EP1537998A1 - Vorrichtung und Verfahren zum Handhaben von Tintentropfen - Google Patents

Vorrichtung und Verfahren zum Handhaben von Tintentropfen Download PDF

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Publication number
EP1537998A1
EP1537998A1 EP04106011A EP04106011A EP1537998A1 EP 1537998 A1 EP1537998 A1 EP 1537998A1 EP 04106011 A EP04106011 A EP 04106011A EP 04106011 A EP04106011 A EP 04106011A EP 1537998 A1 EP1537998 A1 EP 1537998A1
Authority
EP
European Patent Office
Prior art keywords
ink drops
belt surface
belt
path
loosening
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.)
Ceased
Application number
EP04106011A
Other languages
English (en)
French (fr)
Inventor
Sandor H. Joppen
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
Priority to EP04106011A priority Critical patent/EP1537998A1/de
Publication of EP1537998A1 publication Critical patent/EP1537998A1/de
Ceased 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
    • B41J29/17—Cleaning 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
    • B41J2/16508—Caps, spittoons or covers for cleaning or preventing drying out connected with the printer frame
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16523—Waste ink transport from caps or spittoons, e.g. by suction
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16526—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head by applying pressure only
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/1721—Collecting waste ink; Collectors therefor
    • B41J2/1742—Open waste ink collectors, e.g. ink receiving from a print head above the collector during borderless printing
    • 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
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems
    • B41J2/185—Ink-collectors; Ink-catchers

Definitions

  • the invention relates to a device and a method for handling ink drops, in particular receiving ink drops from a printhead or a printhead cleaning unit and discharging the ink drops to an ink drop collection tray.
  • the ink drops falling down are received on a conveyor belt that circulates about four rollers arranged according to a vertical square: one upper roller, one lower roller and two side rollers.
  • the upper roller has a concave belt supporting surface and the lower roller has a convex belt supporting surface.
  • the concave portion of the belt forms a trough for the ink drops.
  • the invention provides a device for conveying ink drops from a receiving station, where the ink drops originating from a printhead are received, to a discharge station, where the ink drops in a dried condition are discharged
  • the device comprises a conveyor belt for conveying the ink drops, the conveyor belt having a belt surface for supporting the ink drops during their conveyance from the receiving station to the discharge station, wherein at the discharge station the conveyor belt is provided with means for loosening at least a leading portion of the dried ink drops by changing the path of movement of the belt surface as considered in a vertical plane.
  • the invention provides a method for conveying ink drops from a receiving station, where the ink drops originating from a printhead are received, to a discharge station, where the ink drops in a dried condition are discharged, wherein the method comprises the steps of receiving the ink drops on a belt conveyor surface, allowing the ink drops to set on the belt surface so as to form dried ink drops at the discharge station, progressively peeling off a leading portion of the set ink drops from the belt surface by changing the path of movement of the belt surface, loosening the ink drops in their entirety from the belt surface and delivering the ink drops to an ink drop collector.
  • said means for loosening are adapted to progressively diverge said leading portion from the path of movement of the belt surface.
  • the peeling-off effect will be improved in case the change is sharp.
  • the means for loosening may be adapted to change the path of movement of the belt surface according to a convex turning path, in particular a convex turning path including an angle of at least 90 degrees.
  • the radius of the convex turning path is adjusted to the length of the ink drops on the belt surface.
  • the radius of the convex turning path may be smaller than the length of the ink drops on the belt surface.
  • a typical radius used is between 1-6 mm.
  • the drying of the ink drops is accelerated.
  • This can be realised by means of means for accelerating the drying of the ink drops, which means are positioned below the belt surface supporting the ink drops and may comprise a belt supporting plate.
  • the ink drops can be solidified within a short period of time, during which the belt conveyor may be held stationary for a while after receipt of an ink drop, and then shifted to present a next belt surface to the next ink drop that falls down. In this way it is ensured that the ink drops will have been solidified to such an extent that they will be rigid in the vertical plane and the peeling off process will be enhanced.
  • additional means for loosening a trailing portion of the dried ink drops from the belt surface are used.
  • Said means for loosening a trailing portion of the dried ink drops from the belt surface advantageously comprise a stationary stop engaging the loosened leading portion of the ink drops. In this way it is ensured that under all circumstances the ink drops are peeled off completely from the belt surface.
  • Figure 1 shows a device 1 embodying an embodiment of the device according to the invention, which device 1 comprises a belt conveyor 4 comprising an endless belt 5 running about drive roller 6 and idle roller 7.
  • the upper track of the belt 5 is positioned below a printhead 2 having a lower surface 3 from which ink can be delivered during printing in a manner known per se.
  • a printhead cleaning unit can be located above the conveyor 4, depending on the structure of the printer arrangement(that is not shown).
  • the upper track of the belt 5 is supported on a cooling plate 8, which is adapted to cool the surface 5a of belt 5.
  • an ink drop collection tray 9 Adjacent to idle roller 7 an ink drop collection tray 9 has been arranged, which tray 9 defines a collecting space 11. At its upper side, the tray 9 has a curved deflector wall portion 10, which extends to above the upper belt track, at the location of the roller 7.
  • the tray 9 is provided with a stop or abutment plate 12, the upper end 13 of which is spaced below the roller 7 and the lower track of the belt 5.
  • the device 1 of figures 1-3 operates as follows.
  • the drive roller 6 is not activated, so that the plaques 21 are allowed to dry, assisted by the presence of the cooling plate 8.
  • the drive roller 6 is activated to drive the upper track of the belt 5 in the direction B.
  • the plaques 21 are conveyed along in the direction B, to arrive at the roller 7.
  • the plaques 21 have resistance to bending so that their leading portion 21 a continues its path of movement in the direction C, that is to say the direction of movement of the portion of the belt 5 directly upstream of roller 7.
  • the leading portion 21 a of the plaque 21 will be automatically peeled off from the belt surface 5a.
  • the plaque 21 Upon continued movement of the belt 5, the plaque 21 will be moved under the deflecting wall 10 and rotate in the direction D. In some cases, the plaque 21 will completely loosen from the belt surface during this movement. In other cases, a small trailing portion 21 b of the ink plaque 21 may remain attached to the belt surface. In that case, the lower surface of the plaque 21 will, as depicted in figure 3, hit the abutment plate 12. Due to the continued movement of the belt 5 the trailing portion 21 b will be urged to loose from the belt surface. Then the plaque 21 will fall downwards from the abutment plate 12 into the space 11.
  • An operator may periodically empty the tray 9.
  • the device and process according to the invention are particularly suitable for use in hot melt ink printing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ink Jet (AREA)
EP04106011A 2003-12-05 2004-11-23 Vorrichtung und Verfahren zum Handhaben von Tintentropfen Ceased EP1537998A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04106011A EP1537998A1 (de) 2003-12-05 2004-11-23 Vorrichtung und Verfahren zum Handhaben von Tintentropfen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03078810 2003-12-05
EP03078810 2003-12-05
EP04106011A EP1537998A1 (de) 2003-12-05 2004-11-23 Vorrichtung und Verfahren zum Handhaben von Tintentropfen

Publications (1)

Publication Number Publication Date
EP1537998A1 true EP1537998A1 (de) 2005-06-08

Family

ID=34466345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106011A Ceased EP1537998A1 (de) 2003-12-05 2004-11-23 Vorrichtung und Verfahren zum Handhaben von Tintentropfen

Country Status (1)

Country Link
EP (1) EP1537998A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1782955A1 (de) * 2005-11-02 2007-05-09 Francotyp-Postalia GmbH Verfahren und Vorrichtung zum Freispritzen eines Tintendruckkopfes
EP2072264A1 (de) * 2007-12-19 2009-06-24 Mimaki Engineering Co., Ltd. Tintenempfangseinheit und Druckvorrichtung
EP2072265A1 (de) * 2007-12-19 2009-06-24 Mimaki Engineering Co., Ltd. Druckvorrichtung
CN115157873A (zh) * 2022-09-07 2022-10-11 佛山市三水盈捷精密机械有限公司 一种用于打印二维码的陶瓷喷墨打印机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082848A (en) * 1994-03-25 2000-07-04 Hewlett-Packard Company Self-cleaning service station for inkjet printing mechanisms
US6196654B1 (en) * 1990-04-17 2001-03-06 Canon Kabushiki Kaisha Apparatus and method for cleaning a recording material conveying member using blade member and ink absorber
US6340220B1 (en) * 2000-01-31 2002-01-22 Hewlett-Packard Company Transferring spittoon system for waste inkjet ink

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6196654B1 (en) * 1990-04-17 2001-03-06 Canon Kabushiki Kaisha Apparatus and method for cleaning a recording material conveying member using blade member and ink absorber
US6082848A (en) * 1994-03-25 2000-07-04 Hewlett-Packard Company Self-cleaning service station for inkjet printing mechanisms
US6340220B1 (en) * 2000-01-31 2002-01-22 Hewlett-Packard Company Transferring spittoon system for waste inkjet ink

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1782955A1 (de) * 2005-11-02 2007-05-09 Francotyp-Postalia GmbH Verfahren und Vorrichtung zum Freispritzen eines Tintendruckkopfes
US7645021B2 (en) 2005-11-02 2010-01-12 Francotyp-Postalia Gmbh Method and device for spray cleaning an inkjet print head
EP2072264A1 (de) * 2007-12-19 2009-06-24 Mimaki Engineering Co., Ltd. Tintenempfangseinheit und Druckvorrichtung
EP2072265A1 (de) * 2007-12-19 2009-06-24 Mimaki Engineering Co., Ltd. Druckvorrichtung
EP2184169A1 (de) * 2007-12-19 2010-05-12 Mimaki Engineering Co., Ltd. Druckvorrichtung
CN115157873A (zh) * 2022-09-07 2022-10-11 佛山市三水盈捷精密机械有限公司 一种用于打印二维码的陶瓷喷墨打印机
CN115157873B (zh) * 2022-09-07 2022-11-29 佛山市三水盈捷精密机械有限公司 一种用于打印二维码的陶瓷喷墨打印机

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