US3925791A - Pattern printing apparatus - Google Patents

Pattern printing apparatus Download PDF

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Publication number
US3925791A
US3925791A US479178A US47917874A US3925791A US 3925791 A US3925791 A US 3925791A US 479178 A US479178 A US 479178A US 47917874 A US47917874 A US 47917874A US 3925791 A US3925791 A US 3925791A
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US
United States
Prior art keywords
disc
housing
opening
printing
plate
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
US479178A
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English (en)
Inventor
David Patrick Hunt
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.)
Cambridge Consultants Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US3925791A publication Critical patent/US3925791A/en
Assigned to CAMBRIDGE CONSULTANTS LIMITED, A BRITISH COMPANY reassignment CAMBRIDGE CONSULTANTS LIMITED, A BRITISH COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: IMPERIAL CHEMICAL INDUSTRIES LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules

Definitions

  • FIG III U.S. Patent Dec. 9, 1975 Sheet 3 of3 3,925,791
  • This invention relates to pattern printing apparatus and more particularly to such apparatus adapted to print by depositing on a printing surface during relative movement between the apparatus and the printing surface successive rows of closely spaced drops extending transversely to said direction of relative movement.
  • a pattern printing apparatus adapted to print by depositing on a printing surface during relative movement between the apparatus and the printing surface small drops of printing liquid in successive rows of closely spaced drops extending transversely to said direction of relative movement, comprising a row of printing guns disposed transversely to said direction of relative movement, each gun having an orifice, printing liquid supply means for supplying liquid under pressure to the orifice to form a jet of printing liquid directed towards the location in the apparatus of the printing surface, means for imparting regularly spaced variations in the cross-section of the jet to stimulate drop formation, charge electrode means located adjacent the position in the jet path of drop separation to effect charging of drops formed in the jet path, drop deflection means to provide a substantially constant electrostaticfield through which pass the drops formed in the jet path thereby to deflect electrically charged drops to an extent depending upon the charge levels on the drops, and, a drop intercepting device for intercepting uncharged drops formed in the jet path, characterised in that there are provided signal generating means which
  • hypodermic tubes of suitable diameter are used for each of the orifices, the said hypodermic tubes being mounted in line in the housing which is attached to the manifold making up each row of printing guns.
  • each of the orifices from a disc which carries a hole of the requisite diameter and which is independently mounted on the housing.
  • the present invention is directed to pattern printing apparatus of the type just described characterised in that each printing gun has an orifice from which emerges a jet of printing liquid, the improvement comprising the use, as the orifice, of a disc having a hole of the requisite diameter, said disc being independently mounted on the housing of the printing gun.
  • each jet By independently mounting each of the discs on the housing each jet can be individually aligned thus ensuring great accuracy in the line of drops reaching the printing surface from a row of such printing guns.
  • each disc is individually and rigidly mounted on a plate which is itself attached to the housing by an adjustable mounting, or each disc is retained in placebehind a plate which is itself attached to the housing by an adjustable mounting. In both cases adjustment of the plate automatically adjusts the position of the disc thus re-aligning the jet of printing liquid.
  • FIG. I represents a vertical cross-section of the orifice and FIG. II a view from underneath.
  • FIG. III which is a vertical cross-section of the orifice illustrates an alternative method of adjusting the disc
  • FIG. IV which is a view from underneath, illustrates an arrangement of the plates in a row of printing guns.
  • the printing gun described in FIGS. 1 and II comprises a housing I which is attached to a manifold 3, the housing carrying a central hole 2 of larger diameter than that of the hole 7 present in the disc 6, and the hole 2 extending from the manifold 3 to the case of the housing 1.
  • Attached to the case of the housing 1 by screws 8 which fit into threaded holes in the housing are a flexible compressible washer 4 made of, for example, rubber, plastic or other suitable deformable material and a plate 5, having a central hole, on which is mounted the disc 6 having a hole 7 of the requisite diameter for the nozzle of the printing gun. Adjustment of the screws 8 moves the plate carrying the disc thus re-aligning the jet of printing liquid issuing from the nozzle when printing liquid is supplied to the nozzle via the manifold 3 and the central hole 2.
  • FIG. III of the accompanying drawings represents a cross-section of the lower portion of the printing gun.
  • the printing gun comprises a housing 21 which is attached to a manifold (not shown), the housing carrying a central hole 22 which can be cylindrical or cone or horn shaped. Printing ink from the manifold passes into the central hole 22.
  • the lower portion of the housing 21 contains a central recess 35 preferably of circular cross-section.
  • This central recess 15 contains a flexible compressible washer 30 and the disc 26 having a hole 27 of the requisite diameter.
  • the disc 26 and washer 30 are held in position in the central recess 35 by means of a plate 31 having a central hole 36 which is of larger diameter than the hole 27 in the disc 26.
  • the plate 31 contains three holes 33 which correspond to holes 34 in the bottom flange 37 of the housing 21, and the plate 31 is attached to the housing 21 by means of bolts and nuts 32 which pass through the respective holes 33 and 34. Alignment of the jet of printing liquid which issues from the hole 27 in the disc 26 when printing liquid is fed from the manifold into the central hole 22 is achieved by adjustment of one or more of the bolts and nuts 32. In place of the bolts and nuts 32 there can be used bolts which fit into threaded holes in the housing 21.
  • the plate 31 can be circular in shape. However in view of the close proximity of the printing guns in a row to each other thus limiting the overall size of each of the plates 31 it is often advantageous to have such plates of triangular cross-section, the said plates being arranged alternatively as depicted in FIG. [V which represents a view from underneath of a number of nozzles in a row.
  • This particular form of the apparatus comprises a housing 41 which is attached to a manifold (not shown). Attached to the underneath of the housing 41 are a number of plates 31 of triangular shape each of which is attached to the housing by three bolts and nuts 32. Each plate 31 contains a central hole 36 which are all situated in a line running the full length of the housing 41. Positioned between each plate 31 and the housing 41 is a disc 26 having a hole 27 and a soft washer (not shown), the discs being so positioned that each of the holes 27 is in the centre of a hole 36 and the holes 27 are also situated in a line running the full length of the housing 41.
  • printing liquid supplied via the manifold I issues in jets from each of the holes 27 and alignment of these jets is achieved by adjusting one or more of the bolts and nuts 32 in each plate 31.
  • each disc comprises a jewel, such as a synthetic sapphire, having a hole of the requisite diameter.
  • the said holes can be cylindrical, but preferably are funnel shaped (in vertical cross section) so that the printing liquid enters from the wider side of the hole and emerges from the narrow side (as depicted in FIG. Ill). Such a form of hole in the disc leads to much more uniform jets.
  • the printing guns of the present invention are used in 'place'of the printing guns described in Belgian Patent Specifications Nos. 771,808 and 801,757, the resulting apparatus being operated in the manner previously described.
  • An improved adjustable nozzle for pattern printing equipment having a plurality of printing guns each having a nozzle from which emerges a jet of printing liquid, the nozzle comprising:
  • a housing having interior walls defining an opening extending therethrough
  • a plate member having a surface defining a plane and an opening extending therethrough, said plate member being adjustably mounted on said housing so that the opening in said plate member communicates with the opening in said housing,
  • a compressible member having an opening extending therethrough, said compressible member being positioned between said plate member and said housing such that the opening in said compressible member communicates with the opening in said housing,
  • a disc member having interior walls defining an opening extending therethrough, said opening having an axis through the center thereof and said disc member being positioned in contact with said plate member so that the opening in said disc member communicates with the opening in said plate member,
  • positioning means for holding said compressible member, said plate member and thereby said disc member on said housing, said positioning means being adjustable to move said plate member with respect to said housing thereby changing the degree of compression of said compressible member to move the plane defined by said plate member and moving the axis of said opening in said disc member whereby the direction of flow of printing liquid emerging from the opening in said disc member is alterable.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Facsimile Heads (AREA)
  • Nozzles (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Treatment Of Fiber Materials (AREA)
US479178A 1973-06-13 1974-06-13 Pattern printing apparatus Expired - Lifetime US3925791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2816973A GB1462193A (en) 1973-06-13 1973-06-13 Pattern printing apparatus

Publications (1)

Publication Number Publication Date
US3925791A true US3925791A (en) 1975-12-09

Family

ID=10271381

Family Applications (1)

Application Number Title Priority Date Filing Date
US479178A Expired - Lifetime US3925791A (en) 1973-06-13 1974-06-13 Pattern printing apparatus

Country Status (11)

Country Link
US (1) US3925791A (de)
JP (1) JPS5734099B2 (de)
BE (1) BE816306R (de)
CA (1) CA1014218A (de)
CS (1) CS172280B2 (de)
DD (1) DD116022A6 (de)
DE (1) DE2428308C2 (de)
FR (1) FR2233106B2 (de)
GB (1) GB1462193A (de)
IT (1) IT1054171B (de)
NL (1) NL7407895A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003683A1 (en) * 1981-04-13 1982-10-28 Ncr Co Ink jet print head and method of controlling the flight path of ink droplets ejected therefrom
US4357614A (en) * 1980-10-07 1982-11-02 Fuji Xerox Co., Ltd. Ink particle jetting device for multi-nozzle ink jet printer
FR2575741A1 (fr) * 1985-01-09 1986-07-11 Inst Francais Du Petrole Obtention d'une offretite synthetique riche en silice. application a la production d'hydrocarbures riches en olefines legeres par transformation du methanol et/ou de dimethylether
US4714936A (en) * 1985-06-24 1987-12-22 Howtek, Inc. Ink jet printer
US5113204A (en) * 1989-04-19 1992-05-12 Seiko Epson Corporation Ink jet head
US5166682A (en) * 1991-03-07 1992-11-24 Sundstrand Corporation Ground proximity warning instrument utilizing glideslope modulation of excessive descent rate envelope
US6332667B1 (en) * 1997-10-07 2001-12-25 Tokyo Kikai Seisakusho, Ltd. Orifice member of nozzle for ink-jet printing
WO2006002143A2 (en) * 2004-06-18 2006-01-05 Matthews Resources, Inc. Methods and arrangements for adjusting and aligning fluid dispensing devices and the like such as continuous ink jet printheads
US20060284930A1 (en) * 2005-06-21 2006-12-21 George Mejalli Methods and arrangements for adjusting and aligning fluid dispensing devices and the like such as continuous ink jet printheads

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736431Y2 (de) * 1976-10-25 1982-08-11
JPS57113075A (en) * 1980-12-30 1982-07-14 Fujitsu Ltd Ink jet head
JPS58108162A (ja) * 1981-12-23 1983-06-28 Ricoh Co Ltd インクジエツトヘツド
DE3607992A1 (de) * 1985-04-08 1986-10-09 VEB Kombinat Robotron, DDR 8010 Dresden Tintenstrahldruckkopf mit tintenviskositaetsabhaengiger daempfungseinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524408A (de) * 1968-12-09 1972-06-30 Mead Corp Vorrichtung für eine genaue räumliche und zeitliche Ablagerung von in einer Folge gebildeten kleinen Flüssigkeitstropfen
JPS4721628U (de) * 1971-02-19 1972-11-10

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Vol. 15, No. 3, Aug. 1972, Kotasek, "Replaceable Ink Jet Nozzle" *
IBM Technical Disclosure Bulletin, Vol. 15, No. 5, Oct. 1972, Meier, "Mech. X-Y Aiming..." … *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357614A (en) * 1980-10-07 1982-11-02 Fuji Xerox Co., Ltd. Ink particle jetting device for multi-nozzle ink jet printer
WO1982003683A1 (en) * 1981-04-13 1982-10-28 Ncr Co Ink jet print head and method of controlling the flight path of ink droplets ejected therefrom
US4376944A (en) * 1981-04-13 1983-03-15 Ncr Corporation Ink jet print head with tilting nozzle
FR2575741A1 (fr) * 1985-01-09 1986-07-11 Inst Francais Du Petrole Obtention d'une offretite synthetique riche en silice. application a la production d'hydrocarbures riches en olefines legeres par transformation du methanol et/ou de dimethylether
US4714936A (en) * 1985-06-24 1987-12-22 Howtek, Inc. Ink jet printer
US5113204A (en) * 1989-04-19 1992-05-12 Seiko Epson Corporation Ink jet head
US5166682A (en) * 1991-03-07 1992-11-24 Sundstrand Corporation Ground proximity warning instrument utilizing glideslope modulation of excessive descent rate envelope
US6332667B1 (en) * 1997-10-07 2001-12-25 Tokyo Kikai Seisakusho, Ltd. Orifice member of nozzle for ink-jet printing
WO2006002143A2 (en) * 2004-06-18 2006-01-05 Matthews Resources, Inc. Methods and arrangements for adjusting and aligning fluid dispensing devices and the like such as continuous ink jet printheads
WO2006002143A3 (en) * 2004-06-18 2006-06-01 Matthews Resources Inc Methods and arrangements for adjusting and aligning fluid dispensing devices and the like such as continuous ink jet printheads
US20060284930A1 (en) * 2005-06-21 2006-12-21 George Mejalli Methods and arrangements for adjusting and aligning fluid dispensing devices and the like such as continuous ink jet printheads

Also Published As

Publication number Publication date
JPS50124534A (de) 1975-09-30
FR2233106A2 (de) 1975-01-10
NL7407895A (de) 1974-12-17
BE816306R (fr) 1974-12-13
DE2428308A1 (de) 1975-01-16
DD116022A6 (de) 1975-11-05
FR2233106B2 (de) 1977-10-07
IT1054171B (it) 1981-11-10
CA1014218A (en) 1977-07-19
GB1462193A (en) 1977-01-19
JPS5734099B2 (de) 1982-07-21
DE2428308C2 (de) 1986-01-02
CS172280B2 (de) 1976-12-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CAMBRIDGE CONSULTANTS LIMITED, SCIENCE PARK, MILTO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:IMPERIAL CHEMICAL INDUSTRIES LIMITED;REEL/FRAME:003859/0780

Effective date: 19801128