EP0098316A1 - Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne - Google Patents

Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne Download PDF

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Publication number
EP0098316A1
EP0098316A1 EP82105951A EP82105951A EP0098316A1 EP 0098316 A1 EP0098316 A1 EP 0098316A1 EP 82105951 A EP82105951 A EP 82105951A EP 82105951 A EP82105951 A EP 82105951A EP 0098316 A1 EP0098316 A1 EP 0098316A1
Authority
EP
European Patent Office
Prior art keywords
line printer
matrix line
printing
printer according
section
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.)
Granted
Application number
EP82105951A
Other languages
German (de)
English (en)
Other versions
EP0098316B1 (fr
Inventor
Josef Pichler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mannesmann Tally GmbH Austria
Original Assignee
Mannesmann Tally GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann Tally GmbH Austria filed Critical Mannesmann Tally GmbH Austria
Priority to DE8282105951T priority Critical patent/DE3269162D1/de
Priority to EP82105951A priority patent/EP0098316B1/fr
Priority to AT82105951T priority patent/ATE18021T1/de
Priority to JP58117197A priority patent/JPS5914973A/ja
Priority to US06/514,965 priority patent/US4793252A/en
Publication of EP0098316A1 publication Critical patent/EP0098316A1/fr
Application granted granted Critical
Publication of EP0098316B1 publication Critical patent/EP0098316B1/fr
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
    • B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies
    • B41J2/245—Print head assemblies line printer type

Definitions

  • the invention relates to a matrix line printer with an oscillating frame that can be moved back and forth in front of a printing roller, on which several frame side by side in the line direction. arranged printing elements are provided, each of which can be moved by energizing an electromagnet at least from its rest position into the printing position, the recording medium being able to be advanced after one or more printing passes.
  • line printers In contrast to serial printers, line printers produce dot lines in the line direction, a series of dot lines being necessary to form a complete character line (or the sections of an image). In the direction of advance of the record carrier, therefore, usually only one dot printing element is arranged for some character columns. Across this feed direction, 30 and more dot printing elements are accordingly provided in one line.
  • all printing elements and their drive means are therefore arranged in a line on the oscillating frame and must be moved together as a unit in order to be able to produce dot prints in all dot columns over the full width of the record carrier.
  • a beam-shaped carrier is known (DE-B2-22 24 716), on which the drive means for the dot pressure elements are arranged in the form of electromagnetic coils with relatively long pressure needles located in the core. Since such a so-called plunger anchor is of relatively heavy construction, the oscillating frame is given a considerable mass, for the movement of which sufficiently high drive and deceleration forces are required, so that in such a case, as usual, only a small number of oscillations of the oscillating frame is achieved. This low oscillation frequency makes the matrix printer slow and therefore reduces its printing performance. It should be noted here that a high pressure frequency is also problematic when the long pressure needles are actuated.
  • the present invention is based on the object of simultaneously creating systems with as little mass as possible with respect to the oscillating frame and the printing element, so that the printing frequency and the printing performance are increased and at the same time the manufacturing costs for the matrix line printer are reduced.
  • the electromagnets are designed as hinged armature magnets and that the vibrating frame from a profile bar with a larger cross-sectional part for receiving the magnetic yoke, the electromagnetic coil and the hinged armature and with a smaller cross-sectional part for receiving a short pressure needle through cut-out hinged anchor tip and an adjusting screw.
  • the hinged anchor system can be arranged particularly cheaply in the marked profile rod, an extremely short, low-mass needle arises and only a simple swing frame is required if the space is used to a high degree.
  • the system can also operate with a higher frequency of the oscillating frame and the pressure needle are and can therefore be produced economically.
  • the system is also space-saving since the interior of the profile rod can be used for both the electromagnet and the pressure needle.
  • the profile bar consists of two cross-sectional parts, each of which has wall sections enclosing an opening forming three sides of a rectangle.
  • a reduction in weight of the swing frame can also be achieved in that the profile rod consists of specifically light metal.
  • the assembly work and maintenance work are also facilitated in that a removable wall section facing the pressure roller forms a bearing for the hinged anchor.
  • the oscillating frame is also made compact by the fact that the magnetic yokes provided in the larger cross-sectional part of the profile bar are finally inserted on the side facing away from the pressure roller.
  • the vibratory drive consists of an electrical-mechanical gear, which generates an essentially sinusoidal oscillating motion.
  • the matrix printing process takes place in the largely linear section of the modified sine curve.
  • the swinging movement of the swing frame 1 requires only a minimal pendulum, which in the practical embodiment is about 10 to 15 mm, i. H. comprises about one to three character widths of a character.
  • the printing elements 2 are arranged next to one another in the row direction 3 (FIG. 2).
  • the recording medium not shown, runs perpendicular to the line direction 3, e.g. B. a paper web, and in parallel the (not shown) pressure roller.
  • Each pressure element 2 has an electromagnet 4, which is formed in each case from a magnetic yoke 4a, the electromagnetic coil 4b and from the hinged armature 4c.
  • the electromagnet 4 provided as a 'hinged armature magnet' is arranged within the profile rod 5, a larger cross-sectional part 5a accommodating the magnet yoke 4a, the solenoid coil 4b and the hinged armature 4c, all of which are essential parts.
  • a smaller cross-sectional part 5b essentially holds the pressure needle 2b in its interior.
  • the larger cross-sectional part 5a and the smaller cross-sectional part 5b leave a cutout 6 open in the adjacent area, through which a hinged anchor 4c each passes.
  • the hinged anchor tip 4d lies here without play between the adjusting screw 7 and the head 2c of the pressure needle 2b provided at the rear end, the compression spring 2d being supported against the larger diameter of the head 2c and thus the hinged anchor 4c always in the position shown, i.e. H. holds in the retracted position that forms the rest position of the system.
  • the profile rod 5 consists of the two cross-sectional parts 5a and 5b, each consisting of three wall sections 8a, 8b, 8c and 9a, 9b, 9c, each of which has an opening 10 formed by the open side of a rectangle.
  • the cross section 5c of the profile bar 5 is advantageously stepped on the side facing away from the pressure roller 11a, so that the adjusting screw 7 is easily accessible and, moreover, an exact support is produced in the manufacture of the oscillating frame 1.
  • the wall section 12 Facing the pressure roller, there is a wall section 12 on the front side 11 of the oscillating frame 1, which in each case forms a mounting for one of the numerous folding anchors 4c.
  • the wall section 12 represents an independent profile bar in the row direction 3, which is fastened by means of fastening screws 13 in the wall section 9c and can otherwise have the length of the profile bar 5 or consists of several individual elements.
  • the adjusting screw 7 can also be arranged at the level of the fastening screw 13, the latter being omitted and being replaced by a clamping screw (not shown in more detail) which can be rotated in the wall section 9b and presses on the wall section 12.
  • a clamping screw (not shown in more detail) which can be rotated in the wall section 9b and presses on the wall section 12.
  • an adjusting screw in the manner of the adjusting screw 7 can also be attached to the hinged anchor 4c through the wall surface 12a.
  • the fastening screws 13 are to be inserted or loosened through openings 9d.
  • the wall section 12 is supported on the wall section 9c and on one leg of the magnetic yoke 4a by means of projections 14 and 15, which, however, in turn leave recesses 14a and 15a for the hinged anchor 4c.
  • a groove 16 is formed, into which an elastic strand 17 is inserted, but which extends slightly beyond the groove 16, so that the hinged anchor 4c is supported tangentially as on an axis of rotation.
  • the hinged anchors 4c are also advantageously guided laterally in the recesses 14a and 15a with little friction.
  • a low-friction and low-wear guide bushing 18 is inserted in the wall section 9b. Within the guide bushing 18, a precisely ground ruby can also form the bearing for the printing needles 2b.
  • the printing needles 2b are ground flat with the wall section 9b in the rest position shown.
  • the magnet yokes 4a are also finally inserted in the larger cross-sectional part 5a on the side 11a facing away from the pressure roller, which is achieved by pressing in the magnet yokes 4a.
EP82105951A 1982-07-03 1982-07-03 Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne Expired EP0098316B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8282105951T DE3269162D1 (en) 1982-07-03 1982-07-03 Oscillating frame arrangement for the print elements in a matrix line printer
EP82105951A EP0098316B1 (fr) 1982-07-03 1982-07-03 Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne
AT82105951T ATE18021T1 (de) 1982-07-03 1982-07-03 Schwingrahmen-vorrichtung fuer die druckelemente eines matrix-zeilendruckers.
JP58117197A JPS5914973A (ja) 1982-07-03 1983-06-30 マトリツクス・ラインプリンタ
US06/514,965 US4793252A (en) 1982-07-03 1983-07-18 Matrix line printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82105951A EP0098316B1 (fr) 1982-07-03 1982-07-03 Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne

Publications (2)

Publication Number Publication Date
EP0098316A1 true EP0098316A1 (fr) 1984-01-18
EP0098316B1 EP0098316B1 (fr) 1986-02-19

Family

ID=8189115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105951A Expired EP0098316B1 (fr) 1982-07-03 1982-07-03 Dispositif à cadre oscillant pour les éléments d'impression d'une imprimante matricielle à la ligne

Country Status (5)

Country Link
US (1) US4793252A (fr)
EP (1) EP0098316B1 (fr)
JP (1) JPS5914973A (fr)
AT (1) ATE18021T1 (fr)
DE (1) DE3269162D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE84469T1 (de) * 1989-02-14 1993-01-15 Mannesmann Ag Schwingrahmen fuer die druckelemente eines matrix- zeilendruckers.
ATE113902T1 (de) * 1989-09-18 1994-11-15 Mannesmann Ag Matrixnadeldruckkopf.
IT1247770B (it) * 1990-10-31 1994-12-30 Microlys Spa Testa di stampa a matrice di punti per stampa ad alta definizione o ad alta velocita'
DE69309256T2 (de) * 1993-04-28 1997-07-03 Compuprint Spa Punktnadeldruckkopf
WO2011008266A1 (fr) * 2009-07-14 2011-01-20 Flocon, Inc. Dispositif applicateur de liquide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB786024A (en) * 1948-10-01 1957-11-13 Gerhard Dirks Improvements relating to means for the printing of characters
DE2224716B2 (de) * 1971-05-26 1976-04-15 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Mosaikdrucker
FR2387780A1 (fr) * 1977-04-22 1978-11-17 Seikosha Kk Imprimante par points
EP0027564A2 (fr) * 1979-10-19 1981-04-29 International Business Machines Corporation Imprimante avec dispositif pour l'inversion du sens de déplacement après une ligne d'écriture partielle
GB2075427A (en) * 1978-03-17 1981-11-18 Donald G Hebert Wire matrix print head assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1036375B (it) * 1975-06-26 1979-10-30 C Olivetti Ec S P A Ing Dispositivo di stampa a punti per macchine da calcola o simili macchine per ufficio
US4230038A (en) * 1977-06-23 1980-10-28 Helmut Falk Matrix print head assembly
IT1099489B (it) * 1978-09-11 1985-09-18 Honeywell Inf Systems Testina stampante a matrice perfezionata
US4401392A (en) * 1979-05-14 1983-08-30 Blomquist James E Dot matrix print head
DE2927385C2 (de) * 1979-07-04 1986-01-16 Mannesmann AG, 4000 Düsseldorf Klappanker-Druckkopf für einen Nadeldrucker
US4320981A (en) * 1980-03-10 1982-03-23 Data General Corporation Matrix printhead apparatus
US4351235A (en) * 1980-09-11 1982-09-28 Mannesmann Tally Corporation Dot printing mechanism for dot matrix line printers
DE3164230D1 (en) * 1980-12-05 1984-07-19 Tokyo Electric Co Ltd Printing head of dot printer
US4382701A (en) * 1981-05-27 1983-05-10 International Computers Ltd. Wire matrix printing apparatus
JPS58126172A (ja) * 1982-01-22 1983-07-27 Nec Corp 印字ハンマ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB786024A (en) * 1948-10-01 1957-11-13 Gerhard Dirks Improvements relating to means for the printing of characters
DE2224716B2 (de) * 1971-05-26 1976-04-15 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Mosaikdrucker
FR2387780A1 (fr) * 1977-04-22 1978-11-17 Seikosha Kk Imprimante par points
GB2075427A (en) * 1978-03-17 1981-11-18 Donald G Hebert Wire matrix print head assembly
EP0027564A2 (fr) * 1979-10-19 1981-04-29 International Business Machines Corporation Imprimante avec dispositif pour l'inversion du sens de déplacement après une ligne d'écriture partielle

Also Published As

Publication number Publication date
ATE18021T1 (de) 1986-03-15
EP0098316B1 (fr) 1986-02-19
US4793252A (en) 1988-12-27
DE3269162D1 (en) 1986-03-27
JPS5914973A (ja) 1984-01-25

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