EP0376418B1 - Dispositif d'alimentation en feuilles de papier pour machines de bureau, en particulier des imprimantes à matrice de points - Google Patents

Dispositif d'alimentation en feuilles de papier pour machines de bureau, en particulier des imprimantes à matrice de points Download PDF

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Publication number
EP0376418B1
EP0376418B1 EP89250107A EP89250107A EP0376418B1 EP 0376418 B1 EP0376418 B1 EP 0376418B1 EP 89250107 A EP89250107 A EP 89250107A EP 89250107 A EP89250107 A EP 89250107A EP 0376418 B1 EP0376418 B1 EP 0376418B1
Authority
EP
European Patent Office
Prior art keywords
rollers
paper cassette
paper
frame
sheets
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
EP89250107A
Other languages
German (de)
English (en)
Other versions
EP0376418A2 (fr
EP0376418A3 (fr
Inventor
Gerhard Lohrmann
Michael Dipl.-Ing. Setz (Fh)
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 AT89250107T priority Critical patent/ATE90914T1/de
Publication of EP0376418A2 publication Critical patent/EP0376418A2/fr
Publication of EP0376418A3 publication Critical patent/EP0376418A3/fr
Application granted granted Critical
Publication of EP0376418B1 publication Critical patent/EP0376418B1/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
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section

Definitions

  • the invention relates to a device for feeding single sheets in office machines, in particular in matrix printers, with a sheet stack and fixed take-off rollers resting thereon, which are driven in rotation, wherein a single sheet can be pulled off via separate corners of a paper receiving frame and the sheet stack between lateral paper guide frames and on a spring-loaded one Swivel plate lies.
  • Such stacks of sheets consisting of a hundred or more individual sheets can either be entered directly on the office machine in paper receptacles arranged for this purpose (DE-32 47 341 / US 4,613,124) or else by means of paper cassettes which can be used in existing guides and filled outside the office machine.
  • the difference between the two types of paper input is either to fill the sheet stack directly into the paper holding frame of the office machine or to insert it outside of the office machine first into a paper cassette and then insert it into the office machine. Both methods have advantages that either have a positive effect on the purchase price of the office machine or in the operation of the office machine.
  • the object of the present invention is to make the advantages of both types of sheet stacking usable for an office machine.
  • the stated object is achieved in that the swivel plate or a pair of swivel plates are in a first spaced position closer to the take-off rollers or in a more distant, second spaced position is pivotable and can be locked or unlocked in the second spacing position and that, when the second spacing position is set, an additional paper cassette consisting of a container with a resilient insert base can be inserted against the pivoting plate.
  • these measures solve the difficulty of achieving the correct distance to the take-off rollers and to the separation corners in relation to the sheet stack, both without and with an additional paper cassette, and in addition, despite different distances, also pressing the same size of a sheet stack to ensure the take-off rollers.
  • This advantageously enables the stack of sheets to be inserted in the respectively locked positions of the respective documents (swivel plate or additional paper cassette).
  • the advantage of a locked "pad” for the sheet stack to be inserted can be achieved in that a two-armed locking lever engages on the pivot plate, which is pivotably mounted on the device frame and which can be locked or unlocked with its second lever arm on the device frame.
  • a desired parallel adjustment of the swivel plate with one-sided arrangement of the locking lever mentioned can also be achieved in that on the swivel plate underside there is a swivel shaft extending over the width of the two lateral paper guide frames, at the ends of which gears are arranged in a rotationally fixed manner, each dimensioned in accordance with the swivel radius of the locking lever engage curved Zannstangen, which are assigned to the lateral paper guide frame, each having a cylindrical pivot shaft end is guided in an arcuate longitudinal guide of the locking lever.
  • An improvement of the invention is that the additional paper cassette has a resilient insert base and separate separation corners are arranged on the cassette frame and that the resilient insert base can be locked or unlocked.
  • the company's own separation corners replace those in the device.
  • the insertion and locking of the additional paper cassette is made even easier by the fact that lateral guides are provided on the additional paper cassette, which fix the inserted paper cassette at the same distance with which the separating corners of the paper guide frame are fixed to the circumference of the fixed take-off rollers.
  • the resilient insert base of the additional paper cassette is held in a filling position by means of a locking member and that when the additional paper cassette is inserted, the locking member can be unlocked so that the insert base rests with the sheet stack against the separating rollers and unlocks that by unlocking the locking lever, the full pressing force of the spring-loaded swivel plate or the swivel plate pair can be transferred to the take-off rollers.
  • the device shown is used to feed single sheets 1 in office machines 2, the like from matrix printers, thermal transfer printers, laser side printers and the like. consist.
  • the single sheets are introduced in the form of sheet stacks 3, and the sheet stacks 3 are in the operating position against fixed, rotationally drivable take-off rollers 4, which are in such a frictional connection with the first single sheet 1 on top of the sheet stack 3 that it separates from the next single sheet can be.
  • the take-off rollers 4 can be driven in rotation and, if desired, can also be reversed.
  • the respective single sheet 1 is driven by the take-off rollers 4 and thereby moved over separation corners 5 which are fastened to a paper holding frame 6 which is fixedly arranged on the device.
  • the paper receiving frame 6 has lateral paper guide frames 7a and 7b. If there is no other possibility, the sheet stack 3 rests on one or on two swivel plates 8 or 8a, 8b. Such Swivel plate 8 is normally only sprung and “swivelable" within the spring travel, ie otherwise rigidly arranged.
  • the swivel plate 8 or the swivel plate pair 8a, 8b can be swiveled into two spacing positions 9 or 10 and locked in the second spacing position 10. Accordingly, the travel of a spring 11 is large enough.
  • the second spacing position 10 is shown in broken lines in FIG. 2 in the locked position.
  • an additional paper cassette 12 can now be used, in which different types of paper or different format heights can be contained.
  • the additional paper cassette 12 consists of a container 13 with an insert base 14 resilient by a spring 13a. The container 13 is inserted against the swivel plate 8 (or 8a, 8b), starting from the position shown in FIG. 1.
  • a two-armed latching lever 15 now engages on the swivel plate 8 (8a, 8b), which is pivotably mounted on a device frame 2a by means of an axis 15a and which can be snapped onto the device frame 2a with its second lever arm 16 (FIG. 3).
  • the lever arm 16 forms a spring arm 17 which engages with a nose 18 in a latching recess 19.
  • a swivel shaft 21 extending over the width 20 of the two lateral paper guide frames 7a and 7b is provided in a guide housing 22.
  • gear wheels 23 are fixed in a rotationally fixed manner on the pivot shaft ends 21a.
  • the toothed wheels 23 mesh in an arcuate toothed rack 24, which are designed with a swivel radius 25 in accordance with the swivel movement of the swivel plate 8 (8a, 8b).
  • the pivot shaft ends 21a are also guided in longitudinal guides 26 which result from the movement path.
  • the first spacing position 9 of the swivel plate 8 (8a, 8b) is determined by the take-off rollers 4.
  • the additional paper cassette 12 with the resilient insert base 14 forms a cassette frame 29 with separate corners 30 relative to the paper receiving frame 6.
  • the resilient insert base 14 can be locked or unlocked.
  • lateral guides 31 are provided on the additional paper cassette 12. According to FIG. 4, these guides 31 (detail A in FIG. 1) are initially provided for maintaining a distance which the separating corners 5 of the paper guide frame 7a, 7b adhere to the circumference of the fixed take-off rollers 4. The separation corners 30 to the take-off rollers 4 should also have the same distance.
  • the additional paper cassette 12 with the resilient insert base 14 is operated when pushed in as follows:
  • the resilient insert base 14 is pivotally supported in the paper cassette 12 by means of a pivot bearing 32.
  • a rocker arm 33 locks in the prestressed position of the spring 13a (filling position).
  • the rocker arm 33 is over an axis 34 on a housing 36 for the pivot plate 8 swinging pivoted. He also carries a locking member 37 which is guided on a limited path length 35.
  • the rocker arm 33 strikes at 38 against the housing 36, so that the locking member 37 is unlocked, after which the spring 13a presses the insert base 14 with the sheet stack 3 which has been inserted in the meantime against the take-off rollers 4.
  • the force of the spring 11 is released and also presses the Swivel plate 8 (8a, 8b) with the cassette frame 29 against guide ribs 39 (Fig. 1).

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Ticket-Dispensing Machines (AREA)
  • Handling Of Cut Paper (AREA)

Claims (6)

  1. Dispositif pour l'amenée de feuilles individuelles (1) dans des machines de bureau (2), en particulier dans des imprimantes matricielles, comportant une pile de feuilles (3) et des rouleaux d'extraction fixes (4) reposant sur celle-ci, qui sont entraînés en rotation, une feuille individuelle (1) pouvant être extraite par l'intermédiaire de coins de séparation (5) d'un cadre de réception du papier (6), et la pile de feuilles (3) se trouvant entre des cadres latéraux de guidage du papier (7a,7b) et sur une plaque pivotante (8) suspendue sur ressort,
    caractérisé en ce que la plaque pivotante (8) ou une paire de plaques pivotantes (8a,8b) peut être pivotée dans une première position (9) plus proche des rouleaux d'extraction (4) ou dans une seconde position (10) plus éloignée, et peut être verrouillée ou déverrouillée dans la seconde position (10), et en ce que, lorsque la seconde position (10) est réglée, une cassette de papier additionnelle (12), constituée d'un réceptacle (13) ayant un fond élastique (14), peut être introduite en s'appuyant contre la plaque pivotante (8;8a,8b).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que, sur la plaque pivotante (8), s'engage un levier à cran (15) à deux bras, qui est monté pivotant sur le châssis (2a) du dispositif et qui, par son second bras (16), peut être encliqueté sur le châssis (2a) du dispositif, ou déverrouillé de celui-ci.
  3. Dispositif selon les revendications 1 et 2,
    caractérisé en ce que, sur le dessous (8c) de la plaque pivotante, se trouve un arbre pivotant (21) s'étendant sur la largeur (20) des deux cadres latéraux de guidage du papier (7a,7b), aux extrémités duquel sont agencées, de façon résistant à la torsion, des roues dentées (23) qui s'engagent, à chaque fois, dans des crémaillères (24) s'étendant en forme d'arc, dimensionnées de façon correspondant au rayon de pivotement (25) du levier (15), et qui sont associées aux cadres latéraux de guidage du papier (7a,7b), une extrémité cylindrique (21a) de l'arbre pivotant étant, à chaque fois, guidée dans un guide longitudinal arqué (26) du levier (15).
  4. Dispositif selon une ou plusieurs des revendications 1 à 3,
    caractérisé en ce que la cassette de papier additionnelle (12) présente un fond élastique (14) et, sur le cadre (29) de la cassette, des coins de séparation propres (30) sont agencés, et en ce que le fond élastique (14) peut être bloqué ou déverrouillé.
  5. Dispositif selon une ou plusieurs des revendications 1 à 4,
    caractérisé en ce que, sur la cassette de papier additionnelle (12), sont prévus des guides latéraux (31) qui fixent la cassette de papier (12) mise en place à la même distance que celle à laquelle sont fixés les coins de séparation (5) du cadre de guidage du papier (7a,7b) par rapport à la périphérie des rouleaux d'extraction fixes (4).
  6. Dispositif selon une ou plusieurs des revendications 1 à 5,
    caractérisé en ce que le fond élastique (14) de la cassette de papier additionnelle (12) est maintenu dans une position de remplissage au moyen d'un organe de verrouillage (37), et en ce que, lors de l'insertion de la cassette de papier additionnelle (12), l'organe de verrouillage (37) peut être déverrouillé, de sorte que le fond (14), avec la pile de feuilles (3), s'appuie, en étant déverrouillé, contre les rouleaux d'extraction (4), et en ce que, par déverrouillage du levier (15), toute la force de pressage de la plaque pivotante élastique (8) ou de la paire de plaques pivotantes (8a,8b) peut être transmise aux rouleaux d'extraction (4).
EP89250107A 1988-12-27 1989-12-05 Dispositif d'alimentation en feuilles de papier pour machines de bureau, en particulier des imprimantes à matrice de points Expired - Lifetime EP0376418B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89250107T ATE90914T1 (de) 1988-12-27 1989-12-05 Vorrichtung fuer die zufuehrung von einzelblaettern in bueromaschinen, insbesondere in matrixdruckern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3844325 1988-12-27
DE3844325A DE3844325A1 (de) 1988-12-27 1988-12-27 Vorrichtung fuer die zufuehrung von einzelblaettern in bueromaschinen, insbesondere in matrixdruckern

Publications (3)

Publication Number Publication Date
EP0376418A2 EP0376418A2 (fr) 1990-07-04
EP0376418A3 EP0376418A3 (fr) 1991-02-06
EP0376418B1 true EP0376418B1 (fr) 1993-06-23

Family

ID=6370527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250107A Expired - Lifetime EP0376418B1 (fr) 1988-12-27 1989-12-05 Dispositif d'alimentation en feuilles de papier pour machines de bureau, en particulier des imprimantes à matrice de points

Country Status (5)

Country Link
US (1) US5054759A (fr)
EP (1) EP0376418B1 (fr)
JP (1) JPH02249824A (fr)
AT (1) ATE90914T1 (fr)
DE (2) DE3844325A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH083397Y2 (ja) * 1991-05-24 1996-01-31 株式会社精工舎 給紙カセット
US5280900A (en) * 1993-01-04 1994-01-25 Stepper, Inc. Convertible metering hopper for thin single sheet and bulky multiple sheet articles
JP3371635B2 (ja) * 1995-08-28 2003-01-27 富士通株式会社 媒体ホルダー並びに媒体搬送装置
US6000870A (en) * 1996-10-14 1999-12-14 Brother Kogyo Kabushiki Kaisha Printing device having dual sheet feed trays
KR100509482B1 (ko) * 2002-12-23 2005-08-22 삼성전자주식회사 프린터의 급지장치
EP1698576B1 (fr) * 2005-03-02 2008-05-14 Sagem Communication Cassette pour l'alimentation en papier
US7909524B2 (en) * 2005-06-30 2011-03-22 Lexmark International, Inc. Folding edge guide assembly for an imaging apparatus
US9283784B2 (en) * 2012-04-02 2016-03-15 Toshiba Tec Kabushiki Kaisha Printer

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023792A (en) * 1971-12-08 1977-05-17 Xerox Corporation Sheet feeding apparatus
JPS5126069B2 (fr) * 1972-03-10 1976-08-04
JPS5552833A (en) * 1978-10-14 1980-04-17 Canon Inc Cassette loader
US4345834A (en) * 1978-11-02 1982-08-24 Mita Industrial Company Limited Transfer type electrostatic copying apparatus
JPS5593743A (en) * 1978-12-29 1980-07-16 Ricoh Co Ltd Paper feeder with sheet containing cassette
JPS55140437A (en) * 1979-04-17 1980-11-01 Canon Inc Sheet feeder
JPS6134363Y2 (fr) * 1980-08-18 1986-10-07
JPS5748541A (en) * 1980-09-08 1982-03-19 Ricoh Co Ltd Paper feeding cassette
US4406448A (en) * 1981-07-24 1983-09-27 Pitney Bowes Inc. Paper cassette
US4558858A (en) * 1982-10-12 1985-12-17 Ruenzi Kurt Sheet supply apparatus for typewriters, having slewing rollers engaging a platen roll, and method
DE3247341A1 (de) * 1982-12-17 1984-06-20 Mannesmann AG, 4000 Düsseldorf Vorrichtung fuer die zufuehrung einzelner blaetter von einem blattstapel
US4540297A (en) * 1983-02-01 1985-09-10 Brother Kogyo Kabushiki Kaisha Paper holding, feeding and inserting apparatus for a printer using different kinds of sheets
JPS6056744A (ja) * 1983-09-09 1985-04-02 Canon Inc 自動給紙装置
JPS6071429A (ja) * 1983-09-26 1985-04-23 Ricoh Co Ltd シ−ト載置装置
US4540169A (en) * 1983-10-03 1985-09-10 Xerox Corporation Cassette sheet feed apparatus
JPS6087139A (ja) * 1983-10-17 1985-05-16 Minolta Camera Co Ltd 給紙装置
JPS60106749A (ja) * 1983-11-11 1985-06-12 Canon Inc 画像形成装置
JPS61119529A (ja) * 1984-11-13 1986-06-06 Tokyo Electric Co Ltd 事務機の給紙装置
JPS61225082A (ja) * 1985-03-29 1986-10-06 Canon Inc 給紙装置
JPS6231624A (ja) * 1985-08-05 1987-02-10 Canon Inc シ−ト給送装置
DE3535802A1 (de) * 1985-10-08 1987-04-09 Helmut Steinhilber Vorrichtung zum vereinzeln von einzelblaettern unterschiedlicher steifigkeit
JPH0674097B2 (ja) * 1985-11-08 1994-09-21 ブラザー工業株式会社 プリンタの給紙装置
US4714243A (en) * 1986-01-28 1987-12-22 Ziyad Incorporated Paper tray for a printing device
DE8625123U1 (de) * 1986-09-19 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Einlegen eines Papierstapels in eine Papiervorratskassette
US4765605A (en) * 1986-11-24 1988-08-23 International Business Machines Corporation Paper cassette tray with front edge positioning cams

Also Published As

Publication number Publication date
US5054759A (en) 1991-10-08
ATE90914T1 (de) 1993-07-15
EP0376418A2 (fr) 1990-07-04
DE3844325A1 (de) 1990-06-28
JPH02249824A (ja) 1990-10-05
EP0376418A3 (fr) 1991-02-06
DE58904795D1 (de) 1993-07-29

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