EP0098316B1 - 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
EP0098316B1
EP0098316B1 EP82105951A EP82105951A EP0098316B1 EP 0098316 B1 EP0098316 B1 EP 0098316B1 EP 82105951 A EP82105951 A EP 82105951A EP 82105951 A EP82105951 A EP 82105951A EP 0098316 B1 EP0098316 B1 EP 0098316B1
Authority
EP
European Patent Office
Prior art keywords
printer
section
matrix line
roller
profile bar
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
EP82105951A
Other languages
German (de)
English (en)
Other versions
EP0098316A1 (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 AT82105951T priority patent/ATE18021T1/de
Priority to EP82105951A priority patent/EP0098316B1/fr
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 a plurality of pressure elements arranged side by side in the line direction are provided, each of which can be moved into the printing position by energizing an electromagnet at least from its rest position, after one or more Passports of the record carrier is advanceable.
  • 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 feed direction 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 elements are therefore arranged in a line on the oscillating frame and must be moved together as a structural 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 No. 2224716), on which the drive means for the dot pressure elements in the form of electromagnetic coils with relatively long pressure needles located in the core are arranged. 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 operating the long pressure needles.
  • Matrix line printers designated at the outset with their type are known several times (DE-B No. 2224716; Fr-A No. 2387780; US-A No. 3941051).
  • the vibrating frames with the attached plunger coils known from these matrix printers are relatively heavy, and the large masses require a strong drive.
  • compensating masses are also required, so that the effort is considerably increased and the printer requires a high price.
  • the transmission of the driving forces to the printing needles is complex and complicated.
  • 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 the oscillating frame consists of a profile bar extending in the row direction with a larger cross-sectional part which is open on its side facing the pressure roller and which is formed from wall sections including three sides of a rectangle and one wall section of which is continued at its free end on the pressure roller side into a smaller cross-sectional part of the profile bar, which is likewise delimited by wall sections forming three sides of a rectangle and has an open side which is adjacent to the open side of the larger cross-sectional part and is transverse to it with its opening plane runs, with the magnetic yoke, the electromagnetic coil and on the open side of the hinged armature being accommodated in the larger cross-sectional part, while in the smaller cross-sectional part in each case a short pressure needle, which is characterized by d he open side of this cross-sectional part extending hinged anchor tip and an adjusting screw for the hinged anchor are included.
  • the hinged anchor system can be arranged particularly favorably in the marked profile bar, an extremely short, low-mass needle is created and only a simple oscillating frame is required if the space is used to a high degree.
  • the system can also be operated with a higher frequency of the oscillating frame and the pressure needle 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.
  • a reduction in weight of the swing frame can also be achieved in that the profile rod is made of specifically light metal.
  • the assembly work and maintenance work are also facilitated by the fact that the Pressure roller facing a detachable wall section forms a storage 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 gearbox that produces an essentially sinusoidal vibratory motion.
  • the matrix printing process takes place in the largely straight-line section of the modified sine curve.
  • the swinging movement of the swing frame 1 requires only a minimal pendulum travel, 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 11a facing away from the pressure roller, so that the adjusting screw 7 is easily accessible and, moreover, an exact support is produced during 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, each of which forms a bearing for one of the numerous hinged 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 detail) which can be rotated in the wall section 9b and presses on the wall section 12.
  • a clamping screw (not shown in 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 somewhat 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 in the larger cross-sectional part 5a on the side facing away from the pressure roller 11a sets what is achieved by pressing the magnet yokes 4a.

Claims (7)

1. Imprimante de lignes par percussion avec un chariot-navette exerçant un mouvement de va-et- vientdevant un tambour d'impression et sur lequel chariot-navette plusieurs éléments d'impression disposés les uns à côté des autres sont prévus et peuvent être déplacés, par enclenchement d'un électro-aimant, au moins à partir de leur position de repos en position d'impression, le support d'enregistrement pouvant être déplacé vers l'avant après une ou plusieurs frappes, caractérisée en ce que les électro-aimants (4) sont conçus comme aimants à armature basculante et que le chariot-navette (1) consiste en une barre en profilé (5) s'étendant dans le sens de la ligne, avec élément transversal (5a) plus grand ouvert sur son côté orienté vers le tambour d'impression, constitué par des sections de paroi (8a, 8b, 8c) représentant trois côtés d'un rectangle et dont l'une des sections de paroi (8a) se prolonge à son extrémité libre du côté tambour d'impression, par une section transversale (5b) plus petite de la barre en profilé (5) qui est également fimitée par trois côtés d'un rectangle formant l'es sections de paroi (9a, 9b, 9c) et possédant un côté ouvert (10) avoisinant au côté ouvert l'élément transversal plus grand (5a) et dont le niveau de l'ouverture est transversal par rapport à ce dernier, la culasse magnétique (4a), la bobine d'électro-aimant (4b) sont logées dans la partie transversale plus grande (5a) et l'armature basculante (4c) sur le côté ouvert tandis que la section transversale plus petite (5b) abrite une courte aiguille d'impression (2b), la pointe de l'armature basculante (4d) traversant le côté ouvert de cette section transversale et une vis de réglage (7) pour l'armature bas- cutante (4c}.
2. Imprimante de lignes par percussion suivant la revendication 1, caractérisée en ce que la barre en profilé (5) est en métal spécifiquement léger.
3. Imprimante de lignes par percussion suivant une ou les deux revendications 1 et 2, caractérisée en ce que la barre en profilé (5), dans la section transversale (5c) entre la section transversale plus grande (5a) et la section transversale plus petite (5b), est disposée en gradin sur le côté opposé au tambour d'impression.
4. Imprimante de lignes par percussion suivant les revendications 1 à 3, caractérisée en ce qu'une section de paroi (12) amovible orientée vers le tambour d'impression forme un logement pour l'armature basculante (4c).
5. Imprimante de lignes par percussion suivant les revendications 1 à 4, caractérisée en ce que dans la section de paroi amovible (12) orientée vers letambour d'impression, une rainure (16), parallèle à la face de paroi (12a), est prévue et reprend une tige élastique (17), sur la partie dépassant la rainure (16) de laquelle s'appuie l'armature basculante (4c) en tant que pivot.
6. Imprimante de lignes par percussion suivant les revendications 1 à 5, caractérisée en ce que dans la section de paroi (9b) orientée vers le tambour d'impression, de la section transversale plus petite (5b), une douille de guidage (18) est prévue pour la courte aiguille d'impression (2b).
7. Imprimante de lignes par percussion suivant les revendications 1 à 6, caractérisée en ce que les culasses magnétiques (4a) prévues dans la section transversale plus grande (5a) de la barre en profilé (5) sont incorporées en formant une surface plane sur le côté opposé au tambour d'impression.
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
AT82105951T ATE18021T1 (de) 1982-07-03 1982-07-03 Schwingrahmen-vorrichtung fuer die druckelemente eines matrix-zeilendruckers.
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
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 EP0098316A1 (fr) 1984-01-18
EP0098316B1 true 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.
EP0418433B1 (fr) * 1989-09-18 1994-11-09 MANNESMANN Aktiengesellschaft Tête d'impression à matrice d'aiguilles
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'
EP0622214B1 (fr) * 1993-04-28 1997-03-26 COMPUPRINT S.p.A. Tête d'impression par points à aiguilles
US8753027B2 (en) * 2009-07-14 2014-06-17 Flocon, Inc. Liquid applicator device

Family Cites Families (14)

* 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
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
JPS53133117A (en) * 1977-04-22 1978-11-20 Seikosha Kk Wire printer
US4230038A (en) * 1977-06-23 1980-10-28 Helmut Falk Matrix print head assembly
US4230412A (en) * 1978-03-17 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
US4353298A (en) * 1979-10-19 1982-10-12 International Business Machines Corporation Partial line turnaround for printers
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

Also Published As

Publication number Publication date
ATE18021T1 (de) 1986-03-15
US4793252A (en) 1988-12-27
EP0098316A1 (fr) 1984-01-18
DE3269162D1 (en) 1986-03-27
JPS5914973A (ja) 1984-01-25

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