US3655530A - Fabrication of orifices - Google Patents

Fabrication of orifices Download PDF

Info

Publication number
US3655530A
US3655530A US46395A US3655530DA US3655530A US 3655530 A US3655530 A US 3655530A US 46395 A US46395 A US 46395A US 3655530D A US3655530D A US 3655530DA US 3655530 A US3655530 A US 3655530A
Authority
US
United States
Prior art keywords
aperture
orifice plate
sectional area
apertures
filament
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
US46395A
Inventor
Richard P Taylor
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 US3655530A publication Critical patent/US3655530A/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

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00Electroplating characterised by the article coated
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/003Electroplating using gases, e.g. pressure influence

Definitions

  • ABSTRACT A method and apparatus for fabricating an aperture of predetermined cross-sectional area in an orifice plate for use in a non-contact printer, includes the steps of fabricating in the orifice plate an aperture of cross-sectional area no less than the predetermined cross-sectional area, flowing an electrolytic deposition solution under pressure through the aperture, applying a constant frequency stimulating disturbance to the stream of electrolytic deposition solution emerging from the aperture, placing an electrically conductive surface in the path of the stream and at a distance from the orifice plate equal to the unbroken filament length of said stream through an aperture of the predetermined cross-sectional area, causing the deposition solution to deposit on the walls of the aperture by connecting the orifice plate and the electrically conductive surface to opposite sides of a source of electric potential whereby the unbroken filament comprises part of the closed electro-deposition circuit, and continuing to supply the electrolytic deposition solution to the aperture until the aperture attains the predetermined cross-sectional area thereby producing filament breakup ahead of the electrically conductive surface and automatically opening the electro-
  • an array of orifice plates is employed with a. corresponding increase in the number of apertures.
  • the presence of a great number of apertures requires that they be of sufficient uniformity in size to minimize loss inthe resolution and clarity of the printed material.
  • the present invention employs a method and apparatus to produce uniform apertures for use in a non-contact printing system.
  • An orifice plate is provided with pre-formed apertures or holes, the diameter of the holes being at least the size of the predetermined diameter desired.
  • Liquid is supplied to the orifice plate under pressure.
  • the liquid supplied is an electrolytic solution containing, for example, nickel ions, and is flowed through each aperture or hole in. the orifice plate. Suitable bar. A potential difference is broken filament reaches the contact bar. As a result, metal from the electrolyte liquid is caused to deposit or plate on the wall of the'apertures.
  • this filament is dependent primarily upon fluid pressure, fluid viscosity, stimulation frequency and the diameter or cross-section of the apertures. As the deposition builds up on the inside of the apertureand decreases the diameter of the aperture, the filament length will shorten, eventually not reaching and impinging on the contact bar. As a result, the
  • the primary object of this invention is, therefore, to provide such.a method of forming small apertures to predetermined size, and to provide apparatus for this method.
  • FIG. 1 is an exploded view of the uniform aperture forming device
  • FIG. 2 is a diagrammatic fragmentary view of the device
  • FIG. 3 depicts an assembled drop generator unit
  • FIG. 4 is an enlarged view of a single aperture.
  • a fluid reservoir 10 has a fluid supply line 11 and a stimulator 12 attached thereto.
  • the orifice plate 15 has apertures or holes 17 predrilled or otherwise formed to a diameter not less than the predetermined desired diameter.
  • a contact bar 20 is positioned below orifice plate 15. In order that the apertures 17 will attain uniform cross-sectional areas, bar 20 is positioned directly below orifice plate 15 and parallel therewith. Bar 20 and orifice plate 15 are each connected to opposite sides of a DC. potential difference source 22.
  • potential source 22 will ordinarily be connected on the positive side to contact bar 20 and on the negative side to orifice plate 15. This relation will cause the contact plate to act as the anode in the circuit.
  • the plate 15 is fitted to the reservoir, and an electrolytic solution is caused to flow into reservoir 10 through fluid supply line 11, as indicated in FIG. 2.
  • Stimulator 12 induces drops 25 to form at the end of liquid filaments 30 at a frequency equal to the oscillation frequency of stimulator 12.
  • the electric circuit is complete, and metal from the electrolytic solution is caused to deposit or plate on the inside walls of apertures 17, as seen in FIG. 4.
  • the crosssectional area of each aperture 17 decreases in size, the length of the corresponding filament 30 decreases until the point of drop formation is above the bar 20. Since only drops are now reaching bar 20, the circuit is broken as to the corresponding filament, and electrolytic deposition in the aperture ceases.
  • uniformly sized apertures 17 may be obtained. Each one is controlled in size independently of the others.
  • the coating ions of this invention are supplied from a continually flowing fluid rather than from the anode of electrodeposition circuit.
  • the anode may be any conductive material such as graphite.
  • the contact plate should not be made of a material which will be coated by the ions from the fluid since deposition of the ions on the contact plate will decrease the anode-orifice distance. Even the plating liquid itself may serve as an anode if it is pooled below the orifice plate and held at a constant level. Conversely it is desirable that the anode not function as a donor of coating material because the accompanying etching of the anode surface would increase the anode-orifice distance.
  • FIG. 3 depicts a drop generator employing an aperture 17 fabricated by the above method and apparatus.
  • Liquid such as ink
  • the resulting liquid filaments 34 break into drops, and a stimulating means in the form of vibrator 35 causes the drops to form at a frequency which is common to all filaments, resulting in drops of essentially equal size and spacing.
  • gasket 36 Beneath the orifice plate is gasket 36, and a charging assembly in the form of plate 37 having openings in which charging electrode rings 38 are carried. Suitable electrical insulation (not shown) is provided between rings 38, such as by an insulating coating on plate 37.
  • a spacer plate 42 of electrically insulating material, is fastened below the charging assembly. Below the spacer plate is grounded guard electrode plate 44 on top of an electrostatic deflection assembly, comprising insulating support bars 45 mounting deflection electrodes 47 across which a substantial potential difference is applied. Uncharged drops follow a straight trajectory and deposit on moving web 50, which preferably is moved at constant velocity correlated to the drop generating frequency so that a continuous line of drops will cause an essentially continuous mark or trace along the web. Charged drops will follow a curved trajectory due to the deflecting field, and these drops are removed from the system through a catcher assembly 55.
  • the present invention has been described with reference to fabricating uniform apertures for use in a noncontacting printing system, it is to be understood that the present invention may be employed for any other purpose where apertures of uniform size are desired, e.g., in fabricating nozzles for a fuel injection apparatus.
  • Apparatus for fabrication of an aperture of predetermined cross-sectional area in an orifice plate comprising a. an orifice plate having at least one aperture of cross-sectional area greater than said predetermined cross-sectional area,
  • c. means producing stimulation of a predetermined constant frequency to the filament of deposition solution issuing from the aperture
  • an electrically conductive surface mounted in spaced relation to said orifice plate such that said surface intercepts the path of said stream and at a distance from said orifice plate equal to the maximum unbroken filament length of said stream for an aperture having said predetermined cross-sectional area
  • a drop generator including a chamber for supply of liquid from a common source to all of the apertures

Abstract

A method and apparatus for fabricating an aperture of predetermined cross-sectional area in an orifice plate for use in a non-contact printer, includes the steps of fabricating in the orifice plate an aperture of cross-sectional area no less than the predetermined cross-sectional area, flowing an electrolytic deposition solution under pressure through the aperture, applying a constant frequency stimulating disturbance to the stream of electrolytic deposition solution emerging from the aperture, placing an electrically conductive surface in the path of the stream and at a distance from the orifice plate equal to the unbroken filament length of said stream through an aperture of the predetermined cross-sectional area, causing the deposition solution to deposit on the walls of the aperture by connecting the orifice plate and the electrically conductive surface to opposite sides of a source of electric potential whereby the unbroken filament comprises part of the closed electro-deposition circuit, and continuing to supply the electrolytic deposition solution to the aperture until the aperture attains the predetermined cross-sectional area thereby producing filament breakup ahead of the electrically conductive surface and automatically opening the electro-deposition circuit.

Description

United States Patent Taylor 154] FABRICATION OF ORIFICES [72] Inventor: Richard P. Taylor, Chillicothe, Ohio 73] Assignee: The Mead Corporation, Dayton, Ohio [22] Filed: June 15, 1970 [2]] Appl. No.: 46,395
Primary Examiner-John l-l. Mack Assistant Examiner-T. Tufariello Attorney-Marechal, Biebel, French & Eng
[1 3,655,530 [45] Apr. 11,1972
[57] ABSTRACT A method and apparatus for fabricating an aperture of predetermined cross-sectional area in an orifice plate for use in a non-contact printer, includes the steps of fabricating in the orifice plate an aperture of cross-sectional area no less than the predetermined cross-sectional area, flowing an electrolytic deposition solution under pressure through the aperture, applying a constant frequency stimulating disturbance to the stream of electrolytic deposition solution emerging from the aperture, placing an electrically conductive surface in the path of the stream and at a distance from the orifice plate equal to the unbroken filament length of said stream through an aperture of the predetermined cross-sectional area, causing the deposition solution to deposit on the walls of the aperture by connecting the orifice plate and the electrically conductive surface to opposite sides of a source of electric potential whereby the unbroken filament comprises part of the closed electro-deposition circuit, and continuing to supply the electrolytic deposition solution to the aperture until the aperture attains the predetermined cross-sectional area thereby producing filament breakup ahead of the electrically conductive surface and automatically opening the electro-deposition circuit.
6 Claims, 4 Drawing Figures PATENTEDAPR 1 1 I972 unnu Ill lNl/E/VT'OR RICHARD a TAYLOR A TTOR/VEYS .OEDROP GENERATORS, Ser. I968 and-now U.S. Pat. No. 3,560,641 and assigned to the as- I that the filament length of the stream length. Such variations in length of the filament gives rise to :loss of resolution in printing.
"parent from the following description,
FABRICATION OF ORIFICES This application is related to copending application IMAGE CONSTRUCTION SYSTEM USING MULTIPLE ARRAYS No. 768,790, filed Oct. 18,
signee of the present invention.
. BACKGROUND OF THE INVENTION In making apertures in orifice plates for use in high speed non-contacting printers, as hereinafter described, it has been found that such apertures or holes must be uniform in size so of liquid does not vary in Asmore fully described in said copending application Ser.
"No. 768,790, liquid under pressure is forced through apertures in an orifice plate. The drop generating system is stimulated at a selected frequency to induce formation of equally sized drops at the end of the liquid filaments issuing from the "apertures. The drops are then selectively charged by charging rings, and pass through a deflection field, to be directed either into a catcher for removal from the system, or to deposit in predetermined locations on a moving web.
To facilitate high speed printing,an array of orifice plates is employed with a. corresponding increase in the number of apertures. The presence of a great number of apertures requires that they be of sufficient uniformity in size to minimize loss inthe resolution and clarity of the printed material.
SUMMARY OF THE INVENTION The present invention employs a method and apparatus to produce uniform apertures for use in a non-contact printing system.An orifice plate is provided with pre-formed apertures or holes, the diameter of the holes being at least the size of the predetermined diameter desired. Liquid is supplied to the orifice plate under pressure. The liquid supplied is an electrolytic solution containing, for example, nickel ions, and is flowed through each aperture or hole in. the orifice plate. Suitable bar. A potential difference is broken filament reaches the contact bar. As a result, metal from the electrolyte liquid is caused to deposit or plate on the wall of the'apertures.
An unbroken filament of liquid issues from the apertures,
"but has the tendency of subsequently breaking into drops. The length of this filament is dependent primarily upon fluid pressure, fluid viscosity, stimulation frequency and the diameter or cross-section of the apertures. As the deposition builds up on the inside of the apertureand decreases the diameter of the aperture, the filament length will shorten, eventually not reaching and impinging on the contact bar. As a result, the
electric circuit is opened, and deposition inside the apertures .ceases. Therefore, by varying the distance of the contact bar from. the orifice plate, the diameter of the apertures can be controlled.
The primary object of this invention is, therefore, to provide such.a method of forming small apertures to predetermined size, and to provide apparatus for this method.
- Other objectsand advantages of the invention will be apthe accompanying .drawings and the appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded view of the uniform aperture forming device;
'FIG. 2 is a diagrammatic fragmentary view of the device;
FIG. 3 depicts an assembled drop generator unit; and
FIG. 4 is an enlarged view of a single aperture.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a fluid reservoir 10 has a fluid supply line 11 and a stimulator 12 attached thereto. The orifice plate 15 has apertures or holes 17 predrilled or otherwise formed to a diameter not less than the predetermined desired diameter. A contact bar 20 is positioned below orifice plate 15. In order that the apertures 17 will attain uniform cross-sectional areas, bar 20 is positioned directly below orifice plate 15 and parallel therewith. Bar 20 and orifice plate 15 are each connected to opposite sides of a DC. potential difference source 22. In the usual case the ions in the electrolytic solution will carry a positive electrical charge, so potential source 22 will ordinarily be connected on the positive side to contact bar 20 and on the negative side to orifice plate 15. This relation will cause the contact plate to act as the anode in the circuit.
To obtain apertures of uniform cross-sectional area, the plate 15 is fitted to the reservoir, and an electrolytic solution is caused to flow into reservoir 10 through fluid supply line 11, as indicated in FIG. 2. Stimulator 12 induces drops 25 to form at the end of liquid filaments 30 at a frequency equal to the oscillation frequency of stimulator 12. When a filament impinges on bar 20, the electric circuit is complete, and metal from the electrolytic solution is caused to deposit or plate on the inside walls of apertures 17, as seen in FIG. 4. As the crosssectional area of each aperture 17 decreases in size, the length of the corresponding filament 30 decreases until the point of drop formation is above the bar 20. Since only drops are now reaching bar 20, the circuit is broken as to the corresponding filament, and electrolytic deposition in the aperture ceases. Thus, by controlling the stimulation frequency and the distance X between orifice plate 15 and bar 20, uniformly sized apertures 17 may be obtained. Each one is controlled in size independently of the others.
In contrast to usual electroplating procedures the coating ions of this invention are supplied from a continually flowing fluid rather than from the anode of electrodeposition circuit. This means that the anode may be any conductive material such as graphite. However, the contact plate should not be made of a material which will be coated by the ions from the fluid since deposition of the ions on the contact plate will decrease the anode-orifice distance. Even the plating liquid itself may serve as an anode if it is pooled below the orifice plate and held at a constant level. Conversely it is desirable that the anode not function as a donor of coating material because the accompanying etching of the anode surface would increase the anode-orifice distance.
FIG. 3 depicts a drop generator employing an aperture 17 fabricated by the above method and apparatus. Liquid, such as ink, is pumped into chamber 31 in a top bar 32 and passes to the aperture 17 formed in orifice plate 15, now fastened beneath this chamber. The resulting liquid filaments 34 break into drops, and a stimulating means in the form of vibrator 35 causes the drops to form at a frequency which is common to all filaments, resulting in drops of essentially equal size and spacing.
Beneath the orifice plate is gasket 36, and a charging assembly in the form of plate 37 having openings in which charging electrode rings 38 are carried. Suitable electrical insulation (not shown) is provided between rings 38, such as by an insulating coating on plate 37.
A spacer plate 42, of electrically insulating material, is fastened below the charging assembly. Below the spacer plate is grounded guard electrode plate 44 on top of an electrostatic deflection assembly, comprising insulating support bars 45 mounting deflection electrodes 47 across which a substantial potential difference is applied. Uncharged drops follow a straight trajectory and deposit on moving web 50, which preferably is moved at constant velocity correlated to the drop generating frequency so that a continuous line of drops will cause an essentially continuous mark or trace along the web. Charged drops will follow a curved trajectory due to the deflecting field, and these drops are removed from the system through a catcher assembly 55.
Although the present invention has been described with reference to fabricating uniform apertures for use in a noncontacting printing system, it is to be understood that the present invention may be employed for any other purpose where apertures of uniform size are desired, e.g., in fabricating nozzles for a fuel injection apparatus.
While the method herein described, and the form of apparatus for carrying this method into effect, constitute preferred embodiments of the invention, it is to be understood that the invention is not limited to this precise method and form of apparatus, and that changes may be made in either without departing from the scope of the invention.
What is claimed is:
1. The method of fabricating an aperture of predetermined cross-sectional area in an orifice plate comprising the steps of:
a. forming in the orifice plate an aperture of cross-sectional area greater than said predetermined cross-sectional area,
b. flowing an electrolytic deposition solution under pressure through the aperture,
c. applying a constant frequency stimulating disturbance to the stream of electrolytic deposition solution emerging from the aperture,
d. placing an electrically conductive surface in the path of said stream and at a distance from the orifice plate corresponding to the maximum unbroken filament length for an aperture having said predetermined cross-sectional area,
e. causing the deposition solution to deposit on the aperture by connecting the orifice plate and said electrically conductive surface to opposite sides of a source of DC. electric potential whereby the unbroken filament comprises part of the electrodeposition circuit, and
f. continuing to supply electrolytic deposition solution through the aperture until the aperture attains said predetermined cross-sectional area and thereby causes filament breakupahead of the electrically conductive surface and interrupts the electrodeposition circuit.
2. The method defined in claim 1 wherein said orifice plate contains a plurality of apertures and said conductive surface is equally spaced from said apertures.
3. Apparatus for fabrication of an aperture of predetermined cross-sectional area in an orifice plate comprising a. an orifice plate having at least one aperture of cross-sectional area greater than said predetermined cross-sectional area,
b. means for flowing an electrolytic deposition solution under pressure through the aperture,
c. means producing stimulation of a predetermined constant frequency to the filament of deposition solution issuing from the aperture,
d. an electrically conductive surface mounted in spaced relation to said orifice plate such that said surface intercepts the path of said stream and at a distance from said orifice plate equal to the maximum unbroken filament length of said stream for an aperture having said predetermined cross-sectional area, and
e. means connecting said orifice plate and said electrically conductive surface to opposite sides of a source of DC. electric potential whereby the unbroken filament comprises part of an electrodeposition circuit causing the deposition solution to deposit on the aperture walls until the aperture attains its predetermined cross-sectional area thereby producing filament breakup ahead of the electrically conductive surface and automatically opening the electrodeposition circuit.
4. The apparatus defined in claim 3 wherein the orifice plate contains a plurality of apertures and said conductive surface is mounted parallel to said orifice plate to insure opening of the electrodeposition circuits at the same time as filament length breakup and thereby to produce all of the apertures of the same size.
5. The apparatus defined in claim 3 wherein the source of DC. electric potential is connected on its positive side to said electrically conductive surface and on its negative side to said orifice plate.
6. The method of producing a plurality of equal liquid filaments of the same size and forming equally sized drops from each filament, comprising the steps of:
a. forming in an orifice plate a plurality of apertures of cross-sectional area greater than said predetermined cross-sectional area,
b. flowing an electrolytic deposition solution under pressure through the apertures,
c. applying a constant frequency stimulating disturbance to all of the streams of electrolytic deposition solution emerging from the apertures,
d. placing an electrically conductive surface in the path of said solution streams and at a distance from the orifice plate corresponding to the maximum unbroken filament length for an aperture having said predetermined crosssectional area,
e. causing the deposition solution to deposit in the apertures by connecting the orifice plate and said electrically conductive surface to opposite sides of a source of DC. electric potential whereby the unbroken solution filaments comprise part of the electrodeposition circuit,
f. continuing to supply electrolytic deposition solution through the apertures until each aperture attains said predetermined cross-sectional area and thereby causes the associated solution filament to break up ahead of the electrically conductive surface and interrupt the electrodeposition circuit,
g. incorporating the orifice plate in a drop generator including a chamber for supply of liquid from a common source to all of the apertures,
h. supplying liquid under a predetermined constant pressure to the chamber to create a filament of liquid from each orifice, and
i. stimulating all of the liquid filaments at a common constant frequency to create equal drops off each filament.

Claims (5)

  1. 2. The method defined in claim 1 wherein said orificE plate contains a plurality of apertures and said conductive surface is equally spaced from said apertures.
  2. 3. Apparatus for fabrication of an aperture of predetermined cross-sectional area in an orifice plate comprising a. an orifice plate having at least one aperture of cross-sectional area greater than said predetermined cross-sectional area, b. means for flowing an electrolytic deposition solution under pressure through the aperture, c. means producing stimulation of a predetermined constant frequency to the filament of deposition solution issuing from the aperture, d. an electrically conductive surface mounted in spaced relation to said orifice plate such that said surface intercepts the path of said stream and at a distance from said orifice plate equal to the maximum unbroken filament length of said stream for an aperture having said predetermined cross-sectional area, and e. means connecting said orifice plate and said electrically conductive surface to opposite sides of a source of D.C. electric potential whereby the unbroken filament comprises part of an electrodeposition circuit causing the deposition solution to deposit on the aperture walls until the aperture attains its predetermined cross-sectional area thereby producing filament breakup ahead of the electrically conductive surface and automatically opening the electrodeposition circuit.
  3. 4. The apparatus defined in claim 3 wherein the orifice plate contains a plurality of apertures and said conductive surface is mounted parallel to said orifice plate to insure opening of the electrodeposition circuits at the same time as filament length breakup and thereby to produce all of the apertures of the same size.
  4. 5. The apparatus defined in claim 3 wherein the source of D.C. electric potential is connected on its positive side to said electrically conductive surface and on its negative side to said orifice plate.
  5. 6. The method of producing a plurality of equal liquid filaments of the same size and forming equally sized drops from each filament, comprising the steps of: a. forming in an orifice plate a plurality of apertures of cross-sectional area greater than said predetermined cross-sectional area, b. flowing an electrolytic deposition solution under pressure through the apertures, c. applying a constant frequency stimulating disturbance to all of the streams of electrolytic deposition solution emerging from the apertures, d. placing an electrically conductive surface in the path of said solution streams and at a distance from the orifice plate corresponding to the maximum unbroken filament length for an aperture having said predetermined cross-sectional area, e. causing the deposition solution to deposit in the apertures by connecting the orifice plate and said electrically conductive surface to opposite sides of a source of D.C. electric potential whereby the unbroken solution filaments comprise part of the electrodeposition circuit, f. continuing to supply electrolytic deposition solution through the apertures until each aperture attains said predetermined cross-sectional area and thereby causes the associated solution filament to break up ahead of the electrically conductive surface and interrupt the electrodeposition circuit, g. incorporating the orifice plate in a drop generator including a chamber for supply of liquid from a common source to all of the apertures, h. supplying liquid under a predetermined constant pressure to the chamber to create a filament of liquid from each orifice, and i. stimulating all of the liquid filaments at a common constant frequency to create equal drops off each filament.
US46395A 1970-06-15 1970-06-15 Fabrication of orifices Expired - Lifetime US3655530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4639570A 1970-06-15 1970-06-15

Publications (1)

Publication Number Publication Date
US3655530A true US3655530A (en) 1972-04-11

Family

ID=21943222

Family Applications (1)

Application Number Title Priority Date Filing Date
US46395A Expired - Lifetime US3655530A (en) 1970-06-15 1970-06-15 Fabrication of orifices

Country Status (2)

Country Link
US (1) US3655530A (en)
CA (1) CA935780A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921916A (en) * 1974-12-31 1975-11-25 Ibm Nozzles formed in monocrystalline silicon
DE2554085A1 (en) * 1974-12-31 1976-07-15 Ibm SPRAY HEAD FOR AN INKJET PRINTER WITH MULTIPLE NOZZLES
US4389654A (en) * 1981-10-01 1983-06-21 Xerox Corporation Ink jet droplet generator fabrication method
US4707705A (en) * 1978-10-26 1987-11-17 Canon Kabushiki Kaisha Ink jet recording device
US5389270A (en) * 1993-05-17 1995-02-14 Electrochemicals, Inc. Composition and process for preparing a non-conductive substrate for electroplating
US5476580A (en) * 1993-05-17 1995-12-19 Electrochemicals Inc. Processes for preparing a non-conductive substrate for electroplating
US5690805A (en) * 1993-05-17 1997-11-25 Electrochemicals Inc. Direct metallization process
US5725807A (en) * 1993-05-17 1998-03-10 Electrochemicals Inc. Carbon containing composition for electroplating
US6171468B1 (en) 1993-05-17 2001-01-09 Electrochemicals Inc. Direct metallization process
US6303181B1 (en) 1993-05-17 2001-10-16 Electrochemicals Inc. Direct metallization process employing a cationic conditioner and a binder
US6364247B1 (en) 2000-01-31 2002-04-02 David T. Polkinghorne Pneumatic flotation device for continuous web processing and method of making the pneumatic flotation device
US6557786B1 (en) * 1999-10-16 2003-05-06 Robert Bosch Gmbh Method for producing a high pressure fuel accumulator
US6710259B2 (en) 1993-05-17 2004-03-23 Electrochemicals, Inc. Printed wiring boards and methods for making them
US20060073348A1 (en) * 2004-10-06 2006-04-06 General Electric Company Electroplated fuel nozzle/swirler wear coat
US20060209123A1 (en) * 2005-03-16 2006-09-21 Eastman Kodak Company High density reinforced orifice plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1335442C (en) * 1988-02-29 1995-05-02 Robert N. O'brien Spacer for an electrochemical apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1416929A (en) * 1921-11-07 1922-05-23 William E Bailey Art of electrolysis
US3409524A (en) * 1966-03-23 1968-11-05 Gen Electric Electrolytic method for deburring annular shoulders defining machined holes
US3480530A (en) * 1966-11-15 1969-11-25 Gen Motors Corp Method for producing porous metal parts having uniform fluid permeability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1416929A (en) * 1921-11-07 1922-05-23 William E Bailey Art of electrolysis
US3409524A (en) * 1966-03-23 1968-11-05 Gen Electric Electrolytic method for deburring annular shoulders defining machined holes
US3480530A (en) * 1966-11-15 1969-11-25 Gen Motors Corp Method for producing porous metal parts having uniform fluid permeability

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921916A (en) * 1974-12-31 1975-11-25 Ibm Nozzles formed in monocrystalline silicon
DE2554085A1 (en) * 1974-12-31 1976-07-15 Ibm SPRAY HEAD FOR AN INKJET PRINTER WITH MULTIPLE NOZZLES
US4707705A (en) * 1978-10-26 1987-11-17 Canon Kabushiki Kaisha Ink jet recording device
US4389654A (en) * 1981-10-01 1983-06-21 Xerox Corporation Ink jet droplet generator fabrication method
US6171468B1 (en) 1993-05-17 2001-01-09 Electrochemicals Inc. Direct metallization process
US5476580A (en) * 1993-05-17 1995-12-19 Electrochemicals Inc. Processes for preparing a non-conductive substrate for electroplating
US5690805A (en) * 1993-05-17 1997-11-25 Electrochemicals Inc. Direct metallization process
US5725807A (en) * 1993-05-17 1998-03-10 Electrochemicals Inc. Carbon containing composition for electroplating
US5389270A (en) * 1993-05-17 1995-02-14 Electrochemicals, Inc. Composition and process for preparing a non-conductive substrate for electroplating
US6303181B1 (en) 1993-05-17 2001-10-16 Electrochemicals Inc. Direct metallization process employing a cationic conditioner and a binder
US6710259B2 (en) 1993-05-17 2004-03-23 Electrochemicals, Inc. Printed wiring boards and methods for making them
US20040084321A1 (en) * 1993-05-17 2004-05-06 Thorn Charles Edwin Printed wiring boards and methods for making them
US7186923B2 (en) 1993-05-17 2007-03-06 Electrochemicals, Inc. Printed wiring boards and methods for making them
US6557786B1 (en) * 1999-10-16 2003-05-06 Robert Bosch Gmbh Method for producing a high pressure fuel accumulator
US6364247B1 (en) 2000-01-31 2002-04-02 David T. Polkinghorne Pneumatic flotation device for continuous web processing and method of making the pneumatic flotation device
US20060073348A1 (en) * 2004-10-06 2006-04-06 General Electric Company Electroplated fuel nozzle/swirler wear coat
US20060209123A1 (en) * 2005-03-16 2006-09-21 Eastman Kodak Company High density reinforced orifice plate

Also Published As

Publication number Publication date
CA935780A (en) 1973-10-23

Similar Documents

Publication Publication Date Title
US3655530A (en) Fabrication of orifices
US3656171A (en) Apparatus and method for sorting particles and jet prop recording
US3586907A (en) Laminated coating head
US4490729A (en) Ink jet printer
US4636808A (en) Continuous ink jet printer
DE2943164C2 (en)
US3673601A (en) Liquid jet recorder
EP0019385B1 (en) A planar-faced charge electrode structure for ink jet printers and method of fabricating such a structure
US4158847A (en) Piezoelectric operated printer head for ink-operated mosaic printer units
US3714928A (en) Multiple jet channel
US3893623A (en) Fluid jet deflection by modulation and coanda selection
US4250510A (en) Fluid jet device
US3882508A (en) Stimulation apparatus for a jet drop recorder
DE2460913A1 (en) METHOD AND DEVICE FOR GENERATING A SEQUENCE OF EQUAL SIZE AND EQUALLY SPACED LIQUID DROPS
GB1347097A (en) Liquid jet recorder
DE2554499A1 (en) METHOD OF GENERATING FAULTS IN A JET OF INK
DE2361781A1 (en) WRITING WORK FOR WRITING WITH LIQUID INK
US3604980A (en) Drop-charging apparatus
US3955203A (en) High voltage deflection electrode apparatus for ink jet
US4928113A (en) Constructions and fabrication methods for drop charge/deflection in continuous ink jet printer
US3461045A (en) Method of plating through holes
US4268836A (en) Ink jet printer having improved catcher
JP3113077B2 (en) How to electroform a straight orifice plate
US4326204A (en) Density control system for jet drop applicator
EP0015733A1 (en) Improvements in or relating to ink jet printers

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