EP0241358B1 - Schreibmaschine mit Vorrichtung zur wahlweisen Zufuhr von Einzelblättern aus zwei Papiermagazinen - Google Patents

Schreibmaschine mit Vorrichtung zur wahlweisen Zufuhr von Einzelblättern aus zwei Papiermagazinen Download PDF

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Publication number
EP0241358B1
EP0241358B1 EP87400727A EP87400727A EP0241358B1 EP 0241358 B1 EP0241358 B1 EP 0241358B1 EP 87400727 A EP87400727 A EP 87400727A EP 87400727 A EP87400727 A EP 87400727A EP 0241358 B1 EP0241358 B1 EP 0241358B1
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EP
European Patent Office
Prior art keywords
wheel
trays
sheets
arm
extraction
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
EP87400727A
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English (en)
French (fr)
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EP0241358A1 (de
Inventor
Jean-Pierre Deschamps
Benoît BIZET
Jean-Michel Ciccone
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.)
Sagem SA
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Sagem SA
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Publication date
Application filed by Sagem SA filed Critical Sagem SA
Publication of EP0241358A1 publication Critical patent/EP0241358A1/de
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Publication of EP0241358B1 publication Critical patent/EP0241358B1/de
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/44—Simultaneously, alternately, or selectively separating articles from two or more piles

Definitions

  • the present invention relates to improvements made in the printing sheet feeding part of a printing machine, and more particularly to the invention relates to a printing master comprising a removable unitary modular device for feeding sheets of printing medium.
  • printing comprising: at least two removable loading trays; extraction means, driven by a single main motor, for extracting the sheets from one of the trays and propelling them in the machine towards printing means; selection means for selectively cooperating the extraction means with one of these tanks; and movement sampling means which are able to cooperate by simple contact with a rotating member forming part of the mechanism for driving the sheets in front of the printing means and driven by the aforesaid main motor located outside the supply device, in the remaining part of the printing machine, and which are further arranged to transmit this movement inside the device; the aforesaid selection means comprising movement distributing means associated with said movement taking and transmission means for directing the movement towards the sheet extraction means from the selected tray.
  • the systems for extracting sheets from the loading trays and for selecting the appropriate tray are, in these known machines, driven by an electric motor which is specific to them, that is to say which is different from the feed motors of the sheets and printing in particular; the motor with two directions of rotation is associated with a transmission train including two free wheels so as to selectively drive the rollers for extracting the sheets or loosening rollers respectively in the two tanks.
  • the motor used has a very high speed of rotation, which means that the movement transmission pinions also rotate quickly, hence the generation of significant noise; in addition, the pinions, to be sufficiently resistant, must be metallic, which increases their cost and, taking account of the high rotational speeds, they must be mounted on ball bearings or the like, resulting in an additional increase in costs.
  • Document GB-A 2 132 591 presents a modular unitary removable sheet feeding device comprising several trays and arranged as indicated in the preamble.
  • the power take-off on the leaf drive mechanism and the selection of the feed tray calls for complex mechanical means including clutches and large gear trains. These organs are generally subject to wear and require constant maintenance.
  • the object of the invention is essentially to remedy the drawbacks presented by known printing machines, and to arrange the selective sheet feeding device so as to reduce its cost and make it more silent to operate.
  • the invention also proposes to take advantage of this arrangement to improve access to the various organs of the selective sheet feeding device, or even to the organs of the rest of the printing machine, so that maintenance and possible replacement of parts they are facilitated, simplified and therefore less expensive.
  • the arrangement in accordance with the invention makes it possible to dispense with a specific motor for picking up the sheets from the loading trays, hence a new source of significant savings.
  • the arrangement of the device in the form of a removable module provides, after extraction thereof from the printing machine, greater ease of access to the mechanisms and simplifies the maintenance work. A damaged device can be immediately replaced and the machine is thus only immobilized for a short time. In addition, maintenance of the rest of the printing machine can be facilitated, since the extraction of the module provides easy access to the other internal organs. Finally, this arrangement multiplies the working possibilities of the machine, because it is possible to provide modules of different types, equipped for example for sheets of particular format and / or composition.
  • the necessary movement is taken from a rotating member forming part of the mechanism for moving the sheets line by line during printing and that the aforementioned main drive motor is the interlining animating this mechanism: in fact, such a motor rotates very slowly (for example 1 revolution per second) and the drive mechanism can then be produced using pinions and plastic parts, obtained by molding, and therefore inexpensive; moreover, the assembly operates with an extremely low noise level; so, this uniqueness of the motor means for extracting the sheets from the trays and the displacement of the sheets being printed in front of the printing means leads to a synchronization of the advance of the sheets throughout their journey from the storage tray until it leaves the printer after printing.
  • the movement sampling means can cooperate by simple contact and without precise adjustment with the rotating member secured to the motor makes the positioning tolerances of the module in the printing machine less critical.
  • the distributing means comprise a pendulum supported in rotation coaxially with the articulation axis of the arm and carrying at least one satellite wheel which interacts with a driven wheel, integral with the pulley for supporting the endless link coaxial with the axis of articulation of the arm and which is capable of coming into contact selectively with one or the other of the means for extracting sheets from the trays.
  • the motor means for controlling the balance comprises a drive member coupled to the pivoting balance and an electric motor whose output shaft cooperates in rotation with the edge in an arc of a circle of the balance drive member.
  • the balance advantageously supports two satellite wheels capable of cooperating selectively with the sheet extraction means associated respectively with the two trays and the electric motor is controllable in both directions of rotation for cause the pendulum to cooperate respectively with one or the other bin.
  • FIGS. 1 and 2 there is shown a part (generally the rear part or a side part) of a printing machine 1 shown by its cover 2, the part considered of the machine being the one where the supply of printing sheets (for example sheets of paper) is located.
  • the motor 3 or line spacing motor intended to move a sheet (not visible) in front of line by line printing means (not shown), as well as a toothed wheel 4 wedged on the axis of this engine.
  • the rear or lateral face 5 of the cowling 2 is removable in order to allow passage (installation or extraction) to a device 6 for feeding sheets formed in the form of a removable module.
  • the device 6 is arranged to support, in any manner known per se for this purpose, two trays 7 superimposed and loaded with sheets 8, the trays being removable through corresponding openings on the face 5. Above each tray is located a roller or unwinding wheel 9, wedged on an axis 10 driven in rotation, which extracts the sheet 8 located on top of the corresponding stack.
  • the device 6 is provided with an arm 11, partially projecting outside, which, at its internal end (right end in fig. 2), is pivotally mounted on an axis 12. At its other end (end on the left in Fig. 2), the arm 11 carries a toothed wheel 13 capable of cooperating with the toothed wheel 4 driven by the motor 3.
  • an endless link such as a toothed belt 14, is supported d 'one side by a pulley 15 coaxial with the wheel 13 and integral in rotation with the latter, and by a pulley 16 turning madly on the axis 12 of the opposite end of the arm.
  • a toothed wheel 17 is mounted on the axis 12 and is integral in rotation with the pulley 16.
  • a balance 18 is also supported for free rotation on the axis 12, this balance having the shape of a circular sector centered on axis 12 and supporting at its two ends two toothed wheels idlers or satellite wheels 19 meshing with the toothed wheel 17.
  • the circular periphery, or part of it, of the balance 18 is toothed (at 20) to cooperate with a toothed wheel 21 driven by a motor 22 with two directions of rotation controlled by an appropriate selection means (change-over switch) not shown.
  • the toothed wheel 13 carried by the external end of the arm 11 is held in abutment against the driving toothed wheel 4 under the action of an elastic return force due to a spring 23 interposed between the arm 4 and a fixed part of the device. The movement is thus transmitted to the toothed wheels 19 which are continuously driven.
  • the selection of the upper or lower tray 7 is carried out by controlling the appropriate direction of rotation of the selection motor 22 which drives the balance 18; for example in the direction of arrow 24, as shown in the figures, to bring the upper toothed wheel 19 into contact with a toothed wheel 25 wedged on the upper shaft 10 (the lower toothed wheel 19 then being released from the toothed wheel 25 wedged on the lower shaft 10): it is then the sheets 8 of the upper tray which are delivered to the printing machine during printing.
  • the selection of the lower tray is carried out by reversing the direction of rotation of the motor 22 so as to release the upper wheels 25 and 19 and to make the lower wheels 25 and 19 cooperate.
  • a return spring 26 is associated with the balance 18 to return the latter to the neutral position in the absence of control of the selection motor 22: the wheels 25 and 19 both lower and upper no longer cooperate.
  • the toothed wheel 21 of the motor 22 acts on the balance 18 ', not directly, but by means of a pivoting drive member 27.
  • the member 27 is shaped in a circular sector mounted freely on its central axis 28 and meshing, by its toothed edge in an arc of a circle 20, with the driving wheel 21.
  • the drive member 27 carries a finger 29 projecting laterally and engaged in a elongated light 30 of a part opposite the pendulum 18 '.
  • the member 27 is provided with stop studs 31 projecting laterally, capable of coming against corresponding fixed stops 32 (for example carried by the frame).
  • a stop 33 erasable against a return force due to a spring 34, can engage in a notch 35 of the drive member 27 to materialize the neutral position (position shown in fig. 3).
  • the arrangement is such that the pivot axis 12 of the arm 11, the pivot axis 28 of the drive member 27, and the axis of the toothed wheel 21 are aligned, l finger axis 29 is also located in this alignment in the neutral position of the device.
  • the rotation of the wheel 21 causes the pivoting of the member 27 which, in turn, by means of the finger 29 engaged in the slot 30, causes the rocker to tilt 18 'in the appropriate direction.
  • the reaction forces to which the balance 18 'is subjected are taken up and compensated by the drive member 27, and the motor 22 then only has to provide a relatively low holding torque, allowing the use of a low power motor.
  • an elastic return arm 11 ensures effective cooperation of the toothed wheels 4 and 13, whatever the longitudinal positioning (within a certain range) of the device 6 relative to the motor 3, which makes the tolerances of said positioning.
  • this arrangement makes it possible to save on the engine traditionally used for extracting the sheets from the trays.
  • this arrangement provides synchronization of the advance of the sheets both when they are extracted from the tray and when they pass in front of the printing means of the printing machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (5)

1. Drucker (1) mit einer einheitlichen modularen, entfernbaren Blattzufuhrvorrichtung (6),
mit wenigstens zwei entfernbaren Blattmagazinen (8),
mit von einem einzigen Hauptmotor (3) angetriebenen Blattauszugsmitteln zum Herausziehen der Blätter aus einem Magazin und zum Vorbringen der Blätter zu der Druckeinrichtung in dem Drucker, mit Auswahlmitteln, die ein wahlweises Zusammenarbeiten der Blattauszugsmittel mit jeweils einem der Magazine bewirken,
sowie mit Mitteln (11-17) zur Bewegungsabzapfung, die durch einfache Berührung mit einem Drehorgan (4) zusammenwirken können, das Bestandteil der Mittel zum Fördern der Blätter vor die Druckeinrichtung ist und seinerseits von dem außerhalb der Blattzufuhrvorrichtung in dem verbleibenden Teil des Druckers angeordneten Hauptmotors (3) angetrieben wird, wobei diese Mittel zur Bewegungsabzapfung außerdem so angeordnet sind, daß sie die Bewegung in das Innere der Vorrichtung übertragen, und wobei den Mitteln (11-17) zur Bewegungsabzapfung und -übertragung Verteilermittel (18, 19) zur Bewegungsverteilung zugeordnet sind, die die Bewegung zu den genannten Blattauszugsmitteln zum Herausziehen der Blätter aus dem ausgewählten Magazin leiten, dadurch gekennzeichnet, daß die Mittel zur Bewegungsabzapfung und -übertragung folgende Teile umfassen:
- einen Arm (11), der zumindest teilweise aus der Vorrichtung nach außen ragt,
- ein von dem freien Ende des Arms getragenes Rad (13) zur Bewegungsabzapfung, das mit dem Drehorgan (4) des Mechanismus zum Vorbringen der Blätter in den Drucker zusammenwirken kann,
- ein endloses Band (14), das von zwei Riemenscheiben (15, 16) oder ähnlichen Elementen getragen ist, von denen die eine (15) zu dem Rad (13) zur Bewegungsabzapfung koaxial und mit diesem drehfest verbunden ist, und von denen das andere (16) zu der Gelenkachse des Arms (11) an der Vorrichtung koaxial ist,
- sowie dem Arm zugeordnete elastische Rückholmittel (23), die so angeordnet sind, daß das Rad zur Bewegungsabzapfung elastisch gegen das Drehorgan gedrückt wird,
und daß Antriebsmittel (22) vorgesehen sind, mit denen die genannten Mittel zur Bewegungsverteilung so steuerbar sind, daß sie wenigstens drei Positionen annehmen können, nämlich wenigstens zwei Arbeitspositionen, in denen sie selektiv mit den jeweiligen Blattauszugsmitteln zum Herausziehen der Blätter aus den Magazinen zusammenwirken, und eine neutrale Position, in der sie mit keinem dieser Auszugsmittel zusammenwirken.
2. Drucker nach Anspruch 1, dadurch gekennzeichnet, daß die Verteilermittel eine zur Gelenkachse (12) des Arms (11) koaxiale, drehbar gelagerte Schwinge (18) aufweisen, die wenigstens ein Satellitenrad (19) trägt, das mit einem angetriebenen Rad (17) zusammenwirkt, das mit derjenigen (16) der den endlosen Riemen tragenden Riemenscheiben fest verbunden ist, die zu der Gelenkachse des Arms koaxial ist, das selektiv mit einem der Blattauszugsmittel zum Herausziehen der Blätter aus den Magazinen in Kontakt bringbar ist.
3. Drucker nach Anspruch 2, dadurch gekennzeichnet, daß die Antriebsmittel für die Schwinge ein Mitnehmerorgan (27) umfassen, das mit der Schwinge (18') gekuppelt ist und als schwenkbares Kreissektorteil ausgebildet ist, sowie einen Elektromotor (22), dessen Ausgangswelle mit dem kreisbogenförmigen Rand des Mitnehmerorgans der Schwinge zusammenwirkt, um diese zu drehen.
4. Drucker nach Anspruch 3, bei dem die Blattzufuhrvorrichtung zwei Magazine aufweist, dadurch gekennzeichnet, daß die Schwinge zwei Satellitenräder (19) für die selektive Zusammenarbeit mit den den beiden Magazinen einzeln zugeordneten Blattauszugsmitteln trägt, und daß der Elektromotor (22) in beide Drehrichtungen steuerbar ist, um das Zusammenwirken der Schwinge mit dem einen bzw. dem anderen Magazin herbeizuführen.
5. Drucker nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die elastischen Rückholmittel (26, 34) die Verteilermittel in ihre neutrale Stellung zurückführen, wenn ihre Antriebsmittel (22) nicht in Aktion sind.
EP87400727A 1986-04-08 1987-04-02 Schreibmaschine mit Vorrichtung zur wahlweisen Zufuhr von Einzelblättern aus zwei Papiermagazinen Expired - Lifetime EP0241358B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604978 1986-04-08
FR8604978A FR2596703B1 (fr) 1986-04-08 1986-04-08 Machine imprimante equipee d'un dispositif d'alimentation selective en feuilles d'impression reparties dans deux bacs chargeurs

Publications (2)

Publication Number Publication Date
EP0241358A1 EP0241358A1 (de) 1987-10-14
EP0241358B1 true EP0241358B1 (de) 1990-10-17

Family

ID=9334000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400727A Expired - Lifetime EP0241358B1 (de) 1986-04-08 1987-04-02 Schreibmaschine mit Vorrichtung zur wahlweisen Zufuhr von Einzelblättern aus zwei Papiermagazinen

Country Status (5)

Country Link
US (1) US4770555A (de)
EP (1) EP0241358B1 (de)
DE (1) DE3765565D1 (de)
ES (1) ES2018279B3 (de)
FR (1) FR2596703B1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707886A1 (de) * 1987-03-12 1988-09-22 Mannesmann Ag Vorrichtung zum zufuehren von einzelblaettern zur schreibwalze einer bueromaschine, insbesondere eines matrixdruckers
GB2247647B (en) * 1990-08-20 1995-01-18 Seikosha Kk Dot printer
GB2259499B (en) * 1991-09-11 1995-11-22 Xerox Corp Sheet feeding apparatus
US5350168A (en) * 1992-03-26 1994-09-27 Xerox Corporation Corrugated fang for multi media feeder
DE69307040T2 (de) * 1992-07-22 1997-07-03 Kabushiki Kaisha Tec, Shizuoka Papiervorschubapparat für Drucker
GB9618689D0 (en) * 1996-09-06 1996-10-16 De La Rue Systems Ltd Sheet dispensing apparatus and cassette
KR100211795B1 (ko) * 1996-11-08 1999-08-02 윤종용 레이저 빔 프린터의 보조 급지 장치용 구동장치
JP3581519B2 (ja) * 1997-04-24 2004-10-27 キヤノン株式会社 シート収容カセット、および、これを備えたシート給送装置，画像形成装置
US5954326A (en) * 1997-11-14 1999-09-21 Hewlett-Packard Company Three state shifting device for multi-function office equipment
US7306216B2 (en) * 2002-12-30 2007-12-11 Samsung Electronics Co., Ltd. Power transmitting apparatus, power switching apparatus, and driving apparatus of multi-function machine using the same
US7198263B2 (en) * 2004-04-21 2007-04-03 Lexmark International, Inc. Dual tray selectable sheet picking assembly
JP4605239B2 (ja) * 2008-03-31 2011-01-05 ブラザー工業株式会社 シート搬送装置及び画像記録装置
JP6406034B2 (ja) 2015-01-28 2018-10-17 ブラザー工業株式会社 電子機器
JP6406037B2 (ja) 2015-01-29 2018-10-17 ブラザー工業株式会社 画像形成装置
JP6601107B2 (ja) 2015-09-30 2019-11-06 ブラザー工業株式会社 画像形成システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939130U (de) * 1966-03-28 1966-05-26 Grinten Chem L V D Blattabgabevorrichtung.
US4222557A (en) * 1978-05-16 1980-09-16 Wang Laboratories, Inc. Printer feeding and stacking
JPS58212537A (ja) * 1982-05-31 1983-12-10 Toshiba Corp 用紙搬送装置
DE3234562A1 (de) * 1982-09-17 1984-05-10 Siemens AG, 1000 Berlin und 8000 München Anordnung zum wahlweisen entnehmen von einzelnen papierblaettern aus zwei kassetten
US4475731A (en) * 1982-12-17 1984-10-09 Centronics Data Computer Corp. Programmable, mechanical system for feeding cut sheet paper to a printer
JPS59177236A (ja) * 1983-03-26 1984-10-06 Canon Inc 給紙装置
CH654254A5 (fr) * 1983-06-03 1986-02-14 Hermes Precisa International Dispositif d'alimentation en feuilles pour imprimante ou machine a ecrire.
DE3445633A1 (de) * 1984-12-14 1986-06-26 Mannesmann AG, 4000 Düsseldorf Vorrichtung zum separieren bzw. zufuehren von aufzeichnungstraegern fuer eine schreibmaschine, insbesondere fuer einen matrixdrucker

Also Published As

Publication number Publication date
DE3765565D1 (de) 1990-11-22
EP0241358A1 (de) 1987-10-14
ES2018279B3 (es) 1991-04-01
FR2596703A1 (fr) 1987-10-09
FR2596703B1 (fr) 1988-07-08
US4770555A (en) 1988-09-13

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