. 3 is shown in a correspondingly modified form in FIG. 1.
  • the outer ring segments 15, 16, 17 and 18 reappear in identical form in FIGS. 3 and 1.
  • the disk ring 1 is missing in FIG. 3.
  • the magnet yokes 10 and 11 are not shown in the detail A of FIG. 3.
  • such magnetic yokes appear elsewhere in FIG. 3.
  • the electromagnet unit consists of an upper 6 and a lower 7 inner ring and an upper 3 and lower outer ring 4.
  • the inner and outer rings have radially outwardly directed slots.
  • the slots of the upper and lower inner ring are marked with 8; the slots of the upper and lower outer ring with 5.
  • the inner rings 6 and 7 are not magnetized by a in Fig. 3, but in Fig. 10 shown cash spacer 67 spaced apart.
  • the inner rings are higher than the outer rings assigned to them. At their free ends, the inner rings have a bore 9 for receiving a guide pin (24, 25 in FIG. 4).
  • the upper and lower outer rings 3 and 4 are spaced apart from one another to form a gap 2 (in which the disk ring 1 runs).
  • the upper part of the slots in the upper inner ring or the lower part of the slots in the lower inner ring and the slots of the outer rings serve to accommodate U-shaped magnet yokes 10, 11.
  • the magnetic circuit which includes yokes 10 and 11, must not contain any other (air) gap apart from the desired working gap 2-1.
  • the slots 5 of the outer rings take up one leg of the U-shaped magnet yokes almost completely, while the slots of the inner rings receive the other leg of the magnet yokes.
  • the inner and outer rings are spaced apart sufficiently to accommodate a solenoid 13 in the space 12 they form. For reasons of simplification, the two connection terminals for this coil are not shown.
  • the magnetic yokes that connect the upper inner ring 6 and the upper outer ring 3 to each other are with the Reference numerals 10; the magnetic yokes connecting 11 to the lower inner ring 7 and the lower outer ring 4.
  • a sleeve 14 is arranged between the coil 13 and the inside of the upper and lower outer ring. It also serves as a spacer for magnet yokes 10 and 11.
  • the arrangement shown in Fig. 3 is easy to assemble by putting the sleeve 14 and the coil 13 on an upper part 3/6/10 and then adding the lower part 7/4/11 accordingly.
  • the slots of the inner and outer rings are aligned. They are evenly spaced from each other on the inner and outer rings.
  • the magnetic yokes are made of magnetizable material, preferably soft iron.
  • magnetic working gaps 2-1 FIG. 1
  • the inner rings 6 and 7 are made of magnetizable material; the upper and lower outer rings are made of non-magnetizable material, preferably brass.
  • FIG. 10 shows a sectional view according to the sectional plane BB in FIG. 3.
  • This sectional view serves to further clarify the assembly of the electromagnet unit and to better illustrate a yoke circle with a working gap.
  • the working gap 2-1 is formed between the pole ends of the U-shaped magnet yokes 10 and 11.
  • the legs of these magnetic yokes each run in slots in the outer and inner rings 6, 7.
  • the upper and lower T eiltechnik 3/6/10 4/7/11 subunit Fig.
  • the sleeve 14 also serves as a spacer for the magnet yokes 10 and 11.
  • the narrower legs of the U-shaped magnet yokes, which run in the slots of the upper or lower inner ring, are fixed in their position by a sleeve 68 or 69 pressed onto the upper 6 or lower 7 inner ring.
  • These sleeves 68 and-69 have not been shown in FIG. 3 for the sake of simplicity.
  • the upper bore in the inner ring 6 for receiving the pin 24 is identified by the reference number 9.
  • the coil lying between the sleeve 14 and the inner sleeves 68 and 69 is again identified by 13.
  • the magnetizable spacer 67 and the upper 6 and lower 7 inner ring are made of soft magnetic material. For a balanced fluxdensity the sum of the areas corresponding to all A rbeitsspalte 2-1 in about the area of the Abstandsstükkes 67.
  • the disk ring 1 (not shown in FIG. 3) runs in the gap 2 between the upper 3 and lower outer ring (FIG. 3) in a manner as can be seen from FIG. 1.
  • a plurality of A nkerstegen 1-10 / 20 are provided; each Such an armature 1-10 / 20 is assigned to the magnetic working gap 2-1.
  • This movement is used to generate a drive (pitch) movement, preferably for impact printers. It can be seen from the representations in FIGS.
  • FIG. 4 a schematic perspective illustration of the disk ring (running between the upper and lower outer ring) is shown in FIG. 4, which is connected on the outside to a strut-cheek arrangement which serves to accommodate the electromagnet unit.
  • the armature disk ring 1 which is located in the gap 2 of the electromagnet unit (FIG. 3) when the electromagnet is excited, performs a one-time rotary step movement, as already mentioned in connection with FIG. 1.
  • 4 shows the constructive measures with which this rotary step movement of the freely movable armature disk ring 1 can be transformed into a pitching movement.
  • a pitching movement can be used, for example, in stop printers for generating a stop movement for printing a character.
  • the armature disk ring located (F ig. 3) in the gap 2 of the electromagnet unit is guided upward by the underside of the upper outer ring 3 and at the bottom by the upper surface of the lower outer ring 4.
  • the armature disk ring 1 has, as shown in FIG. 4, three outer disk ring eyelets 1-3-1 and 1-3-2 (the third is not shown) for receiving a strut 19, 20, 21.
  • the disk ring eyelets and the struts connected to them extend outside the electromagnet unit shown in FIG. 3.
  • the struts 19, 20, 21, each parallel and evenly arranged on the circumference of the armature disk ring, run parallel to the imaginary axis of the inner and outer rings.
  • the ends of the struts 19, 20, 21 are each with a cheek 22, 23, a star-shaped part with three legs, firmly connected.
  • the legs of the front cheek 23 in FIG. 4 are identified by 23-1, 23-2, 23-3 and the legs of the rear cheek 22 by 22-1, 22-2 and 22-3.
  • the legs 23-2 and 22-2 are extended.
  • a striking beam 26 is fastened between the ends of these elongated legs. As will be explained in more detail later, this striking bar 26 is used to carry out the pitching movement which results from a rotating step movement of the armature disk ring 1.
  • In the middle part of the cheeks 22 and 23 inwardly directed receiving pins 24 and 25 are arranged, which are aligned with each other. These receiving pins serve to receive the electromagnet unit, as shown in Fig. 3.
  • the pin 25 serves to receive the bore 9 of the electromagnet unit, while the pin 24 serves to receive the corresponding bore in the lower inner ring 7 which cannot be seen in FIG. 3.
  • the electromagnet unit (FIG. 3) and the strut-cheek arrangement according to FIG. 4 are shown separately. However, it can easily be seen how the disk ring 1 (FIG. 4) arranged in the gap 2 of the electromagnet unit is connected to the strut-cheek arrangement which lies outside and virtually surrounds the electromagnet unit.
  • the strut-cheek arrangement (FIG. 4) must follow its movement and execute a rotating step movement about the axis running through the receiving pins 24 and 25.
  • This rotary step movement is followed by the striking bar 26 between the elongated legs 23-2, 22-2 of the cheeks 23 and 22 and thereby makes a pitching movement.
  • the prerequisite is, of course, that the electromagnet unit occupies a fixed position so that a defined sequence of movements of the strut-cheek arrangement can occur.
  • the electromagnet unit After assembly of the electromagnet unit, which also takes into account the positioning of the armature disk ring 1 with the struts 19, 2 0 , 21 in the gap 2, the struts 19, 20, 21 with the cheeks 22, 23 can be added in subsequent operations 26 are firmly connected.
  • FIG. 5 shows the schematic side view of a receiving prism 33 for receiving the electromagnet unit (FIG. 3) and the strut-cheek arrangement (FIG. 4) for executing a pitching movement. It can be assumed that the electromagnet unit (FIG. 3) has already been assembled with the strut-cheek arrangement (FIG. 4). 5 shows the manner in which these two units assembled with one another interact with the receiving prism in order to carry out a pitching movement.
  • the moving part is the strut-cheek arrangement, the fixed part is the electromagnet unit.
  • the electromagnet unit is connected to the prism at three points, which fix its position.
  • the receiving prism consists essentially of two legs 33-2 and 33-1, which can be compared approximately in their mutual position with the legs of an obliquely written L's.
  • the electromagnet The unit is pressed at two points 27 and 28 against one leg 33-2 provided with a corresponding recess 35.
  • the electromagnet unit has in the outer region of an outer ring segment a recess 29 for receiving an adjusting pin 30 which is attached to the upper end of a holding plate 31 which is connected by means of a connecting element 32, e.g. B. a screw is connected to the lower leg 33-1 of the receiving prism 33. In this way, the position of the electromagnet unit is fixed at three points.
  • the strut-cheek arrangement has elements for limiting the movement path in order to execute a pitching movement in the direction of arrow P.
  • the starting position is defined by a stop pin 34a with a piece of material 36 which dampens the movement at its upper end.
  • the stop pin 34a is attached to the upper end of the leg 33-2 of the receiving prism 33.
  • Its damping stop element 36 acts on the striker bar 26, which is arranged at the outer end between the legs 23-2 and 22-2 (FIG. 4).
  • the striking bar 26 rests on the stop 36; when a pitching movement is carried out in the direction of arrow P, the striking bar moves away from this stop 36.
  • the W ay of the pitching motion is limited by a return element 34b.
  • This reset element 34b is arranged in the recess 35 of the receiving prism; it can be, for example, a spring which is resilient in the double arrow direction and acts on the strut 21, which is arranged between the legs 23-3 and 22-3 of the cheeks 23 and 22 (FIG. 4).
  • the strut 21 is moved upward against the force of the restoring element to a point from which the restoring element counteracts the strut-cheek arrangement against the direction of the arrow P into the starting position pushes back.
  • the starting position is defined by the stop element 36 for the striking bar 26.
  • FIG. 6 shows a schematic, perspective, partial illustration of the use of the pitching movement for impact printers.
  • the cheek-strut arrangement executes a unique rotary step movement about its axis running through the receiving pins 24, 25.
  • the striking bar 26 running between the ends of the elongated legs 23-2 and 22-2 moves in the direction of the arrow P; after the pitching movement has been carried out, the strut-cheek arrangement is reset by the restoring element 34b. 6, this pitching movement can be used for impact printers.
  • a circulating in the direction of arrow D D jerk element band used 35th This pressure element band has a recess 36 into which a resilient tongue 35-1 of the same material as the band projects against the direction of movement of the band.
  • a pressure element 35-3 On one side of this tongue, a pressure element 35-3 is arranged to produce a punctiform impression; on the other side an element 35-2 receiving the pressure stop.
  • the striking bar 26 strikes this element 35-2, the pressure element 35-3 then moves in the extended direction from P to produce an impression.
  • This movement is particularly suited to the resilient property of the tongue 35-1, which can be easily deflected in the pressure direction.
  • FIGS. 3, 4 and 5 shown embodiment refers to an arrangement in which the drive rotary step movement of the disc ring is transmitted to a strut-cheek arrangement connected to its periphery
  • FIGS. 3, 4 and 5 shown embodiment refers to an arrangement in which the drive rotary step movement of the disc ring is transmitted to a strut-cheek arrangement connected to its periphery
  • FIG. 7 versions are also conceivable (Fig. 7) in which the anchor webs in one the drive-rotating step executing disc 45 are arranged, which is fixedly connected to an axis of rotation 46.
  • this disk 45 carries magnetizable anchor webs 51 to 56, which are arranged on two tracks aligned concentrically about the axis 46 and which are aligned with one another in a radial alignment.
  • These anchor webs 51 to 56 are assigned to magnetic working gaps of an electromagnet unit.
  • This electromagnet unit is used by a large number of shaped magnet yoke pairs formed.
  • a pair of magnetic yokes is formed by the U-shaped magnetic yokes 37 and 38 or 64 and 65.
  • the pole ends of such a pair of U-shaped magnetic yokes face each other to form magnetic working gaps, the base of the magnetic yokes being oriented radially.
  • All of the magnetic yokes are each embedded in an annular holder 49 and 50 which runs concentrically to the axis 46, the holder parts 49 and 50 being joined together in such a way that a gap 66 remains in their interior for receiving the disk 45.
  • the parts of the bracket 49 and 50 near the axis are each provided with a bearing 47, 48 for the axis 46.
  • the axis is freely movable in this bearing, while the bracket is firmly connected to the electromagnet unit.
  • the excitation coil of the solenoid unit is made in two parts as a ring coil, the upper annular coil 43 extends in the opening of the U-shaped upper magnetic yokes and a corresponding concentric recess in the holder 49.
  • the lower R ingspule extends in the opening of the lower yokes (eg 38 and 65) and a corresponding concentric recess in the holder 50.
  • the reason for the two-part design of the coil is that the disc 45 extends between the coil parts.
  • the legs of the U-shaped magnetic yoke 37 are identified by 37-1 and 37-2, the legs of the U- shaped magnetic yoke 38 by 38-1 and 38-2. Both M a-gnetjoche are located in such a way with respect to that between its pole ends, respectively a working gap 39 and 4 0 is formed.
  • the working gap 40 is assigned an armature web on the inner concentric track of the disk 45 (see FIG. 8), the outer magnetic working gap 39 is an armature web on the outer concentric Track of the disk 45. Similar considerations apply to the mutually opposed U-shaped magnet yokes 64 and 65 on the right side of the illustration in FIG. 7.
  • the legs of the magnet yoke 64 are identified by 64-1 and 64-2; that of the magnetic yoke 64 with 65-1 or 65-2.
  • the legs 64-1 and 65-1 face each other to form a magnetic working gap 41, the legs 64-2 and 65-2 to form a magnetic working gap 42.
  • the working gap 41 is again assigned an armature web of the inner concentric track according to FIG. 8, the work gap 42 is an armature web of the outer concentric track of the disk 45. It is understandable that the inner and outer magnetic working gap of a pair of U- shaped opposing magnetic yokes only such A nkerstege on the inner and outer track of the disc 45 can be assigned, which are aligned in radial alignment.
  • the mode of operation of the arrangement shown in FIG. 7 does not require any special explanation, taking into account the mode of operation for the arrangement shown in FIGS. 3, 4 and 5.
  • the armature disk 45 rotates and causes the shaft 46, which is firmly connected to it, to execute a drive rotation step.
  • Tion of the armature disk to the presentation of technical details of the definition of the starting position of the armature disk and a reset element for R ückt- after execution of a drive D rehuzees in its initial position is omitted for simplicity.
  • the limitation and resetting of the rotary movement is expediently via the Axis.
  • Corresponding stops and restoring elements are not essential to the invention, they are familiar to every person skilled in the art and are therefore not described in more detail.
  • FIG. 7 can be modified so that the inner legs of the magnet yoke pairs close to the axis can also be made continuously. In such a case, only one track with anchor webs 58, 60, 62 need be provided on the disk 57 according to FIG. 9. At the locations of the continuous legs (assuming that the legs 37-1 and 38-1 of the magnet yoke pair 37 and 38 would be connected to one another), sufficiently large recesses (59, 61, 63) must be provided on an inner concentric track of the disk 57. These cutouts not only have to be large enough to allow these interconnected legs to pass through the circular disk, they also have to allow the drive disk to move freely in a rotating step and offer a corresponding mounting option.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Impact Printers (AREA)
EP82110213A 1982-11-05 1982-11-05 Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion Withdrawn EP0108159A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82110213A EP0108159A1 (fr) 1982-11-05 1982-11-05 Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion
JP58188585A JPS6041446B2 (ja) 1982-11-05 1983-10-11 電磁アクチユエ−タ
US06/545,562 US4517538A (en) 1982-11-05 1983-10-26 Electromagnetic rotary actuator with rocking movement, in particular for impact printers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82110213A EP0108159A1 (fr) 1982-11-05 1982-11-05 Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion

Publications (1)

Publication Number Publication Date
EP0108159A1 true EP0108159A1 (fr) 1984-05-16

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Application Number Title Priority Date Filing Date
EP82110213A Withdrawn EP0108159A1 (fr) 1982-11-05 1982-11-05 Entraînement électromagnétique à mouvement de balancier, en particulier pour imprimantes à percussion

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Country Link
US (1) US4517538A (fr)
EP (1) EP0108159A1 (fr)
JP (1) JPS6041446B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179929A1 (fr) * 1984-10-04 1986-05-07 Ibm Deutschland Gmbh Elément d'actionnement électromagnétique à balancier en particulier pour imprimante à impact

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3220966B2 (ja) * 1994-08-30 2001-10-22 株式会社村田製作所 非放射性誘電体線路部品
US5911807A (en) * 1996-09-27 1999-06-15 Markem Corporation Apparatus for cutting a continuously flowing material web
US6344904B1 (en) 1998-10-03 2002-02-05 John E. Mercer Arrangement for reading from and/or writing to flexible sheet media in a curved configuration and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539845A (en) * 1968-05-10 1970-11-10 Rech En Matiere De Micro Moteu Motor whose magnetic circuit comprises a thin layer of hard magnetic material
US4022311A (en) * 1975-11-19 1977-05-10 Ncr Corporation Electrodynamic actuator
EP0021335A1 (fr) * 1979-06-29 1981-01-07 International Business Machines Corporation Dispositif électromagnétique pour actionner un élément d'impression

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278875A (en) * 1963-12-30 1966-10-11 United Carr Inc Rotary solenoid
BE664464A (fr) * 1964-05-25
DE3114834A1 (de) * 1981-04-11 1982-11-04 Ibm Deutschland Gmbh, 7000 Stuttgart Elektromagnetischer stoesselantrieb

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3539845A (en) * 1968-05-10 1970-11-10 Rech En Matiere De Micro Moteu Motor whose magnetic circuit comprises a thin layer of hard magnetic material
US4022311A (en) * 1975-11-19 1977-05-10 Ncr Corporation Electrodynamic actuator
EP0021335A1 (fr) * 1979-06-29 1981-01-07 International Business Machines Corporation Dispositif électromagnétique pour actionner un élément d'impression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179929A1 (fr) * 1984-10-04 1986-05-07 Ibm Deutschland Gmbh Elément d'actionnement électromagnétique à balancier en particulier pour imprimante à impact

Also Published As

Publication number Publication date
JPS5996708A (ja) 1984-06-04
US4517538A (en) 1985-05-14
JPS6041446B2 (ja) 1985-09-17

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