EP0112276A2 - Dispositif pour amener des feuilles individuelles d'une pile de feuilles - Google Patents

Dispositif pour amener des feuilles individuelles d'une pile de feuilles Download PDF

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Publication number
EP0112276A2
EP0112276A2 EP83730101A EP83730101A EP0112276A2 EP 0112276 A2 EP0112276 A2 EP 0112276A2 EP 83730101 A EP83730101 A EP 83730101A EP 83730101 A EP83730101 A EP 83730101A EP 0112276 A2 EP0112276 A2 EP 0112276A2
Authority
EP
European Patent Office
Prior art keywords
separating
rollers
sheet
assigned
stack
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.)
Granted
Application number
EP83730101A
Other languages
German (de)
English (en)
Other versions
EP0112276B1 (fr
EP0112276A3 (en
Inventor
Gerhard Lohrmann
Kurt Röhrer
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
Publication of EP0112276A2 publication Critical patent/EP0112276A2/fr
Publication of EP0112276A3 publication Critical patent/EP0112276A3/de
Application granted granted Critical
Publication of EP0112276B1 publication Critical patent/EP0112276B1/fr
Expired 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 individual sheets from a stack of sheets into the guide channel assigned to a platen roller by means of drivable transport rollers, a stacking base movable against the transport rollers and stops for the sheet stack and blocking fingers separating the individual sheets.
  • Devices of this type for separating individual sheets from a stack of sheets are used, for example, in automatic typewriters, printers, in particular in matrix printers.
  • the known solution also uses a movable stacking base which is continuously pressed against the rollers separating the individual sheets by means of spring force.
  • the stackable base which can be moved by spring force, pushes up more than just one sheet, so that the separating roller also transports two sheets which are pushed against the locking finger.
  • the locking finger also serves only as a stop and not for the actual separation of individual sheets in the area of the stacking base. The present invention therefore assumes that both side stops for the sheet stack and separating fingers separating the individual sheets are assigned to the stack base at the level of the stack base.
  • the invention is therefore based on the object of developing the device described at the outset with a view to improved disengagement of a single sheet from the region of the laterally arranged locking fingers.
  • the stacking base is formed from one or more guide strips arranged symmetrically to the center of the single sheet, each of which is assigned a drivable separating roller opposite in the area of a front stop, and also that the locking fingers of the separating rollers in the lateral edge areas of the sheet stack are assigned that the separating rollers are arranged higher than the locking fingers and that the separating rollers at the beginning of the separating process are at least rotatable against the feed direction of a single sheet by the path of the overlap by the locking fingers.
  • the guide strips, laterally parallel guide walls and spacer rods are combined to form a rocker which is pivotally mounted in the side parts of the device frame by means of an axis of rotation.
  • the design of the seesaw and the swivel mounting enable the entire stack to be swiveled in the direction of the singling rolls.
  • rocker is assigned a control bridge, which consists of one or more spring-loaded levers pivoted by means of an axle in the side parts of the device frame. Regardless of the height of the stack of sheets, the rocker is therefore always pivoted in the direction of the separating rollers, the contact pressure being kept almost constant.
  • rocker serves as a guide for a guide wall that is adjustable to paper width.
  • the drive transmission for the separating rollers is carried out according to further features of the invention in that the separating rollers are arranged on an axis that can be driven by the platen roller and that the drive movement can be transmitted in the two directions of rotation by means of an electromagnetic clutch or by means of a drive train.
  • a front stop and the locking fingers are arranged on superimposed axes.
  • the axes 3, 4, 5 are rotatably mounted in the side parts 1 and 2.
  • a rocker 31 which consists of the guide walls 6 and 7 'and the spacer rods 8 which are firmly pressed or loosely inserted therein.
  • Another guide wall 9 can be on the axis 3 or the spacer bar 8 of the desired paper width accordingly laterally shifted and locked on the axis 3 by means of a locking lever (not described in more detail).
  • stop angles 10 and 11 are provided in the rear position, which can be shifted into locking positions or steplessly and are adjusted according to the respective length of the single sheet or a single form.
  • the separating rollers 17 and further drive parts to be described are located on the axis 4.
  • a control bridge 32 is formed, which is formed from the outer levers 12, which are fixedly connected to the axis 5, and an axis 13.
  • the axis 13 is in engagement with the guide walls 6, 7 and 9 of the rocker 31 via the elongated holes 6a.
  • the control bridge 32 is pivoted clockwise by two tension springs 14 and takes the rocker 31 supported thereon by the axis 13.
  • the stack of forms 16 supported on the guide strips 15 comes to rest against the separating rollers 17 located on the axis 4.
  • the contact pressure remains constant, even if the height of the stack of forms 16 changes.
  • the one limitation for the stack of forms 16 is formed by two front stops 18 which are mounted on the axis 19.
  • the device is u. a. driven by the clutch wheel 20, which is in engagement via a gear train 21 with a gear 23 which is fixedly connected to the platen roller 22.
  • the clutch wheel 20 is part of the electromagnetic clutch 24 which, when energized, transmits the rotary movement emanating from the platen roller 22 to the axis 4 in the same direction of rotation.
  • the axis 4 with the separating rollers 17 are also rotated clockwise, ie in the feed direction for the Linzel sheets, via the described drive elements.
  • the separating rollers 17 push this Sheet into the area of effect of the platen roller 22, then the electromagnetic clutch 24 switches off.
  • the top form which bends back at the corners, is transported over the blocking fingers 25 and fed to the friction rollers 27 through a guide plate 26.
  • a sensor 29 is arranged, which senses the front edge of the single sheet and thus initiates a preprogrammed reversing movement which conveys the single sheet into the desired printing position.
  • the printed single sheet or form is ejected into a fold-away storage compartment 30, the advantage of which is that when the stack of forms 16 is inserted, one has full view of the stack of forms.
  • multilayer form sets can also be fed.

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
EP83730101A 1982-12-17 1983-10-24 Dispositif pour amener des feuilles individuelles d'une pile de feuilles Expired EP0112276B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3247341 1982-12-17
DE19823247341 DE3247341A1 (de) 1982-12-17 1982-12-17 Vorrichtung fuer die zufuehrung einzelner blaetter von einem blattstapel

Publications (3)

Publication Number Publication Date
EP0112276A2 true EP0112276A2 (fr) 1984-06-27
EP0112276A3 EP0112276A3 (en) 1985-07-17
EP0112276B1 EP0112276B1 (fr) 1987-11-25

Family

ID=6181309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83730101A Expired EP0112276B1 (fr) 1982-12-17 1983-10-24 Dispositif pour amener des feuilles individuelles d'une pile de feuilles

Country Status (3)

Country Link
US (1) US4613124A (fr)
EP (1) EP0112276B1 (fr)
DE (2) DE3247341A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0167988A3 (en) * 1984-07-09 1986-07-16 Siemens Aktiengesellschaft Paper supply holder for printing mechanisms having distance elements arranged on the depositing surface

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795145A (en) * 1986-09-22 1989-01-03 Centronics Data Computer Corporation Cut sheet paper mechanism
DE3844325A1 (de) * 1988-12-27 1990-06-28 Mannesmann Ag Vorrichtung fuer die zufuehrung von einzelblaettern in bueromaschinen, insbesondere in matrixdruckern
JPH06164854A (ja) * 1992-11-19 1994-06-10 Canon Inc 複写装置及びその方法
US6357740B1 (en) * 1998-11-30 2002-03-19 Canon Kabushiki Kaisha Sheet feeding apparatus and image forming apparatus
JP2008280162A (ja) * 2007-05-14 2008-11-20 Seiko Epson Corp 給紙装置
JP6115431B2 (ja) 2013-09-27 2017-04-19 ブラザー工業株式会社 シート搬送装置、及び画像読取装置
JP7848502B2 (ja) * 2022-02-22 2026-04-21 株式会社リコー シート給送装置及びラミネート処理装置及び画像形成装置及び画像形成システム

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599972A (en) * 1969-07-23 1971-08-17 Pitney Bowes Inc Paper tray for photocopy machine
US4023792A (en) * 1971-12-08 1977-05-17 Xerox Corporation Sheet feeding apparatus
US3857558A (en) * 1973-06-21 1974-12-31 Xerox Corp Paper cassette design with irregular bottom
US3883133A (en) * 1973-09-17 1975-05-13 Xerox Corp Movable pack advancer
US3866901A (en) * 1973-10-01 1975-02-18 Xerox Corp Reverse buckle feeder
CH611577A5 (en) * 1976-04-05 1979-06-15 Kurt Ruenzi Device on an office machine for the automatic feeding thereof with sheets
US4089402A (en) * 1976-07-01 1978-05-16 Hy Grip Products Co. Sheet feeding mechanism for an automatic typewriter
DE2735223C2 (de) * 1977-08-04 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum Bewegen blattförmiger Aufzeichnungsträger von bzw. zu Blattstapeln
CH620652A5 (fr) * 1978-01-23 1980-12-15 Rutishauser Data Ag
DE2816448C3 (de) * 1978-04-15 1981-01-08 Helmut 7210 Rottweil Steinhilber Vorrichtung zum Zuführen von Papierblättern für eine schreibende Büromaschine
CH637899A5 (en) * 1979-05-29 1983-08-31 Albert Rutishauser Transport device for sheet-like recording media
JPS55160613A (en) * 1979-06-01 1980-12-13 Nec Corp Paper feeding mechanism
CH639345A5 (de) * 1979-09-07 1983-11-15 Kurt Ruenzi Zufuhrvorrichtung fuer papierblaetter fuer ein kopiergeraet.
US4492371A (en) * 1980-02-22 1985-01-08 Canon Kabushiki Kaisha Feeding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0167988A3 (en) * 1984-07-09 1986-07-16 Siemens Aktiengesellschaft Paper supply holder for printing mechanisms having distance elements arranged on the depositing surface

Also Published As

Publication number Publication date
EP0112276B1 (fr) 1987-11-25
DE3374674D1 (en) 1988-01-07
US4613124A (en) 1986-09-23
DE3247341A1 (de) 1984-06-20
DE3247341C2 (fr) 1988-08-25
EP0112276A3 (en) 1985-07-17

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