EP1291177A1 - Verfahren zur Steuerung der Übertragung einer Mediummenge zwischen zwei Walzen - Google Patents
Verfahren zur Steuerung der Übertragung einer Mediummenge zwischen zwei Walzen Download PDFInfo
- Publication number
- EP1291177A1 EP1291177A1 EP02018760A EP02018760A EP1291177A1 EP 1291177 A1 EP1291177 A1 EP 1291177A1 EP 02018760 A EP02018760 A EP 02018760A EP 02018760 A EP02018760 A EP 02018760A EP 1291177 A1 EP1291177 A1 EP 1291177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing
- roller
- speed
- anilox roller
- anilox
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title description 4
- 238000007639 printing Methods 0.000 claims abstract description 66
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000002966 varnish Substances 0.000 claims abstract description 6
- 238000007774 anilox coating Methods 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 17
- 239000003973 paint Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010020 roller printing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/004—Driving means for ink rollers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/32—Means to vary the time of contact of one or more rollers in an ink train
Definitions
- the invention relates to a method for controlling an anilox roller Printing machine transferable to a roller in contact with this Medium amount, according to the preamble of claim 1.
- Short inking units for example anilox short inking units, are known which are used in Printing machines are used (DE 198 40 613 A1). These include one as well Anilox roller called anilox roller, which has on its circumferences, the can be filled with paint or varnish. A chambered doctor blade is assigned to the anilox roller the anilox roller scrapes off. The anilox roller interacts with an inking roller, to which a constant amount of paint / varnish is transferred due to the depressions. at an increase in printing or machine speed occurs due to the Usually highly viscous offset ink a slight drop on a substrate measured color density.
- the printed color density also known as optical density, in anilox inking units to influence, it is known to slip between the anilox roller and the To influence the inking roller. If the two rollers are the same Circumferential speeds, so there is no slippage, is the Ink transfer from the anilox roller to the ink transfer roller optimal. When a There is slippage between these rollers, the printed color density decreases as a result of that getting smaller, transferred from the anilox roller to the inking roller Amount of paint.
- a method having the features of claim 1 proposed. It provides for the amount of medium that an anilox roller provides Printing machine to a roller in contact with it, for example Ink roller, is transferable by influencing one To control circumferential speed difference between anilox roller and roller.
- the process is characterized in that the circumferential speed difference in Controlled as a function of the printing / machine speed of the printing press is that the printed medium density at least in a wide Print speed range remains constant or approximately constant. This can ensure that the medium transfer from the anilox roller to the subsequent roller is consistently good at almost all printing speeds.
- the "printed Medium density” is understood to mean the density that is transferred to a printing material Has printed image. It is also known as optical density. Under “printed Medium density “does not mean the material density of the printing medium.
- the printing press can be a sheet-fed or web-fed press which is used in wet offset or Dry offset is operated.
- the medium is preferably liquid, but can also be pasty and is preferably a paint or varnish.
- the circumferential speed difference at a standard print speed and preferably at one Print speed is greater than the standard print speed is zero.
- the default print speed is the speed at which the Printing press mainly works. For example, in an arch machine 2.5 m / s and 9 m / s for a rotary machine. In this variant The process is tolerated at above the standard print speed speed range, the printed medium density is no longer exactly constant is held. Most of the time the printing unit can do this without slipping work between the rollers. The wear on the rollers is correspondingly low here.
- a circumferential speed difference between the anilox roller and the subsequent one Roller also occurs here during the setup of the printing press, that is, during the Begins processing a print job and while the press is on Standard print speed is accelerated up. This period is compared to the The processing time for the entire print job is relatively short.
- a method can also be easily implemented in which the circumferential speed difference is zero at the maximum print / press speed.
- the printed medium density would be smaller at all printing speeds maximum print speed constantly adjustable, but most of the time would be a There is slippage between the anilox roller and the subsequent roller, causing the Life of the rollers is reduced.
- the method in which Print speed dependent circumferential speed difference one characteristic curve is determined at which the printed medium density is constant remains.
- the characteristic curve can be determined, for example, by tests, for different printing speeds of the slip between the anilox roller and the subsequent roller is determined, which is necessary for the printed Medium density remains constant.
- a continuous characteristic curve can be determined for each Printing speed a new slip value (circumferential speed difference) or the printing speed required for each slip value specifies at which the printed medium density is constant.
- the present invention is also referred to as a function table under the term “characteristic curve” understood, the discrete slip values for different printing speed ranges indicates. So the same applies here for different printing speeds Slip value, that is, the printed medium density is within this Print speed range is not always exactly constant, but they influence it very much low density differences the printing result to an innocuous degree.
- the characteristic Characteristic curve is stored in a control device.
- the control device is used for the respective printing material or the Color / the varnish characteristic curve used to the slip (Peripheral speed difference) between the anilox roller and the subsequent one Adjust roller to different printing speeds, so that the printed one Color density or lacquer density at any printing speed less than that Standard print speed is constant.
- Figure 1 shows a section of an embodiment of a printing press 1, the Printing unit 3 and an inking unit 5 comprises.
- the inking unit 5 is here of a short inking unit, namely an anilox short inking unit formed and comprises an anilox roller 7 also referred to as an anilox roller, on the Perimeter depressions 9, for example cells or grooves, for receiving a liquid medium are introduced.
- the following is purely exemplary of this assumed that the medium is a liquid color.
- the inking unit 5 furthermore has a chambered doctor blade 11, with the aid of which the paint enters the recesses in the Anilox roller 7 is introduced and then the anilox roller peripheral surface is scraped off becomes.
- the chambered doctor blade 11 is connected via a line 15 connected to a reservoir 13 supplied with color. With the help of a pump 17, the paint from the reservoir 13 becomes Squeegee 11 pumped.
- the inking unit 5 also has a roller 19 which interacts with the anilox roller 7, which is formed for example by an ink transfer roller and an elastic Coat. “Interact” is understood here to mean that the anilox roller 7 and the roller 19 are in contact with each other and form a nip.
- a printing form 23 formed here by a plate cylinder 21 acts with the roller 19 together, which in turn is in contact with a rubber cylinder 25. From this one a printed image on a printing material 27, which is only indicated here, for example sheets or web, applied.
- the roller 19 and the plate cylinder 21 are of the same diameter.
- the The peripheral speed of the anilox roller 7 can be individually adjusted with respect to the roller 19 is, so that a slip between 0% and 10% can be realized.
- This can - as in Figure 1 indicated - done with the help of a separate motor drive 29 for the anilox roller 7.
- a superposition gear can be provided, the drive mostly done via a gear connection with the roller 19 and in which only the Differential peripheral speed between the anilox roller 5 and the roller 19 through a comparatively small motor is additionally coupled.
- a third alternative consists in using an adjustable mechanical gear. Further Design variants for realizing a circumferential speed difference between Anilox roller 7 and roller 19 are possible.
- the anilox roller 7 is therefore provided with a Single drive equipped. Furthermore, one is arranged on the rubber cylinder 25 Speed sensor 31 provided the current printing / machine speed via a signal line 33 of a schematically illustrated control device 35 reports. Alternatively, the signal for the current printing / machine speed also directly from a main drive motor, not shown, of the printing press 1 or the printing unit 3 come.
- a characteristic curve which is also referred to as a run-up curve, is stored in the control device 35 and specifies the required circumferential speed difference between the anilox roller 7 and the roller 19 as a function of the current printing speed (v M ), at which the printed / optical color density remains constant ,
- the associated slip of the anilox roller 7 is thus queried from the characteristic curve and then the corrected speed (v 7 ) for driving the anilox roller 7, that is to say the motor drive 29 connected to the control device 35 via a signal line 37, is specified.
- Figure 2 shows a diagram in which on the axis of abscissas the pressure / machine speed v and on the ordinate axis the slip s, i.e. the Circumferential speed difference between the anilox roller 7 and the subsequent one Roller 19 is applied in percent.
- a curve 39 is drawn in the diagram, the required circumferential speed difference at each printing speed between the anilox roller 7 and the roller 19 indicates so that the optical density of the between the rollers 7, 19 to be transferred color or on the Printing material printed material preferably constant, but at least in the frame a low tolerance is approximately constant.
- the slip s is relatively high at a low printing speed v and decreases with increasing printing speed v until it finally approaches zero or is zero at a standard printing speed v n .
- the standard print speed is the speed at which the press mainly works. Even with a further increase in the printing speed to the maximum printing speed v max , the slip s remains unchanged at zero. If the peripheral speed difference between the anilox roller 5 and the roller 19 is controlled along the characteristic curve 39, which can easily be done with the aid of the control device 35, a constant optical color density in the range between a minimum printing speed and the standard printing speed v n can be achieved ,
- FIG. 3 shows a diagram in which the printing / machine speed v is plotted on the abscissa axis and the optical density D v of the ink to be transferred from the anilox roller 7 to the roller 19 is plotted on the ordinate axis.
- a solid line 41 the course of the optical density is shown as it results from a regulation or control of the slip between the rollers 7, 19 described with reference to FIG. 2. It becomes clear that the optical density is constant up to the standard printing speed v n and drops a little in the above speed range up to the maximum printing speed v max . The reason for this is that the slip s remains zero even for printing speeds greater than the standard printing speed.
- the color density level realized by the peripheral speed difference control according to the invention is below that when no slip control, as described with reference to FIG. 2, is carried out.
- the slip s that is to say the difference in peripheral speed between the anilox roller 7 and the inking roller 19 for each printing speed v, is predetermined by the characteristic curve 39, so that the optical density D v at all printing speeds v is less than the standard Printing speed v n is constant. If the characteristic curve 39 is stored in the control device 35, an intervention by the operating personnel to set the circumferential speed difference required in each case is preferably not, at most necessary for manual fine adjustment.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Printing Methods (AREA)
- Coating Apparatus (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
- Figur 1
- einen Ausschnitt eines Ausführungsbeispiels einer Druckmaschine in Seitenansicht;
- Figur 2
- ein Diagramm, bei dem auf der Abszissenachse die Druck-/Maschinengeschwindigkeit und auf der Ordinatenachse der Schlupf zwischen einer Rasterwalze und einer nachfolgenden Walze aufgetragen ist; und
- Figur 3
- ein Diagramm, bei dem auf der Abszissenachse die Druck-/Maschinengeschwindigkeit und auf der Ordinatenachse die gedruckte Farbdichte aufgetragen ist.
Claims (8)
- Verfahren zur Steuerung einer von einer Rasterwalze (7) einer Druckmaschine (1) an eine mit der Rasterwalze (7) in Kontakt stehende Walze (19) übertragbaren Mediummenge, insbesondere Farb- oder Lackmenge, durch Beeinflussung einer Umfangsgeschwindigkeitsdifferenz zwischen Rasterwalze (7) und Walze (19),
dadurch gekennzeichnet, dass die Umfangsgeschwindigkeitsdifferenz in Abhängigkeit von der Druckgeschwindigkeit (v) der Druckmaschine (1) so gesteuert wird, dass die gedruckte Mediumdichte (Dv) zumindest in einem breiten Druckgeschwindigkeitsbereich konstant oder in etwa konstant bleibt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass Umfangsgeschwindigkeitsdifferenz bei einer Standard-Druckgeschwindigkeit (vn) und vorzugsweise bei einer Druckgeschwindigkeit größer der Standard-Druckgeschwindigkeit (vn) null ist. - Verfahren nach einem der vorhergehenden Ansprüche 1 und 2,
dadurch gekennzeichnet, dass für die Druckgeschwindigkeit (v) abhängige Umfangsgeschwindigkeitsdifferenz eine charakteristische Kennlinie (39) ermittelt wird, bei der die gedruckte Mediumdichte konstant bleibt. - Verfahren nach Anspruch 3,
dadurch gekennzeichnet, dass die charakteristische Kennlinie (39) in einer Steuereinrichtung (35) abgespeichert wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Umfangsgeschwindigkeitsdifferenz in Abhängigkeit von einer Umfangsgeschwindigkeit eines mittels der Rasterwalze (7) mit dem Medium versorgbaren Druckform- oder Gummituchzylinders gesteuert wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die gedruckte Mediumdichte durch eine Erhöhung der Rasterwalzentemperatur angehoben wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die gedruckte Mediumdichte durch ein Absenken der Rasterwalzentemperatur abgesenkt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das Medium eine Farbe oder ein Lack ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10143827 | 2001-09-07 | ||
| DE10143827A DE10143827A1 (de) | 2001-09-07 | 2001-09-07 | Verfahren zur Steuerung der Übertragung einer Mediummenge zwischen zwei Walzen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1291177A1 true EP1291177A1 (de) | 2003-03-12 |
| EP1291177B1 EP1291177B1 (de) | 2005-11-09 |
Family
ID=7698001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02018760A Expired - Lifetime EP1291177B1 (de) | 2001-09-07 | 2002-08-22 | Verfahren zur Steuerung der Übertragung einer Mediummenge zwischen zwei Walzen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6668724B2 (de) |
| EP (1) | EP1291177B1 (de) |
| JP (1) | JP2003094606A (de) |
| CN (1) | CN1273296C (de) |
| AT (1) | ATE309096T1 (de) |
| CZ (1) | CZ20022277A3 (de) |
| DE (2) | DE10143827A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1291176A3 (de) * | 2001-09-11 | 2004-01-07 | Heidelberger Druckmaschinen Aktiengesellschaft | Druckmaschine und Verfahren zum Betreiben eines Farbwerks |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004044215B4 (de) * | 2004-05-25 | 2008-03-13 | Koenig & Bauer Aktiengesellschaft | Verfahren zur Einstellung einer Übertragung von Druckfarbe |
| EP1728628A1 (de) * | 2005-06-01 | 2006-12-06 | Kba-Giori S.A. | Hochdruckmaschine mit separaten Antriebe |
| CN1939721B (zh) | 2005-09-27 | 2010-12-15 | 海德堡印刷机械股份公司 | 用于对印刷机调节温度的方法 |
| DE102006040746B4 (de) * | 2005-09-27 | 2017-04-27 | Heidelberger Druckmaschinen Ag | Verfahren zum Temperieren einer Druckmaschine |
| FR2892661B1 (fr) * | 2005-11-03 | 2008-02-01 | Goss Int Montataire Sa | Procede de reglage de la quantite d'encre appliquee sur un produit a imprimer et dispositif correspondant. |
| DE102008015531A1 (de) | 2008-03-25 | 2009-10-01 | Koenig & Bauer Aktiengesellschaft | Kurzfarbwerk für eine Rotationsdruckmaschine |
| CN102039725B (zh) * | 2009-10-21 | 2014-12-17 | 海德堡印刷机械股份公司 | 用于在具有网纹辊短输墨装置的印刷机中调整色差的方法 |
| CN102085743B (zh) * | 2009-12-04 | 2014-04-09 | 海德堡印刷机械股份公司 | 印刷装置 |
| DE102011008592B4 (de) * | 2010-02-08 | 2022-08-18 | Heidelberger Druckmaschinen Ag | Farbsteuerung für Druckmaschinen mit Kurzfarbwerk |
| JP5903876B2 (ja) * | 2011-12-21 | 2016-04-13 | 大日本印刷株式会社 | フレキソ印刷用インキ供給装置 |
| GB2512769B (en) * | 2011-12-23 | 2018-08-01 | Security Printing Inst Of Peoples Bank Of China | Method and apparatus for ink transfer and supply and printing equipment having the apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4445433A (en) * | 1982-04-02 | 1984-05-01 | Menashe Navi | Method and apparatus for variable density inking |
| JPS63222853A (ja) * | 1987-03-12 | 1988-09-16 | Mitsubishi Heavy Ind Ltd | 印刷機のインキング方法 |
| DE4431464A1 (de) * | 1994-09-03 | 1996-03-07 | Koenig & Bauer Albert Ag | Kurzfarbwerk |
| DE19840613A1 (de) | 1998-09-05 | 2000-03-09 | Koenig & Bauer Ag | Kurzauftragwerk |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2986088A (en) * | 1957-10-10 | 1961-05-30 | Miehle Goss Dexter Inc | Inking arrangement for rotary printing press |
| US3285169A (en) * | 1965-05-28 | 1966-11-15 | Hans H Hartwig | Apparatus and method for flexographic printing with doctor roll ink control |
| CH509156A (de) * | 1969-08-09 | 1971-06-30 | Roland Offsetmaschf | Feuchteinrichtung für lithographische Druckmaschinen |
| DE2360611A1 (de) * | 1973-12-05 | 1975-06-19 | Grapho Metronic Gmbh & Co | Farbwerk fuer druckmaschinen |
| DE2920152A1 (de) * | 1979-05-18 | 1980-11-27 | Maschf Augsburg Nuernberg Ag | Farbwerk fuer eine druckmaschine |
| US4479432A (en) * | 1980-05-15 | 1984-10-30 | Toppan Printing Co., Ltd. | Thick film printing method |
| DE3117341C2 (de) * | 1981-05-02 | 1988-07-07 | Albert-Frankenthal Ag, 6710 Frankenthal | Farbwerk |
| US5224422A (en) * | 1992-03-17 | 1993-07-06 | John Marozzi | Flexographic printing system |
| DE4401365A1 (de) * | 1994-01-18 | 1995-07-20 | Roland Man Druckmasch | Vorrichtung zur Einfärbung einer Rasterwalze |
| DE19840602A1 (de) * | 1998-09-05 | 2000-03-09 | Koenig & Bauer Ag | Verfahren zur Beeinflussung der Übertragungsrate |
| DE19840603A1 (de) * | 1998-09-05 | 2000-03-09 | Koenig & Bauer Ag | Übertragungssystem |
| US6272986B1 (en) * | 1999-10-15 | 2001-08-14 | Howard W. DeMoore | Retractable impression cylinder inking/coating apparatus having ferris movement between printing units |
-
2001
- 2001-09-07 DE DE10143827A patent/DE10143827A1/de not_active Withdrawn
-
2002
- 2002-06-28 CZ CZ20022277A patent/CZ20022277A3/cs unknown
- 2002-07-31 CN CN02127159.3A patent/CN1273296C/zh not_active Expired - Fee Related
- 2002-08-22 EP EP02018760A patent/EP1291177B1/de not_active Expired - Lifetime
- 2002-08-22 DE DE50204837T patent/DE50204837D1/de not_active Expired - Lifetime
- 2002-08-22 AT AT02018760T patent/ATE309096T1/de not_active IP Right Cessation
- 2002-09-06 JP JP2002261564A patent/JP2003094606A/ja active Pending
- 2002-09-09 US US10/237,542 patent/US6668724B2/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4445433A (en) * | 1982-04-02 | 1984-05-01 | Menashe Navi | Method and apparatus for variable density inking |
| JPS63222853A (ja) * | 1987-03-12 | 1988-09-16 | Mitsubishi Heavy Ind Ltd | 印刷機のインキング方法 |
| DE4431464A1 (de) * | 1994-09-03 | 1996-03-07 | Koenig & Bauer Albert Ag | Kurzfarbwerk |
| DE19840613A1 (de) | 1998-09-05 | 2000-03-09 | Koenig & Bauer Ag | Kurzauftragwerk |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 013 (M - 783) 12 January 1989 (1989-01-12) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1291176A3 (de) * | 2001-09-11 | 2004-01-07 | Heidelberger Druckmaschinen Aktiengesellschaft | Druckmaschine und Verfahren zum Betreiben eines Farbwerks |
| US6745689B2 (en) | 2001-09-11 | 2004-06-08 | Heidelberger Druckmaschinen Ag | Printing press having an inking unit and method of operating an inking unit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10143827A1 (de) | 2003-03-27 |
| JP2003094606A (ja) | 2003-04-03 |
| US6668724B2 (en) | 2003-12-30 |
| EP1291177B1 (de) | 2005-11-09 |
| CN1406751A (zh) | 2003-04-02 |
| HK1054529A1 (zh) | 2003-12-05 |
| CN1273296C (zh) | 2006-09-06 |
| ATE309096T1 (de) | 2005-11-15 |
| CZ20022277A3 (cs) | 2003-04-16 |
| DE50204837D1 (de) | 2005-12-15 |
| US20030056674A1 (en) | 2003-03-27 |
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Legal Events
| Date | Code | Title | Description |
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