EP0205941A2 - Entraînement sans jeu pour chariots d'impression de dispositifs d'impression de lignes - Google Patents

Entraînement sans jeu pour chariots d'impression de dispositifs d'impression de lignes Download PDF

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Publication number
EP0205941A2
EP0205941A2 EP86107002A EP86107002A EP0205941A2 EP 0205941 A2 EP0205941 A2 EP 0205941A2 EP 86107002 A EP86107002 A EP 86107002A EP 86107002 A EP86107002 A EP 86107002A EP 0205941 A2 EP0205941 A2 EP 0205941A2
Authority
EP
European Patent Office
Prior art keywords
printer carriage
printer
traction means
movement
carriage
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Withdrawn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
EP86107002A
Other languages
German (de)
English (en)
Other versions
EP0205941A3 (fr
Inventor
Gerhard Dipl.-Ing.(Fh) Stempfl
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0205941A2 publication Critical patent/EP0205941A2/fr
Publication of EP0205941A3 publication Critical patent/EP0205941A3/fr
Withdrawn legal-status Critical Current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
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20—Positive-feed character-spacing mechanisms

Definitions

  • the invention relates to a device for driving printer carriages in printing devices according to the preamble of patent claim 1.
  • a dot-matrix print head is generally moved along a paper roller by a motor.
  • the needle print head is attached to a printer carriage, which in turn is mounted on guide rods via bushings.
  • the cable or toothed belt which is used as a traction means and is driven by a motor, is generally attached to an attachment of the printer carriage or the bushings.
  • the printer carriage When writing with such printing devices, the printer carriage is now constantly moved back and forth between two reversal points, the bearing air present in the liners in the reversal phase leading to a "tilting" of the printer carriage in the area of the reversal points.
  • the object of the invention is to design a device for driving printer carriages of the type mentioned at the outset in such a way that the internal clearance in the bearing elements of the printer carriage cannot have a negative effect on the noise development and the writing.
  • the traction means be it a rope or a toothed belt is attached to the printer carriage and / or to the bearing elements in such a way that the attachment points of the traction device are offset from one another parallel to the direction of movement of the printer carriage such that they are on the printer carriage or the location elements exert a defined torque, the tilting moment that occurs due to the internal clearance in the bearing elements when the movement is reversed can be fully compensated for if the dimensions are appropriate.
  • the tipping moment of the car When attaching the traction device outside the center of gravity, it is possible to compensate the tipping moment of the car in the reverse phase by introducing an appropriately dimensioned torque.
  • the moment can be determined by the offset dimension, i.e. the distance between the two attachment points and be dimensioned by the belt tension.
  • the device according to the invention makes it possible to avoid the tilting noise of the printer carriage in the reverse phase without additional effort compared to conventional simple printers, be it matrix printers or typewriter printers, and additionally to prevent typographical errors occurring as a result.
  • the left figure represents a schematic sectional view of the printer carriage with associated bearing element and the right figure shows a diagram of the forces occurring and thus the moment.
  • FIG. 1 shows a schematic representation of a conventional printing device and a representation of the occurring (force moments) and the resulting tilting movement of the printer carriage at the left reversal point of the printer carriage.
  • Fig. 2 shows a schematic representation of the same printing device (moments of force) and the resulting tilting movement of the printer carriage at the right reversal point.
  • Fig. 3 shows a schematic representation of an embodiment of the invention, in which the traction means is fastened in the horizontal axis of gravity of the printer carriage and the associated course of forces.
  • Fig. 4 shows a schematic representation of the printer carriage with a connection of the traction means outside of the axis of gravity during the movement of the printer carriage from left to right with the associated course of forces.
  • FIG. 5 shows a schematic representation of the connection of the traction means to the printer carriage outside of the axis of gravity when the printer carriage moves from right to left with the associated course of forces.
  • the bearing clearance at the right reversal point when the printer carriage moves to the left (arrow direction) results in a tilting movement K which is opposite to the direction of the tilting movement in FIG. 1.
  • the bearing bush LB is supported with the surfaces BF3 and BF4 on the guide rod F.
  • the traction means S is now attached to the printer carriage in such a way that the traction means is arranged symmetrically to the horizontal axis of gravity HS, the fastening points BP being offset from one another parallel to the direction of movement of the printer carriage, this results in a corresponding size of the offset dimension V the force curve shown in the right part of FIG. 3 and thus a directed moment curve.
  • the liner LB is always free of play with the contact surfaces BF3 and BF4 on the guide rod F.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
EP86107002A 1985-06-07 1986-05-23 Entraínement sans jeu pour chariots d'impression de dispositifs d'impression de lignes Withdrawn EP0205941A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3520569A DE3520569C1 (de) 1985-06-07 1985-06-07 Spielfreier Antrieb fuer Druckerwagen in Zeilendruckeinrichtung
DE3520569 1985-06-07

Publications (2)

Publication Number Publication Date
EP0205941A2 true EP0205941A2 (fr) 1986-12-30
EP0205941A3 EP0205941A3 (fr) 1989-05-31

Family

ID=6272773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107002A Withdrawn EP0205941A3 (fr) 1985-06-07 1986-05-23 Entraínement sans jeu pour chariots d'impression de dispositifs d'impression de lignes

Country Status (3)

Country Link
US (1) US5032033A (fr)
EP (1) EP0205941A3 (fr)
DE (1) DE3520569C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442484A3 (en) * 1990-02-13 1992-01-08 Canon Kabushiki Kaisha A recording apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721035C1 (en) * 1987-06-25 1988-12-29 Siemens Ag Arrangement for the clearance-free and delay-free movement of elements to be driven in printing devices
US6244767B1 (en) 2000-04-20 2001-06-12 Samsung Electronics Co., Ltd. Image forming apparatus for preventing paper jam during continuous paper returning operation
DE10031817C1 (de) * 2000-06-30 2002-02-28 Wincor Nixdorf Gmbh & Co Kg Druckermodul mit einem Nadeldruckkopf
JP4670539B2 (ja) * 2005-08-08 2011-04-13 ブラザー工業株式会社 画像読取装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496547A (en) * 1965-10-12 1970-02-17 American Chain & Cable Co Control system and printer controlled thereby
GB1250665A (fr) * 1967-11-15 1971-10-20
US3861511A (en) * 1973-03-07 1975-01-21 Ncr Co Rotational shaft coupling apparatus with adjustable coupling ratio and positive displacement
US4030589A (en) * 1973-04-25 1977-06-21 Ncr Corporation Data processing machine
US3957148A (en) * 1973-12-26 1976-05-18 General Electric Company Logical solution for mechanical clutch start/stop wear
DE2445081C3 (de) * 1974-09-20 1985-12-05 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Steuerung der Bewegung eines Druckerwagens für Druckwerke, insbesondere für Fernschreib- und Schreibmaschinen
US3987882A (en) * 1975-04-03 1976-10-26 Computer Transceiver Systems, Inc. Printer with horizontally movable print head
US4293235A (en) * 1978-04-19 1981-10-06 Kabushiki Kaisha Suwa Seikosha Structure for a linear motor for a printer
EP0016995B1 (fr) * 1979-03-30 1984-08-22 Ascom Autelca Ag Mécanisme d'entraînement et de guidage d'une tête à aiguilles d'une imprimante à aiguiller
DE2926962A1 (de) * 1979-07-04 1981-01-22 Olympia Werke Ag Antriebsvorrichtung fuer einen druckwerkswagen in schreib- o.ae. bueromaschinen
US4572685A (en) * 1981-04-13 1986-02-25 Hitachi Koki Co., Ltd. Dot printer
US4353262A (en) * 1981-06-10 1982-10-12 Mannesmann Tally Corporation Rotary/linear shuttle mechanism
US4468144A (en) * 1982-06-09 1984-08-28 Contitronix, Inc. Detachable carriage assembly for printer
US4444521A (en) * 1982-08-02 1984-04-24 United Systems Corporation Print medium advancing mechanism including print head retraction
US4466034A (en) * 1982-12-27 1984-08-14 Magnetic Peripherals Inc. Carriage assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442484A3 (en) * 1990-02-13 1992-01-08 Canon Kabushiki Kaisha A recording apparatus
US5611632A (en) * 1990-02-13 1997-03-18 Canon Kabushiki Kaisha Recording apparatus having biased recording means

Also Published As

Publication number Publication date
US5032033A (en) 1991-07-16
DE3520569C1 (de) 1987-01-08
EP0205941A3 (fr) 1989-05-31

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Inventor name: STEMPFL, GERHARD, DIPL.-ING.(FH)