EP0024712B1 - Dispositif pour l'alimentation en copies dans une copieuse - Google Patents

Dispositif pour l'alimentation en copies dans une copieuse Download PDF

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Publication number
EP0024712B1
EP0024712B1 EP80105018A EP80105018A EP0024712B1 EP 0024712 B1 EP0024712 B1 EP 0024712B1 EP 80105018 A EP80105018 A EP 80105018A EP 80105018 A EP80105018 A EP 80105018A EP 0024712 B1 EP0024712 B1 EP 0024712B1
Authority
EP
European Patent Office
Prior art keywords
discharge element
copying
output device
film
copier
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
Application number
EP80105018A
Other languages
German (de)
English (en)
Other versions
EP0024712A1 (fr
Inventor
Roland Dr. Dipl.-Phys. Moraw
Renate Schädlich
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Publication of EP0024712A1 publication Critical patent/EP0024712A1/fr
Application granted granted Critical
Publication of EP0024712B1 publication Critical patent/EP0024712B1/fr
Expired legal-status Critical Current

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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
    • G03G15/6552—Means for discharging uncollated sheet copy material, e.g. discharging rollers, exit trays
    • 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
    • G03G15/6588—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material
    • G03G15/6591—Apparatus which relate to the handling of copy material characterised by the copy material, e.g. postcards, large copies, multi-layered materials, coloured sheet material characterised by the recording material, e.g. plastic material, OHP, ceramics, tiles, textiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5133—Removing electrostatic charge
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00417—Post-fixing device
    • G03G2215/00421—Discharging tray, e.g. devices stabilising the quality of the copy medium, postfixing-treatment, inverting, sorting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00443—Copy medium
    • G03G2215/00493—Plastic
    • G03G2215/00497—Overhead Transparency, i.e. OHP
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00535—Stable handling of copy medium
    • G03G2215/00649—Electrodes close to the copy feeding path

Definitions

  • the invention relates to an output device of a copying machine for the stacking of plastic copying films in a storage container, with a fan, a transfer corona and a first discharge element inside the copying machine.
  • the former Because of these different mechanisms of transferring toner images onto plastic films and onto paper, the former have difficulties in fixing the toner images and in stacking them after the copying process. A further difficulty arises in that the plastic films may generally only be heated to a temperature between 110.degree. C. to 130.degree. C. during the fixing process in order to avoid thermoplastic deformation of the films, while the fixing temperatures for paper are quite a bit can be set higher.
  • toner images on plastic films cannot yet be dry-wiped dry when fixed within the temperature range specified above.
  • Another disadvantage is the electrostatic charging of the plastic films, as a result of which, in contrast to paper copies, they cannot be stacked on top of one another in a storage container, but rather adhere to one another. This can lead to backlogs in the interior of the copying machine, since the subsequent copying foils are prevented from exiting by the foils adhering to one another in the storage container, or the copying foils are pushed out of the dispensing container.
  • the object of the invention is to improve an output device of a copying machine of the type described in the introduction so that the plastic films are dry, smudge-proof before being put down and without being able to adhere to one another electrostatically adhering to one another in the storage container.
  • This object is achieved in that a blower is arranged on the outside of the copying machine above the dispensing gap, the air flow of which presses the back of a copying film emerging from the dispensing gap against a second discharge element.
  • the electrostatic charging of the copying films is sufficiently reduced by the grounded discharge element, which grazes along the upper edge of the charged back of the copying film, in order to enable proper stacking of the copying films in the storage container.
  • the air flow of the blower brings about both a complete drying of the toner image on the PVC copying film and an intimate contact between the back of the PVC copying film and the discharge element, which ensures a corresponding dissipation of the electrostatic charges from the back of the PVC copying film against mass is.
  • a further advantage is that the air flow of the blower pushes the foils downwards, resulting in a kind of snap movement of the foil downwards into the storage container. This snap movement also ensures that a film that has jammed, for example, and has not gotten properly into the storage container, is released from this clamping position and properly deposited.
  • FIG. 1 Of a copying machine 1, only the transport path of an image-receiving material, for example a plastic film, in the present case a PVC copying film 16, is shown in FIG. 1. It is obvious that the subject matter of the invention is not restricted to a PVC or a coated copier film, but is suitable for any plastic film. From a storage cassette (not shown) in the copying machine 1, a copying film 16 reaches one Selenium drum 9, from the surface of which a toner image is transferred to the copying film 16 by means of a transfer corona 24.
  • a transfer corona 24 From a storage cassette (not shown) in the copying machine 1, a copying film 16 reaches one Selenium drum 9, from the surface of which a toner image is transferred to the copying film 16 by means of a transfer corona 24.
  • the copying film 16 is detached from the selenium drum 9 by means of a guide spring (not shown) or a deflecting belt, which partially abuts the circumference of the deflecting roller 10, and guided to transport rollers 5 and 6.
  • transport rollers 5 and 6 convey the copying film 16 through a fixing station, which is composed of a fixing pressure roller 11 and a heating plate 26 underneath. Below the heating plate 26 there is a fan 25, which contributes to drying the toner image on the copying film 16.
  • the copying film passes through the fixing station to discharge rollers 12 and 13, which are arranged near the housing wall of the copying machine 1 in front of an output nip 17. Above the discharge gap 17, a discharge brush 2 is attached to the inside of the housing wall of the copying machine 1 as the first discharge element, which contributes to the electrostatic discharge of the front side of the copying film 16.
  • the deflection roller 10, the transport roller 6, the fixing pressure roller 11 and the discharge roller 12 are driven via a transport chain 27, which is an endless chain via the aforementioned rollers, a deflection roller pair 7, 8, a chain tensioner 3 and a chain tensioner deflection roller 14 between the deflection roller 10 and the transport roller 6 rotates.
  • the deflecting roller 10 is driven in a manner not shown together with the selenium drum 9 via a gear.
  • a copying film 16 is shown, which lies with its front edge against a second discharge element 18 which is attached to the outside of the housing wall of the copying machine 1.
  • the second discharge element 18 is connected to the ground point 19 and its upper edge lies higher than a transport plane 23, which is shown in broken lines in FIG. 1 and in which the copying film 16 is moved through the output gap 17.
  • the second discharge element 18 is made of an elastic material and serves as an additional guide element for the copying film 16 emerging from the output nip 17.
  • the discharge rollers 12 and 13 advance the copying film 16, as a result of which the second discharge element 18 is curved and with its upper edge under pressure on the Back of the copy film 16 is present, as shown in dashed lines in Fig. 1.
  • a blower 20 for example a tangential fan, is arranged on the outside of the copying machine 1, which is oriented such that its air flow strikes the front of the copying film 16 perpendicularly. This air flow presses the copying film 16 against the second discharge element 18 and thereby ensures a corresponding contact between the back of the copying film 16 and the discharge element 18.
  • the electrostatic charges located on the back of the copying film 16 are dissipated to ground via the discharge element 18. At the same time, the air flow from the blower 20 causes the toner image on the copying film 16 to be wiped dry.
  • a dispensing container 15 Disposed below the second discharge element 18 is a dispensing container 15, the collecting surface of which is angled such that the smaller part of the surface runs horizontally and the larger part is directed obliquely upwards.
  • the electrostatically discharged copier films form a stack 16 'in the output container 15.
  • the discharge element 18 has the shape of a comb, for example, which is formed from individual sections. The upper edges 21 of these sections run horizontally, so that there is a line contact with the back of the copy film 16.
  • the material for the discharge member 18 is a polyester film coated with aluminum is used, for example, which may have a thickness up to 100 m Il, with a thickness of 75 I lm is preferred.
  • the second discharge element consists of a brush which is formed from elastic metal wires 22, as shown in FIG. 2b.
  • FIG. 3 Another embodiment of the invention is shown in FIG. 3 and differs from the embodiment according to FIG. 1 only in that the blower 20 is inclined relative to the transport plane 23 of the copying film 16. This inclination is adjustable so that the optimum flow direction of the air flow onto the copying film 16 can be set as required in order to obtain a deposit thereof in the output container without tilting the copying film.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Textile Engineering (AREA)
  • Pile Receivers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)

Claims (9)

1. Dispositif assurant la sortie des feuilles d'une machine à copier pour la superposition des feuilles de copie en matière plastique dans un récipient où elles se déposent et comportant un ventilateur (25), un dispositif corona de transmission (24) et un premier élément de décharge (2) monté à l'intérieur de la machine à copier, caractérisé en ce que l'appareil comprend, du côté de l'extérieur de la machine à copier (1) et au-dessus d'une fente de sortie des feuilles (17), un ventilateur (20) dont le jet d'air applique le verso d'une feuille de copie (16) sortant de la fente de sortie (17), contre un deuxième élément de décharge (18).
2. Dispositif selon la revendication 1, caractérisé en ce que le deuxième élément de décharge (18) est constitué par un élément de guidage supplémentaire élastique assurant le guidage de la feuille de copie sortante (16).
3. Dispositif selon la revendication 2, caractérisé en ce que le deuxième élément de décharge (18) est relié à la masse (19) et est fixé à la surface extérieure de la machine à copier (1) au-dessous de la fente de sortie des feuilles (17).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le matériau constituant le deuxième élément de décharge (18) est une feuille de polyester recouverte d'aluminium par vaporisation dont l'épaisseur peut atteindre 100 µm.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le bord supérieur du deuxième élément de décharge (18) est situé plus haut que le plan de transport (23) qui passe par la fente de sortie des feuilles (17).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le deuxième élément de décharge (18) a la forme d'un peigne constitué par des secteurs séparés dont les bords supérieurs (21) sont horizontaux.
7. Dispositif selon la revendication 1, caractérisé en ce que le jet d'air du ventilateur (20) est orienté perpendiculairement au recto d'une feuille de copie (16) portant une image de toner.
8. Dispositiv selon la revendication 1, caractérisé en ce que le jet d'air du ventilateur (20) est incliné par rapport au plan de transport (23) de la feuille de copie (16).
9. Dispositif selon la revendication 1, caractérisé en ce que le deuxième élément de décharge est constitué par une brosse (22) formée de fils métalliques élastiques.
EP80105018A 1979-09-03 1980-08-23 Dispositif pour l'alimentation en copies dans une copieuse Expired EP0024712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2935491 1979-09-03
DE19792935491 DE2935491A1 (de) 1979-09-03 1979-09-03 Ausgabeeinrichtung eines kopiergeraets

Publications (2)

Publication Number Publication Date
EP0024712A1 EP0024712A1 (fr) 1981-03-11
EP0024712B1 true EP0024712B1 (fr) 1983-05-04

Family

ID=6079903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105018A Expired EP0024712B1 (fr) 1979-09-03 1980-08-23 Dispositif pour l'alimentation en copies dans une copieuse

Country Status (4)

Country Link
EP (1) EP0024712B1 (fr)
JP (1) JPS5636667A (fr)
DE (2) DE2935491A1 (fr)
ES (1) ES8104580A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501418A (en) * 1981-02-24 1985-02-26 Tokyo Shibaura Denki Kabushiki Kaisha Stacking device for paper sheets
NL8402941A (nl) * 1984-09-27 1986-04-16 Oce Nederland Bv Inrichting voor het vergaren van vellen.
JPS61295138A (ja) * 1985-06-24 1986-12-25 Tokyo Met Gov 剛体電車線
JP2593679B2 (ja) * 1987-04-10 1997-03-26 三菱電機株式会社 放電灯点灯装置
JPS6438762A (en) * 1987-08-04 1989-02-09 Ricoh Kk Recorder
JP2699400B2 (ja) * 1988-04-22 1998-01-19 日立工機株式会社 電子写真式プリンタの用紙冷却装置
JP3443449B2 (ja) * 1994-04-07 2003-09-02 富士通株式会社 画像読み取り装置用用紙スタック装置及び用紙スタック装置付き画像読み取り装置
JP2000159414A (ja) * 1998-11-27 2000-06-13 Canon Inc シート処理装置及びこれを備えた画像形成装置
JP2013032213A (ja) * 2011-08-03 2013-02-14 Konica Minolta Business Technologies Inc 画像形成装置
JP7155558B2 (ja) * 2018-03-22 2022-10-19 富士フイルムビジネスイノベーション株式会社 除電装置及びこれを用いた被帯電媒体処理装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240490A (en) * 1963-10-04 1966-03-15 Itek Corp Projection offset processors and the like
US3529360A (en) * 1968-11-04 1970-09-22 Olivetti & Co Spa Reprographic output feed system
FR2099054A5 (fr) * 1970-03-10 1972-03-10 Canon Kk
US3781105A (en) * 1972-11-24 1973-12-25 Xerox Corp Constant current biasing transfer system
US4007982A (en) * 1975-02-06 1977-02-15 Xerox Corporation Method and apparatus for ultrasonically cleaning a photoconductive surface
DE2516436B2 (de) * 1975-04-15 1979-02-22 Develop Dr. Eisbein Gmbh & Co, 7016 Gerlingen Kopiergerät mit einer Magnetwalzen-Entwicklungseinrichtung und einer Fixiereinrichtung
DE2631847A1 (de) * 1976-07-15 1978-01-19 Agfa Gevaert Ag Entladungsvorrichtung

Also Published As

Publication number Publication date
DE3062968D1 (en) 1983-06-09
ES494414A0 (es) 1981-03-16
ES8104580A1 (es) 1981-03-16
EP0024712A1 (fr) 1981-03-11
JPS5636667A (en) 1981-04-09
DE2935491A1 (de) 1981-03-19

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