EP1086818A1 - Imprimante avec barre d'impression stabilisée flottante - Google Patents

Imprimante avec barre d'impression stabilisée flottante Download PDF

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Publication number
EP1086818A1
EP1086818A1 EP00117776A EP00117776A EP1086818A1 EP 1086818 A1 EP1086818 A1 EP 1086818A1 EP 00117776 A EP00117776 A EP 00117776A EP 00117776 A EP00117776 A EP 00117776A EP 1086818 A1 EP1086818 A1 EP 1086818A1
Authority
EP
European Patent Office
Prior art keywords
printer
pressure
pressure bar
printer according
rotationally fixed
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Withdrawn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
EP00117776A
Other languages
German (de)
English (en)
Inventor
Paul Freitag
Heinz Saathoff
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.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf GmbH and Co KG
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 Wincor Nixdorf GmbH and Co KG filed Critical Wincor Nixdorf GmbH and Co KG
Publication of EP1086818A1 publication Critical patent/EP1086818A1/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Withdrawn legal-status Critical Current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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/08—Bar or like line-size platens
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/20—Platen adjustments for varying the strength of impression, for a varying number of papers, for wear or for alignment, or for print gap adjustment

Definitions

  • the invention relates to a printer with a Printer frame, with a movable in the printing direction Printhead and with a pressure bar attached to the Printer frame guided vertically to the print plane is and that with elastic elements in the area of his Longitudinal ends is mounted on the printer frame, the Print bar with the printer frame over at least two Swivel lever is coupled to one for Longitudinal pressure beam parallel axis swiveling stored and non-rotatably connected.
  • the pressure beam is from the elastic Elements e.g. against a feeler roller attached to the printhead attached, pressed.
  • the pressure bar is a Carry out a tilting movement around the feeler roller or the print head and whereby the pressure forces against the print head in Marginal area are less than in the middle. this leads to especially in the edge areas of the pressure beam faded printed image.
  • US-PS 4,957,382 describes a printer according to the preamble of claim 1.
  • pressure bar is to solve the problem described above
  • Parallel guidance realized via a bracket that rotates on Printer frame is stored and the stirrup leg to the Grip the longitudinal ends of the pressure beam.
  • the assembly of the Printer is described by one above Pressure beam difficult because of the pressure beam and the bracket can only be assembled after installation in the printer can.
  • the bracket must be very accurate be made because the distance between the stirrup legs is accurate must correspond to the length of the pressure beam. Because of the difficult Assembly and the high demands on the Manufacturing accuracy increases the cost of manufacturing the Printer.
  • the object of the invention is therefore to provide a printer to provide floating pressure bars, where the non-rotatable connection together with the Print bar can be installed and removed in the printer.
  • this is the non-rotatable connection of the Swing lever effecting element from the storage held at the same time on the pressure beam.
  • This is it possible that the non-rotatable connection effecting element on Install the pressure bar before it is inserted into the printer is installed.
  • a simultaneous installation of Pressure beam and the one causing the non-rotatable connection Element in the printer possible.
  • the free ends of the pivot levers are designed so that at two fixed points on the printer frame can attack and a pivoting of the pivot lever by one Allow axis parallel to the longitudinal direction of the pressure beam.
  • the free ends of the swivel levers can be Adjust the best case so that it is already in Printer frame can attack existing devices. Of course it is possible to use the free ends of the To design swivel levers differently.
  • the constructive changes to the printer frame are reduced to a minimum because there is no need for breakpoints for the element causing the non-rotatable connection assemble.
  • the non-rotatable connection does not just assembling a printer with cross stabilized floating pressure beam facilitates, but also the development of a printer according to the invention simplified because changes to the construction of the Pressure bars are easier to carry out than changes to Printer frame.
  • the element causing the non-rotatable connection preferably symmetrical with respect to the longitudinal direction of the Pressure beam arranged and rotatably mounted.
  • This Arrangement is particularly useful in terms of Longitudinally symmetrical pressure bar.
  • the moments acting on the non-rotatable connection can be further reduced if the swivel levers as close as possible in the area of the elastic elements are arranged.
  • the element causing the non-rotatable connection preferably a rigid, rod-shaped one Stabilizing body, e.g. a wave.
  • a rigid, rod-shaped one Stabilizing body e.g. a wave.
  • the non-rotatable connection effecting element in the area of elastic elements is rotatably mounted.
  • the rigid, rod-shaped Stabilizing body can therefore preferably approximately Length of the pressure bar.
  • the on the element that the non-rotatable connection causes moments to act reduce further if the swivel levers are as possible are arranged close to the area of the elastic elements, preferably near the storage of the rotatable Connection effecting element on the pressure beam.
  • Bearing elements with which the stabilizing body on Pressure bars should be stored with Fasteners, e.g. Snap hooks are provided in recesses of the pressure beam or a carrier of the Intervene pressure bar. So that the bearing elements on can be easily attached to the pressure beam.
  • the free ends of the swivel levers are fork-shaped, where at least half the circumference of a parallel to Longitudinal pressure beam extending round body from Fork legs are gripped at the free end.
  • the legs are made of an elastic material, so that the free end of the pivot lever on the round body locked in place.
  • the free end must be designed so that the Swivel lever when moving the pressure beam both the round body towards the print head and away from the print head contacted.
  • Figure 1 shows a perspective view of a vertical to the pressure level adjustable pressure bar 10.
  • the Pressure beam 10 has a head part 12 and a carrier 14.
  • Das Head part 12 has an abutment surface 16, which is not for drawn printing plane of the printer at least approximately is parallel.
  • the abutment surface 16 has both longitudinal ends of guide surfaces 18 and 20. Die Guide surfaces 18 and 20 fall towards the longitudinal ends ramped down.
  • a feeler roller 22 At the long end in the area of Guide surface 20 is a feeler roller 22, which with a printhead of the printer, not shown here connected is.
  • the abutment surface 16 has one on both long sides A large number of guide projections 24 for guiding one not drawn media.
  • the carrier 14 has on his a recess 26 on the longitudinal side facing away from the head part 12 and two legs 28 and 30. From each of the legs 28, 30 is a double at least approximately rectangular bent punching tab 32, 34 punched out. One recognizes one Attack member 36 of the punch tab 34; another one Attack member of the punch tab 32 is part of a Printer frame 38 covered. On the attack members 36 of the Punching tabs 32, 34 grip not shown here Adjusting elements for adjusting the pressure bar vertically to the pressure level. At the longitudinal end of the pressure beam 10 Leg 28 of the carrier 14 has a guide groove 40 for receiving a part of the printer frame 38.
  • the legs 28, 30 of the carrier 14 are in Slotted guides, but only one of them Slot guide 42 is visible.
  • the slot guides 42 are attached to the printer frame 38.
  • the pressure bar 10 is in the slot guides 42 only in the direction of an arrow 44 slidable.
  • bearing blocks 46, 48 attached in which a parallel guide shaft 50th is rotatably mounted.
  • the bearing blocks 46, 48 are in Recesses 51 of the carrier 14 installed.
  • swivel arms 52 and 54 made of a low-abrasion plastic non-rotatably attached.
  • Each of the swivel arms 52, 54 is on a deformable locking fork 56 at its free end and 58.
  • the locking forks 56, 58 include a parallel to Pressure beam longitudinal direction of the shaft 60.
  • the shaft 60 is stored in the printer frame 38.
  • the swivel arms 52, 54 swing around the shaft 60. Since the swivel arms 52, 54 rotatably with the Parallel guide shaft 50 are connected Longitudinal ends of the pressure beam 10 always by the same amount adjusted, even if the feeler roller 22 is only in the area one of the two longitudinal ends is located.
  • One by the Pivotal movement of the locking forks 56, 58 around the shaft 60 evoked and perpendicular to the direction of arrow 44 Displacement is so small that it deviates from the tolerances the slot guides 42 and in the locking forks 56, 58 can be included.
  • FIG. 2 shows a side view of the pressure bar 10 the leg 30.
  • the bearing block 48 On the left side of the carrier 14 is the bearing block 48.
  • the bearing block 48 is on a snap hook 62 with which it can be inserted into the here not visible recess 51 of the carrier 14 (see Figure 1) is mounted.
  • a support surface 64 of the bearing block 48 lies directly on the outside of the carrier 14.
  • In the parallel guide shaft 50 becomes a bearing element 66 held.
  • the bearing block 48 has a on its underside Abutment 68, the carrier 14th with an inner edge 70th contacted.
  • a hook 72 closes on the right Side of the abutment 68.
  • the shaft 60 is on the right side of the Carrier 14 and is parallel to the parallel guide shaft 50 aligned.
  • the shaft 60 is on top of a first leg 74 and on the underside of one contacted second leg 76. Both legs 74, 76 form the locking fork 58 of the swivel arm 54.
  • the shaft 60 and the parallel guide shaft 50 are relative to the Carrier 14 arranged so that their longitudinal axes parallel and run in a plane perpendicular to the carrier 14.
  • the wave 60 and the two legs 74, 76 close one crescent-shaped space 78.
  • the head part 12 is located on the abutment surface 16 opposite side a spring retaining pin 80. This holds a spring 82, which supports the pressure beam 10 in a floating manner.
  • An arrow 84 indicates the direction of displacement of the Pressure bar 10 in the direction of that not shown here Printhead.
  • the invention makes a printer available posed with different record carriers with different thicknesses in the entire area Print line creates a uniform typeface.
  • the record carrier is always parallel to the Pressure level because of the parallel guidance of the pressure beam 10 a rocking of the abutment surface 16 is avoided. Especially when it comes to passbook printing Driving over the book edges, moving the Avoided record carrier.

Landscapes

  • Accessory Devices And Overall Control Thereof (AREA)
  • Printers Characterized By Their Purpose (AREA)
EP00117776A 1999-09-24 2000-08-18 Imprimante avec barre d'impression stabilisée flottante Withdrawn EP1086818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29916847U DE29916847U1 (de) 1999-09-24 1999-09-24 Drucker mit stabilisiertem schwimmend gelagerten Druckbalken
DE29916847U 1999-09-24

Publications (1)

Publication Number Publication Date
EP1086818A1 true EP1086818A1 (fr) 2001-03-28

Family

ID=8079390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117776A Withdrawn EP1086818A1 (fr) 1999-09-24 2000-08-18 Imprimante avec barre d'impression stabilisée flottante

Country Status (2)

Country Link
EP (1) EP1086818A1 (fr)
DE (1) DE29916847U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100078A1 (fr) * 2003-05-12 2004-11-18 Siemens Aktiengesellschaft Imprimante

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2522520B1 (fr) * 2011-05-09 2013-11-06 Wincor Nixdorf International GmbH Imprimante de matrice de point pour carnets de banque, reçus et similaires

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203072A (ja) * 1982-05-21 1983-11-26 Nec Corp シリアルプリンタ
EP0431925A1 (fr) * 1989-12-06 1991-06-12 Ncr International Inc. Imprimante comprenant un appareil de palier d'appui avec support d'impression
EP0505212A2 (fr) * 1991-03-21 1992-09-23 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Dispositif d'impression avec appui d'impression flottant
JPH08197790A (ja) * 1995-01-24 1996-08-06 Shinko Seisakusho Co Ltd プリンタのプラテン保持装置
US5816724A (en) * 1996-06-18 1998-10-06 International Business Machines Corporation Platen and printer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58203072A (ja) * 1982-05-21 1983-11-26 Nec Corp シリアルプリンタ
EP0431925A1 (fr) * 1989-12-06 1991-06-12 Ncr International Inc. Imprimante comprenant un appareil de palier d'appui avec support d'impression
EP0505212A2 (fr) * 1991-03-21 1992-09-23 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Dispositif d'impression avec appui d'impression flottant
JPH08197790A (ja) * 1995-01-24 1996-08-06 Shinko Seisakusho Co Ltd プリンタのプラテン保持装置
US5816724A (en) * 1996-06-18 1998-10-06 International Business Machines Corporation Platen and printer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 050 (M - 281) 7 March 1984 (1984-03-07) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 12 26 December 1996 (1996-12-26) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100078A1 (fr) * 2003-05-12 2004-11-18 Siemens Aktiengesellschaft Imprimante
DE10321225A1 (de) * 2003-05-12 2004-12-23 Siemens Ag Drucker
DE10321225B4 (de) * 2003-05-12 2005-03-03 Siemens Ag Drucker
CN1784697B (zh) * 2003-05-12 2010-10-13 西门子公司 打印机
US7993065B2 (en) 2003-05-12 2011-08-09 Siemens Aktiengesellschaft Printer having printing unit and movable media unit

Also Published As

Publication number Publication date
DE29916847U1 (de) 2000-03-02

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