EP0934223B1 - Entwölbungseinheit für trägermaterial - Google Patents
Entwölbungseinheit für trägermaterial Download PDFInfo
- Publication number
- EP0934223B1 EP0934223B1 EP97946733A EP97946733A EP0934223B1 EP 0934223 B1 EP0934223 B1 EP 0934223B1 EP 97946733 A EP97946733 A EP 97946733A EP 97946733 A EP97946733 A EP 97946733A EP 0934223 B1 EP0934223 B1 EP 0934223B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- decurling
- eliminating
- substrate material
- decurling unit
- unit 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims description 17
- 239000000758 substrate Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000012876 carrier material Substances 0.000 description 16
- 238000007654 immersion Methods 0.000 description 7
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 238000009499 grossing Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/34—Apparatus for taking-out curl from webs
Definitions
- the present invention relates to a decurling unit according to the preamble of claim 1 for decurling carrier material.
- the paper quality can be considered within a paper stack are assumed to be constant, but not the number of Fixations per sheet or per page.
- Roll paper that e.g. with automatic feeding into one Cut sheet printer at the printer entrance cut to size , the curvature that changes with the roll diameter must of the fed paper are taken into account.
- de-arching units also in German Known as "Decurler”
- the paper with only a direction of deformation i.e. concave or convex curvature
- Such a known decurling unit bends the paper against the direction of deformation. at undeformed, i.e. straight paper, this decurling unit may not be used, otherwise it would be in it be deformed. Therefore, paper transport is smooth Paper with such a decurling unit is not possible.
- a decurling device is known the either concave or convex paper smoothes or can be passed through smooth paper, without bending the paper.
- the vaulting facility has two parallel to each other running strips that are transverse to the direction of transport of the paper, and two parallel to the two bars extending rollers, which in Direction of transport seen immediately after the two Strips are arranged.
- the strips and the rollers are on attached to a common swivel with which together around a transverse to the direction of transport Axis can be pivoted.
- the paper will be between passed through the two strips and the two rollers, one bar with diametrically opposite arranged roller forms a decurling unit with which convex or concave paper can be smoothed.
- the strips and the rollers are used to smooth the paper pivoted together about the axis so that the decurling device continuous paper on one of the two Last as well as the diametrically opposed Roller is under tension and is thereby arched. If the decurling device runs through smooth paper, the pivoting device is placed so that the paper runs between the strips and the rollers without to touch them.
- a decurling unit is known from US Pat. No. 5,565,971. with the optionally concave or convex arched carrier material can be smoothed.
- the decurling unit has to this Purpose a transverse to the direction of transport of the carrier material fixed first roller and a parallel to this running, driven, rubberized second roller, whereby both rollers are attached to a common base plate are.
- the invention is therefore based on the object of a decurling unit To provide a smoothing of the Backing material regardless of the direction of deformation allows.
- carrier material with a concave or a convex deformation also carrier material passed through the decurling unit without deformation can be.
- the element in the decurling unit according to the invention is to remove convexity with the element for Eliminating concavity so functionally coupled that on the one hand with an increase in the effect of the element Eliminating convexity a decrease in the effect of the Elements to remove concavity and on the other hand a decrease in the effectiveness of the elimination element from convexity to an increase in the effect of the element Elimination of concavity occurs.
- This enables one continuous or graded adjustment of the decurling unit between two extreme settings for elimination extreme concavity or extreme convexity.
- the element is to be eliminated of concavity a wave of dewatering with itself extending perpendicular to the direction of transport of the carrier material Axis of rotation, with the de-arching shaft in one or more arranged parallel to each other, driving them by static friction stretchable de-belting that is submersible between a drive roller and a deflection roller for the or the de-belting in the transport direction of the Carrier material are stretched, the axes of rotation of the Drive roller and the deflection roller also perpendicular to Extend the direction of transport of the carrier material, so that the or Deconvolution belt in convex shape on the decurling shaft is or are concerned.
- the concavity is removed by the concave arched substrate to be smoothed between the de-tearing belt and the one in it with a suitable one Immersion depth t immersed wave of decurling and between the belt and shaft convex, i.e. opposite, is bent.
- the element is useful for eliminating convexity one concave in the transport direction of the carrier material shaped outlet contour that is in the paper path at an angle is pivotable.
- the convex paper is made by the concave curved outlet contour, by a suitable swivel angle ⁇ is swung out in the opposite direction deformed, whereby a smoothing is achieved.
- these are Element for removing concavity and the element for Elimination of convexity rigidly connected by a linkage and pivotable together about a common axis of rotation A.
- the linkage is expediently pivoted through a tooth segment rigidly connected to the linkage via a Pinion of an actuator.
- This configuration is special simple and enables a continuous curvature of the carrier material by a corresponding one-time rotation of the tooth segment.
- the decoiling device Especially when using rolled paper, that will be cut at the printer entrance becomes the diameter of the coil and based on the detected diameter the servomotor of the decurling unit is controlled. In this way, the decoiling device according to the invention the curvature of the rolled paper on Printer input constantly adjusted.
- Fig. 1 shows schematically the smoothing process for concave corrugated paper a and convex curved paper b that made up a fixing station F is ejected.
- the deburring unit E converts the concave or convex paper to smooth Paper c around.
- Fig. 2 shows a sectional view of a preferred embodiment the decurling unit in a first setting.
- a pivotable rod 10 is fixed, dives in or the tensioned de-belt 4 with a Immersion depth t1. This arrangement forms an element for Eliminating concavity.
- An outlet contour 12 with a concave curvature is around swung out a swivel angle ⁇ 1 downwards. she forms an element for eliminating convexity. That from the element to remove concavity Sheet of paper will be opposite to one here existing convex curvature of the paper. The bigger the swivel angle ⁇ 1, the weaker the effect to remove convexity. The uncurled paper is in forwarded in the direction of R2.
- Both the decurling shaft 8 and the outlet contour 12 are rigidly connected to the axis of rotation A, about which the Linkage 10 is pivotable. Swiveling the boom 10 counterclockwise increases the depth of indentation t1 and the swivel angle ⁇ 1, whereby the component for Eliminating concavity strengthened and the component to Elimination of convexity is weakened. Therefore, by Swing the boom counterclockwise an appropriate one Setting to remove incoming paper with always greater concavity can be achieved. This setting takes place via a toothed segment rigidly connected to the linkage 10 10a, which with a pinion 14a of a servomotor 14 in Intervention is.
- Fig. 3 shows a sectional view of the preferred embodiment the decurling unit in a second setting. Tension the drive roller 2 and the deflection roller 6 in turn, the one or more de-arching belts 4.
- the decurling wave 8 plunges here into the one or more De-warping belt 4 with an immersion depth t2 that is smaller than the immersion depth t1 of FIG. 1.
- One along convex upward in the direction of R1 Sheet of paper is drawn on its leading edge from the through the rubber-like de-belting 4 driven de-winding shaft 8 detected and drawn in between.
- the initially convex arched sheet of paper is transported between the Belt 4 and shaft 8 have only a slight convex curvature imposed, which at least caused the initial convex curvature is not reinforced.
- the smaller the depth of penetration t2 the weaker the convex bending effect, i.e. the effect of removing concavity.
- the outlet contour 12 with its concave curvature is now over swung out a swivel angle ⁇ 2, which is smaller than the swivel angle ⁇ 1 of FIG. 1. That from the element to remove concavity Sheet of paper will be opposite to one here existing concave curvature of the paper curved.
- the pivoting of the linkage 10 clockwise causes one Decrease in the penetration depth t2 and the swivel angle ⁇ 2, thereby weakening the concavity removal component and the component to remove convexity is strengthened. Therefore, by swinging the boom here clockwise a suitable setting for removal of incoming paper with increasing convexity become. This setting is made using the Linkage 10 rigidly connected tooth segment 10a, which with the Pinion 14a of the actuator 14 is engaged.
- Fig. 4 shows a printer with integrated decurling units E, each in the paper paths of two printing units a fuser F are connected. Here is the Compactness of the decurling units E clearly.
- Fig. 5 shows a printer arrangement using roll paper R.
- the Dewatering unit E at the printer entrance behind the cutting unit S constantly adjusted.
- the winding diameter of the Roll of roll paper R is made using a rotary encoder D gripped with an extension lever and serves as the basis for controlling the stepping motor of the decurling unit E.
Landscapes
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Description
- Fig. 1
- eine schematische Darstellung des Entwölbungsvorgangs zeigt;
- Fig. 2
- eine Schnittansicht einer bevorzugten erfindungsgemäßen Entwölbungseinheit in einer ersten Einstellung zeigt;
- Fig. 3
- eine Schnittansicht der bevorzugten erfindungsgemäßen Entwölbungseinheit in einer zweiten Einstellung zeigt;
- Fig. 4
- einen Drucker mit integrierten Entwölbungseinheiten zeigt; und
- Fig. 5
- den Drucker nach Fig. 4 mit einer speziellen Rollenpapierzufuhr zeigt.
- 2
- Antriebsrolle
- 4
- Entwölbungsriemen
- 6
- Umlenkrolle
- 8
- Entwölbungswelle
- 10
- Gestänge
- 10a
- Zahnsegment
- 12
- Auslaufkontur
- 14
- Stellmotor
- 14a
- Ritzel
- E
- Entwölbungseinheit
- F
- Fixierstation
- R
- Rollenpapier
- S
- Schneideeinheit
- D
- Drehwinkelgeber
Claims (11)
- Entwölbungseinheit zur Entwölbung blattförmigen Trägermaterials, insbesondere von Papier, das eine gegebenenfalls konvexe oder konkave Wölbung entlang einer sich parallel zur Transportrichtung des Trägermaterials erstreckenden Richtung hat, wobei die Entwölbungseinheit (2, 4, 6, 8, 10, 12) ein Element (2, 4, 6, 8) zur Beseitigung von Konkavität in Serie mit einem Element (12) zur Beseitigung von Konvexität hat, die beide von dem zu entwölbenden Trägermaterial durchlaufen werden, dadurch gekennzeichnet, daß das Element (2, 4, 6, 8) zur Beseitigung der Konkavität verstellbar ist und mit dem gleichfalls verstellbaren Element (12) zur Beseitigung der Konvexität derart mechanisch gekoppelt ist, daß einerseits bei einer Zunahme der Wirkung des Elements (12) zur Beseitigung von Konvexität eine Abnahme der Wirkung des Elements (2, 4, 6, 8) zur Beseitigung von Konkavität und andererseits bei einer Abnahme der Wirkung des Elements (12) zur Beseitigung von Konvexität eine Zunahme der Wirkung des Elements (2, 4, 6, 8) zur Beseitigung von Konkavität auftritt.
- Entwölbungseinheit nach Anspruch 1, dadurch gekennzeichnet, daß das Element zur Beseitigung von Konkavität eine Entwölbungswelle (8) mit einer sich senkrecht zur Transportrichtung des Trägermaterials erstreckenden Drehachse ist, wobei die Entwölbungswelle (8) in einen oder mehrere parallel zueinander angeordnete, sie durch Haftreibung antreibende dehnbare Entwölbungsriemen (4) eintauchbar ist, die zwischen einer Antriebsrolle (2) und einer Umlenkrolle (6) für den oder die Entwölbungsriemen in der Transportrichtung des Trägermaterials aufgespannt sind, wobei sich die Drehachsen der Antriebsrolle (2) und der Umlenkrolle (6) ebenfalls senkrecht zur Transportrichtung des Trägermaterials erstrekken, so daß der oder die Entwölbungsriemen (4) in konvexer Form an der Entwölbungswelle (8) anliegt bzw. anliegen.
- Entwölbungseinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Element zur Beseitigung von Konvexität eine in der Transportrichtung des Trägermaterials konkav geformte Auslaufkontur (12) ist, die in den Transportweg des Trägermaterials einschwenkbar ist.
- Entwölbungseinheit nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das Element zur Beseitigung von Konkavität und das Element zur Beseitigung von Konvexität durch ein Gestänge (10) starr verbunden und miteinander um eine gemeinsame Drehachse A schwenkbar sind.
- Entwölbungseinheit nach Anspruch 4, dadurch gekennzeichnet, daß die Schwenkung des Gestänges (10) durch ein mit dem Gestänge starr verbundenes Zahnsegment (10a) über ein Ritzel (14a) eines Stellmotors (14) erfolgt.
- Entwölbungseinheit nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Entwölbungseinheit je nach dem anfänglichen Wölbungszustand des Trägermaterials automatisch nachregelbar ist.
- Entwölbungseinheit nach Anspruch 6, dadurch gekennzeichnet, daß die automatische Nachregelung in Abhängigkeit vom gewählten Druckmodus erfolgt.
- Entwölbungseinheit nach Anspruch 6, dadurch gekennzeichnet, daß die automatische Nachregelung in Abhängigkeit von der Qualität des Trägermaterials erfolgt.
- Entwölbungseinheit nach Anspruch 6, dadurch gekennzeichnet, daß die automatische Nachregelung in Abhängigkeit von einer Kombination aus dem anfängliche Wölbungszustand des Trägermaterials, dem gewählten Druckmodus und der Qualität des Trägermaterials erfolgt.
- Entwölbungseinheit nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die automatische Nachregelung durch Ansteuerung des Stellmotors (14) der Entwölbungseinheit erfolgt.
- Entwölbungseinheit nach Anspruch 10, dadurch gekennzeichnet, daß bei der Verwendung von aufgewickeltem Rollenpapier, das am Druckereingang geschnitten wird, der Durchmesser des Wickels erfaßt wird und auf der Grundlage des erfaßten Durchmessers der Stellmotor (14) der Entwölbungseinheit angesteuert wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19643667 | 1996-10-22 | ||
DE19643667 | 1996-10-22 | ||
PCT/DE1997/002419 WO1998017566A1 (de) | 1996-10-22 | 1997-10-20 | Entwölbungseinheit für trägermaterial |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0934223A1 EP0934223A1 (de) | 1999-08-11 |
EP0934223B1 true EP0934223B1 (de) | 2002-01-30 |
Family
ID=7809514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97946733A Expired - Lifetime EP0934223B1 (de) | 1996-10-22 | 1997-10-20 | Entwölbungseinheit für trägermaterial |
Country Status (4)
Country | Link |
---|---|
US (1) | US6199859B1 (de) |
EP (1) | EP0934223B1 (de) |
DE (2) | DE59706262D1 (de) |
WO (1) | WO1998017566A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6782822B2 (en) * | 2000-02-23 | 2004-08-31 | Agfa-Gevaert | Compact printing apparatus and method |
US6991130B2 (en) * | 2002-09-13 | 2006-01-31 | Avery Dennison Corporation | Versatile label sheet and dispenser |
US7128236B2 (en) * | 2002-09-13 | 2006-10-31 | Avery Dennison Corporation | Versatile label sheet and dispenser |
JP4162004B2 (ja) * | 2005-12-13 | 2008-10-08 | コニカミノルタビジネステクノロジーズ株式会社 | 画像形成装置、画像形成方法及びシート材搬送装置 |
JP4983623B2 (ja) * | 2008-01-29 | 2012-07-25 | Nkワークス株式会社 | デカール機構 |
JP2009179415A (ja) * | 2008-01-29 | 2009-08-13 | Noritsu Koki Co Ltd | ペーパー排出機構 |
DE102010016817A1 (de) | 2010-05-06 | 2011-11-10 | OCé PRINTING SYSTEMS GMBH | Anordnung zum Übertragen von Tonerbildern auf ein bahnförmiges Trägermaterial unter Verwendung eines vorbestimmten Umschlingungswinkels |
US11938699B2 (en) | 2021-07-07 | 2024-03-26 | Brown Llc | Methods and systems for producing pressware |
US11919270B2 (en) | 2021-07-07 | 2024-03-05 | Brown Llc | Methods and systems for producing pressware |
US11945670B2 (en) * | 2021-07-07 | 2024-04-02 | Brown Llc | Methods and systems for producing pressware |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2737089A (en) * | 1953-10-21 | 1956-03-06 | John R Baumgartner | Apparatus for decurling a web |
US4360356A (en) | 1980-10-15 | 1982-11-23 | The Standard Register Company | Decurler apparatus |
JPH03503878A (ja) * | 1988-01-15 | 1991-08-29 | イーエムエフ・コーポレーション | ペーパーシート仕分け装置 |
US4952281A (en) * | 1988-05-10 | 1990-08-28 | Kobayashi Engineering Works, Ltd. | Sheet curls reformer |
US5183454A (en) * | 1989-11-10 | 1993-02-02 | Hitachi Koki Co., Ltd. | Paper curl correction apparatus |
JPH04338060A (ja) * | 1991-05-14 | 1992-11-25 | Fuji Xerox Co Ltd | 用紙のカール低減装置 |
JPH05221574A (ja) * | 1991-08-14 | 1993-08-31 | Fuji Xerox Co Ltd | 用紙のカール補正装置 |
JP2737504B2 (ja) * | 1992-01-08 | 1998-04-08 | 日本電気株式会社 | ロール紙のカール解消装置 |
US5153662A (en) * | 1992-04-06 | 1992-10-06 | Xerox Corporation | Sheet decurling apparatus |
US5202737A (en) * | 1992-06-12 | 1993-04-13 | Xerox Corporation | Method and apparatus for decurling sheets in a copying device |
US5565971A (en) | 1994-10-03 | 1996-10-15 | Xerox Corporation | Pivotal bi-directional decurler |
US5539511A (en) * | 1994-12-16 | 1996-07-23 | Xerox Corporation | Multilevel/duplex image sheet decurling apparatus |
DE29503120U1 (de) * | 1995-02-24 | 1996-06-27 | Boewe Systec Ag | Glättvorrichtung für eine Papierbahn in einer papierverarbeitenden Maschine |
US5717836A (en) * | 1995-03-09 | 1998-02-10 | Matsushita Electric Industrial Co., Ltd. | Printing apparatus having a retractable curl removal member and reversible roller |
US6064853A (en) * | 1999-09-10 | 2000-05-16 | Lexmark International, Inc. | Apparatus for curling materials |
-
1997
- 1997-10-20 DE DE59706262T patent/DE59706262D1/de not_active Expired - Lifetime
- 1997-10-20 EP EP97946733A patent/EP0934223B1/de not_active Expired - Lifetime
- 1997-10-20 US US09/297,031 patent/US6199859B1/en not_active Expired - Fee Related
- 1997-10-20 DE DE19781151T patent/DE19781151D2/de not_active Ceased
- 1997-10-20 WO PCT/DE1997/002419 patent/WO1998017566A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE59706262D1 (de) | 2002-03-14 |
WO1998017566A1 (de) | 1998-04-30 |
US6199859B1 (en) | 2001-03-13 |
DE19781151D2 (de) | 1999-09-23 |
EP0934223A1 (de) | 1999-08-11 |
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