EP1208953A2 - Mittel zur Dekoration - Google Patents

Mittel zur Dekoration Download PDF

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Publication number
EP1208953A2
EP1208953A2 EP01118519A EP01118519A EP1208953A2 EP 1208953 A2 EP1208953 A2 EP 1208953A2 EP 01118519 A EP01118519 A EP 01118519A EP 01118519 A EP01118519 A EP 01118519A EP 1208953 A2 EP1208953 A2 EP 1208953A2
Authority
EP
European Patent Office
Prior art keywords
decorating
supports
belt
flexographic
sleeve
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Withdrawn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
EP01118519A
Other languages
English (en)
French (fr)
Other versions
EP1208953A3 (de
Inventor
Valdo Vittorio Elmetti
Giancarlo Fiandri
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.)
Tecno Europa SRL
Original Assignee
Tecno Europa SRL
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
Priority claimed from IT2000MO000170 external-priority patent/IT1317084B1/it
Priority claimed from IT2000MO000174 external-priority patent/IT1317085B1/it
Application filed by Tecno Europa SRL filed Critical Tecno Europa SRL
Publication of EP1208953A2 publication Critical patent/EP1208953A2/de
Publication of EP1208953A3 publication Critical patent/EP1208953A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/10—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the liquid or other fluent material being supplied from inside the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/001—Applying decorations on shaped articles, e.g. by painting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/046—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/047—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers by pooring, e.g. curtain coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2215/00—Screen printing machines
    • B41P2215/50—Screen printing machines for particular purposes
    • B41P2215/56—Screen printing machines for particular purposes for printing ceramic tiles

Definitions

  • the invention relates to decorating means for decorating flat elements and an apparatus for decorating ceramic supports, particularly ceramic supports shaped as special components.
  • the decorating means comprises a tubular sleeve provided with openings through which a flowing decorating product may pass, the openings being arranged so as to form a decoration on a flat element underlying said sleeve.
  • Know decorating means comprises silk-screen machines, each of which having a printing head in which a drum silk-screen - made of tissue - is mounted, through openings arranged for forming a decorating pattern being obtained in said drum silk-screen.
  • a certain amount of decorating glaze is brought to the internal surface of the silk-screen in a position placed immediately upstream a doctor blade internally supported to the silk-screen, so that said doctor blade may press the glaze through the openings of the silk-screen and carry out the desired decoration of the underlying tile.
  • sucking means is provided which clears this no more usable portion of powdery glaze.
  • doctor blade - during working of the machine crawls on the internal surface of the silk-screen, said doctor blade contributes, during the time, to remarkably wear the silk-screen, which makes necessary to substitute the silk-screen quite regularly.
  • Special components are usually meant as ceramic supports having quite complex and not substantially flat shape, unlike the usual tiles; said special components may include, as an example, finishing elements for steps provided with a toric profiled edge and called, therefore, "torelli".
  • wet silk-screen machines are known arranged for depositing on said supports a layer of glaze according to a pre-established drawing printed on the printing silk-screens with which said silk-screen machine are provided.
  • These machines use flat silk-screens and are further provided with spreader means suitable for transferring the glaze to pre-established areas of the ceramic supports through the meshes of the silk-screen.
  • the spreader means partially deforms the silk-screens for causing the silk-screens to adhere to such surfaces so allowing the special component to be decorated in any part thereof.
  • the decals Before being applied on the ceramic supports, the decals have to be dipped in water for being cleared from sheets with which they are provided, said sheets acting as support and protection for the decals.
  • the decals cleared from the respective support sheets are extremely delicate and need to be handled with high care.
  • This decorating system even if allows satisfying aesthetic results to be obtained, has the drawback of involving remarkable waste of time and need of manpower.
  • Devices for decorating flat ceramic supports, for example tiles, provided with a flexographic roller carrying on the external surface thereof the drawing which has be reproduced on the supports.
  • a pressing element arranged internally to the roller so as to press said roller against the ceramic supports, promotes transferring of the glaze from the surface of the roller to the upper surface of the ceramic supports.
  • a further drawback of such devices is that the flexographic rollers with which said devices are provided are fixed to supporting frames, usually of circular shape, which limit the deformability thereof so making very difficult, or even impossible, decorating supports shaped as ceramic special components.
  • An object of the invention is to improve the known decorating means for decorating flat elements.
  • a further object of the invention is to reduce the glaze waste in dry silk-screen machines for decorating ceramic tiles.
  • a still further object is to reduce the wear of the decorating means in dry silk-screen machines for decorating ceramic tiles.
  • Still a further object of the present invention is to improve the known apparatuses for decorating ceramic supports shaped as special components.
  • a further object of the invention is to obtain an apparatus for decorating ceramic special components in a simple way and with low need of manpower.
  • a still further object of the invention is to obtain an apparatus for decorating ceramic special components in an aesthetically very accurate manner and with high productivity.
  • decorating means for decorating flat elements in particular ceramic tiles, is provided, comprising a tubular sleeve provided with openings through which a flowing decorating product may pass, said openings being arranged so as to form a decoration on a flat element underlying said sleeve, characterised in that said sleeve is made of rigid material.
  • the stiffness of the sleeve gives a particularly resistant structure to the decorating means, suitable for being subjected to a high number of working cycles without wearing.
  • an apparatus for decorating ceramic supports comprising flexographic belt decorating means arranged to form a loop and suitable for transferring on the surface of said supports flowing decorating means according to a pre-established pattern, said fluid decorating means being initially contained in cavities of said flexographic belt decorating means, conveyor means suitable for moving said supports along an advancing direction for causing said supports to interact with said flexographic belt decorating means, actuating means suitable for rotating said flexographic belt decorating means around an axis perpendicular to said advancing direction, pressing means arranged internally to said flexographic belt decorating means and suitable for promoting transferring of said fluid decorating means to said supports.
  • the flexographic belt decorating means is made of elastomeric material provided with high deformability, such as silicone rubber.
  • the pressing means comprises surfaces suitable for coupling with variously shaped profiled portions of ceramic supports, such as the surfaces of the special components, so allowing such supports to be perfectly decorated even in the areas which are normally difficult to be reached.
  • the pressing means comprises roller means provided with a groove suitable for being shapingly coupled to the profiled portion of said supports so causing the glaze to be perfectly transferred from the flexographic belt decorating means to the supports in any part thereof.
  • the pressing means comprises roller means made of easily deformable material and, therefore, suitable for conforming according to said profiled portion, so pressing on said profiled portion the flexographic belt decorating means for promoting transferring of the fluid decorating means.
  • the pressing means comprises a plurality of wheels freely rotatable around axes perpendicular to the advancing direction of the ceramic supports and arranged at mutually angularly staggered positions so as to substantially angularly cover the whole profile of the ceramic supports for causing the flexographic belt decorating means to adhere to said ceramic supports.
  • the actuating means comprises driving roller means and driven roller means, between which the flexographic belt decorating means is tightened; the driving roller means and driven roller means is provided, at the ends thereof, with gearwheels suitable for engaging respective toothed belts coupled to the internal surface of the flexographic belt decorating means.
  • the actuating means comprises driving roller means and driven roller means, between which the flexographic belt decorating means is tightened; the driving roller means and driven roller means is provided, at the ends thereof, with a plurality of peg means, radially extending from the surface of the driving roller means and the driven roller means and suitable for engaging respective holes obtained in the end portions of the flexographic belt decorating means.
  • the driving roller means, or the driven roller means also acts as contrast means for a doctor blade arranged for removing from the external surface of the flexographic belt decorating means the exceeding amount of fluid decorating means.
  • a printing head 1 of a decorating machine for decorating ceramic tiles 2 moving on a conveying line, not shown, along a horizontal direction shown by the arrow F comprises a tubular, cylindrical sleeve 3, having longitudinal ends secured to flanges 4 which may be coupled with rotating means of a standard silk-screen machine of known type and therefore not shown.
  • the sleeve 3 may have a working central section 5 having thickness thinner than the remaining end regions, or a uniform thickness through the entire axial extension thereof.
  • the central working section 5 comprises a decorating region 6, having a plane extension corresponding to the surface of the tiles 2 to be decorated, the decorating region 6 comprising a plurality of through holes 7 distributed according to the decorating pattern to be transferred on the surface of the tiles 2 to be decorated.
  • the decorating pattern may have the most various shape and extension, for example for defining a figurative or abstract pattern on the tiles 2, for example a pattern of veins for imitating the effect of natural stones.
  • a same sleeve 3 may have only one decorating region 6, or even more regions 6, as a function of the ratio between the diameter of the sleeve 3 and the extension of each tile 2 along the direction F.
  • a supporting bar 8 Inside the sleeve 3 there is arranged a supporting bar 8 to which a container 9 is fixed having form of hopper inside which powdery glaze for decorating the tiles 2 is contained.
  • the container 9 is delimited by lateral walls arranged approximately at the longitudinal ends of the sleeve 3, by a fixed front wall 10 and by a rear wall 11 whose position may be angularly adjusted around an axis 12.
  • the front wall 10 ends downwardly with a doctor blade 13 defining with the lower edge of the back wall 11 an outlet of the container 9 through which the powdery glaze is put in contact with the sleeve 3 and comes out from the openings 7, when said openings 7 are present, or is kept into the container 9 in the regions of the sleeve 3 which are not provided with openings.
  • the sleeve 3 is rotated around the longitudinal axis thereof in a direction F1 concurrent with the advancing direction F of the tiles 2.
  • a tile 2 being advanced under the sleeve 3 along the direction F in the working region 5 of said sleeve 3 without touching said sleeve 3, is loaded with powdery glaze only in the regions forming the decorating pattern of said tile.
  • sucking means provided downstream the doctor blade 13 for removing the exceeding glaze is no more necessary - as it happens in the known devices - since, as the sleeve 5 of rigid material is adopted, no leakage of glaze takes place between the doctor blade 13 and the sleeve 3.
  • an apparatus 14 for decorating ceramic special components 15, provided with at least a profiled portion 15a ( Figure 4), said ceramic special components 15 being advanced along a transferring line 16, provided with belts 17, in the direction indicated by the arrow F2.
  • the apparatus 14 comprises a printing belt 18 having the external surface 18a engraved so as to obtain on said external surface 18a a plurality of cavities arranged according to a pre-established pattern and suitable for decorating the supports 15 interacting with said printing belt 18 by transferring on said supports a ceramic glaze.
  • the belt 18 consists of a material impermeable to the glaze and elastically deformable, in particular said belt 18 may be made of silicone rubber. Said cavities may be obtained on the external surface 18a of the belt 18 engraving said external surface 18a by means of a laser beam, said cavities having, therefore, pre-established position and geometry.
  • the belt 18 is rotated by actuating means 19 so as to be synchronised with the advancing speed of the supports 15 along the transferring line 16; thereby a rolling contact without friction is obtained between the belt 18 and the supports 15, which allows the glaze to be perfectly transferred to the supports 15 for obtaining decorations provided with a high degree of definition and free from defects or flaws.
  • the actuating means 19 comprises a driving roller 20 and an idle roller 21 around which the belt 28 is closed so as to form a loop.
  • pressing means 22 Internally to the belt 18, pressing means 22 is arranged suitable for promoting transferring of the ceramic glaze from the cavities of the belt 18 to the supports 15; such pressing means causes the belt 18 to adhere to the surface of the supports 15 at any point thereof and in particular at the profiled portion 15a.
  • the position of the pressing means 22 with respect to the supports 15 may be vertically adjusted translating the pressing means 22 along to the direction of the arrow F3, which allows the intensity of the force with which the belt 18 is pressed on the supports 15 to be varied, so allowing the printing conditions to be adjusted for obtaining the desired result.
  • the apparatus 14 further comprises feeding means 23 suitable for distributing a layer of ceramic glaze on the belt 18; doctor blade means 24 is associated with the feeding means 23, suitable for allowing the cavities of the belt 18 to be properly filled and for removing from the external surface 18a of the belt 18 exceeding glaze and possible particles which would be able to dirty the belt 18, deteriorating the printing quality on the supports 15.
  • the feeding means 23 and the doctor blade means 24 are arranged near the driving roller 20 so that the driving roller 20 acts as a contrast element for the doctor blade means 24, providing stiffness to the belt 18 wound thereon.
  • the pressing means 22 comprises a plurality of wheels 25 freely rotatable around axes perpendicular to the advancing direction F2 of the ceramic supports 15 and arranged at mutually angularly staggered positions so as to substantially angularly cover the entire profile of the ceramic supports 15.
  • pressing means 22 is shown obtained according to another version, comprising a roller 26 supported idle to rotate, around an axis perpendicular to the advancing direction F2 of the supports 15 on the transferring line 16, to supporting parts - not shown - of the apparatus 14.
  • the roller 26 comprises a groove 27 suitable for being shapingly coupled to the profiled portion 15a of the supports 15; the belt 18 is then caused to perfectly adhere to the supports 15 obtaining in any part of said supports 15 a qualitatively highly valuable decoration.
  • pressing means is shown, obtained according to another version, comprising a further roller 28 supported idle to rotate, around an axis perpendicular to the advancing direction F2 of the supports 15 on the transferring line 16, to supporting parts - not shown - of the apparatus 14.
  • the further roller 15 is made of soft material and, therefore, is suitable for being deformed according to the profile of the supports 15 for pressing the roller means against the supports 15 therefore allowing printing with a good quality even in the areas where printing involves greater difficulties, such as the profiled portion 15a of the supports 15.
  • the actuating means 19 comprises the driving roller 20 and a driven roller, not shown, between which the belt 18 is tightened.
  • driving roller 20 and driven roller are provided, at the ends thereof, with gearwheels 29 engaged by respective toothed belts 30 fixed to the internal surface 18b of the belt 18.
  • the driving roller means 20 and driven roller means comprise, at the end regions thereof, a plurality of peg means 31, radially extending from the surface of the driving roller means 20 and the driven roller means and suitable for engaging respective holes 32 obtained in the end portions of the belt 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Printing Methods (AREA)
EP01118519A 2000-08-02 2001-08-01 Mittel zur Dekoration Withdrawn EP1208953A3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMO000170 2000-08-02
IT2000MO000170 IT1317084B1 (it) 2000-08-02 2000-08-02 Mezzi per decorare elementi piatti.
ITMO000174 2000-08-09
IT2000MO000174 IT1317085B1 (it) 2000-08-09 2000-08-09 Apparato per decorare supporti ceramici.

Publications (2)

Publication Number Publication Date
EP1208953A2 true EP1208953A2 (de) 2002-05-29
EP1208953A3 EP1208953A3 (de) 2003-07-23

Family

ID=26332795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118519A Withdrawn EP1208953A3 (de) 2000-08-02 2001-08-01 Mittel zur Dekoration

Country Status (1)

Country Link
EP (1) EP1208953A3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249325A2 (de) * 2001-04-12 2002-10-16 Tecno - Europa S.R.L. Verfahren zum Herstellen eines Siebkörpers
EP1882572A2 (de) * 2006-07-28 2008-01-30 Tecno-Italia S.R.L. Verfahren und Vorrichtung zum Dekorieren von Objekten
ITMI20081943A1 (it) * 2008-11-04 2010-05-05 Giovanni Sala Impianto di decorazione per tecnologia polvere su polvere
CN103419277A (zh) * 2013-08-02 2013-12-04 陈学军 一种彩砖瓦表面喷浆机
CN103481643A (zh) * 2013-08-29 2014-01-01 连云港鹰游纺机有限责任公司 纺织品大图案的连续印花装置
CN108481529A (zh) * 2018-03-26 2018-09-04 佛山市东鹏陶瓷有限公司 一种用于产生波纹纹理装饰的设备及其波纹砖

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858507A (en) * 1973-04-09 1975-01-07 Cranston Print Works Co Cylindrical stencil with plastic end rings
US4026208A (en) * 1973-11-21 1977-05-31 Raylar Corporation Rotary printing screen having heat-shrunk support members
EP0816072A1 (de) * 1996-06-28 1998-01-07 Serigrafica Tosi S.r.l. Verfahren zum Herstellen einer Rotationssiebdruckschablone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858507A (en) * 1973-04-09 1975-01-07 Cranston Print Works Co Cylindrical stencil with plastic end rings
US4026208A (en) * 1973-11-21 1977-05-31 Raylar Corporation Rotary printing screen having heat-shrunk support members
EP0816072A1 (de) * 1996-06-28 1998-01-07 Serigrafica Tosi S.r.l. Verfahren zum Herstellen einer Rotationssiebdruckschablone

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249325B1 (de) * 2001-04-12 2005-12-21 Tecno - Europa S.R.L. Verfahren zum Herstellen eines Siebkörpers
EP1249325A2 (de) * 2001-04-12 2002-10-16 Tecno - Europa S.R.L. Verfahren zum Herstellen eines Siebkörpers
EP1882572A3 (de) * 2006-07-28 2010-11-24 Tecno-Italia S.R.L. Verfahren und Vorrichtung zum Dekorieren von Objekten
EP1882572A2 (de) * 2006-07-28 2008-01-30 Tecno-Italia S.R.L. Verfahren und Vorrichtung zum Dekorieren von Objekten
ITMI20081943A1 (it) * 2008-11-04 2010-05-05 Giovanni Sala Impianto di decorazione per tecnologia polvere su polvere
EP2181776A3 (de) * 2008-11-04 2010-06-23 Giovanni Sala Dekorationssystem für Pulver-auf-Pulver-Technik
EP2181776A2 (de) * 2008-11-04 2010-05-05 Giovanni Sala Dekorationssystem für Pulver-auf-Pulver-Technik
CN103419277A (zh) * 2013-08-02 2013-12-04 陈学军 一种彩砖瓦表面喷浆机
CN103419277B (zh) * 2013-08-02 2015-12-09 陈学军 一种彩砖瓦表面喷浆机
CN103481643A (zh) * 2013-08-29 2014-01-01 连云港鹰游纺机有限责任公司 纺织品大图案的连续印花装置
CN103481643B (zh) * 2013-08-29 2016-03-30 江苏鹰游纺机有限公司 纺织品大图案的连续印花装置
CN108481529A (zh) * 2018-03-26 2018-09-04 佛山市东鹏陶瓷有限公司 一种用于产生波纹纹理装饰的设备及其波纹砖
CN108481529B (zh) * 2018-03-26 2024-02-06 佛山市东鹏陶瓷有限公司 一种用于产生波纹纹理装饰的设备及其波纹砖

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