EP0382994B1 - Cadre oscillant pour les éléments imprimants d'une imprimante matricielle à la ligne - Google Patents
Cadre oscillant pour les éléments imprimants d'une imprimante matricielle à la ligne Download PDFInfo
- Publication number
- EP0382994B1 EP0382994B1 EP89730028A EP89730028A EP0382994B1 EP 0382994 B1 EP0382994 B1 EP 0382994B1 EP 89730028 A EP89730028 A EP 89730028A EP 89730028 A EP89730028 A EP 89730028A EP 0382994 B1 EP0382994 B1 EP 0382994B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leg
- oscillating frame
- hinged armature
- hinged
- frame according
- 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 - Lifetime
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 11
- 238000010276 construction Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 241001295925 Gegenes Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
- B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
- B41J2/27—Actuators for print wires
- B41J2/275—Actuators for print wires of clapper type
-
- 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 vibrating frame for the printing elements of a matrix line printer, which are designed in a hinged armature construction, wherein in or on a profile bar in the row direction adjacent units are provided, each consisting of a magnetic yoke, an electromagnetic coil, a hinged armature, a hinged armature pivot bearing, a return spring and consist of a pressure element attached to the hinged anchor.
- Such matrix line printers are used to print out a high data output from an electronic computer and are therefore assigned to a computer whose data volume corresponds to a minicomputer or a mainframe system.
- matrix line printers In contrast to serial printers, matrix line printers produce dot lines in the line direction, a series of horizontal 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. In a known matrix line printer (Mannesmann Tally MT 660 / MT 690) 66 or 132 printing elements are provided. Such a matrix line printer writes between 600 and 900 lines per minute for fast typing and approx. 280 to 450 lines per minute for fine typing.
- the electromagnet as Folding armature magnets are formed 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, which is formed from three sides of a rectangle enclosing wall sections and one wall section of which is at its free end on the pressure roller side into a smaller one
- the profile bar which is also 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 extends transversely with its opening plane to the same, in the larger cross-sectional part the magnet yoke, the electromagnetic coil and are accommodated on the open side of the hinged anchors, while in the smaller cross-sectional part there is a short pressure needle which extends through the open side of this cross-sectional part and the hinged anchor tip un d an adjustment screw for the hinged anchor is included.
- the hinged anchor is not clearly
- the hinged armature engages by means of at least one tongue arranged transversely to its longitudinal extent in a recess, is guided laterally and can be pivoted, and in that the return spring is designed as a leg spring which, with one leg end, provides a second lateral guide for forms the hinged anchor.
- the return spring is designed as a leg spring which, with one leg end, provides a second lateral guide for forms the hinged anchor.
- the magnetic yokes with an electromagnetic coil and a stop rod which extends continuously in the row direction and is opposite the folding rod end guided by means of the leg spring are fastened in the profile rod. Both the electromagnetic coils and the stop bar can therefore be easily assembled from an open side of the profile bar and possibly processed on a single level.
- the hinged anchors and an elastic strand forming the hinged anchor pivot bearing with an O cross section are arranged in a front housing part which is fixed to the profile bar and is detachably connected to it.
- a front housing part which is fixed to the profile bar and is detachably connected to it.
- a further development of the invention consists in that the front housing part is fixed by means of at least one rib engaging in a groove-shaped recess on the profile bar. Both the groove-shaped recess and the profile bar set the front housing part to the profile bar within tolerances, so that an exact position of all parts can be achieved as often as required during disassembly and assembly.
- front housing part and the profile bar are releasably connected to one another by means of one or more spring clips.
- the spring clips allow easy, quick and repeated loosening or fastening of the front Housing part on the profile bar.
- the recess into which the hinged armature engages with its tongue, is arranged in one leg of the magnetic yoke. Because of the expansion of the electromagnetic coil, there is always a certain width of the magnetic yoke leg. It is therefore particularly space-saving on the side to use one of the two legs of the magnetic yoke for the depression according to the invention, in order thus to create a more compact design of the entire oscillating frame.
- leg springs are connected to one another in the row direction. This solution leads to a single stamped part and to a very precise definition of the distances between the hinged anchors, which can be achieved due to the one-piece torsion spring body.
- the lateral guidance of the hinged anchor can be further improved in that the spring leg of the leg spring facing the hinged anchor is provided with a U-shaped guide comprising the anchor cross section.
- the vibratory drive consists of an electro-mechanical gearbox that generates 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.e. takes up 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 4 runs perpendicular to the line direction 3 and lies snugly on a pressure abutment 5.
- a profile bar 7 has an upper box part 7a, which is followed by a wall plate 7c on the rear wall 7b.
- the latter wall plate 7c extends downward and receives the 33, 66 or 132 units, each of which has a magnetic yoke 8, an electromagnetic coil 9, a hinged armature 10, a hinged armature pivot bearing 11, a return spring 12 and a pressure element 2 fastened to the hinged armature 10 belong.
- the pressure element 2 can consist, for example, of a pressure needle 2a.
- the magnetic yoke 8 is fastened with a magnetic yoke base 8a in the wall plate 7c and has two magnetic yoke legs 8b and 8c.
- All of the coil feet 13 of the electromagnetic coils 9 are on one Busbar 14 summarized and soldered there to the appropriate conductors.
- the hinged anchor 10 has a tongue 15 which is arranged transversely to its longitudinal extent from bottom to top in FIG. 1 and engages in a recess 16.
- the hinged anchor 10 therefore does not require any lateral guide elements in the row direction 3, so that the hinged anchors theoretically come to lie next to one another in their width arrangement with a small gap.
- the tongue 15 represents only one guide option which, as will be described later, can be replaced by another, but this also does not require any additional space in the row direction 3.
- the return spring 12 is designed as a leg spring 17, with one leg end 18 forming a second lateral guide for the hinged anchor 10.
- a second lateral guide for the hinged anchor 10 arises from the fact that the leg end 18 is firmly connected to the hinged anchor 10, which e.g. can be done by spot welding.
- the (rectangular) cross section of the return spring 12 is of particular importance here.
- the magnet yokes 8 are each equipped with an electromagnetic coil 9, fastened by means of the magnetic base 8a, and a stop bar 19 extending in the row direction 3 is also fastened.
- This stop rod 19 is opposite the hinged anchor end 10a guided by the leg spring 17.
- the leg end 18 therefore always presses the hinged anchor end 10a directly against the stop rod 19, which is made of damping material, e.g. Hard rubber or the like is made.
- a front housing part 20 which to the profile bar 7 fixed and releasably connected to this.
- the front housing part 20 can be injection molded from plastic and is therefore magnetically non-conductive.
- a guide block 21 is pressed in the front housing part 20 in the area of the ink ribbon 6, which consists of a ruby or an extremely hard material, which reduces frictional wear.
- All of the hinged anchors 10 are pivotally supported on the hinged anchor pivot bearing 11, which is formed from a guide trough 22 for an elastic strand 23 with an O cross section.
- the front housing part 20 is fixed with respect to the profile bar 7 by means of a plane 24 made parallel to the plane, wherein a correspondingly tolerated groove-shaped recess 25 is provided in the profile bar 7.
- the housing part 20 is fixed to the profile bar 7 by means of a further guide 33 which engages between two magnet yokes 8 (FIG. 3 and FIG. 1).
- support surfaces 34 are provided on the side of the folding anchor ends 10a.
- the front housing part 20 and the profile bar 7 are detachably connected to one another by means of one or more resilient brackets 26, such a spring bracket 26 engaging around an undercut bar 27 of the profile bar 7 with a bent end 26a.
- a further tongue 15 can join the tongue 15, the associated recess 16, into which the hinged anchor 10 engages with its tongue 15, being arranged in a leg 8b of the magnetic yoke 8.
- the leg springs 17 can be connected to one another in the row direction 3, as can be seen in FIG. 3.
- the individual leg springs 17 are connected to one another by an arcuate connection 28 attached.
- the spring legs 18 of the leg spring 17, each facing the folding anchor 10 are provided with a U-shaped guide 29 encompassing the width of the armature cross section.
- the spring leg 30 facing away from the hinged anchor 10 has openings 31 for the passage of the pressure elements 2.
- the rigidity of the front housing part 20 is reinforced by individual ribs 32 which are cast on.
- the housing part 20, the stop bar 19 and the profile bar 7 form a common plane 35 in the region of the upper box part 7a.
Landscapes
- Impact Printers (AREA)
- Projection-Type Copiers In General (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Claims (9)
- Cadre oscillant (1) pour les éléments d'impression (2) d'une imprimante matricielle ligne par ligne, qui sont réalisés selon le type à armature battante, des unités modulaires disposées l'une à côté de l'autre dans la direction des lignes (3) étant prévues dans ou sur une barre profilée (7), unités qui, à chaque fois, sont constituées d'une culasse d'aimant (8), d'une bobine électromagnétique (9), d'une armature battante (10), d'un palier pivotant (11) pour l'armature battante, d'un ressort de rappel (12), et d'un élément d'impression (2) fixé à l'armature battante (10),
caractérisé en ce que l'armature battante (10), à chaque fois, peut pivoter et est guidée latéralement au moyen d'au moins une languette (15) agencée perpendiculairement à son extension longitudinale, s'engageant dans un évidement (16), et en ce que le ressort de rappel (12) est réalisé en tant que ressort à branches (17) qui forme, par une extrémité de branche (18), un second guide latéral pour l'armature battante (10). - Cadre oscillant selon la revendication 1,
caractérisé en ce que, dans la barre profilée (7), sont fixées les culasses d'aimant (8) à bobine électromagnétique (9) et une barre de butée (19) s'étendant de façon continue dans la direction des lignes (3) et opposée à l'extrémité (10a) de l'armature battante guidée au moyen du ressort à branches (17). - Cadre oscillant selon la revendication 1,
caractérisé en ce que l'armature battante (10) et une bague élastique annulaire (23), formant le palier pivotant (11) de l'armature battante, sont agencées dans une partie de boîtier avant (20) qui est positionnée par rapport à la barre profilée (7) et reliée de façon amovible à celle-ci. - Cadre oscillant selon la revendication 3,
caractérisé en ce que la partie de boîtier avant (20) est positionnée au moyen d'au moins une nervure (24) s'engageant dans un évidement (25) en forme de rainure sur la barre profilée (7). - Cadre oscillant selon une ou plusieurs des revendications 1 à 4,
caractérisé en que la partie de boîtier avant (20) et la barre profilée (7) sont reliées l'une à l'autre de façon amovible au moyen d'un ou plusieurs étriers élastiques (26). - Cadre oscillant selon une ou plusieurs des revendications 1 à 5,
caractérisé en ce que l'évidement (16), dans lequel s'engage l'armature battante (10) par sa languette (15), est agencé dans une branche (8b) de la culasse d'aimant (8). - Cadre oscillant selon une ou plusieurs des revendications 1 à 6,
caractérisé en ce que les ressorts à branches (17) sont reliés les uns aux autres dans la direction des lignes (3). - Cadre oscillant selon les revendications 1 et 7,
caractérisé en ce que la branche (18), proche de l'armature battante (10), du ressort à branches (17) est munie d'un guide en forme de U (29) entourant la section transversale de l'armature. - Cadre oscillant selon la revendication 8,
caractérisé en ce que la branche (30), opposée à l'armature battante (10), du ressort à branches (17) présente des ouvertures (31) pour le passage des éléments d'impression (2).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89730028A EP0382994B1 (fr) | 1989-02-14 | 1989-02-14 | Cadre oscillant pour les éléments imprimants d'une imprimante matricielle à la ligne |
DE8989730028T DE58903294D1 (de) | 1989-02-14 | 1989-02-14 | Schwingrahmen fuer die druckelemente eines matrix-zeilendruckers. |
AT89730028T ATE84469T1 (de) | 1989-02-14 | 1989-02-14 | Schwingrahmen fuer die druckelemente eines matrix- zeilendruckers. |
JP2031289A JPH02241750A (ja) | 1989-02-14 | 1990-02-09 | マトリクスラインプリンタの印字素子のための振動枠 |
US07/478,275 US5216950A (en) | 1989-02-14 | 1990-02-09 | Vibration frame for print elements of a matrix line printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89730028A EP0382994B1 (fr) | 1989-02-14 | 1989-02-14 | Cadre oscillant pour les éléments imprimants d'une imprimante matricielle à la ligne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0382994A1 EP0382994A1 (fr) | 1990-08-22 |
EP0382994B1 true EP0382994B1 (fr) | 1993-01-13 |
Family
ID=8203108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89730028A Expired - Lifetime EP0382994B1 (fr) | 1989-02-14 | 1989-02-14 | Cadre oscillant pour les éléments imprimants d'une imprimante matricielle à la ligne |
Country Status (5)
Country | Link |
---|---|
US (1) | US5216950A (fr) |
EP (1) | EP0382994B1 (fr) |
JP (1) | JPH02241750A (fr) |
AT (1) | ATE84469T1 (fr) |
DE (1) | DE58903294D1 (fr) |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE636591A (fr) * | 1962-09-10 | |||
US3745917A (en) * | 1971-06-16 | 1973-07-17 | Datadyne Corp | Digital printer hammer assembly |
US3981236A (en) * | 1974-03-11 | 1976-09-21 | Sperry Rand Corporation | Printhead for impact printer |
US3964384A (en) * | 1974-03-11 | 1976-06-22 | Sperry Rand Corporation | High speed printing mechanism |
US4230038A (en) * | 1977-06-23 | 1980-10-28 | Helmut Falk | Matrix print head assembly |
DE7827095U1 (de) * | 1978-09-08 | 1979-11-22 | Mannesmann Ag, 4000 Duesseldorf | Matrixdruckkopf |
US4375338A (en) * | 1979-07-16 | 1983-03-01 | Kabushiki Kaisha Suwa Seikosha | Wire dot print head |
JPS5795480A (en) * | 1980-12-04 | 1982-06-14 | Tokyo Electric Co Ltd | Printing head for dot printer |
JPS57126673A (en) * | 1981-01-30 | 1982-08-06 | Hitachi Ltd | Printing head |
JPS5798366A (en) * | 1981-09-28 | 1982-06-18 | Ricoh Co Ltd | Dot printer |
US4444519A (en) * | 1982-03-09 | 1984-04-24 | Theodore Jay Goldlander | Printers |
ATE18021T1 (de) * | 1982-07-03 | 1986-03-15 | Mannesmann Tally Gmbh | Schwingrahmen-vorrichtung fuer die druckelemente eines matrix-zeilendruckers. |
US4441421A (en) * | 1982-09-22 | 1984-04-10 | Hossein Khorsand | Print hammer apparatus |
US4532862A (en) * | 1983-07-01 | 1985-08-06 | Centronics Data Computer Corp. | Print hammer bank |
US4539905A (en) * | 1983-12-05 | 1985-09-10 | Zenner Walter J | Dot matrix line printer and print element driver assembly therefor |
US4569605A (en) * | 1984-02-02 | 1986-02-11 | International Business Machines Corporation | Wire driving armature for dot printer |
JPS60179265A (ja) * | 1984-02-28 | 1985-09-13 | Nec Home Electronics Ltd | プリンタ用印字ハンマ |
JPS60189457A (ja) * | 1984-03-08 | 1985-09-26 | Tokyo Electric Co Ltd | ドツトプリンタヘツド |
JPS6154945A (ja) * | 1984-08-27 | 1986-03-19 | Nhk Spring Co Ltd | プリンタヘツド |
JPS6164459A (ja) * | 1984-09-07 | 1986-04-02 | Citizen Watch Co Ltd | ドツトラインプリンタの印字ヘツド |
JPS6244461A (ja) * | 1985-08-22 | 1987-02-26 | Copal Co Ltd | ワイヤドツトヘツド |
EP0338176B1 (fr) * | 1988-04-22 | 1993-06-23 | MANNESMANN Aktiengesellschaft | Tête d'impression pour imprimante matricielle à aiguilles |
-
1989
- 1989-02-14 DE DE8989730028T patent/DE58903294D1/de not_active Expired - Fee Related
- 1989-02-14 AT AT89730028T patent/ATE84469T1/de not_active IP Right Cessation
- 1989-02-14 EP EP89730028A patent/EP0382994B1/fr not_active Expired - Lifetime
-
1990
- 1990-02-09 JP JP2031289A patent/JPH02241750A/ja active Pending
- 1990-02-09 US US07/478,275 patent/US5216950A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0382994A1 (fr) | 1990-08-22 |
ATE84469T1 (de) | 1993-01-15 |
JPH02241750A (ja) | 1990-09-26 |
DE58903294D1 (de) | 1993-02-25 |
US5216950A (en) | 1993-06-08 |
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