EP0310731B1 - Dispositif d'avance de support d'information pour imprimante matricielle - Google Patents

Dispositif d'avance de support d'information pour imprimante matricielle Download PDF

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Publication number
EP0310731B1
EP0310731B1 EP87730123A EP87730123A EP0310731B1 EP 0310731 B1 EP0310731 B1 EP 0310731B1 EP 87730123 A EP87730123 A EP 87730123A EP 87730123 A EP87730123 A EP 87730123A EP 0310731 B1 EP0310731 B1 EP 0310731B1
Authority
EP
European Patent Office
Prior art keywords
rollers
pairs
platen
bearing frame
bearing
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
Application number
EP87730123A
Other languages
German (de)
English (en)
Other versions
EP0310731A1 (fr
Inventor
Erich Steppe
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 AG filed Critical Mannesmann AG
Priority to DE8787730123T priority Critical patent/DE3779757D1/de
Priority to AT87730123T priority patent/ATE77067T1/de
Priority to EP87730123A priority patent/EP0310731B1/fr
Priority to US07/256,049 priority patent/US4936696A/en
Publication of EP0310731A1 publication Critical patent/EP0310731A1/fr
Application granted granted Critical
Publication of EP0310731B1 publication Critical patent/EP0310731B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/02—Rollers
    • B41J13/036—Rollers co-operating with a roller platen
    • B41J13/048—Front and rear rollers both mounted on a common carrier
    • B41J13/054—Front and rear rollers both mounted on a common carrier on the paper apron concentric with the roller platen
    • 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
    • B41J11/48—Apparatus for condensed record, tally strip, or like work using two or more papers, or sets of papers, e.g. devices for switching over from handling of copy material in sheet form to handling of copy material in continuous form and vice versa or point-of-sale printers comprising means for printing on continuous copy material, e.g. journal for tills, and on single sheets, e.g. cheques or receipts

Definitions

  • the invention relates to a device for transporting record carriers in printers, in particular in matrix printers, in which single sheets or alternately endless webs with and without edge perforation can be processed, with a writing abutment being assigned a pair of tractors for endless webs and driven and non-driven pressure rollers or pressure roller pairs, the groups of Form roles that are adjustable by means of a common adjusting member from a rest position to an operating position or vice versa.
  • Such paper transport devices serve the purpose of a full support on the print abutment and thus also a line-precise feed, the feed when inserting and removing must take into account the detection of the end of a paper web or a single sheet or a copy set (form set).
  • Paper transport devices which can be used for continuous webs and single sheets at the same time are known (EP-A2-0 099 120).
  • This known paper transport device consists of a mounting assembly that transports single sheets in a lying position with the tractors for continuous webs perforated at the edge and in a vertical position of the mounting assembly.
  • an attachable transport device on the attachment module itself. Modules that can be placed in this way cannot be manufactured and assembled with sufficient accuracy and require impermissibly large tolerance values.
  • additional components are required, so that this design causes great effort and thus high costs.
  • the high assembly costs are also disadvantageous.
  • a device for transporting single sheets or endless webs is also known (US-A1-4,500,023) with roller groups which can be put into a rest position and an operating position.
  • a role group consists of several coaxial roles, i.e. each of several roles, each of which is arranged on one axis.
  • one roller group can be set in the operating position and another roller group in the rest position for the transport of endless webs on the circumference of the printing roller due to the known device.
  • both roll groups are in the operating position. The constructive design of the roll holder is not described and it is also not clear how these roll groups are to be assembled.
  • Another known device for transporting paper in printers serves primarily to facilitate the introduction of the paper around a printing roller.
  • several individual roller groups are arranged on an adjusting member, with one roller group consisting of rollers arranged in pairs on the circumference of the pressure roller.
  • one roller group consisting of rollers arranged in pairs on the circumference of the pressure roller.
  • either the front or the rear roller can be placed against the pressure roller.
  • neither the front nor the rear roll press the paper against the print roller.
  • a simultaneous pressing of both roles is obviously not provided.
  • the invention is therefore based on the object of a device for transporting different recording media (perforated continuous paper webs, non-perforated continuous webs, single sheets, Copy sets, form sets) with a minimum of parts, whereby the assembly effort must also be taken into account.
  • the object is achieved in a device of the type mentioned in the invention in that several pressure roller groups each consisting of a plurality of roller pairs are provided, that each pressure roller group is arranged on its own bearing frame and that the bearing frames are adjustable perpendicular to the axis of the platen roller, the bearing frames can be inserted and locked or unlocked and removed when the platen roller is removed from the printer frame through openings in the printer frame.
  • Such a device is the simplest solution to feed, advance, i.e., punch perforated endless webs, non-perforated endless webs, single sheets, copy sets and form sets. to be able to process overall.
  • the effort provided for this only includes a pressure roller group integrated into the office machine or the printer, which can be switched on and off.
  • a pin-shaped cylindrical abutment (platen roller) can advantageously be assigned this pinch roller group on the circumference in such a way that the transfer of the single sheets or paper webs can take place with a full support on the abutment. In this case, the guiding and pushing or tensile forces are separated such that the pressure roller group has only non-driven roller pairs.
  • the system can therefore be used particularly advantageously in printer designs in which the platen roller with its bearings can be easily expanded.
  • the common adjusting member consists of a rotatable D-axis mounted in the side plates of the printer frame, each of which is provided by recesses in the bearing frame runs.
  • a non-positive and / or positive assignment of the D axis to these recesses does not require large tolerances and is therefore particularly cost-effective to manufacture and assemble.
  • an adjusting lever connected to the D-axis is provided on the outside of the side plate, the pin-shaped end of which is guided in an obliquely upwardly extending recess.
  • the obliquely upward recess allows the D-axis to be raised and lowered when the adjustment lever is pivoted.
  • Another improvement of the invention is that the individual pairs of rollers are supported in the bearing frame by means of a flat spring through openings in the upper side of the bearing frame radially compliant.
  • the printer frame 1 consists of the side boards 2 and 3 and a connecting piece 4, which also forms one side of a paper guide channel.
  • the connecting piece 4 is curved because a circular cylindrical platen 6 is provided as the abutment 5.
  • the platen roller 6 is hung on the journal 7 by means of axle holders 8 in associated bearing cutouts 9. The assembly movement during hanging is shown by dash-dotted lines 10.
  • driven pressure roller pairs are used for endless tracks instead of the driven transport rollers 12 shown.
  • the drive takes place via a gear wheel 13 on the axis of rotation of the platen roller 6, which is itself driven by an electric motor (not shown).
  • the gear 13 rotates a further gear 14 on the shaft 15, which is rotatably mounted in a cover 16 and carries a plurality of transport rollers 12, which are opposed in the cover 16, non-driven, radially resilient counter-rollers 17.
  • the tractor pair 11 is adjustable on an axis 18 and a drivable shaft 19 to the width of the endless track 20.
  • a print head carriage 22 with a print head 23 can be moved in parallel in front of the writing abutment 5.
  • the drive for the pair of tractors 11 is switched on, so that the endless web 20 passes the arched connecting piece 4 and passes around the platen roller 6 in front of the print head 23, is labeled there and then by the transport rollers 12 and the counter rollers 17 are conveyed from the office machine.
  • pinch roller groups 24 and 25 which each have several pairs of rollers 26.
  • Each of the pressure roller groups 24 and 25 is mounted on a separate bearing frame 27 (made of plastic) which is adapted to the curvature of the connecting piece 4. All bearing frames 27 are adjusted from a rest position into an operating position or vice versa parallel to the platen roller 6 by a common adjusting member 28. 2, the bearing frames 27 are in their rest position and therefore do not exert any frictional forces on the endless track 20.
  • the adjusting member 28 is now actuated, whereby a single sheet 29 is pressed through the single sheet shaft 30 via the frictional forces of the roller pairs 26 onto the platen roller 6.
  • the bearing frame 27, its actuating means and its assembly are described in more detail below. 1 shows, the bearing frames 27 are inserted into openings 31 when the platen roller 6 is removed from the printer frame 1. Of course, during the initial assembly, the mounting of the bearing frame 27 can take place before the platen roller 6 is installed.
  • the common adjusting member 28 is formed by a D-axis 28a, which run through recesses 32.
  • the bearing frame 27 forms these recesses 32 through left and right of the D-axis 28a on web walls 33 vertically extending guide rails 34 and 35.
  • the D-axis 28a is connected to an adjusting lever 36.
  • the actuating lever 36 has a peg-shaped end 36a which is guided in a recess 37 which runs obliquely upwards.
  • the D axis 28a itself is guided in elongated holes 38 in the side plates 2 and 3, in which the D cross section slides to different heights, ie to a lower layer according to FIG. 2 and to an upper layer according to FIG. 3.
  • the individual pairs of rollers 26 are rotatably supported by means of a flat spring 39 projecting through openings 40 in such a way that they protrude radially resiliently on the upper bearing frame side 27a and can be installed or removed together with the bearing frame 27 as a unit (FIG. 1).
  • the web walls 33 in this case carry latching arms 41 (FIG. 1) which can be resiliently pivoted transversely to the guide direction of the print head carriage 22.
  • roller pairs 26 After installation of the bearing frame 27, the roller pairs 26 are pressed against the platen roller 6 with uniform force distribution on all rollers. Unevenness and different thicknesses in the paper as well as concentricity tolerances of the platen roller 6 and the roller pairs 26 are compensated for by the resilient inherent movement of the roller pairs 26. The roller axes remain parallel to the platen roller 6.

Landscapes

  • Handling Of Sheets (AREA)
  • Advancing Webs (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)

Claims (4)

  1. Dispositif d'avance de supports d'information pour imprimantes, en particulier pour imprimantes matricielles, dans lequel des feuilles individuelles ou, alternativement, des bandes continues (20) avec et sans perforations marginales peuvent être traitées, à un support d'impression (5) étant affectés une paire d'éléments de traction (11) pour les bandes continues (20) et des galets de pression (12) et, respectivement, des paires de galets de pression (12, 17 ; 24, 25) entraînés et non entraînés formant des groupes de galets qui, au moyen d'un organe de déplacement commun (28), peuvent être amenés d'une position de repos dans une position de fonctionnement ou inversement, caractérisé en ce que plusieurs groupes e galets de pression (24, 25) constitués chacun de plusieurs paires de galets (26) sont prévus, en ce que chaque groupe de galets de pression (24, 25) est monté sur son propre cadre de support (27), et en ce que les cadres de support (27) peuvent être déplacés perpendiculairement à l'axe du rouleau d'impression (6), chacun des cadres de support (27) pouvant être monté et encliqueté ou, respectivement, déverrouillé et déposé par des ouvertures (31) du châssis d'imprimante (1) lorsque le rouleau d'impression (6) est déposé du châssis d'imprimante (1).
  2. Dispositif conforme à la revendication 1, caractérisé en ce que l'organe de déplacement commun (28) est constitué d'un axe rotatif en forme de D (28a) qui est logé dans les platines latérales (2, 3) du châssis d'imprimante (1) et qui traverse des évidements (32) des cadres de support.
  3. Dispositif conforme à une ou plusieurs des revendications 1 et 2, caractérisé en ce qu'il est prévu, sur la face extérieure de la platine latérale (2, 3), un levier de réglage (36) qui est relié à l'axe en forme de D (28a) et dont l'extrémité en forme de tourillon (36a) est logée dans un évidement (37) incliné vers le haut.
  4. Dispositif conforme aux revendications 1 à 3, caractérisé en ce que, dans le cadre de support (27), les différentes paires de galets (26) sont montées de manière à dépasser à travers des ouvertures (40) de la face supérieure (27a) du cadre de support et à s'effacer radialement au moyen d'un ressort à lame (39).
EP87730123A 1987-10-08 1987-10-08 Dispositif d'avance de support d'information pour imprimante matricielle Expired - Lifetime EP0310731B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8787730123T DE3779757D1 (de) 1987-10-08 1987-10-08 Vorrichtung zum transportieren von aufzeichnungstraegern in druckern, insbesondere in matrixdruckern.
AT87730123T ATE77067T1 (de) 1987-10-08 1987-10-08 Vorrichtung zum transportieren von aufzeichnungstraegern in druckern, insbesondere in matrixdruckern.
EP87730123A EP0310731B1 (fr) 1987-10-08 1987-10-08 Dispositif d'avance de support d'information pour imprimante matricielle
US07/256,049 US4936696A (en) 1987-10-08 1988-10-11 Roller device for transporting recording supports in printers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87730123A EP0310731B1 (fr) 1987-10-08 1987-10-08 Dispositif d'avance de support d'information pour imprimante matricielle

Publications (2)

Publication Number Publication Date
EP0310731A1 EP0310731A1 (fr) 1989-04-12
EP0310731B1 true EP0310731B1 (fr) 1992-06-10

Family

ID=8198366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87730123A Expired - Lifetime EP0310731B1 (fr) 1987-10-08 1987-10-08 Dispositif d'avance de support d'information pour imprimante matricielle

Country Status (4)

Country Link
US (1) US4936696A (fr)
EP (1) EP0310731B1 (fr)
AT (1) ATE77067T1 (fr)
DE (1) DE3779757D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2782728B2 (ja) * 1988-09-06 1998-08-06 セイコーエプソン株式会社 プリンタの紙送り装置
JPH0636931Y2 (ja) * 1988-11-15 1994-09-28 株式会社精工舎 プリンタの紙送り機構
DE3939506A1 (de) * 1989-05-22 1990-11-29 Mannesmann Ag Einrichtung fuer den papiertransport in druckern, insbesondere in matrixdruckern
US5356295A (en) * 1993-03-08 1994-10-18 Grosz Claudia M Anatomical teaching tool and method for teaching anatomy
US6435746B2 (en) * 1997-03-12 2002-08-20 Encad, Inc. Pinch roller for inkjet printer
US5938356A (en) * 1997-03-12 1999-08-17 Encad, Inc. Pinch roller for inkjet printer
JP4995932B2 (ja) * 2010-03-12 2012-08-08 株式会社沖データ 印刷装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1004569A (en) * 1907-11-30 1911-10-03 Royal Typewriter Co Inc Writing-machine.
US1207628A (en) * 1914-03-30 1916-12-05 Woodstock Typewriter Co Paper-feed mechanism.
US1182352A (en) * 1914-09-09 1916-05-09 Underwood Typewriter Co Type-writing machine.
US1496876A (en) * 1920-12-13 1924-06-10 O D Jennings & Company Combined paper-feed and finger-releasing mechanism
US1988189A (en) * 1931-09-23 1935-01-15 Underwood Elliott Fisher Co Typewriting machine
US2026020A (en) * 1932-01-02 1935-12-31 Ncr Co Carriage for accounting machines
US2328146A (en) * 1941-08-08 1943-08-31 L C Smith & Corona Typewriters Typewriting machine
DE971816C (de) * 1950-11-28 1959-04-02 Adlerwerke Kleyer Ag H Papierfuehrung an Bueromaschinen, insbesondere Schreibmaschinen
US2807347A (en) * 1954-01-12 1957-09-24 Standard Register Co Strip feeding mechanism
US4215945A (en) * 1978-12-26 1980-08-05 International Business Machines Corporation Paper feeding apparatus
EP0026890A3 (fr) * 1979-10-09 1982-10-20 Teletype Corporation Mécanisme d'avance pour feuilles de papier dans une imprimante
US4486108A (en) * 1980-11-06 1984-12-04 Ricoh Company Ltd. Semi-automatic paper insertion apparatus
JPS5829446U (ja) * 1981-08-20 1983-02-25 セイコーエプソン株式会社 プリンタの紙送り装置
US4364683A (en) * 1981-12-23 1982-12-21 International Business Machines Corporation Paper feed roller assembly for a typewriter or printer
DE3226510C2 (de) * 1982-07-15 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Universelle Papiertransporteinrichtung für Einzelblätter und Endlospapier in Zeilendruckeinrichtungen
JPS59104971A (ja) * 1982-12-09 1984-06-18 Canon Inc プリンタ
JPS59209165A (ja) * 1983-05-13 1984-11-27 Yokogawa Hokushin Electric Corp 記録装置
US4592670A (en) * 1984-06-29 1986-06-03 International Business Machines Corporation Angular motion paper feed release system
JPS62193862A (ja) * 1986-02-21 1987-08-26 Tokyo Electric Co Ltd 用紙送り装置

Also Published As

Publication number Publication date
ATE77067T1 (de) 1992-06-15
EP0310731A1 (fr) 1989-04-12
DE3779757D1 (de) 1992-07-16
US4936696A (en) 1990-06-26

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