EP0485768A2 - Copieuse munie d'un dispositif de détournement - Google Patents

Copieuse munie d'un dispositif de détournement Download PDF

Info

Publication number
EP0485768A2
EP0485768A2 EP91117966A EP91117966A EP0485768A2 EP 0485768 A2 EP0485768 A2 EP 0485768A2 EP 91117966 A EP91117966 A EP 91117966A EP 91117966 A EP91117966 A EP 91117966A EP 0485768 A2 EP0485768 A2 EP 0485768A2
Authority
EP
European Patent Office
Prior art keywords
roller
circumference
take
sheet
copier according
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Withdrawn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
EP91117966A
Other languages
German (de)
English (en)
Other versions
EP0485768A3 (en
Inventor
Alfred Neugebauer
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.)
Develop Dr Eisbein GmbH and Co
Original Assignee
Develop Dr Eisbein GmbH and Co
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 Develop Dr Eisbein GmbH and Co filed Critical Develop Dr Eisbein GmbH and Co
Publication of EP0485768A2 publication Critical patent/EP0485768A2/fr
Publication of EP0485768A3 publication Critical patent/EP0485768A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H15/00—Overturning articles
    • B65H15/004—Overturning articles employing rollers
    • 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0638—Construction of the rollers or like rotary separators

Definitions

  • the invention relates to a copying machine with a deflection device which causes a deflection of an incoming sheet by approximately 180 ° and which is arranged immediately after a removal roller assigned to a stack of sheets fed.
  • U-shaped guide channels serve as deflection devices, through which the copy paper is moved.
  • deflection devices through which the copy paper is moved.
  • comparatively large radii of curvature are required , since otherwise the leading edge of a sheet can no longer slide easily in the guide channel, which would result in curling of the sheet and thus a paper jam.
  • This difficulty with the radii of curvature of the guide channels being too small would occur especially with heavy types of paper and foils.
  • the invention has for its object to provide a copier with little effort with a space-saving deflection device, which allows a reliable and trouble-free deflection of a sheet with a comparatively small radius of curvature.
  • the object is achieved for a copier of the type mentioned in that the deflection device as a the take-off roller partially surrounding guide element is formed, which rests with a predetermined contact force on the circumference of the take-off roller.
  • a removed sheet is not only deflected passively by walls of the insertion gap, but is also actively pulled around the deflection by being pressed against the removal roller. This ensures a safe and reliable transport of a sheet, in particular when a deflection within a small area, ie with a large curvature, is desired for reasons of space saving.
  • the arrangement according to the invention enables, for example, a radius of curvature of less than 20.5 mm for the deflection, i.e. a very flat design.
  • a leaf spring or a Teflon strip held in the holder against the circumference of the take-off roller and held in the circumferential direction serves as the guide element.
  • the low sliding friction coefficient of this material makes paper transport easier.
  • the use of the leaf spring or the Teflon strip as an elastic element combines favorable elastic properties with a low manufacturing cost.
  • means are provided for adjusting the contact force of the guide element.
  • the deflection device of the copying machine can thus be easily adapted to the types of paper or film to be drawn in.
  • the copying machine contains a sensor within the transport area downstream of the take-off roller and a coupling coupled to the sensor and arranged on a shaft of the take-off roller.
  • the position of a drawn sheet can be recognized with the sensor.
  • a corresponding signal from the sensor makes it possible to actuate the clutch and thus to guide the take-off roller into a predetermined position.
  • a flattening on the take-off roller can thus always be brought into the area opposite the front edge of the sheet stack before a new sheet is drawn in, in order to enable a single sheet feed if necessary, in particular the feeding of a film.
  • the coupling includes a rod which can be moved between two positions and a hub which is fixed in a rotationally fixed manner on the shaft of the take-off roller and has an annular groove which is introduced on one side, the rod which engages in the annular groove of the hub and in one end position on the one hand with detents on the inner ring groove edge , on the other hand cooperates with a single detent on the outer ring groove edge.
  • this clutch can be used to set a defined position of the take-off roller, whereas, on the other hand, the detent on the inner ring groove edge can be used to lock the shaft for the take-off roller and thus stop the paper transport in a desired position.
  • the inner ring groove edge of the hub has no catches within an angular region opposite the individual detent on the outer ring groove edge. This measure serves to prevent the shaft from being locked unintentionally when the rod is moved into the position which enables the individual catch to be turned past the outer edge of the ring groove without contact. This is particularly useful if the take-off roller makes several revolutions for the insertion of a single sheet of paper due to its comparatively small radius. The individual catch is then to be turned past the nose of the rod without contact until the paper sheet is completely drawn in or transported on. The latter can be recognized by the associated sensor. Only then is the rod moved into the position in which its nose can interact with the individual catch. The engagement of the catch on the nose then locks the shaft and guarantees the correct position of the take-off roller for a new paper feed.
  • a deflection device (1) shown in FIG. 1 With the aid of a deflection device (1) shown in FIG. 1, individual sheets of paper or film are pulled off a stack (15) held in a cassette (14) and deflected.
  • a take-off roller (2) fixed in a rotationally fixed manner on a shaft (3) approximately in the middle above the front side of the cassette (14) inserted into a receptacle on the copying machine.
  • the shaft (3) runs parallel to the front edge of the cassette (14), i.e. in the direction of withdrawal, and is mounted on frame parts of the copying machine in a manner not shown.
  • the take-off roller (2) is provided with a segment-like flattening (5).
  • the flattening (5) lies in front of the stack (15) in front of a paper feed to be carried out and enables a problem-free cut-sheet installation if necessary.
  • a control (not shown) sets the shaft (3) and with it the take-off roller (2) in direction (D) in rotation.
  • a driving rubber (4) which is attached in the peripheral surface (25) of the flattening (5) forming the periphery of the draw-off roller (2) to the draw-off roller (2), pulls the one located there at its movement over the stack (15) Leaf off.
  • the take-off roller (2) shown here has a deflection function.
  • the lateral surface (25) is surrounded within a deflection angle range (U) at a short distance by a holder (7) attached to frame parts of the copying machine, on which a leaf spring (10) is fixed.
  • the leaf spring (10) is inserted into the gap between the holder (7) and the outer surface (25) in such a way that it is held at its ends in each case preloaded on the holder (7), so that between its ends it is held against the outer surface (25 ) of the take-off roller (2).
  • the pressing force results from the deflection of the leaf spring (10) forced by the lateral surface (25) and the pretensioning by means of a spring (13).
  • the leaf spring (10) is fixed at one end (12) to a part (11) of the holder (7) which can be displaced tangentially to the take-off roller (2).
  • the part (11) is supported against the force of the spring (13) with respect to the rest of the holder (7), as a result of which the contact force of the leaf spring (10) on the lateral surface (25) is relative to the position of the part (11) the remaining part of the bracket (7) can be adjusted.
  • the arrangement of the displaceable part (11) facilitates the replacement of the leaf spring (10).
  • the holder (7) can be pivoted away from the lateral surface (25) about an axis, not shown, in the region of its lower, L-shaped bent end. This means that any paper jams that may occur can be removed easily and simply.
  • the leaf spring (10) On the inlet side, the leaf spring (10) initially runs tangentially to the take-off roller (2), so that an insertion gap is formed, into which the front edge of a leaf easily runs.
  • An auxiliary device for separating the paper sheets is arranged in a niche (8) formed by the lower end of the holder (7), which has an L-shaped cross section from the take-off roller (2).
  • This device consists of a polyurethane rubber element (6) which is pressed radially against the outer surface (25) of the take-off roller (2) by means of a spring (9). The middle of the rubber element (6) lies against the take-off roller (2), to which it is oriented essentially tangentially. If several sheets are accidentally pulled off the driving rubber (4), the sheets following the uppermost sheet are held by the rubber element (6) and at another feeder hindered.
  • the driving rubber (4) extends over a sufficiently large angular range so that it reaches the rubber element (6) before its rear end leaves the area above the paper stack (15). This ensures a safe transition of the paper withdrawal movement to the subsequent paper deflection movement.
  • a separated sheet pulled from the driving rubber (4) from the stack (15) is safely guided during the further paper transport in that the leaf spring (10) actively moves the sheet against the driving rubber (4) and against the remaining cylindrical area in the deflection angle area (U) presses the outer surface (25).
  • the angular range over which the leaf spring rests on the draw-off roller (2) is considerably larger than the angular range occupied by the flattened portion (5), so that in any position of the draw-off roller (2) the leaf spring (10 ) presses the sheet against the outer surface (25).
  • the leaf spring (10) held in the circumferential direction of the take-off roller (2) has sufficient sliding properties so that the sheet to be drawn in adheres to the rotating jacket surface (25) and slides past the leaf spring (10).
  • a drawn sheet leaves the area of the lateral surface (25) and reaches an area formed by two funnel-shaped guide plates (16, 17). From this area, downstream transport rollers (19, 20) are used to transport the sheet further, for example to a subsequent toner drum (not shown).
  • the dimensions of the take-off roller (2) are chosen so that several turns of the take-off roller (2) are required to completely feed a sheet.
  • the shape of the take-off roller (2) which is not rotationally symmetrical due to the flattening (5) and the driving rubber (4), means that it follows one when the sheet has been drawn in again should assume the defined starting position shown in FIG. 1.
  • a clutch (26) shown in FIG. 2 serves this purpose.
  • the coupling (26) consists of a hub (21) seated in a rotationally fixed manner on the shaft (3), the end face side of which is shown in FIG. 2 has an annular groove (30).
  • a single detent in the form of a stop lug (22) is formed on the outer circumference (31) of the annular groove (30).
  • Sawtooth-like detents are formed on the inner circumference (23) of the annular groove (30), a ring area opposite the stop nose (22) being excluded.
  • a lug (29) interacts with the catches on the inner circumference (23) and with the stop lug (22) and is attached to the end of a rod (24) which can be moved transversely between two end positions.
  • the rod (24) is guided in the area of the hub (21) by means of an elongated hole (28) through which the shaft (3) extends.
  • the coupling (26) is arranged laterally above the cassette (14).
  • the nose (29) comes to a stop on the stop nose (22). Since only one such stop tab (22) is formed on the outer circumference (31), this stop defines a specific position of the shaft (3) and thus of the take-off roller (2).
  • the rod (24) is held in the right end position shown and, when the shaft (3) rotates in the direction (D), it is waited until the stop lug (22) strikes the lug (29).
  • the holding of the rod (24) in its right end position is caused by a paper transport control, not shown in more detail, when a sensor (18) shown in FIG. 1, which is arranged in front of the transport rollers (19, 20), signals that a retracted Sheet has left this area and a new sheet can be fed.
  • the sensor (18) consists of a photocell with which it can be seen whether there is still a sheet between the guide plates (16, 17) or not.
  • the paper transport control causes the rod (24) to be shifted into its other end position, which is on the left in FIG. 2.
  • the nose (29) which is designed as a double nose, then interacts with one of the catches on the inner circumference (23) of the hub (21) and stops the shaft (3) and thus the take-off roller (2) Time at which the partially retracted sheet with its front edge forms a slight wave in front of the transport rollers (19, 20).
  • the sensor (18) also detects that the sheet has reached the transport rollers (19, 20). In this position, the sheet is on demand so that it can be fed to the downstream copier devices by means of the transport rollers (19, 20).
  • the small dimensions of the draw-off roller (2) require several revolutions of this draw-off roller (2) to completely feed a sheet.
  • the take-off roller (2) must not be stopped by the interaction of the nose (29) with the stop nose (22) when the initial position shown in FIG. 1 is reached again for the first time.
  • the paper transport control moves the rod (24) into its end position on the left in FIG. 2 for a certain period of time before performing a complete revolution of the draw-off roller (2), so that the stop nose (22) does not strike the nose (29) strikes. After turning past a sufficient tolerance angle range, the rod (24) is moved back into the right end position.
  • the rod (24) When the paper feed is finished and the take-off roller (2) is to be brought into the starting position, the rod (24) is held in the right end position so that the stop lug (22) can strike the nose (29) and the take-off roller ( 2) so that it reaches the starting position exactly.
  • the described evasive movement by moving the rod (24) into the left end position in the meantime must not be used to lock the shaft (3) by engaging the nose (29) in one of the
  • the advantage of the coupling (26) shown is that the shaft (3) can be stopped both in a defined position and at a desired point in time, without the need for two different stop mechanisms or additional electrical monitoring.
  • the clutch (26) then enables the exact starting position for the take-off roller (2) to be reached without additional monitoring devices.
  • the rod (24) is preferably actuated electromagnetically and is in the de-energized state of the magnet in the end position on the right in FIG. 2 which interacts with the stop lug (22).
  • the clutch (26) thus requires only one stop mechanism (magnet) and no additional monitoring device.
  • the sheet to be drawn in can be pressed against the outer surface (25) by a pneumatic device by means of a pressure difference in the deflection angle range (U) generated on the outer surface (25) of the take-off roller (2).
  • Another possibility is to arrange rubber-like elements corresponding to the driving rubber (4) on the entire cylindrical part of the lateral surface (25) at a distance from one another in such a way that they are resiliently supported radially outward on the take-off roller (2).
  • the sheet is then pressed by the resilient rubber on the outer surface (25) against an element surrounding the outer surface (25) like a sleeve. In this case, too, there is no need to introduce a strip-like, elastic element.
  • an element surrounding the lateral surface (25) in the manner of the holder (7) itself, such that it rests against the lateral surface (25), e.g. by a bearing on an axis about which the element can be rotated, the element coming into abutment against the lateral surface (25) as a result of this rotary movement.
  • the pressing force can be applied by means of a spring pressing the element against the outer surface (25) or by the weight of the element itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP19910117966 1990-11-16 1991-10-22 Copying apparatus with deflection device Withdrawn EP0485768A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4036543 1990-11-16
DE4036543A DE4036543A1 (de) 1990-11-16 1990-11-16 Kopiergeraet mit umlenkeinrichtung

Publications (2)

Publication Number Publication Date
EP0485768A2 true EP0485768A2 (fr) 1992-05-20
EP0485768A3 EP0485768A3 (en) 1992-11-25

Family

ID=6418382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910117966 Withdrawn EP0485768A3 (en) 1990-11-16 1991-10-22 Copying apparatus with deflection device

Country Status (4)

Country Link
US (1) US5273267A (fr)
EP (1) EP0485768A3 (fr)
JP (1) JPH04266342A (fr)
DE (1) DE4036543A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272864B (en) * 1992-11-25 1996-03-06 Samsung Electronics Co Ltd Image formation apparatus using electrostatic writing method
JPH07157151A (ja) * 1993-12-03 1995-06-20 Murata Mach Ltd 原稿給送装置
JP3822652B2 (ja) * 1994-04-26 2006-09-20 ブラザー工業株式会社 用紙搬送装置
US5720477A (en) * 1994-07-20 1998-02-24 Pfu Limited Paper-feeding device
US5537227A (en) * 1994-10-14 1996-07-16 Hewlett-Packard Company Paper picking and separator system for facsmile or copy machine
GB2349872B (en) * 1999-05-11 2004-01-14 Mars Inc Flexible media dispenser
WO2008002232A1 (fr) * 2006-06-30 2008-01-03 Astrazeneca Ab Contenant muni d'un dispositif chronologique indiquant l'heure de prise de la dernière dose ou l'heure de prise de la dose suivante
US20080166164A1 (en) * 2007-01-04 2008-07-10 Samsung Electronics Co., Ltd. Image forming apparatus and method to convey printing medium
CN115339253B (zh) * 2022-08-26 2024-05-03 河北智取科技有限公司 纸质文件自动盖章装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583700A (en) * 1968-08-16 1971-06-08 Martin R P Seib Conveyance of electrically charged sheets
EP0201711A2 (fr) * 1985-04-12 1986-11-20 Hitachi, Ltd. Appareil d'enregistrement d'image
US4872659A (en) * 1987-04-30 1989-10-10 Ricoh Company, Ltd. Cassette with turn cover and feed roller control

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941892B2 (ja) * 1978-09-05 1984-10-11 ロ−レルバンクマシン株式会社 紙葉類計数機の繰り出し装置
JPS55145946A (en) * 1979-04-27 1980-11-13 Matsushita Electric Ind Co Ltd Paper feeder
DE3136206A1 (de) * 1981-09-12 1983-03-31 Develop Dr. Eisbein Gmbh & Co, 7016 Gerlingen Kopiergeraet, insbesondere buero-kopiergeraet
US4674737A (en) * 1983-09-14 1987-06-23 Ricoh Company, Ltd. Automatic sheet feeding device
JPS60213642A (ja) * 1984-04-06 1985-10-25 Laurel Bank Mach Co Ltd 紙幣繰り出し装置
JPS6251528A (ja) * 1985-08-27 1987-03-06 Ricoh Co Ltd シ−ト分離搬送装置
JPS6351230A (ja) * 1986-08-20 1988-03-04 Canon Inc 記録装置
JPS63212638A (ja) * 1987-03-02 1988-09-05 Hitachi Ltd 給紙装置
FR2640602B1 (fr) * 1988-12-20 1991-06-07 Alcatel Business Systems Depileur d'articles plats

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3583700A (en) * 1968-08-16 1971-06-08 Martin R P Seib Conveyance of electrically charged sheets
EP0201711A2 (fr) * 1985-04-12 1986-11-20 Hitachi, Ltd. Appareil d'enregistrement d'image
US4872659A (en) * 1987-04-30 1989-10-10 Ricoh Company, Ltd. Cassette with turn cover and feed roller control

Also Published As

Publication number Publication date
DE4036543A1 (de) 1992-05-21
JPH04266342A (ja) 1992-09-22
US5273267A (en) 1993-12-28
EP0485768A3 (en) 1992-11-25

Similar Documents

Publication Publication Date Title
DE3588085T2 (de) Elektrostatisches Kopiergerät
DE3320734C2 (fr)
DE3107263C2 (de) Elektrostatisches Kopiergerät
EP1513753B1 (fr) Dispositif de separation de produits en forme de feuillets
EP0485768A2 (fr) Copieuse munie d'un dispositif de détournement
DE69101482T2 (de) System für das seitliche Ausrichten von Bögen.
DE69026422T2 (de) Papierzuführungsapparat für einen Etikett-Drucker
DE2844954A1 (de) Vorrichtung zum stapeln flexibler boegen
DE60014224T2 (de) Papierzuführvorrichtung
DE3032505C2 (de) Einrichtung zum Falzen der Vorderkante und zum Fördern eines blattförmigen Kopieträgers für ein elektrophotographisches Kopiergerät
DE60110317T2 (de) Papierzuführeinheit
CH637227A5 (de) Kopiergeraet mit einer auf eine huelse gewickelten papierrolle und huelse fuer das kopiergeraet.
DE2643908C2 (de) Bildträgertrommel für elektrophotografische Kopiergeräte
DE3884305T2 (de) Gerät zum Fördern von Aufzeichnungsmaterial ausgestattet mit Mitteln zum leichten Beheben von Störungen verursacht durch Materialstau.
DE3335181A1 (de) Blattzufuhrvorrichtung
DE3808477A1 (de) Vorrichtung zum glaetten von einzelblaettern in nichtmechanischen druck- und kopiereinrichtungen
WO2001087601A2 (fr) Appareil de pliage
DE4225418C2 (de) Einrichtung zum Übernehmen von Blattmaterial und zum Übergeben des Blattmaterials an eine Entnahmestation
EP1976784A1 (fr) Dispositif pour deposer des feuilles en piles
DE69208593T2 (de) Vorrichtung zum Vereinzeln und Zuführen von Papierblättern und Steuerungsverfahren dafür, und dieses Verfahren verwendender Kassenautomat
EP0463997B1 (fr) Cassette pour l'enroulement de matériau photographique en bande
DE1611537B1 (de) Vorrichtung fuer einen Kopierapparat zur automatischen Trennung von Original und Kopie
EP0750584B1 (fr) Unite collectrice pour produits en forme de feuilles
WO1994026643A1 (fr) Systeme de rouleaux de serrage pour le dispositif d'empilage d'une imprimante ou d'une photocopieuse
DE19622686C2 (de) Vorrichtung zum sequentiellen Zuführen von Papierblättern in einem Facsimile-System

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930526