EP0711428B1 - Vorrichtung zum transport von aufzeichnungsträgern in druck- oder kopiergeräten - Google Patents
Vorrichtung zum transport von aufzeichnungsträgern in druck- oder kopiergeräten Download PDFInfo
- Publication number
- EP0711428B1 EP0711428B1 EP94920885A EP94920885A EP0711428B1 EP 0711428 B1 EP0711428 B1 EP 0711428B1 EP 94920885 A EP94920885 A EP 94920885A EP 94920885 A EP94920885 A EP 94920885A EP 0711428 B1 EP0711428 B1 EP 0711428B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- friction
- transporting
- paper
- printing
- elements
- 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
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
- G03G15/6517—Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor
- G03G15/652—Feeding a copy material originating from a continuous web roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
-
- 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
- G03G15/6529—Transporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/11—Details of cross-section or profile
- B65H2404/112—Means for varying cross-section
-
- 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
- G03G2215/00451—Paper
- G03G2215/00455—Continuous web, i.e. roll
-
- 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
- G03G2215/00451—Paper
- G03G2215/00455—Continuous web, i.e. roll
- G03G2215/00459—Fan fold, e.g. CFF, normally perforated
Definitions
- the invention relates to a device for transporting record carriers in printing or copying machines according to the features of claim 1.
- the object of the invention is therefore a device for the transport of record carriers in printing or copying machines with the aid of friction elements To provide, in which the friction elements without pivoting devices easily engaged and disengaged from the record carrier can be brought.
- the device is intended in particular as Auxiliary drive for an automatic recording medium insertion device in Printing and copying machines should be suitable.
- the invention is particularly suitable for use in electrophotographic Printing devices that process recording media of different widths. Due to the paired arrangement of the friction wheels or transport elements all paper webs lying between limit values in terms of their width, straight ahead transported through the paper transport channel without special settings by the operating personnel depending on the width of the recording medium are necessary.
- An electrophotographic printing device contains a supply table 10 for receiving a supply stack 11 made of pre-folded continuous paper 12, and one with a pivotable actuating rocker provided with a paper divider device 13 14 for feeding the continuous paper 12 to a transfer station 15, via the Transfer toner images generated on a photoconductor 16 onto the continuous paper 12 will.
- the transfer printing station 15 contains one for transporting the continuous paper 12 Tractor drive 17 with two lateral perforations in the continuous paper 12 engaging tractor belts with transport nipples arranged on them.
- four pivotally mounted tractor flaps 18 are arranged, which form the continuous paper press against the tractor belts in the area of the perforation surface.
- a fixing station for fixing the loose toner images on the continuous paper.
- This contains a loop puller 19, the The task is to stabilize the paper flow.
- a vacuum brake 20 the fixing station via a vacuum channel 21 with a preheating saddle 22 communicates.
- the preheating saddle 22 contains a stationary one Pre-heating saddle 23 and a pivoting heating saddle 24.
- the actual fixing of the toner images takes place in a preheating saddle 22 fusing gap downstream in the paper running direction between a heated fusing roller 25 and a pressure roller which can be pivoted on and off 26.
- a cooling device consisting of a cooling saddle 27 with air outlet openings and a Cooling profile 28 performed.
- the continuous paper is after in this cooling device leaving the fixing gap with the toner image fixed thereon on the front and back blown with cooling air to the continuous paper with the toner image cool down. This is necessary in order for the subsequent stacking of the Continuous paper a sticking together of the individual forms of the continuous paper to prevent.
- a stacking device with a is located in the outlet area of the fusing station Stacking surface 29 and one can be raised relative to the stacking surface 29 and lowerable feed device 30.
- the feed device 30 are motorized driven paper transport rollers 31 arranged with a paper detector 32, e.g. in the form of a light barrier.
- a paper detector 32 e.g. in the form of a light barrier.
- a deflection element 33 is provided for the correct placement of the beginning of the paper to facilitate.
- All units such as transfer station 15, loop puller 19, vacuum brake 20, preheating saddle 22, cooling device 27, form a continuous Support surface for the record carrier, with the continuous support surface Part of one from the transfer printing station 15 to the entry area leading to the stacking device paper channel.
- One wall surface of the Paper channel is formed by the support surface, the other wall surface through the paper guide elements 34.
- a recording medium additional transport device 35 arranged, which is designed so that it only during the insertion process is in engagement with the surface of the recording medium 12 and this transported.
- This record carrier additional transport device contains how Shown in FIG. 2, transport elements 36, which have a drive motor 37 ( Figure 3) are driven.
- the transport elements which are designed as friction wheels, are made in one piece from elastic material, for example Vulkollan (pure) L63 Shore A. They are mounted above the recording medium 12 at a distance from the recording medium 12 so as to be rotatable about an axis of rotation 38.
- Each of the transport elements 36 has four webs 39 arranged radially around the axis of rotation, on which friction elements 40 designed as wheel segments are distributed over the circumference.
- Each of the four friction elements 40 has a friction surface 41, each friction surface 41 forming approximately a quarter circle.
- Each transport element 36 is mounted on a holder in the form of an aluminum wheel 42 which is fastened on the axis of rotation 38 of the drive motor 37, for example via a clamp connection.
- the friction elements 40 are now designed with regard to their mass and their elastic attachment to the webs 39 so that a sufficient minimum distance AB from the recording medium 12 is maintained when the friction elements 40 are at a standstill. If the transport elements 36 are rotated with the aid of the drive motors 37 in accordance with the direction of the arrow shown, then due to the centrifugal force the friction elements pivot into the transport position T shown in dashed lines, specifically with regard to their deflection path through the stop pins 45 in connection with the stop openings 46.
- the transport elements are in one piece cut out of elastic material. It is also possible to use the friction elements to be arranged as separate elements, which via spring elements to the Axis of rotation are tied. Guides may be provided for this purpose. Furthermore, the friction elements 40 can consist of metal and on it Friction surface 41 may be coated with a friction-increasing material. Farther it is possible to use a larger or smaller one instead of four friction elements Arrange number of friction elements. If necessary, one is enough Friction element on a single web.
- each drive motor 37 attached a pair on both sides of the drive motor 37 Assigned transport elements 36.
- These pairs of transport elements are in the record carrier transport channel arranged such that at least in area of the narrowest record carrier 12/1 and in one at this area adjacent area for the wider record carriers 12/2 and 12/3 Transport element is located.
- the narrowest record carrier 12/1 a width of 210 mm
- the medium width Record carrier 12/2 a width of 375 mm
- the widest record carrier 12/3 a paper width of 457 mm.
- the transfer station is for this purpose swung away and a feed-through channel opens between the photoconductor drum 16 and transfer station 15.
- the paper transport rocker 14 is located doing so in the pivoting position. After swiveling the paper transport arm The actual threading process begins in the insertion position. This can are triggered by pressing a corresponding button on the control panel or but automatically by scanning the position of the paper feed rocker 14.
- the feeding device 30 of the stacking device moves into the interrupted Lines shown top position, adjacent to the fuser.
- the line pulses are the pulses that are used for Determine the individual writing lines on the continuous paper serve. you will be generated in the device control in connection with the character generator. Since a form length, i.e. a sheet of continuous paper, a given one Contains number of write lines, also by the location of the insertion position A the starting position of the continuous paper with regard to the first form exactly is determined, these line pulses can be used to determine the feed length be used. Controlled by the implement control, the tractor drive pushes 17 the continuous paper 12 over the edge perforations with a Loading speed towards the fuser.
- the beginning of the continuous paper glides i.e. the first form on the contact surface of the units.
- the Loading speed must not be too fast because of the inert mass of the continuous paper can cause paper jams when accelerating. You mustn't too be slow, otherwise the heat will pass through the warm fuser It can deform paper too much, causing a paper jam can.
- An optimal loading paper speed lies like the tests showed between 0.3 m / s and 0.7 m / s.
- the continuous paper runs immediately after leaving the transfer station 15 in the paper channel from the support surface and paper guide elements.
- the one about the drive motors 37 driven transport elements 36 capture with the friction surfaces 41 of the friction elements 40 and transport the record carrier 12 him through the fuser.
- the feed speed of the transport elements 36 is chosen somewhat higher than the feed speed of the transfer printing station 15. This will tighten the paper.
- the heating caliper 24 is of the Fusing roller 25 pivoted, it is in stand-by mode in the heated Status.
- the pressure roller 26 is also pivoted away. After leaving the The preheating saddle 22 reaches the beginning of the paper, the cooling saddle 27, slides thereon along and runs into the area of the paper transport roller 31 of the feed device 30.
- the paper detector 32 which recognizes the paper web and the control device Command to the device control to stop the further transport of the continuous paper gives. Then it is checked whether there is a paper jam. There is no paper jam before, the paper start of the continuous paper 12 is synchronized with the feeder 30 moved down into the area of the stacking surface 29. This is followed by a fold-correct placement via the stack tab 33.
- the paper transport rollers 31 After applying the negative pressure, the paper transport rollers 31 are switched off, likewise the drive of the transport elements 36. As a result, the friction elements lift 14 with their friction surfaces 41 from the surface of the recording medium 12 from. After completing the loading process, printing can begin be started.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handling Of Sheets (AREA)
- Paper Feeding For Electrophotography (AREA)
Description
Es zeigen
Gelagert ist jedes Transportelement 36 auf einer Halterung in Form eines Alurades 42, das auf der Drehachse 38 des Antriebsmotors 37 zum Beispiel über eine Klemmverbindung befestigt ist. Auf dem Alurad 42 angeordnet sind Befestigungsstifte 43, die in entsprechende Befestigungsöffnungen 44 des Transportelementes 36 eingreifen sowie Anschlagstifte 45, die wiederum in in Form von Langlöchem ausgebildete Anschlagöffnungen 46 des Transportelementes 36 eingreifen.
Die Friktionselemente 40 sind nun hinsichtlich ihrer Masse und ihrer elastischen Befestigung an den Stegen 39 so ausgelegt, daß im Stillstand bei eingeschwenkten Friktionselementen 40 ein ausreichender Mindestabstand AB von dem Aufzeichnungsträger 12 eingehalten wird. Werden die Transportelemente 36 mit Hilfe der Antriebsmotoren 37 in Drehbewegung entsprechend der dargestellten Pfeilrichtung versetzt, so schwenken aufgrund der Fliehkraft die Friktionselemente in die gestrichelte dargestellte Transportposition T und zwar begrenzt hinsichtlich ihres Auslenkweges durch die Anschlagstifte 45 in Verbindung mit den Anschlagöffnungen 46. Dadurch vergrößert sich der Hüllkreis der Transportelemente 36 soweit nach außen, daß die Friktionselemente 40 über ihre Friktionsflächen 41 die Aufzeichnugnsträgeroberfläche 12 berühren und diese durch Friktion transportieren. Wird der Antrieb gedrosselt, schwenken die Friktionselemente 40 durch die Rückholkraft der elastischen Befestigung wieder in ihre Ruhelage und geben in einem Abstand AB zum Aufzeichnungsträger 12 den Aufzeichnungsträger frei. Damit ist es möglich, beim eigentlichen automatischen Einlegen des Aufzeichnungsträgers 12 in die Druckeinrichtung durch Antrieb der Transportelemente 36 den Vorschub des Aufzeichnungsträgers 12 zu unterstützen.
Nach Beendigung des Einlegevorganges, wenn der Aufzeichnungsträger die Ablagefläche 29 erreicht hat, wird der Antrieb der Transportelemente 36 abgeschaltet und die Friktionselemente 40 heben von der Aufzeichnungsträgeroberfläche ab. Im nachfolgenden Druckbetrieb bewegt sich der Aufzeichnungsträger 12 mit den darauf angeordneten losen Tonerbildern frei durch den Papiertransportkanal im Abstand AB zu den Transportelementen 36.
Claims (7)
- Vorrichtung zum Transport von Aufzeichnungsträgern (12) in Druck- oder Kopiergeräten mit mindestens einem in einem Aufzeichnungsträgertransportkanal im Abstand zum Aufzeichnungsträger (12) um eine Drehachse (38) über eine Antriebseinrichtung (37) drehbar angeordneten einstückig aus elastischem Material ausgebildeten Transportelement (36), das in seinem Umfangsbereich mindestens ein in der Art eines Schlagelementes auslenkbar derart an die Drehachse (38) gefesseltes Friktionselement (40) mit einer Friktionsfläche (41) aufweist, daß fliehkraftbedingt bei Drehung des Transportelementes (36) das Friktionselement (40) aus einer Ruhelage entgegen einer Rückholkraft über seine Friktionsfläche (41) in Friktionskontakt mit dem Aufzeichnungsträger (12) gelangt und diesen transportiert und daß mindestens im Stillstand des Transportelementes (36) das Friktionselement (40) den Aufzeichnungsträger (12) freigibt.
- Vorrichtung nach Anspruch 1 mit einer den Auslenkweg des Friktionselementes (40) begrenzenden Einrichtung (42, 45, 46).
- Vorrichtung nach Anspruch 2 mit einer das Transportelement (36) aufnehmenden Halterung (42), die in Anschlagöffnungen (46) der Friktionselemente (40) eingreifende Anschlagstifte (45) aufweist.
- Vorrichtung nach einem der Ansprüche 1 bis 3 mit einem Transportelement (36), das um die Drehachse (38) radial angeordnete Stege (39) aufweist, an denen die Friktionselemente (40) elastisch angelenkt sind.
- Vorrichtung nach einem der Ansprüche 1 bis 4 wobei die Transportelemente (36) in einem Aufzeichnungsträger (12/1, 12/2, 12/3) unterschiedlicher Breite aufnehmenden Aufzeichnungsträgertransportkanal derart angeordnet sind, daß sich mindestens im Bereich des schmalsten Aufzeichnungsträgers (12/1) und in einem an diesen Bereich angrenzenden Bereich für die breiteren Aufzeichnungsträger (12/2, 12/3) ein Transportelement (36) befindet.
- Vorrichtung nach Anspruch 5 mit einem Paar Transportelementen (36), die über eine gemeinsame Drehachse (38) mit der Antriebseinrichtung (37) gekoppelt sind.
- Vorrichtung nach einem der Ansprüche 1 bis 6, angeordnet im Aufzeichnungsträgertransportkanal einer elektrofotografischen Druckeinrichtung als Hilfsantrieb für eine Aufzeichnungsträgereinlegevorrichtung.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4325357 | 1993-07-28 | ||
DE4325357 | 1993-07-28 | ||
PCT/DE1994/000823 WO1995004308A1 (de) | 1993-07-28 | 1994-07-18 | Vorrichtung zum transport von aufzeichnungsträgern in druck- oder kopiergeräten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0711428A1 EP0711428A1 (de) | 1996-05-15 |
EP0711428B1 true EP0711428B1 (de) | 1998-01-14 |
Family
ID=6493934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94920885A Expired - Lifetime EP0711428B1 (de) | 1993-07-28 | 1994-07-18 | Vorrichtung zum transport von aufzeichnungsträgern in druck- oder kopiergeräten |
Country Status (4)
Country | Link |
---|---|
US (1) | US5667125A (de) |
EP (1) | EP0711428B1 (de) |
DE (1) | DE59405044D1 (de) |
WO (1) | WO1995004308A1 (de) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2108085C3 (de) * | 1970-03-09 | 1974-08-22 | Peter Kufstein Zimmer (Oesterreich) | Rakelrolle |
JPS57176067A (en) * | 1981-04-21 | 1982-10-29 | Canon Inc | Continuous sheet loading device of recorder or the like |
US5310106A (en) * | 1982-10-29 | 1994-05-10 | Societe Des Etablissements Thimon | Apparatus for obtaining differential tangential variable speeds at different points of a deformable film |
JPS59138545A (ja) * | 1983-01-31 | 1984-08-09 | Fujitsu Ltd | ピンチロ−ラ |
JPS59228677A (ja) * | 1983-06-10 | 1984-12-22 | Fuji Xerox Co Ltd | 電子複写機の帯電装置 |
US4913574A (en) * | 1987-09-30 | 1990-04-03 | Brother Kogyo Kabushiki Kaisha | Sheet feeding apparatus in a printer |
DE3902923C2 (de) * | 1988-03-16 | 1994-06-01 | Heidelberger Druckmasch Ag | Bogenführungstrommel für Bogenrotationsdruckmaschinen |
JPH03138243A (ja) * | 1989-10-20 | 1991-06-12 | Canon Inc | シート材搬送装置 |
GB2238525A (en) * | 1989-11-11 | 1991-06-05 | Unisys Corp | Sprung wheel |
EP0432298A1 (de) * | 1989-12-13 | 1991-06-19 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Automatische Papiereinlegeeinrichtung für eine elektrofotografische Druckeinrichtung |
DE3943227A1 (de) * | 1989-12-22 | 1991-07-04 | Mannesmann Ag | Vorrichtung fuer den transport von einzelblaettern oder papierbahnen wechselnder bzw. unterschiedlicher breite und/oder dicke |
-
1994
- 1994-07-18 US US08/586,679 patent/US5667125A/en not_active Expired - Fee Related
- 1994-07-18 DE DE59405044T patent/DE59405044D1/de not_active Expired - Fee Related
- 1994-07-18 WO PCT/DE1994/000823 patent/WO1995004308A1/de active IP Right Grant
- 1994-07-18 EP EP94920885A patent/EP0711428B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0711428A1 (de) | 1996-05-15 |
DE59405044D1 (de) | 1998-02-19 |
WO1995004308A1 (de) | 1995-02-09 |
US5667125A (en) | 1997-09-16 |
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