EP0101280A1 - Vorrichtung und Verfahren zum Aufbringen einer Flüssigkeit auf eine Oberfläche - Google Patents

Vorrichtung und Verfahren zum Aufbringen einer Flüssigkeit auf eine Oberfläche Download PDF

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Publication number
EP0101280A1
EP0101280A1 EP83304567A EP83304567A EP0101280A1 EP 0101280 A1 EP0101280 A1 EP 0101280A1 EP 83304567 A EP83304567 A EP 83304567A EP 83304567 A EP83304567 A EP 83304567A EP 0101280 A1 EP0101280 A1 EP 0101280A1
Authority
EP
European Patent Office
Prior art keywords
drops
stream
liquid
travel
path
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Withdrawn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
EP83304567A
Other languages
English (en)
French (fr)
Inventor
Allan Willett
Michael Richard Keeling
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.)
Willett International Ltd
Original Assignee
Willett International Ltd
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 Willett International Ltd filed Critical Willett International Ltd
Publication of EP0101280A1 publication Critical patent/EP0101280A1/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Withdrawn legal-status Critical Current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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • 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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type

Definitions

  • This invention relates to apparatus for and a method of applying a liquid to a surface.
  • the present invention has as its object to provide apparatus for and a method of applying a liquid to a surface which is suitable for use with a wide variety of liquids, such as inks and adhesives, which is non-contact in that there need be no contact between the liquid applying means and the surface to which the liquid is to be applied, and which enables a liquid to be accurately applied to selected positions on a surface.
  • liquids such as inks and adhesives
  • the present invention provides .apparatus for applying a liquid to a surface, the apparatus comprising means for directing a continuous stream of drops of a said liquid in a direction to traverse and not impinge on a surface to which the liquid is to be applied, means for effecting relative movement between a said stream of drops and a said surface in a direction perpendicular to the direction of travel of the stream of drops, means for selectively electrically charging the drops of liquid in said stream, and means for establishing a steady electric field about the path of travel of said stream of drops for deflecting the electrically charged drops onto said surface.
  • the present invention also provides a method of applying a liquid to a surface, the method comprising directing a continuous stream of drops of a said liquid in a direction to traverse and not impinge on a surface to which the liquid is to be applied, effecting relative movement between the stream of drops and the said surface in a direction perpendicular to the direction of travel of the stream of drops, selectively electrically charging the drops of liquid in said stream, and deflecting the electrically charged drops onto said surface by establishing a steady electric field about the path of travel of the stream of drops.
  • the apparatus of the present invention comprises means for forming and directing a moving single stream of uniformly spaced and uniformly sized drops of liquid.
  • Such means may comprise a nozzle for producing a continuous single stream of liquid and means for stimulating the nozzle to cause said stream to break up into drops of uniform size and spacing.
  • the stimulating means may comprise a piezo electric crystal, e.g., may comprise a bimorph or unimorph.
  • the surface to which the liquid is to be applied may be the surface of an article such as a label or web of paper or other material, and the apparatus may comprise means for transporting such an article or succession of articles along a path which will be traversed by said continuous .stream of drops.
  • the means for selectively electrically charging the drops of liquid in said stream may be adapted to apply the same charge to the selected drops.
  • the said means is adapted to place charges on the selected drops which vary according to the position along the path of traverse of a said surface that each drop is required to occupy on the said surface.
  • the means for establishing a steady electric field about the path of travel of said stream of drops may comprise opposed deflecting plates arranged on opposite sides of the path of travel of the stream of drops.
  • the path of travel of the surface to which the liquid is to be applied may be between one of said deflector plates and the path of travel of the stream of drops.
  • the apparatus illustrated therein comprises a nozzle 1 having an inlet 2 whereby it can be connected to a source of liquid under pressure (not shown) and piezo electric stimulating means 3, e.g., in the form of a bimorph or a unimorph.
  • the nozzle 1 is adapted to produce a single stream 3 of liquid which under the stimulation of the stimulating means 3 breaks up into uniformly spaced and uniformly sized drops 5 which are directed along a path towards a drain or gutter 6 which traverses and is perpendicular to the path of travel of a web 7 extending between a feed roller 8 and a take up roller 9.
  • the apparatus further comprises a charge electrode or electrodes 10 for selectively variably charging the drops 5 and a pair of opposed deflector plates 11 which are arranged on either side of the path of travel of the drops 5 and which are suitably connected into an electric circuit (not shown) for applying either a positive or negative charge thereto so that a steady electric field will be established therebetween.
  • the path of travel of the web 7 is between the lower deflector plate 11 and the path of travel of the stream of drops 5.
  • the uncharged drops 5 When the apparatus in Figure 1 is in use the uncharged drops 5 will pass in a straight line between the deflector plates 11 to the drain or gutter 6 whilst the charged drops 5 will be deflected onto the surface of the web 7 at a selected position across the width thereof depending upon the strength of the charge applied to each individual drop as indicated at 5a and 5b.
  • the selected drops 5 By selectively varying the charge applied to the selected drops 5 and coordinating this with the speed of travel of the web 7 the selected drops 5 can be deposited at any required selected position on the web 7.
  • a second nozzle 1 and associated charge electrode or electrodes may be located on the opposite side of the web 7 so that each nozzle 1 is adapted to supply drops for depositing oven say, half the width of the web 7.
  • the upper deflector plate 11 has been replaced by a series of upper deflector plates 12 which carry increasingly stronger charges the further they are from the nozzle 1.
  • the strength of the steady electric field between the deflector plates 11 and 12 is of increasing strength the further it is from the nozzle 1 and this serves to steepen the trajectory of the more weakly charged drops as they are deflected towards the surface of the web 7.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
EP83304567A 1982-08-09 1983-08-08 Vorrichtung und Verfahren zum Aufbringen einer Flüssigkeit auf eine Oberfläche Withdrawn EP0101280A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8222864 1982-08-09
GB8222864 1982-08-09

Publications (1)

Publication Number Publication Date
EP0101280A1 true EP0101280A1 (de) 1984-02-22

Family

ID=10532194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304567A Withdrawn EP0101280A1 (de) 1982-08-09 1983-08-08 Vorrichtung und Verfahren zum Aufbringen einer Flüssigkeit auf eine Oberfläche

Country Status (5)

Country Link
EP (1) EP0101280A1 (de)
AU (1) AU1766083A (de)
DK (1) DK360683A (de)
FI (1) FI832839A (de)
ZA (1) ZA835807B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172709A1 (de) * 1982-08-09 1986-02-26 Willett International Limited Verfahren zum Anbringen von Klebstofftröpfchen mittels eines Tintenstrahldruckers
GB2180780A (en) * 1985-09-27 1987-04-08 Hauni Werke Koerber & Co Kg Applying adhesive to a running web of wrapping material for tobacco products
EP1338345A1 (de) * 2002-02-12 2003-08-27 Seiko Epson Corporation Verfahren und Vorrichtungen zur Bildung eines Filmes, zur Herstellung eines Farbfilters und zur Herstellung einer Anzeigevorrichtung
CN108739770A (zh) * 2018-08-01 2018-11-06 山东省农药科学研究院 一种电场偏转式省药静电喷雾装置及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124163A (en) * 1964-09-25 1968-08-21 Clevite Corp Electrically operated character printer
DE2758144A1 (de) * 1976-12-27 1978-07-06 Ibm Tintenstrahlmatrixdrucker
DE3110260A1 (de) * 1980-03-17 1982-02-25 Ricoh Co., Ltd., Tokyo Elektrostatischer farbstrahldrucker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124163A (en) * 1964-09-25 1968-08-21 Clevite Corp Electrically operated character printer
DE2758144A1 (de) * 1976-12-27 1978-07-06 Ibm Tintenstrahlmatrixdrucker
DE3110260A1 (de) * 1980-03-17 1982-02-25 Ricoh Co., Ltd., Tokyo Elektrostatischer farbstrahldrucker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172709A1 (de) * 1982-08-09 1986-02-26 Willett International Limited Verfahren zum Anbringen von Klebstofftröpfchen mittels eines Tintenstrahldruckers
GB2180780A (en) * 1985-09-27 1987-04-08 Hauni Werke Koerber & Co Kg Applying adhesive to a running web of wrapping material for tobacco products
EP1338345A1 (de) * 2002-02-12 2003-08-27 Seiko Epson Corporation Verfahren und Vorrichtungen zur Bildung eines Filmes, zur Herstellung eines Farbfilters und zur Herstellung einer Anzeigevorrichtung
EP1598120A3 (de) * 2002-02-12 2005-11-30 Seiko Epson Corporation Verfahren und Vorrichtungen zur Bildung eines Filmes, zur Herstellung eines Farbfilters und zur Herstellung einer Anzeigevorrichtung
US7368149B2 (en) 2002-02-12 2008-05-06 Seiko Epson Corporation Display device having a color filter
CN108739770A (zh) * 2018-08-01 2018-11-06 山东省农药科学研究院 一种电场偏转式省药静电喷雾装置及其使用方法

Also Published As

Publication number Publication date
FI832839A0 (fi) 1983-08-08
DK360683D0 (da) 1983-08-08
FI832839A (fi) 1984-02-10
AU1766083A (en) 1984-02-16
DK360683A (da) 1984-02-10
ZA835807B (en) 1984-04-25

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840621

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19850606

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WILLETT, ALLAN

Inventor name: KEELING, MICHAEL RICHARD