WO2021230885A1 - Appareils d'impression comprenant une face inférieure pour transférer de la chaleur - Google Patents

Appareils d'impression comprenant une face inférieure pour transférer de la chaleur Download PDF

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Publication number
WO2021230885A1
WO2021230885A1 PCT/US2020/033253 US2020033253W WO2021230885A1 WO 2021230885 A1 WO2021230885 A1 WO 2021230885A1 US 2020033253 W US2020033253 W US 2020033253W WO 2021230885 A1 WO2021230885 A1 WO 2021230885A1
Authority
WO
WIPO (PCT)
Prior art keywords
media
printing apparatus
bottom face
print
chamber
Prior art date
Application number
PCT/US2020/033253
Other languages
English (en)
Inventor
Antonio MONCLUS VELASCO
Francisco GUERRERO CARVAJAL
Diego LOPEZ UBIETO
Original Assignee
Hewlett-Packard Development Company, L.P.
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 Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2020/033253 priority Critical patent/WO2021230885A1/fr
Publication of WO2021230885A1 publication Critical patent/WO2021230885A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
    • 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
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4078—Printing on textile
    • 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
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles

Definitions

  • a media passes through a print zone. An amount of ink is laid down on a media in the print zone. Then, the media may be extracted from the print zone and directed into a storage zone wherein it may be stored next to other pieces of media having ink thereon.
  • Figure 1 is a schematic view of a printing apparatus according to an example of the present disclosure.
  • Figure 2 is a schematic view of an extraction part of the example printing apparatus of figure 1 .
  • Figure 3 is a sideview of a printer according to another example of the present disclosure.
  • Figure 4 is a sideview of a deflector of the example printer of figure 3.
  • Figure 5 is a flowchart of an example printing method of the present disclosure.
  • the media passes through a downstream space delimited by a bottom face and a top cover.
  • the bottom face is to transfer heat by conduction to the media coming across the downstream space.
  • an air flow is circulated in the print zone and an extraction part includes a primary path to collect the air flow from the print zone.
  • the extraction part includes a secondary path to collect a flow from the downstream space.
  • the air flow has a component in a path direction of the media in the print zone. Hence, one avoids adding flows that leave the printer without passing through filters and generate pollution on the workspace.
  • a junction between the primary path and the secondary path is located at a constricted portion of the primary path. Thanks to the Venturi principle, this feature creates an area of low pressures that attracts vapors from the downstream space.
  • a printing apparatus 10 includes a print zone 12, a downstream space 14 and a storage zone 16.
  • the storage zone 16 may include a media output roll.
  • a direct orthonormal vector basis 18 is associated to the print zone 12.
  • the vectors of the basis 18 may include a vector X, a vector Y and a vector Z.
  • the vector Z is vertically, upwards oriented.
  • the printing apparatus 10 may be a direct to fabric dye sublimation printing apparatus.
  • the printing apparatus 10 may be intended to print on textiles such as, for example, flags or polyester textiles or backlits.
  • a media 20 may be received in the print zone 12. After it has passed through the print zone 12, the media 20 may come across the downstream space 14. Then, the media 20 may be directed into the storage zone 16.
  • the printing apparatus 10 may include a print head 22 which may lay down an amount of ink 24 on the media 20 when it is in the print zone 12.
  • the downstream space 14 may be downwardly delimited by a bottom face 26.
  • the bottom face 26 may include a heating element 27 to transfer heat by conduction to the media 20 when it comes across the downstream space 14.
  • the media 20 may lean on the bottom face 26, on its side adjacent to the downstream space 14.
  • the bottom face 26 may heat the media 20 coming across the downstream space 14 at a temperature between 80°C and 105°C. When it is heated at a temperature within this range, the media 20 may be completely dried before it enters in the storage zone 16. This will avoid an ink transfer issue between the printed face of the media 20 and the adjacent back side of the media 20.
  • sublimation process may usually take place in a temperature frame from 180°C to 210°C, and may not take place at a temperature below 120 °C. Hence, when the bottom face 26 heats the media 20 at a temperature between 80°C and 105°C, the bottom face 26 does not trigger a sublimation process.
  • the bottom face 26 may include a metal.
  • the bottom face 26 may also have a thickness between 0.5 mm to 1 mm .
  • the bottom face 26 may include a curved surface 28.
  • the curved surface 28 may have a curvature radius between 1 m and 1 .5 m.
  • the center of the curvature radius may be opposite to the side on which the media 20 leans.
  • the downstream space 14 may be upwardly delimited by a top cover 30.
  • the top cover 30 may be inclined with respect to the horizontal plane containing the vectors X and Y.
  • the top cover 30 may have an inclination angle a, with respect to the horizontal plane, within 10° to 80°.
  • the printing apparatus 10 may include an airflow generator 32.
  • the airflow generator 32 may generate a warm airflow 34 within the print zone 12.
  • the warm air flow 34 may have a temperature of 60 °C.
  • At least a component of the warm airflow 74 may be parallel to a path direction of the media 20 in the print zone 12, that is in opposite direction to the vector Y.
  • the warm air flow 34 may implement a first drying of the media 20 in the print zone 12.
  • the media 20 may be completely dried when leaving the downstream space 14 due to the heating in the print zone 12 by convection with the air flow 34, and to the heating in the downstream space 14 by conduction with the bottom face 26.
  • the heating in the print zone 12 may remove water from the media 20 whereas the heating in the downstream space may remove solvents from the media 20.
  • the printing apparatus 10 may include an extraction part 36 and an extraction system 38.
  • the extraction part 36 may include a primary path 40 which may have a constricted portion 42.
  • the primary path 40 may collect the warm airflow 34 from the print zone 12.
  • the primary path 40 may then evacuate the airflow 34 into the extraction system 38.
  • the extraction part 36 may include a secondary path 44.
  • the secondary path 44 may collect a flow 46 containing vapors generated by the drying process of the media 20 in the downstream space 14.
  • the extraction part 36 may include a junction 48 between the primary path 40 and the secondary path 44.
  • the junction 48 may implement a fluid communication between the primary path 40 and the secondary path 44.
  • the vapor flow 46 circulating through the secondary path 44 may circulate through the primary path 40 into the extraction system 38.
  • the extraction part 36 may collect vapors originated from two processes, or from a combination between them, which may include a drying process wherein liquid, for instance water or solvents, is removed liquid from ink, and a curing process wherein a polymerization of the ink may occur, for instance by cross-linking.
  • the curing process may be obtained by applying energy, e.g. , from a LED source or a heater.
  • the junction 48 may be located at the constricted portion 42. Hence, thanks to the Venturi principle, the pressure decreases at the location of the junction 48, and the vapors generated between the bottom face 26 and the top cover 30 may tend to flow towards the extraction part 36, where they may be guided to the extraction system 38.
  • a printer 50 may be a direct to fabric dye sublimation roll to roll printer.
  • the printer 50 may be used for printing on a substrate 52 such as a textile 52.
  • the substrate 52 may be provided by a media input roll 54, using a media drive roll 56. Once the printing operation is complete, the media 52 may be stored on a media output roll 58.
  • the printer 50 may include a print chamber 60.
  • the print chamber 60 may accommodate a printing carriage 62 which can eject ink onto the substrate 52.
  • the printer 50 may include a downstream chamber 66.
  • the downstream chamber 66 may evacuate the substrate 52 from the print chamber 60 towards the media output roll 58.
  • the downstream chamber 66 may include and may be delimited by a lower plate 68 and an upper wall 70.
  • the upper wall may have an inclination angle with reference of an horizontal plane of the print chamber 60.
  • the lower plate 68 may include a heater 72.
  • the heater 72 may then transfer thermal energy to the substrate 52 by conduction.
  • the lower plate 68 may include a rounded face 74 in order to ensure that the media 52 is always in contact with the lower plate 68, on the side adjacent to the downstream chamber 66.
  • the printer 50 may include a fan 78 that may generate an airflow 80 through the print chamber 60.
  • the airflow 80 may be parallel to the media advance direction 64.
  • the fan 78 may be associated with a coil heater 79 which, combined with the fan 78, may implement a first heating in the print chamber 60.
  • the printer 50 may include a deflector 82.
  • the defector 82 may be located between the print chamber 60 and the downstream chamber 66.
  • the deflector 82 may include a first duct 84 having a first end opening 86 and a second end opening 88.
  • the first opening 86 may fluidly link the first duct 84 with the print chamber 60.
  • the second end opening 88 may lead towards an extraction system 92 (see figure 3), as shown by the arrow 90.
  • the extraction system 92 may be connected to a general exhaust that may take all the vapors outside the room.
  • the extraction system 92 may include an active extraction system such as a fan or a pump.
  • the first duct 84 may include a smaller axial cross-section portion 94. That is, the area of the cross- section of the duct 84 is smaller in the portion 94 than in other portions of the duct 84.
  • the defector 82 may include a second duct 96.
  • the second duct 96 may include a first end opening 98 which may be fluidly linked to the downstream chamber 66.
  • the deflector 82 may include a fork 100.
  • the fork 100 may fluidly link the first duct 84 and the second duct 96.
  • the fork 100 may be located at the smaller axial cross-section portion 94.
  • the deflector 82 may collect, by means of the first duct 84, the airflow 80 from the print chamber 60.
  • the airflow 80 decreases the pressure and the vapor flow 76 is attracted from the downstream chamber 66 in the second duct 96.
  • the vapor flow 76 and the airflow 18 may then mixed together in the first duct 84 and may be directed towards the extraction duct 90.
  • the deflector 82 may collect vapors originated from a drying and/or a curing of the substrate 52.
  • the example method may include, at block 102, providing ink on the substrate 52 when it is in the print chamber 60. Meanwhile, the method may include providing an airflow 80 through the print chamber 60 to start drying the substrate 52.
  • the example method may include, at block 104, collecting the airflow 80 via the first duct 84 of the deflector 82. Meanwhile, the airflow 80 may be directed towards the extraction duct 90 and the extraction system 92.
  • the example method may include, at block 106, evacuating the substrate 52 from the print chamber 60 into the downstream chamber 66.
  • the substrate 52 may not be completely dry when it leaves the print chamber 60.
  • the example method may include, at block 108, heating the lower plate 68.
  • the substrate 52 may be heated by conduction and vapors may be evaporated from the substrate 52. This may result in drying completely the substrate 52 and generating the vapor flow 76. Then, the vapor flow 76 may be directed towards the deflector 82 thanks to the inclination of the upper wall 70.
  • the example method may include, at block 1 10, extracting the vapor flow 76 from the downstream chamber 66 through the second duct 96 of the deflector 82.
  • the extraction may be implemented by means of the fork 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Ink Jet (AREA)

Abstract

La présente invention concerne un appareil d'impression comprenant une zone d'impression pour recevoir un support dans laquelle une quantité d'encre est déposée sur le support, une face inférieure et un couvercle supérieur, la face inférieure et le couvercle supérieur délimitant un espace en aval à l'intérieur qui passe par le milieu après avoir traversé la zone d'impression, la face inférieure étant destinée à transférer de la chaleur par conduction vers le milieu entrant dans l'espace en aval, l'appareil d'impression comprenant une partie d'extraction comprenant un trajet primaire pour collecter un premier flux contenant de l'air provenant de la zone d'impression et pour évacuer ledit premier flux, un trajet secondaire pour collecter un second flux contenant des vapeurs provenant de l'espace en aval et une jonction pour établir une communication fluidique entre le trajet primaire et le trajet secondaire.
PCT/US2020/033253 2020-05-15 2020-05-15 Appareils d'impression comprenant une face inférieure pour transférer de la chaleur WO2021230885A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2020/033253 WO2021230885A1 (fr) 2020-05-15 2020-05-15 Appareils d'impression comprenant une face inférieure pour transférer de la chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/033253 WO2021230885A1 (fr) 2020-05-15 2020-05-15 Appareils d'impression comprenant une face inférieure pour transférer de la chaleur

Publications (1)

Publication Number Publication Date
WO2021230885A1 true WO2021230885A1 (fr) 2021-11-18

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PCT/US2020/033253 WO2021230885A1 (fr) 2020-05-15 2020-05-15 Appareils d'impression comprenant une face inférieure pour transférer de la chaleur

Country Status (1)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332422A2 (fr) * 1988-03-08 1989-09-13 Maurice Dale Smith Dispositif pour évaporer l'eau de mouillage
EP0568256A1 (fr) * 1992-05-01 1993-11-03 Hewlett-Packard Company Système d'écoulement d'air pour imprimante à jet d'encre
US20130100218A1 (en) * 2011-10-24 2013-04-25 Seiko Epson Corporation Recording apparatus
US20140055541A1 (en) * 2009-08-27 2014-02-27 Seiko Epson Corporation Recording apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332422A2 (fr) * 1988-03-08 1989-09-13 Maurice Dale Smith Dispositif pour évaporer l'eau de mouillage
EP0568256A1 (fr) * 1992-05-01 1993-11-03 Hewlett-Packard Company Système d'écoulement d'air pour imprimante à jet d'encre
US20140055541A1 (en) * 2009-08-27 2014-02-27 Seiko Epson Corporation Recording apparatus
US20130100218A1 (en) * 2011-10-24 2013-04-25 Seiko Epson Corporation Recording apparatus

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