EP0870622A1 - Tintenstrahldrucker mit einem verbesserten Kühlsystem - Google Patents

Tintenstrahldrucker mit einem verbesserten Kühlsystem Download PDF

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Publication number
EP0870622A1
EP0870622A1 EP98300470A EP98300470A EP0870622A1 EP 0870622 A1 EP0870622 A1 EP 0870622A1 EP 98300470 A EP98300470 A EP 98300470A EP 98300470 A EP98300470 A EP 98300470A EP 0870622 A1 EP0870622 A1 EP 0870622A1
Authority
EP
European Patent Office
Prior art keywords
printhead
support bar
cooling
channel
cooling medium
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Withdrawn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
EP98300470A
Other languages
English (en)
French (fr)
Inventor
Jeffrey D. Barner
Fredrick A. Warner
Donald J. Drake
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.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0870622A1 publication Critical patent/EP0870622A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377—Cooling or ventilating arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/08—Embodiments of or processes related to ink-jet heads dealing with thermal variations, e.g. cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/21—Line printing

Definitions

  • the present invention relates to ink jet printing, and more particularly to a system for cooling ink jet printheads during operation to maintain the printhead at an optimum temperature.
  • ink jet printers are of the partial width array scanning type wherein a printhead module, typically one inch in width and containing a plurality of ink ejecting nozzles or jets, is mounted on a carriage which is moved in a scanning direction perpendicular to the path of motion of a recording medium such as paper.
  • the printhead is in fluid communication with an ink supply cartridge. After each line scan by the printhead, the recording medium is advanced, and the printhead is scanned again across the medium.
  • a black only scanning printer is disclosed, for example, in U.S. Patent 5,136,305.
  • additional printhead modules and associated color ink jet cartridges are added to form a printer configuration of the type, for example, disclosed in 5,099,256.
  • Pagewidth ink jet printers are known in the art which utilize one or more full pagewidth array printbars.
  • a printbar is fixed in position adjacent to the path of the recording medium. Since there is no scan and re-scan time, a much higher print speed (on the order of 10:1) is enabled.
  • One full width print bar may be used for a black only system; additional full width color printbars may be added to enable a highlight or full color printer.
  • the darkness of the print varies with printhead temperature because the darkness depends on the size of the ejected drops.
  • the contrast of the image also varies with printhead temperature because the contrast depends on the size of the ejected drops.
  • the printed color varies with printhead temperature because the printed color depends on the size of all the primary color drops that create the printed color. If the printhead temperature varies from one primary color nozzle to another, the size of drops ejected from one primary color nozzle will differ from the size of the drops ejected from another primary color nozzle. The resulting printed color will differ from the intended color.
  • the printhead temperature When all the nozzles of the printhead have the same temperature but the printhead temperature increases or decreases as the page is printed, the colors at the top of the page will differ from the colors at the bottom of the page. To print text, graphics, or images of the highest quality, the printhead temperature must remain constant.
  • U.S. Patent 5,220,345 discloses a printhead temperature control system which places a plurality of temperature detectors at different positions and monitors the temperature differences to control ink supplied to the associated ink channels.
  • U.S. Patent 5,168,284 discloses a closed loop system which produces non-printing pulses in response to a difference between a reference temperature signal and printhead temperature signals produced by a temperature sensor located on the printhead.
  • U.S. Patent 5,223,853 to Wysocki et al. discloses a method of controlling the spot sizes printed by a thermal ink jet printer.
  • the temperature of the ink in the printhead is sensed and a combination of power level and time duration of the electrical input signal to the heating elements is selected by entering the sensed temperature of the ink into a predetermined function relating to the energy of the input signal to the corresponding resulting size of the spot on the copy sheet.
  • U.S. Patent 5,017,941 discloses a printhead which is cooled by circulating a cooling medium through passageways formed in the printhead.
  • an ink jet printer including at least one printhead which is energised to cause expulsion of ink droplets through printhead nozzles onto a recording medium, the at least one printhead having a printhead cooling system comprising:
  • partial width printheads form a scanning printhead assembly and are maintained at an optimum operating temperature by circulating cooling fluid from a common reservoir source through channels formed in cooling support members to which the printheads are secured.
  • partial width array chips are abutted together to form a full width printhead, and the printhead chips are mounted on a single cooling support member.
  • FIG. 1 illustrates a partial perspective view of a printer having a plurality of partial width array printheads movably mounted on a scanning carriage so as to scan across a curved surface of a paper holding drum.
  • FIG. 2 shows an end view of the printer of FIG. 1.
  • FIG. 3 shows a top view of the printer of FIG. 1, including ink reservoirs and water cooling and temperature control components.
  • FIG. 4 shows a top view of a full width printbar mounted on a single cooling support bar.
  • FIG. 1 illustrates the cooling of a partial width array printhead assembly in a scanning architecture.
  • a printing apparatus 10 includes a motor 11 connected to a suitable power supply (not shown) and arranged with an output shaft 14 parallel to an axis 15 of a cylindrical drum 16, preferably of aluminum construction, which is supported for rotation on bearings (not shown).
  • a pulley 17 permits direct engagement of the output shaft 14, to a drive belt 18 for enabling the drum 16 to be continuously rotationally driven by the motor 11 in the direction of an arrow A at a predetermined rotational speed.
  • the rotational speed is set to maximum determined by the firing logic (the number of jets and number fired at a time) and the maximum jet firing rate.
  • a recording medium 19 such as a sheet of paper or a transparency, is placed over an outer surface 20 of the drum 16, with a leading edge 21 attached to the surface 20 before printing to enable attachment of the sheet thereto either through the application of a vacuum through holes in the drum 16 (not shown) or through other means of holding such as electrostatic.
  • the sheet of paper 19 is moved past a printhead carriage 22 supported by a lead screw 24 arranged with the axis thereof parallel to the axis 15 of the drum 16 and supported by fixed bearings (not shown) which enable the carriage 22 to slidably translate axially.
  • a carriage rail 23 provides further support for the carriage as the carriage moves in the direction of arrow 25 perpendicular to the moving direction of the sheet 19.
  • the printhead carriage supports a color printhead assembly 40, details of which are shown in FIGS. 1 - 3.
  • Assembly 40 comprises two end frame members, 42, 44, to which are secured support bars 46, 48, 50.
  • Bars 46 to 50 are arranged in an angular alignment with respect to center point C of drum 16 in a manner described below. Bars 46 to 50 are prearranged in an angular alignment and are of graphite in the preferred embodiment.
  • a first partial width array printhead cartridge 52 (magenta) is secured to the side of bar 46; a second PWA color printhead cartridge 54 (cyan) is secured to bar 48, and a third color PWA printhead cartridge 56 (yellow) is secured to the side of bar 50.
  • a fourth PWA printhead cartridge 58 black is also secured to the side of bar 46. All of the printheads assume the same angular orientation as the bars to which they are secured.
  • Printed wiring boards contain circuitry required to interface and cause the individual heating elements (not shown) in the subunits to eject ink droplets from the nozzles. While not shown in FIG. 1, the printed wiring boards are connected to individual contacts contained on the subunits via a commonly known wire bonding technique.
  • the bit mapped image data required to drive the individual heating elements of the printhead subunits is supplied from an external system by a standard printer interface, modified and/or buffered by a controller 42 and transferred to the printheads by ribbon cables (not shown) attached thereto.
  • Each printhead cartridge comprises a printhead fluidly connected to an ink tank.
  • the cartridge 52 comprises a printhead 52A connected to ink tank 52B.
  • Cartridge 54 comprises a printhead 54A connected to ink tank 54B.
  • Cartridge 56 comprises a printhead 56A connected to ink tank 56B and cartridge 58 comprises a printhead 58A (not visible) connected to cartridge 58B.
  • the ink tanks are connected by flexible supply lines 52C, 54C, 56C, 58C to separate sections of an ink supply reservoir 60.
  • frame member 42 has a port 42A which connects to an interior chamber 42B.
  • exit ports 42C, 42D and 42E connect into the entrance ends of channels 46A, 48A, 50A formed, respectively, through the length of bars 46, 48, 50.
  • Frame member 44 has a port 44A connecting to an internal chamber 44B.
  • exit ports 44C, 44D and 44E connect with the exit ends of channels 46A, 48A, and 50A.
  • a pump 62 is connected to a water reservoir 64.
  • Tube 66 connects the water to the pump and tube 68 connects water from the pump into chamber 42B via port 42A.
  • Tube 70 is connected between port 44A and a heat exchanger 72 to reservoir 64 via tubing 74.
  • Heat exchanger 72 may not be needed if the duty cycle of the printing system is very low.
  • an immersible reservoir heater 76 is placed within reservoir 64 to increase and maintain the reservoir temperature at several degrees above ambient to minimize variations in nominal spot size of ejected ink droplets. Maintaining the temperature 5-8°C above ambient also significantly improves the heat transfer rate of the system, therefore, requiring a smaller heat exchanger.
  • the carriage under control of the system controller carries the printhead assembly along the scan path forming color images in a known manner on the recording medium 19.
  • the sheet 19 is advanced following each print scan.
  • the printhead tends to overheat.
  • water is continuously circulated through the supply bars, the water absorbing heat from the printheads, providing a cooling effect and maintaining the printhead in optimum temperature.
  • FIG. 4 shows a second embodiment of the invention wherein a printer 70 includes a full width black printbar 72 positioned to write on a recording medium 74 which is indexed by a motor (not shown) and moves in the direction of arrow 76.
  • Printbar 72 has been assembled from a plurality of printhead modules 72A which have been butted together and secured on support bar 73 to form a 12" printbar according to the techniques described, for example, in U.S. 5,221,397, whose contents are hereby incorporated by reference.
  • Printbar 72 in this embodiment, provides 7,200 nozzles or jets.
  • the printbar modules 72A are formed by butting together a channel array containing arrays of recesses that are used as sets of channels and associated ink reservoirs and a heater wafer containing heater elements and addressing circuitry.
  • the bonded wafers are diced to form the printbar resulting in formation of the jets, each nozzle or jet associated with a channel with a heater therein.
  • the heaters are selectively energized by input data sent from controller 42 to heat the ink and expel an ink droplet from the associated jet.
  • the ink channels are combined into a common ink manifold 78 mounted on the side of printbar 72 and in sealed communication with the ink inlets of the channel arrays through aligned openings.
  • the manifold 78 is supplied with the appropriate ink, black for this embodiment, from an ink reservoir 80 via flexible tubing 82.
  • Support bar 73 has a channel 84 formed within the bar running along its entire length.
  • the channel has an entrance port 73A and an exit port 73B.
  • Pump 86 is connected to water reservoir 88.
  • Tube 90 connects the water to the pump and tube 92 connects water from the pump into channel 84 via port 73A.
  • Tube 94 is connected between port 73B and a heat exchanger 96 to reservoir 88 via tubing 98.
  • An immersible reservoir heater 100 is again placed within reservoir 88 to increase and maintain the reservoir temperature at several degrees above ambient.
  • water is continuously circulated through channel 84 in support bar 73 absorbing heat from the printhead during its passage. Test results demonstrate control of temperature across the printbar 72 by ⁇ 2°C, and a reduction of the average steady state printhead temperature by as much as 22°C during an extended print run.
  • FIG. 4 shows only a single black full width printer, it is understood that additional printbars can be added to produce a full color printer, each additional printbar being cooled by the same type of cooling mechanism.

Landscapes

  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP98300470A 1997-04-07 1998-01-23 Tintenstrahldrucker mit einem verbesserten Kühlsystem Withdrawn EP0870622A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83356297A 1997-04-07 1997-04-07
US833562 1997-04-07

Publications (1)

Publication Number Publication Date
EP0870622A1 true EP0870622A1 (de) 1998-10-14

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Country Status (2)

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EP (1) EP0870622A1 (de)
JP (1) JPH10278251A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006128854A1 (en) * 2005-05-30 2006-12-07 Agfa Graphics Nv A print head shuttle with active cooling
WO2007015230A2 (en) * 2005-08-04 2007-02-08 Hewlett-Packard Industrial Printing Ltd. A method of cooling and servicing an inkjet print head array
US7475973B2 (en) * 2004-10-04 2009-01-13 Oce-Technologies B.V. Sheet handling device with a temperature controlled sheet support plate
EP2028012A1 (de) * 2007-08-22 2009-02-25 Ricoh Company, Ltd. Kopfanordnungseinheit und Bilderzeugungsvorrichtung
EP2090439A1 (de) * 2006-11-28 2009-08-19 Kerajet, S.A. Eigenständiges tintenstrahldruckmodul
ITMO20100096A1 (it) * 2010-04-01 2011-10-02 Tecno System S R L Dispositivo per il supporto delle testine di una macchina per la stampa digitale di piastrelle ceramiche
WO2014059958A1 (de) * 2012-10-15 2014-04-24 Voxeljet Ag Verfahren und vorrichtung zum herstellen dreidimensionaler modelle mit temperierbarem druckkopf
DE102013217663A1 (de) * 2013-09-04 2015-03-05 Krones Ag Direktdruckmaschine mit zwei Kühlsystemen
WO2017011923A1 (en) * 2015-07-23 2017-01-26 Radex Ag Drop-on-demand inkjet print bar
CN110177695A (zh) * 2017-03-15 2019-08-27 惠普发展公司，有限责任合伙企业 流体喷射管芯
US10442170B2 (en) 2013-12-20 2019-10-15 Voxeljet Ag Device, special paper, and method for producing shaped articles
US11046073B2 (en) 2017-04-05 2021-06-29 Hewlett-Packard Development Company, L.P. Fluid ejection die heat exchangers
WO2022010484A1 (en) * 2020-07-09 2022-01-13 Hewlett-Packard Development Company, L.P. Cooling a printhead in response to a cooling demand
US11400721B2 (en) 2018-04-23 2022-08-02 Hewlett-Packard Development Company, L.P. Wiping a print head
WO2024105377A1 (en) * 2022-11-14 2024-05-23 Xaar Technology Limited A droplet ejection head and method of operation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006218701A (ja) * 2005-02-09 2006-08-24 Alps Electric Co Ltd サーマルプリンタの冷却装置
JP2006327143A (ja) * 2005-05-30 2006-12-07 Alps Electric Co Ltd プリンタ
JP2007307772A (ja) * 2006-05-17 2007-11-29 Ricoh Co Ltd 液体吐出装置、画像形成装置、ヘッド用冷却ユニット
JP7352132B2 (ja) * 2019-03-29 2023-09-28 ブラザー工業株式会社 液体吐出ユニット

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03133657A (ja) * 1989-10-20 1991-06-06 Seiko Epson Corp 印字ヘッド冷却装置
JPH03187753A (ja) * 1989-12-18 1991-08-15 Canon Inc 記録装置
EP0450641A2 (de) * 1990-04-06 1991-10-09 Canon Kabushiki Kaisha Temperaturregler und Aufzeichnungsgerät
US5192958A (en) * 1991-10-09 1993-03-09 Xerox Corporation Method and apparatus to control overall write length in LED print bars
JPH05193229A (ja) * 1992-01-20 1993-08-03 Pfu Ltd マルチヘッドプリンタの印刷ヘッドの冷却構造
JPH08207272A (ja) * 1994-11-30 1996-08-13 Xerox Corp プリントダイアレイ冷却デバイス及びプリントバー冷却デバイス
EP0736390A2 (de) * 1995-04-03 1996-10-09 Canon Kabushiki Kaisha Temperatursteuerung für ein Druckgerät
JPH08276573A (ja) * 1995-04-07 1996-10-22 Canon Inc インクジェットプリント装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03133657A (ja) * 1989-10-20 1991-06-06 Seiko Epson Corp 印字ヘッド冷却装置
JPH03187753A (ja) * 1989-12-18 1991-08-15 Canon Inc 記録装置
EP0450641A2 (de) * 1990-04-06 1991-10-09 Canon Kabushiki Kaisha Temperaturregler und Aufzeichnungsgerät
US5192958A (en) * 1991-10-09 1993-03-09 Xerox Corporation Method and apparatus to control overall write length in LED print bars
JPH05193229A (ja) * 1992-01-20 1993-08-03 Pfu Ltd マルチヘッドプリンタの印刷ヘッドの冷却構造
JPH08207272A (ja) * 1994-11-30 1996-08-13 Xerox Corp プリントダイアレイ冷却デバイス及びプリントバー冷却デバイス
US5631676A (en) * 1994-11-30 1997-05-20 Xerox Corporation Parallel flow water cooling system for printbars
EP0736390A2 (de) * 1995-04-03 1996-10-09 Canon Kabushiki Kaisha Temperatursteuerung für ein Druckgerät
JPH08276573A (ja) * 1995-04-07 1996-10-22 Canon Inc インクジェットプリント装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 339 (M - 1152) 28 August 1991 (1991-08-28) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 443 (M - 1178) 12 November 1991 (1991-11-12) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 623 (M - 1511) 17 November 1993 (1993-11-17) *
PATENT ABSTRACTS OF JAPAN vol. 097, no. 002 28 February 1997 (1997-02-28) *

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7475973B2 (en) * 2004-10-04 2009-01-13 Oce-Technologies B.V. Sheet handling device with a temperature controlled sheet support plate
KR100948563B1 (ko) * 2005-05-30 2010-03-18 아그파 그래픽스 엔브이 프린트 헤드 장착 어셈블리, 및 운반기 프레임구조물에프린트 헤드를 장착하는 방법
WO2006128854A1 (en) * 2005-05-30 2006-12-07 Agfa Graphics Nv A print head shuttle with active cooling
WO2007015230A2 (en) * 2005-08-04 2007-02-08 Hewlett-Packard Industrial Printing Ltd. A method of cooling and servicing an inkjet print head array
WO2007015230A3 (en) * 2005-08-04 2007-07-19 Hewlett Packard Ind Printing A method of cooling and servicing an inkjet print head array
EP2090439A1 (de) * 2006-11-28 2009-08-19 Kerajet, S.A. Eigenständiges tintenstrahldruckmodul
EP2090439A4 (de) * 2006-11-28 2011-06-29 Kerajet S A Eigenständiges tintenstrahldruckmodul
US8104859B2 (en) 2007-08-22 2012-01-31 Ricoh Company, Ltd. Head array unit and image forming apparatus
EP2028012A1 (de) * 2007-08-22 2009-02-25 Ricoh Company, Ltd. Kopfanordnungseinheit und Bilderzeugungsvorrichtung
ITMO20100096A1 (it) * 2010-04-01 2011-10-02 Tecno System S R L Dispositivo per il supporto delle testine di una macchina per la stampa digitale di piastrelle ceramiche
EP2371569A1 (de) * 2010-04-01 2011-10-05 Tecno System S.r.l. Vorrichtung zur Halterung von Köpfen einer Digitaldruckmaschine für Keramikfliesen
WO2014059958A1 (de) * 2012-10-15 2014-04-24 Voxeljet Ag Verfahren und vorrichtung zum herstellen dreidimensionaler modelle mit temperierbarem druckkopf
US11097469B2 (en) 2012-10-15 2021-08-24 Voxeljet Ag Method and device for producing three-dimensional models with a temperature-controllable print head
DE102013217663A1 (de) * 2013-09-04 2015-03-05 Krones Ag Direktdruckmaschine mit zwei Kühlsystemen
DE102013217663B4 (de) 2013-09-04 2023-11-02 Krones Ag Direktdruckmaschine mit zwei Kühlsystemen
US10889055B2 (en) 2013-12-20 2021-01-12 Voxeljet Ag Device, special paper, and method for producing shaped articles
US10442170B2 (en) 2013-12-20 2019-10-15 Voxeljet Ag Device, special paper, and method for producing shaped articles
CN107921778A (zh) * 2015-07-23 2018-04-17 默威股份公司 按需滴定的喷墨打印杆
US10457060B2 (en) 2015-07-23 2019-10-29 Mouvent Ag Drop-on-demand inkjet print bar
WO2017011923A1 (en) * 2015-07-23 2017-01-26 Radex Ag Drop-on-demand inkjet print bar
CN107921778B (zh) * 2015-07-23 2020-08-21 默威股份公司 按需滴定的喷墨打印杆
CN110177695B (zh) * 2017-03-15 2022-02-15 惠普发展公司，有限责任合伙企业 流体喷射管芯
CN110177695A (zh) * 2017-03-15 2019-08-27 惠普发展公司，有限责任合伙企业 流体喷射管芯
US10780697B2 (en) 2017-03-15 2020-09-22 Hewlett-Packard Development Company, L.P. Fluid ejection dies
EP3538370A4 (de) * 2017-03-15 2020-07-08 Hewlett-Packard Development Company, L.P. Flüssigkeitsausstossdüsen
US11046073B2 (en) 2017-04-05 2021-06-29 Hewlett-Packard Development Company, L.P. Fluid ejection die heat exchangers
US11400721B2 (en) 2018-04-23 2022-08-02 Hewlett-Packard Development Company, L.P. Wiping a print head
WO2022010484A1 (en) * 2020-07-09 2022-01-13 Hewlett-Packard Development Company, L.P. Cooling a printhead in response to a cooling demand
WO2024105377A1 (en) * 2022-11-14 2024-05-23 Xaar Technology Limited A droplet ejection head and method of operation

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