US3647138A - Coating head subassembly with cleanout port - Google Patents

Coating head subassembly with cleanout port Download PDF

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Publication number
US3647138A
US3647138A US877255A US3647138DA US3647138A US 3647138 A US3647138 A US 3647138A US 877255 A US877255 A US 877255A US 3647138D A US3647138D A US 3647138DA US 3647138 A US3647138 A US 3647138A
Authority
US
United States
Prior art keywords
plate
coating head
orifices
coating
port
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.)
Expired - Lifetime
Application number
US877255A
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English (en)
Inventor
Philip H Houser
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.)
Eastman Kodak Co
Original Assignee
Mead 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 Mead Corp filed Critical Mead Corp
Application granted granted Critical
Publication of US3647138A publication Critical patent/US3647138A/en
Assigned to EASTMAN KODAK COMPANY A NJ CORP. reassignment EASTMAN KODAK COMPANY A NJ CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MEAD CORPORATION THE A CORP. OF OH
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
    • B41J2/025—Ink jet characterised by the jet generation process generating a continuous ink jet by vibration
    • 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
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads

Definitions

  • ABSTRACT PP Nod 877,255 in the construction of a laminated coating head in which drops of coating material are ejected from very small orifices in an orifice plate toward a web or other article to be coated the [52] US. CL ..239/104, 623325735, Orifice P18 m, the filter plate and an inlet plate are first assem [5 I] In. CL 6 5/08 bled in what is termed a "clean package" and flushed through [58] Field 553 a port in the inlet plate with a cleaning fluid to insure that no 4 particles large enough to clog the orifices have been trapped in the coating head during construction thereof. Compressed air may also be blown into the assembly during flushing and [56] References Cited following flushing, the port on the inlet plate is sealed and the UNITED STATES PATENTS remaining components attached to the clean package.”
  • the dimensions of the various components of the system are relatively small, particularly the openings through the components of the coating head. Therefore, it would be a relatively simple matter for small particles to lodge in the coating head and block the orifices through which the coating is ejected. It is desirable, therefore, to provide some means to insure that any foreign objects of a size larger than the smallest openings into the coating apparatus, which are the orifices in the orifice plate, are cleaned from the system before the components ofthe coating-head are assembled.
  • the orifice plate and filter plate are first assembled with an inlet plate positioned therebetween to provide a chamber and a cleaning fluid flushed through this subassembly..-ofv components-to subject them to a meticulous cleaning action.
  • a cleanout port is formedin the inlet plateso that cleaningfluid pumped into'the subassembly through the filter plate may pass out the cleanout port and compressed air may also be blownthrough the orifices to insure that they are free of foreign materialsor to remove any foreign materials which may become entrapped therein during the flushing process.
  • FIG. 1 is an exploded perspective view showing, somewhat schematically, the various components of a laminated coating head
  • FIG. 2- is a perspective view showing thesub-assembly during the flushingprocess.
  • a typical laminated coating head may comprise a manifold having a chamber 11 opening outwardly, as at 12, and a conduit l3-for delivering coating material to the chamber 11.
  • a filter plate 20. is positioned immediately beneath the manifold 10 with. gaskets 21' and 22 on either side thereof to prevent leakage around the filter plate whenthe components are assembled.
  • An inlet plate-30 having a slot 31 formed longitudinally thereof and a series of passages 32 extending from the slot to the lower surface of the inlet plate is positioned immediately beneath the filter plate 20. Adjacent one end of the'inlet plate 30 andincommunication with'the. slot 31 is aicleanout port v33 which-is normally closed by acover plate 34attached to the inlet plate by means of bolts or' the like.
  • An orifice plate having aseries of orifices 41 through which coating isejectedv is positioned beneath the inlet plate 30 with its openings concentrically positioned with respect to the passages 32.
  • a spacer plate 50 is mounted beneath the orifice plate 40 and serves to space the charge ring plate 51 the proper distance from the orifice plate toimpart a charge on drops of coating material just before they break from the filament of coating being ejected through-the orifices M.
  • the charge ring plate 50 has aseries of charge rings 52 connected through leads 53 and connectors 54 to a source of power 55, whereby an electric charge may be imparted to drops of coating material as they are ejected from the orifices 41.
  • the charge ring plate 51 may conveniently be constructed by conventional printed circuit techniques although the degree of precision required will be somewhat greater than that usually necessary for conventional printed circuits.
  • a clamp plate 56 is positioned adjacent the charge ring plate 51 and a series of bolts, not shown, pass downwardly through all of the components of the laminated coating head and are threadedly received in the clamp plate to secure the components together in laminar relationship.
  • a pair of electrodes 57 are positioned downstream of the charge plate 51 and all drops, whether charged or uncharged, pass through the electrostatic fieldset up by the electrodes 57 and, are accordingly, deflected or not deflected dependingupon whether or not they have received a charge as they pass through the charge ring plate.
  • a catcher 58 than catches those drops of coating material which it is desired to prevent from being deposited on the article being coated, all as described in the above-noted related application, Ser. No. 768,790.
  • the orifice plate 40,filter plate 20 and inlet plate 30 are preassembled to form what is known as a clean package.” A cleaning fluid is then pumped through these components to flush .them out thoroughly.
  • the manifold 10 may be conveniently connected to the filter plate 20 and a cleaning fluid pumped through the conduit 13 and 'thence,downwardly .through the perforations in the perforated central portion of the .filter plate.
  • the cleanout port 33 in the inlet plate 30 is opened by removing the cover 34and the cleaning fluid,
  • the present invention provides means for preventing malfunctioning of the coating apparatus of the type disclosed herein by clogging of the openings through any of thecomponents-through the introduction of foreign materials during assembly thereof.
  • an inlet plate member interposed between said filter plate and said orifice plate and having an elongated slot formed therein defining an enclosed space extending between and interconnecting said perforations and said orifices; 5 and d. a cleanout port extending from an external wall of said inlet plate member and communicating with said slot.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US877255A 1969-11-17 1969-11-17 Coating head subassembly with cleanout port Expired - Lifetime US3647138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87725569A 1969-11-17 1969-11-17

Publications (1)

Publication Number Publication Date
US3647138A true US3647138A (en) 1972-03-07

Family

ID=25369565

Family Applications (1)

Application Number Title Priority Date Filing Date
US877255A Expired - Lifetime US3647138A (en) 1969-11-17 1969-11-17 Coating head subassembly with cleanout port

Country Status (9)

Country Link
US (1) US3647138A (fr)
AU (1) AU2110770A (fr)
BE (1) BE759036A (fr)
CH (1) CH528927A (fr)
DE (1) DE2054424A1 (fr)
FR (1) FR2069493A5 (fr)
GB (1) GB1324279A (fr)
NL (1) NL7015849A (fr)
SE (1) SE359947B (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776461A (en) * 1971-10-04 1973-12-04 Casio Computer Co Ltd Nozzle device for ink jet printing equipments
US4031561A (en) * 1976-05-03 1977-06-21 The Mead Corporation Startup apparatus and method for jet drop recording with relatively movable charge plate and orifice plate
US4547785A (en) * 1984-04-23 1985-10-15 The Mead Corporation Apparatus and method for drop deflection
US6126087A (en) * 1999-02-02 2000-10-03 Graves Spray Supply, Inc. Flowcoat resin spray nozzle and reversing structure for cleaning
US20030029037A1 (en) * 2000-06-29 2003-02-13 Debesis John R. Laminate and gasket manifold for ink jet delivery systems and similar devices
US20070188542A1 (en) * 2006-02-03 2007-08-16 Kanfoush Dan E Apparatus and method for cleaning an inkjet printhead
US20080186352A1 (en) * 2007-02-07 2008-08-07 Hiroyuki Sasayama Ink-jet head maintenance device, ink-jet recording device and ink-jet head maintenance method
US20090021542A1 (en) * 2007-06-29 2009-01-22 Kanfoush Dan E System and method for fluid transmission and temperature regulation in an inkjet printing system
US8888208B2 (en) 2012-04-27 2014-11-18 R.R. Donnelley & Sons Company System and method for removing air from an inkjet cartridge and an ink supply line
TWI610822B (zh) * 2015-05-22 2018-01-11 佳能股份有限公司 液體排出設備、壓印設備、和製造組件的方法
US10124597B2 (en) 2016-05-09 2018-11-13 R.R. Donnelley & Sons Company System and method for supplying ink to an inkjet printhead
US10137691B2 (en) 2016-03-04 2018-11-27 R.R. Donnelley & Sons Company Printhead maintenance station and method of operating same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373437A (en) * 1964-03-25 1968-03-12 Richard G. Sweet Fluid droplet recorder with a plurality of jets
US3485706A (en) * 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373437A (en) * 1964-03-25 1968-03-12 Richard G. Sweet Fluid droplet recorder with a plurality of jets
US3485706A (en) * 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776461A (en) * 1971-10-04 1973-12-04 Casio Computer Co Ltd Nozzle device for ink jet printing equipments
US4031561A (en) * 1976-05-03 1977-06-21 The Mead Corporation Startup apparatus and method for jet drop recording with relatively movable charge plate and orifice plate
US4547785A (en) * 1984-04-23 1985-10-15 The Mead Corporation Apparatus and method for drop deflection
US6126087A (en) * 1999-02-02 2000-10-03 Graves Spray Supply, Inc. Flowcoat resin spray nozzle and reversing structure for cleaning
US20030029037A1 (en) * 2000-06-29 2003-02-13 Debesis John R. Laminate and gasket manifold for ink jet delivery systems and similar devices
US6789884B2 (en) * 2000-06-29 2004-09-14 Eastman Kodak Company Laminate and gasket manifold for ink jet delivery systems and similar devices
US20070188542A1 (en) * 2006-02-03 2007-08-16 Kanfoush Dan E Apparatus and method for cleaning an inkjet printhead
US7918530B2 (en) 2006-02-03 2011-04-05 Rr Donnelley Apparatus and method for cleaning an inkjet printhead
US8240808B2 (en) * 2007-02-07 2012-08-14 Fujifilm Corporation Ink-jet head maintenance device, ink-jet recording device and ink-jet head maintenance method
US20080186352A1 (en) * 2007-02-07 2008-08-07 Hiroyuki Sasayama Ink-jet head maintenance device, ink-jet recording device and ink-jet head maintenance method
US20090021542A1 (en) * 2007-06-29 2009-01-22 Kanfoush Dan E System and method for fluid transmission and temperature regulation in an inkjet printing system
US8888208B2 (en) 2012-04-27 2014-11-18 R.R. Donnelley & Sons Company System and method for removing air from an inkjet cartridge and an ink supply line
TWI610822B (zh) * 2015-05-22 2018-01-11 佳能股份有限公司 液體排出設備、壓印設備、和製造組件的方法
US10384451B2 (en) 2015-05-22 2019-08-20 Canon Kabushiki Kaisha Liquid discharge apparatus, imprint apparatus, and method of manufacturing a component
US10137691B2 (en) 2016-03-04 2018-11-27 R.R. Donnelley & Sons Company Printhead maintenance station and method of operating same
US10124597B2 (en) 2016-05-09 2018-11-13 R.R. Donnelley & Sons Company System and method for supplying ink to an inkjet printhead

Also Published As

Publication number Publication date
DE2054424A1 (de) 1971-05-27
CH528927A (de) 1972-10-15
FR2069493A5 (fr) 1971-09-03
GB1324279A (en) 1973-07-25
BE759036A (fr) 1971-04-30
AU2110770A (en) 1972-04-20
SE359947B (fr) 1973-09-10
NL7015849A (fr) 1971-05-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: EASTMAN KODAK COMPANY A NJ CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MEAD CORPORATION THE A CORP. OF OH;REEL/FRAME:004237/0482

Effective date: 19831206