EP1537038A1 - Appareil d'alimentation en feuilles separees - Google Patents

Appareil d'alimentation en feuilles separees

Info

Publication number
EP1537038A1
EP1537038A1 EP03795245A EP03795245A EP1537038A1 EP 1537038 A1 EP1537038 A1 EP 1537038A1 EP 03795245 A EP03795245 A EP 03795245A EP 03795245 A EP03795245 A EP 03795245A EP 1537038 A1 EP1537038 A1 EP 1537038A1
Authority
EP
European Patent Office
Prior art keywords
sheet
stacking portion
sheet stacking
separation roller
lever
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Withdrawn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
EP03795245A
Other languages
German (de)
English (en)
Inventor
Yoshihiro Kamimura
Yoshihiro Tsumori
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1537038A1 publication Critical patent/EP1537038A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/5215—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
    • B65H3/5223—Retainers of the pad-type, e.g. friction pads
    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/54—Pressing or holding devices

Definitions

  • the present invention relates to a sheet separate-feeding apparatus used in a facsimile apparatus, a printer, and a copying machine, in which plural sheets such original documents and recording sheets are separated one by one to be fed.
  • a sheet separate-feeding apparatus in which plural sheets such original documents and recording sheets are separated one by one to be fed is used in a facsimile apparatus, a printer, and a copying machine.
  • a conventional sheet separate-feeding apparatus for example, JP-A-9-240865 has been know .
  • Fig.6 is a mainportion sectional view showing one example of the conventional sheet separate-feeding apparatus.
  • reference numeral 51 is a conventional sheet separate-feeding apparatus
  • reference numeral 52 is a casing member of the sheet separate-feeding apparatus 51
  • reference numeral 53 is a sheet stackingportion locatedontheupperportion side of the casing member 53
  • reference numeral 54 is a sheet feeding surface formed on the lower portion side of the casing member 52
  • reference numeral 55 is a rotary shaft located at the lowest portion of the sheet stacking portion 53 orthogonally to a sheet feeding direction
  • reference numeral 56 is a separation roller attached to the rotary shaft 55
  • reference numeral 57 is a separation pad provided in pressure contact with the lower portion of the separation roller 56
  • reference character X is a sheet
  • reference character Y is a separation point that is a contact portion between the separation roller 56 and the separation pad 57.
  • the thus constructed sheet separate-feeding apparatus operates as follows: Namely, the separation roller 56 attached to the rotary shaft 55 rotates with rotation of the rotary shaft 55, and feeds out the sheet X placed on the sheet stackingportion 53 onto the sheet feeding surface 54. At this time, by the separation pad 57 set on the sheet feeding surface 54 in pressure-contact with the separation roller 56, the sheets X are separated one by one. Thus, by the sheet separate-feeding apparatus 51, the sheets X placed on the sheet stacking portion 53 can be separated one by one to be fed onto the sheet feeding surface 54.
  • the plural sheets X are strongly pushed from the sheet stacking portion 53 toward the separation roller 56 when they are supplied onto the sheet stacking portion 53, the plural sheets X overlapped to each other are fed into the separation point Y that is the contact portion between the separationpad 57 andthe separation roller 56, and ippedbetween the separation pad 57 and the separation roller 56. Therefore, the plural sheets X are fed out from the separation roller 56 in an overlap state, so that a problem of double-feed of sheet X is caused.
  • the present invention has been made in order to solve the conventional problem, and its object is to provide a sheet separate-feeding apparatus which can prevent double-feed of sheet causedby the separation roller even in case that the plural sheets overlapped to each other are strongly pushed toward the separation roller from the sheet stacking portion.
  • a sheet separate-feeding apparatus of the invention comprises a sheet stacking portion; a sheet feeding surface extending from the sheet stackingportion in a sheet feeding direction; a separation roller which is attached to a rotary shaft provided orthogonally to the sheet feeding direction, rotates with rotation of the rotary shaft, and feeds out the sheetplaced on the sheet stacking portion onto the sheet feeding surface; and a separation pad which is arranged on the sheet feeding surface and brought into pressure-contactwiththe separationrollerwiththe sheetnipped between the separation roller and it, wherein stopper levers which can come out and in freely are provided on both sides of a contact portion on the sheet feeding surface between the separation roller and the separation pad.
  • Fig. 1 is a main portion perspective view of a facsimile apparatus including a sheet separate-feeding apparatus in a first embodiment of the invention
  • Fig. 2A is a main portion perspective view of the sheet separate-feeding apparatus in the first embodiment of the invention
  • Fig.2B is a sectional view taken along a line A-A of Fig. 2A;
  • Fig. 3A is a main portion perspective view of the sheet separate-feeding apparatus in the first embodiment of the invention
  • Fig.3B is a sectional view taken along a line B-B of Fig. 3A;
  • Fig. 4A is a main portion sectional view showing a state where a cover of the sheet separate-feeding apparatus in the first embodiment of the invention is opened;
  • Fig. 4B is a main portion sectional view showing a state where the cover of the sheet separate-feeding apparatus in the first embodiment of the invention is closed;
  • Fig.5 is amainportionperspective view showing a stopping member formed at an end portion of a movable sheet stacking portion
  • Fig.6 is a mainportion sectional view showing one example of a conventional sheet separate-feeding apparatus.
  • Fig. 1 is a main portion perspective view of a facsimile apparatus includinga sheet separate-feedingapparatus ina first embodiment of the invention, in which a sheet separate-feeding apparatus 1 is arranged at the rear upper portion of a facsimile apparatus Z.
  • the sheet separate-feeding apparatus 1 includes a casing member 2, and a sheet stacking portion 3 extending on the upper portion of the casing member 2.
  • a movable sheet stacking portion 4 is provided at the lower portion of the sheet stacking portion 3, that is, on a sheet feeding direction side of the sheet stacking portion 3.
  • the movable sheet stacking portion 4 is rotatably supported by the casing member 2 at its upper end portion.
  • a cover 5 is openably provided on the upper surface side of the movable sheet stacking portion 4.
  • Fig. 2A is a main portion perspective view of the sheet separate-feeding apparatus in the first embodiment of the invention.
  • Fig. 2B is a sectional view taken along a line A-A shown in Fig. 2A.
  • Fig. 3A is a main portion perspective view of the sheet separate-feeding apparatus in the first embodiment of the invention.
  • Fig. 3B is a sectional view taken along a line B-B shown in Fig.3A.
  • Fig.5 is a main portion perspective view showing a stopping member formed at an end portion of a movable sheet stackingportion. In Figs.2 and 3, the separation roller is omitted.
  • reference numeral 4a is a lever operatingmechanismwhich causes a stopper lever described later to come in and out in cooperation with closing and opening of the cover 5
  • reference numeral 4b is a stopping member provided on each side of the movable sheet stacking portion 4
  • reference numeral 4c is a stopping groove formed in the stopping member 4b
  • re erence numeral 4d is a stopping slide inclined portion which is formed at the stopping member 4b and extends from the stopping groove 4c
  • reference numeral 4e is a lever pushing portion arranged at the lowest portion of the movable sheet stacking portion
  • reference numeral 4f is a movable sheet stacking portion side wall standing on each side of the movable sheet stacking portion 4.
  • Reference numeral 5a is a cover stopping portion which is formed protrusively on each side of the cover 5 and on the opposite side of a cover rotating shaft of the cover 5 described later, and fits into the stopping groove 4c of the stoppingmember
  • Reference numeral 6 is a stacking portion shaft supporting portion provided for the casing member 2
  • reference numeral 6a is a stacking portion rotating shaft which is provided for the movable sheet stacking portion side wall 4f and supported by the stacking portion shaft supporting portion 6
  • reference numeral 7 is a cover rotating shaft which supports openably the cover 5.
  • the movable sheet stacking portion 4 has an elastic member such as a spring on its lower side and is energized to the cover 5 side.
  • Reference numeral 8 is a sheet feeding surface formed on the lower portion upper surface side of the casing member 2, and reference numeral 9 is a press member arranged in the center on the upper surface of the movable sheet stacking portion 4.
  • Reference numeral 10 is a separation member which is provided in the center on the upper surface side of the sheet feeding surface 8 and extends from the press member 9, and reference numeral 11 is a separationpadwhich is provided astride the press member 9 and the separation member 10 and brought into press-contact with a not-shown separation roller.
  • Reference numerals 12a and 12b are lever holes formed on the sheet feeding surface 8 and on both sides of the separation pad 11, andthese leverholes 12a and 12b areprovidedinpositions where the separationmember 10 is put between them.
  • Lever members (described later in detail) are provided for these lever holes 12a and 12b so that they can come in and out.
  • Reference numerals 13a and 13b are stopper levers each of which is a part of the lever member protruding from the lever hole 12a, 12b.
  • a lever member 14 is formed nearly in the shape of L.
  • the stopper lever 13a is formed at one end of the lever member 14, and a pushing side end portion 14b is formed at the other end thereof.
  • Reference numeral 13c is a catch portion formed at the stopper lever 13a.
  • the levermember 14 is supported rotatablybya lever rotating shaft 14aprovidedfor abentportion thereof.
  • Reference numeral 14a is a lever rotating shaft which supports the lever member 14 rotatably.
  • Reference numeral 14b is a pushing side end portion which is formed at the other end of the lever member 14 and pushed by the lever pushing portion 4e of the movable sheet stacking portion 4.
  • the lever member 14 arranged in the other lever hole 12b has also the same constitution, that is, it is supported by the lever rotating shaft rotatably and a catch portion is formed at the stopper lever 13b that can come in and out.
  • the lever operating mechanism 4a which drives the lever member 14 in cooperation with opening and closing of the cover 5 comprises the cover stopping portion 5a provided for the cover 5, and the stopping member 4b provided for the movable sheet stacking portion 4. The lever operating mechanism 4a will be described below.
  • the cover stopping member 5a is provided at each end of the plate-like cover 5 and protrudes through the cover rotating shaft 7 to the opposite side. On both ends of the movable sheet stacking portion 4, as shown in Fig. 5, the stopping members 4b are formed opposed to the cover stopping portions 5a.
  • the stopping member 4b includes the stopping groove 4c and the stopping slide inclined portion 4d formed on the lower portion side of the stopping groove 4c.
  • the movable sheet stacking portion 4 is energized to the cover 5 side by the spring.
  • the cover stopping portion 5a touches and pushes the stopping slide inclined portion 4d while it is sliding on this stopping slide inclined portion 4d.
  • the movable sheet stacking portion 4 is pushed up against the energizing force of the spring.
  • the cover stopping portion 5a fits into the stopping groove 4c, and the cover 5 is settled in the opened state (refer to Figs.2A and 2B) .
  • the cover 5 keeps the opened state and the movable sheet stacking portion 4 is in the pushed down state.
  • the stopper levers 13a and 13b are arranged at least on this side in the feeding direction in the vicinity of the contact portion between the separation roller and the separation pad 11. At this stopper lever 13a, 13b, the catch portion 13c protruding to the contact side with the sheet is formed.
  • the cover 5 opens, the movable sheet stacking ortion 4 is pushed down, and the stopper levers 13a and 13b protrude rom the sheet feeding surface 8 (Fig.2B) . Under the state where the stopper levers 13a and 13b protrude, the sheet is caught surely by the stopper levers 13a and 13b because of this catch portion. Therefore, it is possible to surely prevent the sheet from being inserted between the separation roller and the separation pad 11 over the separation point.
  • the sheet separate-feeding apparatus 1 includes a separation, roller that is a pick-up roller which feeds out the sheet on the sheet stacking portion 3 and the movable sheet stacking portion 4. Though the separation roller is not shown, it is supported by a rotary shaft and comes into contact with the upper portion of the separation pad 11.
  • the separation pad 11 is formed of a thin plate-like cork material and has flexibility.
  • the press member 9 forpressing the separationpadll against the separation roller
  • the separation member 10 which separates, from the plural sheets overlapped to each other that the separation roller is about to feed out, only one sheet coming into contact with the separation roller and causes the separation roller to feed out its sheet.
  • springs for energizing the press member 9 and the separation member 10 to the separation roller side are arranged.
  • Fig. 4A is a main portion sectional view showing a state where the cover of the sheet separate-feeding apparatus in the first embodiment of the invention is opened
  • Fig. 4B is a main portion sectional view showing a state where the cover of the sheet separate-feeding apparatus in the first embodiment of the invention is closed.
  • reference numeral 15 is a rotary shaft
  • reference 16 is a separation roller supported by the rotary shaft 15 rotatably
  • reference character X is a sheet
  • reference character Y is a separation point.
  • the movable sheet stacking portion 4 is energized by a not-shown spring and rotates about the stacking portion rotating shaft 6a, and the lever pushing portion 4e formed at the lower end portion of the movable sheet stacking portion 4 moves in a direction G.
  • pushing by the lever pushing portion 4e applied to the pushing side end portion 14b of the lever member 14 is released, the lever member 14 rotates about the lever rotating shaft 14a in a direction H by its own weight, and the stopper lever 13a comes in.
  • feeding force Fl is produced in the top sheet coming into contact with the separation roller 16.
  • fictional force F2 with the top sheet is produced in the second sheet from the top, and the second sheet is fed in the same directionby the frictional force F2.
  • frictional force F3 is produced between the sheets and the separation pad 11, and the sheets receive the frictional force F3.
  • the sheet separate-feeding apparatus in the first embodiment of the invention is thus constructed, even in case that the plural sheets X overlapped to each other are strongly pushed toward the separation roller 16 from the upstream side in the feeding direction at the sheet X supplying time, the double-feed of sheet X can be prevented and the plural sheets X can be surely separated one by one.
  • the stopper lever is arranged on this side in the feeding direction in the vicinity of the contact portion between the separation roller and the separation pad 11, it is possible to provide the sheet separate-feeding apparatus which can surely prevent the sheets from being inserted between the separation roller and the separation pad over the separation point.
  • the openable cover is provided for the sheet insertion inlet of the sheet stacking portion, and the lever operating mechanism which causes the stopper lever to come in and out in cooperation with opening and closing of this cover is provided, the following eff cts can be obtained:
  • the stopper lever can be protruded f om the sheet feeding surface through the lever operating mechanismby opening the cover, when the cover is opened to supply the sheets onto the sheet stacking portion, even in case that the plural sheets overlapped to each other are strongly pushed toward the separation roller from the sheet stacking portion, the sheets are caught by the protruding stopper levers. Therefore, it is possible to provide the sheet separate-feeding apparatus which can surely prevent the sheets from being inserted between the separation roller and the separation pad over the separation point.
  • the stopper lever By closing the cover, the stopper lever can be caused to come in the sheet feeding surface through the lever operating mechanism. Therefore, after the cover was closed, in a state where the leading ends of the sheets are arranged in the suitable position on this side of the separation point, the sheets are fed to the separation roller, so that it is possible to provide the sheet separate-feeding apparatus in which only one sheet co ing into contact with the separation roller can be surely separated from the other sheets.
  • the lever operating mechanism includes the movable sheet stacking portion which extends from the sheet stacking portion in the sheet feeding direction, is supported on the sheet stacking portion side, and is arranged tiltably; the lever pushing portionwhich is provide for this movable sheet stacking portion, and pushes the pushing side end by the inclination of the movable sheet stacking portion in the direction where the stopper lever is protruded; and the stopping members provided on the both sides of the movable sheet stacking portion, wherein the stopping members provided on the both sides of the movable sheet stacking portion are pressed at the both sides of the cover in cooperation with opening and closing of the cover thereby to tilt the movable sheet stacking portion.
  • the sheet separate-feeding apparatus which can surely prevent the sheets from being inserted between the separation roller and the separation pad over the separation point.

Landscapes

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

Abstract

Cette invention concerne un appareil (10) d'alimentation en feuilles séparées permettant d'éviter l'alimentation de double feuille causée par le rouleau séparateur (16), même lorsque plusieurs feuilles superposées les unes sur les autres sont poussées avec force vers un rouleau séparateur (16) depuis une partie (4) contenant la pile de feuilles au moment de l'alimentation en feuilles. L'appareil d'alimentation en feuilles séparées comprend un rouleau séparateur (16) servant à faire sortir la feuille et un tampon séparateur (11) qui presse la feuille entre le rouleur séparateur (16) et ledit tampon et qui sépare ladite feuille des autres feuilles. Cet appareil comprend également des leviers de blocage (13A) qui sont placés des deux côtés d'une partie de contact sur une surface d'alimentation en feuilles entre le rouleau séparateur (16) et le tampon séparateur (11) de manière qu'ils puissent entrer et sortir et qui reçoivent la feuille introduite provenant de la partie contenant la pile de feuilles.
EP03795245A 2002-08-27 2003-08-27 Appareil d'alimentation en feuilles separees Withdrawn EP1537038A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002246521 2002-08-27
JP2002246521A JP2004083202A (ja) 2002-08-27 2002-08-27 分離給紙装置
PCT/JP2003/010874 WO2004024607A1 (fr) 2002-08-27 2003-08-27 Appareil d'alimentation en feuilles separees

Publications (1)

Publication Number Publication Date
EP1537038A1 true EP1537038A1 (fr) 2005-06-08

Family

ID=31972420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03795245A Withdrawn EP1537038A1 (fr) 2002-08-27 2003-08-27 Appareil d'alimentation en feuilles separees

Country Status (6)

Country Link
US (1) US20040041332A1 (fr)
EP (1) EP1537038A1 (fr)
JP (1) JP2004083202A (fr)
CN (1) CN1678509A (fr)
AU (1) AU2003265172A1 (fr)
WO (1) WO2004024607A1 (fr)

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JP4323973B2 (ja) * 2004-02-04 2009-09-02 キヤノン株式会社 シート給送装置及びこれを備えた画像形成装置並びに画像読取装置
US8360417B2 (en) * 2005-01-31 2013-01-29 Hewlett-Packard Development Company, L.P. Input tray media de-slouch system
KR100636246B1 (ko) * 2005-09-06 2006-10-19 삼성전자주식회사 용지의 중송이 방지되는 급지장치
JP2008207940A (ja) * 2007-02-27 2008-09-11 Brother Ind Ltd 画像形成装置及びシート供給装置
JP2008273677A (ja) * 2007-04-27 2008-11-13 Seiko Epson Corp 予備分離体、自動給送装置
WO2009086388A1 (fr) * 2007-12-27 2009-07-09 Digital Business Processes, Inc. Appareil d'alimentation automatique en document
CN104249938B (zh) * 2013-06-25 2017-11-17 株式会社理光 规制联动机构以及图像形成装置
JP6142832B2 (ja) * 2014-03-31 2017-06-07 ブラザー工業株式会社 シート分離装置
CN108081760A (zh) * 2018-01-08 2018-05-29 厦门爱印科技有限公司 一种便携式打印机

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Also Published As

Publication number Publication date
AU2003265172A1 (en) 2004-04-30
US20040041332A1 (en) 2004-03-04
WO2004024607A1 (fr) 2004-03-25
JP2004083202A (ja) 2004-03-18
CN1678509A (zh) 2005-10-05

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