EP3370972A1 - Druckbaugruppe und verfahren zur verhinderung einer gasförmigen emission von einer druckbaugruppe in eine umgebung - Google Patents

Druckbaugruppe und verfahren zur verhinderung einer gasförmigen emission von einer druckbaugruppe in eine umgebung

Info

Publication number
EP3370972A1
EP3370972A1 EP16787855.2A EP16787855A EP3370972A1 EP 3370972 A1 EP3370972 A1 EP 3370972A1 EP 16787855 A EP16787855 A EP 16787855A EP 3370972 A1 EP3370972 A1 EP 3370972A1
Authority
EP
European Patent Office
Prior art keywords
medium
air
air stream
printing assembly
unit
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
Application number
EP16787855.2A
Other languages
English (en)
French (fr)
Other versions
EP3370972B1 (de
Inventor
Edwin C. MULKENS
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Technologies BV
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 Oce Technologies BV filed Critical Oce Technologies BV
Publication of EP3370972A1 publication Critical patent/EP3370972A1/de
Application granted granted Critical
Publication of EP3370972B1 publication Critical patent/EP3370972B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B41J29/12—Guards, shields or dust excluders
    • B41J29/13—Cases or covers
    • 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

Definitions

  • a known printing assembly provides a recording substance on a recording medium in image dots such that the image dots together form an image.
  • the image dots are formed by applying droplets of a fluid curable recording substance.
  • the recording substance is then cured by applying a suitable radiation, for example UV radiation.
  • a chemical reaction initiated by the radiation results in solidification of the fluid recording substance. Further, chemical emissions are released. Such chemical emissions may create an undesirable smell and may even be harmful.
  • a printing assembly according to claim 1 is provided.
  • the printing assembly comprises a printing station, where a recording substance is provided on a medium for forming an image. After application on the medium, the recording substance releases a gaseous emission.
  • the printing assembly further comprises an air stream supply unit and an air stream pick-up unit, which units are provided in the printing assembly for generating an air stream from the air stream supply unit to the air stream pick-up unit.
  • the air stream is substantially planar and positioned between a printing assembly space and the surroundings.
  • a printed part of the medium is the part of the medium on which the recording substance is applied.
  • the printed part of the medium is arranged in the printing assembly space.
  • the air stream pick-up unit is operatively coupled to an air treatment unit.
  • the air treatment unit receives the air picked-up by the air stream pick-up unit and removes the gaseous emission from said air.
  • cleaned harmless air may be supplied to the surroundings.
  • the air stream pick-up unit is operatively coupled to an air transport assembly, wherein the air transport assembly receives the air picked-up by the air stream pick-up unit.
  • the air transport system then transports the air, including any gaseous emission, to a predetermined location, preferably away from the direct surroundings, for example to an outside environment.
  • the air supply unit and the air pick-up unit are arranged, in a direction perpendicular to the medium support surface, at a distance from the medium support surface.
  • the air curtain is generated at a distance from the medium support surface, thereby preventing obstructions in the air stream, which might break the curtain.
  • Fig. 1 B shows a schematic representation of a scanning inkjet printing assembly
  • Fig. 1 C shows a perspective view of a second exemplary embodiment of an inkjet printing assembly
  • the delivery station may comprise processing means for processing the image receiving member 28, 30 after printing, e.g. a folder or a puncher.
  • the wide-format inkjet printing assembly 36 furthermore comprises means for receiving print jobs and optionally means for manipulating print jobs. These means may include a user interface unit 24 and/or a control unit 34, for example a computer.
  • At least one print head 4a - 4d for each of the colors usually black, cyan, magenta and yellow is present.
  • black marking material is used more frequently in comparison to differently colored marking material. Therefore, more print heads 4a - 4d containing black marking material may be provided on the scanning print head carriage 5 compared to print heads 4a - 4d containing marking material in any of the other colors.
  • the print head 4a - 4d containing black marking material may be larger than any of the print heads 4a - 4d, containing a differently colored marking material.
  • the print head carriage 5 is guided by guiding means 6, 7. These guiding means 6, 7 may be rods as depicted in Fig.
  • the guide beam 16 is also arranged and configured to be enabled to move in a Z-direction, which is substantially perpendicular to the X-direction and the Y-direction such to enable to adapt the printing apparatus 14 to a thickness of the recording medium being arranged on the medium support surface 1 and/or to be enabled to print multiple layers on top of each other such to generate height differences in a printed image.
  • Fig. 2A and 2B each show a cross-sectional view of a roll-to-roll printing assembly 36, wherein a web medium 38 is supplied from a supply roll 28 in a web medium supply station over a first guide roller 40 to a printing station 46 comprising a medium support surface 1 and a carriage 5 arranged over the medium support surface 1 . The web medium 38 is then supplied from the printing station 46 over a second guide roller 42 to a web medium receive station comprising a receive roll 44.
  • a web medium 38 is supplied from a supply roll 28 in a web medium supply station over a first guide roller 40 to a printing station 46 comprising a medium support surface 1 and a carriage 5 arranged over the medium support surface 1 .
  • the web medium 38 is then supplied from the printing station 46 over a second guide roller 42 to a web medium receive station comprising a receive roll 44.
  • FIG. 2B another particular embodiment is shown, wherein the housing 26 does not extend over the second guide roller 42, while the air supply unit 50 is arranged over the carriage 5.
  • the air stream 54 generated by the air supply unit 50 is directed at a surface of the second guide roller 42.
  • the air stream is guided over the guide roller 42 by the Coanda effect, thereby following the direction of movement of the web medium 38.
  • a larger part of the printed surface of the web medium 38 is visible to an operator, while the gaseous emissions GE1 and GE2 are prevented from entering the surroundings by the air curtain formed by the air stream 54.
  • the air pick-up unit 52a, 52b is arranged at a distance from the medium support surface in a direction perpendicular to the medium support surface 1 to minimize influence on the air stream 54a, 54b.
  • an elevated recording medium might obstruct and deflect the air stream 54, if the air stream 54 would be close to the medium support surface 1 .
  • this obstruction or deflection may be prevented.
  • the first air pick-up unit 52a and the second air supply unit 50b may be switched off.
  • Another air stream 54d may then be generated streaming from the first air supply unit 50b to the stationary air pick-up unit 52b.
  • the other air stream 54d may replace the first and the second air streams 54a, 54b and the first air pick-up unit 52a and the second air supply unit 50b may be omitted, since the gantry 16 will in such embodiment not interfere with the other air stream 54d.
  • the present invention may be employed in any printer assembly wherein a printed medium is not covered by a printer housing, or the like, such as (but not limited to) a hybrid printer in which a rigid medium may be transported through a print station by a suitable pinch, or the like.

Landscapes

  • Ink Jet (AREA)
EP16787855.2A 2015-11-06 2016-10-27 Druckbaugruppe und verfahren zur verhinderung einer gasförmigen emission von einer druckbaugruppe in die umgebung Active EP3370972B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15193396 2015-11-06
PCT/EP2016/075876 WO2017076725A1 (en) 2015-11-06 2016-10-27 Printing assembly and method of preventing a gaseous emission from the printing assembly entering a surroundings

Publications (2)

Publication Number Publication Date
EP3370972A1 true EP3370972A1 (de) 2018-09-12
EP3370972B1 EP3370972B1 (de) 2020-08-19

Family

ID=54540879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16787855.2A Active EP3370972B1 (de) 2015-11-06 2016-10-27 Druckbaugruppe und verfahren zur verhinderung einer gasförmigen emission von einer druckbaugruppe in die umgebung

Country Status (2)

Country Link
EP (1) EP3370972B1 (de)
WO (1) WO2017076725A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007293269A (ja) * 2006-03-28 2007-11-08 Dainippon Screen Mfg Co Ltd 画像記録装置
JP5251479B2 (ja) * 2008-12-16 2013-07-31 セイコーエプソン株式会社 記録装置
WO2013131751A1 (en) * 2012-03-06 2013-09-12 Oce-Technologies B.V. Recording substrate treatment apparatus, printing system and method of drying
US9073362B2 (en) * 2013-08-27 2015-07-07 Oce-Technologies B.V. Inkjet printer assembly using a gelling UV curable ink

Also Published As

Publication number Publication date
WO2017076725A1 (en) 2017-05-11
EP3370972B1 (de) 2020-08-19

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