US3296963A - Electrostatic screen printing of articles made of highly insulating materials - Google Patents

Electrostatic screen printing of articles made of highly insulating materials Download PDF

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Publication number
US3296963A
US3296963A US385431A US38543164A US3296963A US 3296963 A US3296963 A US 3296963A US 385431 A US385431 A US 385431A US 38543164 A US38543164 A US 38543164A US 3296963 A US3296963 A US 3296963A
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United States
Prior art keywords
article
screen
toner
stencil
charged
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
US385431A
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English (en)
Inventor
Kenneth W Rarey
Jr John B Kennedy
James G Buck
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.)
Continental Can Co Inc
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Continental Can Co Inc
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 Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to US385431A priority Critical patent/US3296963A/en
Priority to DE19651546738 priority patent/DE1546738A1/de
Priority to SE9406/65A priority patent/SE303768B/xx
Priority to CH1007665A priority patent/CH429450A/fr
Priority to GB30920/65A priority patent/GB1119793A/en
Priority to BE667443D priority patent/BE667443A/xx
Priority to DK383565AA priority patent/DK112799B/da
Priority to NL6509681A priority patent/NL6509681A/xx
Priority to JP40045534A priority patent/JPS4927524B1/ja
Application granted granted Critical
Publication of US3296963A publication Critical patent/US3296963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0872—Machines for printing on articles having essentially cylindrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/12—Stencil printing; Silk-screen printing
    • B41M1/125—Stencil printing; Silk-screen printing using a field of force, e.g. an electrostatic field, or an electric current
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Definitions

  • This invention relates to improved methods of electrostatic screen printing and more particularly to electrostatic screen printing of articles made of highly insulating materials.
  • a direct current high voltage power supply is connected between a stencil-supporting electrically conductive screen and a co-extensive conductive sheet, which are arranged essentially parallel to each other, to establish and maintain an electric field between the screen and the sheet.
  • a finely divided, low melting temperature, pigmented or dyed, electrically insulating, solid material known as toner is then applied to the exposed side of the screen, generally from a roller of a type similar to that used for painting.
  • the toner becomes electrically charged while passing through unblocked apertures in the screen.
  • the toner experiences a force, due to the electric field between the screen and sheet, which accelerates the toner until it is intercepted by the surface being printed.
  • the object When a sufficient amount of toner has been deposited in this manner, the object may be removed from its location near the screen. The electrical charge on the toner tends to bind it to the surface on which it is deposited. Heating or exposure to vapor of a solvent for the toner may then permanently bond the toner to the surface.
  • the electrical functions that are accomplished by the power supply, screen and sheet, are of particular interest.
  • the screen and sheet when arranged for printing, essentially constitute a parallel plate capacitor.
  • the capacitor becomes charged.
  • the toner is pushed through the unblocked screen apertures by the roller, some of the charge on the screen flows onto the toner particles, and, as they are carried to the surface being printed, additional charge flows onto the screen.
  • the power supply provides the electrical charge for the toner.
  • the electric field accelerates the charged toner across the separation between the screen and the object to be printed upon. As the charged toner accumulates on the surface being printed, an electrical repulsion is established which tends to prevent additional deposition.
  • the object is suificiently conductive, it may be connected to the conductive sheet and accumulation of an electrical charge will be avoided. In this event, electrical conduction between the power supply and object permits formation of a surface charging on the object, in the vicinity of, and of opposite polarity to the charge of the toner. This charging tends to neutralize the field of the toner. Thus, the power supply is providing charge to the object being printed. If the object is not sufficiently conductive to permit this type of operation, the best one can do is to establish such an intense field between the screen and conductive sheet that it is always large compared to that associated with a printed image. Although this can result in the printing of a good image, the image may not be stable when removed from the electric field. Frequently such images will be so unstable that considerable amounts of toner will be ejected from the surface of the printed objects before the images can be fused.
  • a narrow necked plastic bottle having a shape which is not restricted to cones or cylinders is an example of such an object.
  • most plastic bottles fall into this category, especially if one includes consideration of all portions of the bottle.
  • a narrow neck and complex shape prohibits locating an electrode in close proximity to the inner surface.
  • the complex shape may mean that a simple rod electrode located in the center of the bottle cannot provide an electric field of appropriate direction and magnitude at all points to avoid distorting the pattern.
  • An electrode located outside of the bottle, on the side opposite that of the screen may exhibit similar deficiencies, and additionally, restrict the amount of area that can be printed at one time, thus reducing printing speed.
  • electrostatic screen printing is accomplished in a manner which is free of the deficiencies inherent in the previously known methods.
  • a bulky object made of an insulating material such as, but not limited to, a sheet of plastic or a plastic bottle, with thin walls
  • the two corona discharges deposit, on the opposite surfaces, ions of the opposite electrical polarity.
  • These two surface charges being located closely together and being of opposite polarity, tend to neutralize the electric fields of each other in the space near the objects.
  • an electrically conductive stencil-bearing screen is brought sufiiciently near the external surface of the object, an enhancement of the electric field in the space between the two occurs. This is because the field, due to the static charging of the article, induces charging on the conductive screen which tends to produce field intensification. if the screen is electrically grounded, this effect may be further enhanced.
  • a further object of this invention is to provide a method, of the type described above, including the further steps of placing an electrode adjacent to the side of the article remote from the conductive screen, connecting the electrode to the conductive screen, and electrically grounding the conductive screen to enhance the field intensity of the electric field between the conductive screen and the charged article.
  • Another object of this invention is to provide a new and novel method of coating an exterior surface of a hollow article of non-conductive material which comprises the steps of creating in spaced relation from and substantially within the boundaries ofthe interior surface of the hollow article, a localized zone of corona discharge of predetermined polarity to coat the interior surfaces with ions of a polarity determined by said predetermined polarity, creating in spaced relation from the exterior surface of the article a second zone of corona discharge of opposite polarity from that ofthe corona discharge within the boundaries of the interior surface of the hollow article, disposing the charged hollow article in spaced relation relative to an electrically conductive screen stencil to establish an electric field between the hollow article and the screen stencil, and forcing toner particles through apertures in the screen stencil.
  • Another object of this invention is to provide apparatus for printing on an article of highly insulating material having opposite surfaces thereof charged with ions of opposite polarity, the apparatus compr'isingan electrode to be disposed in spaced relation adjacent to one surface of the article, an electrically conductive stencil screen to be disposed in spaced relation adjacent to the other surface of the article, means connectingthe electrode to the stencil screen, and means for forcing toner particles through apertures in thestencil screen.
  • a further objectof this invention is to provide apparatus, of the type set forth above, wherein the means for forcing toner particles through apertures in the stencil screen comprises a magnetic brush for brushing toner particles into and through the apertures in the stencil screen.
  • a still further object of this invention is to provide apparatus, of the type set forth above, wherein the magnetic brush comprises a bar magnet and a plurality of ferromagnetic particles adhering thereto, the ferromag-- netic particles having smaller size toner particles triboelectrically adhering thereto.
  • FIGURE 1 is a diagrammatical view of one form of the present invention wherein a sheet of insulating material is illustrated as being exposed to two simultaneous corona discharges of opposite polarity.
  • FIGURE 2 diagrammatically illustrates a printing operation in accordance with the present invention.
  • FIGURE 3 is a diagrammatical view, similar to FIG- URE 1, andillustrates a hollow article of insulating material being exposed to two simultaneous corona .discharges, one discharge occurring within the confines of the hollow article and the other discharge occurring exteriorly thereof.
  • FIGURE 4 is a fragmentary perspective view of a plas- ,tic necked-bottle, with portions broken away for clarity,
  • plastic bottle ashaving a coating of negative ions on the interior surface thereof, and a coating of positive ions on the exterior surface thereof.
  • FIGURE 5 is a diagrammatical view of one arrangement for printing upon a hollow article in accordance with the present invention.
  • FIGURE 6 illustrates a modified arrangement for printing upon articles in accordance with the present invention.
  • FIGURES 1 and 2 One form of a practice of the present invention is illustrated in FIGURES 1 and 2.
  • the corona electrode 11 is electrically grounded by a conductor 13, and the corona electrode 12 is connected to a Van der Graaf generator, generally indicated by the numeral 14.
  • the corona electrodes 11 and 12 were common sewing pins which were located about 2 or 3 inches apart with the points directed toward each other.
  • the generator 14 was operated at around 100 kilovolts or more, and the flat article was passed back and forth between the electrodes 11 and 12 so that ions formed in corona discharges near the points were deposited on the article 10 in a fairly uniform manner. Positive ions came from the discharge caused by the grounded electrode 11 and negative ions were associated with the electrode 12 connected to the generator 14. The minus signs 15 indicate that negative ions are deposited on one side of the article It), and the plus signs 16 indicate a coating of positive ions on the opposite side of the article 10.
  • the article 10 After the article 10 has been charged by the apparatus shown in FIGURE 1, the article 10 is located in spaced relation to an electrically conductive stencil screen 20 such that an electric field is established between the charged article 10 and the stencil screen 20.
  • the stencil screen 20 is illustrated as being a conventional type screen, which is commonly used in silk-screen printing, and includes a suitable discontinuous coating 21 which has openings 22 therethrough to define a predetermined pattern.
  • the stencil screen 20 is, preferably, electrically grounded as at 25.
  • an enhancement of the electric field occurs in the space between the stencil screen 20 and the charged article 10. This is because the field due to the static charging of the article 10 induces charges 23 on the conductive stencil screen 20 which thus produces field intensification. It is preferable that the stencil screen 20 be electrically grounded because such arrangement will further intensify the electric field.
  • the ink which is used in the presently described printing process is, preferably, a toner of non-conductive particles which are of commercially available types manufactured by Xerox Corporation.
  • the toner consists essentially of pigmented or dyed particles of a mixture of nbutyl methacrylate (41%) and polystyrene (59%), with an average particle size of about 17 microns.
  • the carrier is comprised of conductive particles which, preferably, consist of iron filings or other magnetic material, but which may be of various materials such as steel, aluminum or copper. Carrier particles have a size which ranges from around to 1000 microns for these various materials.
  • the mixture of toner and carrier particles is generally known as developer.
  • any additional toner simply tends to agglomerate and may exhibit net charging of either polarity. Even if a proper amount of toner is used in such a mixture, care must be taken in mixing to insure a homogeneous distribution. When correct quantities of toner and carrier are properly mixed, the toner essentially all exhibits net charging of a single polarity, and of sufiicient magnitude to be useful in an electrostatic printing process.
  • a desirable feature of such a mixture is that the toner is well contained and does not present a dusting problem generally otherwise associated wit-h such powders.
  • the carrier is made of a ferromagnetic material, and such material is preferred, magnetic fields can be used advantageously in handling the developer. As is shown in FIGURE 2, a magnetic brush, generally indicated by the.
  • numeral 30 comprises a simple bar magnet 31, one end of which has been previously dipped into a carrier-toner mixture. Upon withdrawal therefrom, long filaments 32 of carrier particles coated with toner extend from the magnet 31 somewhat as the bristles on a paint brush.
  • the magnetic brush 30 is used to push toner through the screen apertures 22 which are not blocked by the stencil coating 21.
  • the mesh of the stencil screen 20 is such as to permit passage of small toner particles but prevent passage of the larger carrier particles.
  • the magnetic brush 30 is reciprocated, as indicated by the arrows in FIGURE 2 such that toner particles 34, having a negative charge thereon, are passed through the stencil screen 20 and are moved toward the charged article by the electric field between the stencil screen and the charged object 10. The brushing operation is continued until a sufficient amount of toner has been accumulated on the article 10.
  • the article 10 is now removed from its location near the screen, and is either heated or exposed to vapor of an appropriate solvent until the printed pattern is adhered to the article.
  • the charging of the article 10, of course, maintains the pattern on the object until it is permanently adhered.
  • the invention is not limited to printing upon fiat sheets, such as the article 10, and, in fact, is particularly adapted for printing upon a bulky article made of an insulating material, such as the thin-walled plastic bottle 40 which is shown in FIGURE 3.
  • the article 40 is charged in the same manner as the article 10.
  • Corona electrodes 11 and 12 are connectedto a Van der Graaf generator 14 operating at around 100 kilovolts or more. It is preferred, but not restricted thereto, that the interior surface 41, of the article 40, be coated with ions of negative polarity, from the corona electrode 11, and the exterior surface 42 be coated with positive ions from the corona electrode 12.
  • the electrical resistivity of the article 40 must be sufficiently high to maintain a high level of charging throughout the subsequent printing operation.
  • an electrically conductive stencil screen 45 is positioned near the article 40 in an appropriate location for stenciling.
  • the stencil screen 45 is electrically grounded, as at 46, and will charge under the action of the electric field from the precharged hollow article 40 which is to be printed upon. This char-ging of the stencil screen 45 may then serve to charge the toner as it passes through the apertures in the screen stencil 45.
  • the electric field between the screen stencil 45 vand article 40 serves to carry toner from the stencil screen to the article. It is preferred, but not necessary, to place an electrode 47 inside the hollow article 40 and connect the electrode 47 to the electrically grounded stencil screen 45. Such a connection serves to enhance the screenarticle field intensity.
  • a conventional paint roller Stl may be used for introducing toner 34 through apertures in the stencil screen 45.
  • the charged toner 34 is then electrically accelerated to the article 40, by the electric field between the article and stencil screen 45, to produce a printed pattern 51 upon the article 40.
  • the magnetic brush 30, as is shown in FIGURE 2 may be substituted for the roller 50 and, as previously pointed out, the use of a magnetic brush is preferred.
  • the pattern 51 consists of a sufficient amount of toner 34
  • the article 40 is removed from its location near the screen and is either heated or exposed to vapor of an appropriate solvent until the printed pattern 51 is adhered to the article 40.
  • a method of electrostatic screen printing upon an article of highly insulating material comprising the steps of charging one side of the article to be printed with positive ions and the other side of the article with negative ions to provide said article with a distributed electrostatic charge having a net charge of approximately zero, placing the charged article in proximate spaced relation to an electrically conductive screen while maintaining said distributed electrostatic charge to induce electrical charges on said conductive screen and to establish an electric field between the charged article and the conductive screen, forcing toner particles through apertures in the conductive screen causing said toner particles to be transported by said electric field from said screen to said charged article.
  • a method as defined in claim 1 including the step of prearrangin-g the apertures in the conductive screen to define a predetermined pattern.
  • a method as defined in claim 1 including the further step of fusing the toner particles to the charged article.
  • a method as defined in claim 1 including the further step of electrically grounding the conductive screen.
  • a method as defined in claim 1 including the further steps of placing an electrode adjacent to the side of the article remote from the conductive screen, connecting the electrode to the conductive screen, and electrically grounding the conductive screen to enhance the field intensity of the electric field between the conductive screen and the charged article.
  • a method as defined in claim 5 including the step of pre-arranging the apertures in the conductive screen to define a predetermined pattern.
  • a method of coating an exterior surface of a hollow article of non-conductive material which comprises the steps of creating in spawd relation from and substantially within the boundaries of the interior surface of said hollow article a localized zone of corona discharge of predetermined polarity to coat the interior surfaces with ions of a polarity determined by said predetermined polarity, creating in spaced relation from the exterior surface of the article a second zone of corona discharge of opposite polarity from that of the corona discharge within the boundaries of the interior surface of the hollow article to coat the exterior surfaces with ions, placing the charged hollow article in proximate spaced relation relative to an electrically conductive screen stencil to induce electrical charges on said screen stencil to establish an electric field between the exterior surface of the hollow article and the screen stencil, forcing toner particles through apertures in the screen stencil, and cansing toner particles to be transported by said electric field from said screen to said charged article.
  • a method as defined in claim 7 including the further step of fusing the toner particles to the charged article.
  • a method as defined in claim 7 including the further step of electrically grounding the conductive screen stencil.
  • a method as defined in claim 7 including the further steps of placing an electrode adjacent to the side of the article remote from the conductive screen, connecting the electrode to ground, and electrically grounding the conductive screen to enhance the field intensity of the electric field between the conductive screen and the charged article.
  • Apparatus for printing on an article of highly insulating material means for charging respective opposite surfaces of said material with charged ions of opposite polarity, an electrode adapted to be disposed in spaced relation adjacent to one surface of the article, an electrically conductive stencil screen adapted to be disposed in spaced relation adjacent to the other surface of the article, means for electrically grounding said electrode and said stencil screen, and means for introducing toner particles into apertures in said stencil screen.
  • Apparatus for printing on an article of highly insulating material means for charging opposite surfaces of said material with charged ions of opposite polarity, an electrode adapted to be disposed in spaced relation adjacent to one surface of the article, an electrically conductive stencil screen adapted to be disposed in spaced relation adjacent to the other surface of the article, means for electrically grounding said electrode and said stencil screen, and a magnetic brush for brushing toner particles into and through apertures in the stencil screen.
  • said magnetic brush comprises a bar magnet and a plurality of ferromagnetic particles adhering thereto, said ferromagnetic particles having smaller size toner particles triboelectrically adhering thereto.
  • Apparatus for printing on an article of highly insulating material having opposite first and second surfaces means for charging said first surface with ions of a first polarity and said second surface with ions of opposite polarity, an electrically conductive stencil screen means for being disposed in spaced relation to said article after said article is charged, whereby electrical charges will be induced on said conductive stencil screen means to establish an electric field between the charged article and said conductive stencil screen means, said stencil screen means having apertures therein, means for introducing toner particles into said apertures, where-by said toner particles are transported to said article by the electric field between said article and said stencil screen means, an electrode disposed on the side of said article opposite from said stencil screen means and in spaced relation to said article, and means for electrically grounding said electrode and said stencil screen means for enhancing the field intensity of the electric field therebetween.
  • Apparatus as defined in claim 14 wherein said article is a hollow container made of plastic material and having an opening therein, said electrode comprising a rod-like member inserta-ble within said hollow container through said opening,

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  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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US385431A 1964-07-27 1964-07-27 Electrostatic screen printing of articles made of highly insulating materials Expired - Lifetime US3296963A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US385431A US3296963A (en) 1964-07-27 1964-07-27 Electrostatic screen printing of articles made of highly insulating materials
DE19651546738 DE1546738A1 (de) 1964-07-27 1965-07-15 Elektrostatisches Verfahren zum Bedrucken von Artikeln aus hochisolierendem Material
SE9406/65A SE303768B (xx) 1964-07-27 1965-07-16
CH1007665A CH429450A (fr) 1964-07-27 1965-07-19 Procédé pour l'impression électrostatique et appareil pour la mise en oeuvre de ce procédé
GB30920/65A GB1119793A (en) 1964-07-27 1965-07-21 Improvements in printing
BE667443D BE667443A (xx) 1964-07-27 1965-07-26
DK383565AA DK112799B (da) 1964-07-27 1965-07-26 Elektrostatisk trykkemetode og apparat til udøvelse af denne.
NL6509681A NL6509681A (xx) 1964-07-27 1965-07-27
JP40045534A JPS4927524B1 (xx) 1964-07-27 1965-07-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US385431A US3296963A (en) 1964-07-27 1964-07-27 Electrostatic screen printing of articles made of highly insulating materials

Publications (1)

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US3296963A true US3296963A (en) 1967-01-10

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US385431A Expired - Lifetime US3296963A (en) 1964-07-27 1964-07-27 Electrostatic screen printing of articles made of highly insulating materials

Country Status (9)

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US (1) US3296963A (xx)
JP (1) JPS4927524B1 (xx)
BE (1) BE667443A (xx)
CH (1) CH429450A (xx)
DE (1) DE1546738A1 (xx)
DK (1) DK112799B (xx)
GB (1) GB1119793A (xx)
NL (1) NL6509681A (xx)
SE (1) SE303768B (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359890A (en) * 1966-01-05 1967-12-26 American Can Co Conductive backing for printing on hollow articles
US3364853A (en) * 1966-12-27 1968-01-23 Purex Corp Ltd Electrostatic printing with means to prevent free charge flow
US3413917A (en) * 1966-11-16 1968-12-03 Purex Corp Ltd Electrostatic printing with means to change polarity of counter electrode
US3487775A (en) * 1966-10-03 1970-01-06 Xerox Corp Imaging system
US3503331A (en) * 1968-08-23 1970-03-31 Purex Corp Ltd Controlled current flow electrostatic printing
US3508491A (en) * 1966-06-06 1970-04-28 Molins Organisation Ltd Printing apparatus for filled containers
US3521558A (en) * 1968-08-26 1970-07-21 Purex Corp Ltd Electrostatic printing with potential control
US3557691A (en) * 1968-06-25 1971-01-26 Owens Illinois Inc Electrostatic stencil printing process utilizing polyester-alkyd resin powder
US3561356A (en) * 1967-02-24 1971-02-09 Continental Can Co Precharging of substrate for electrostatic printing
US5989678A (en) * 1996-06-25 1999-11-23 Jacobson; Laurence Method of simultaneously printing a portion of a hook and loop fabric and attaching the fabric to another fabric and the fabric or garment resulting therefrom

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3702130A1 (de) * 1987-01-24 1988-08-04 Heinz Joachim Schinke Verfahren zur direkten bilderzeugung auf bedruckstoffen, insbesondere normalpapier
DE102006031304B8 (de) * 2006-07-06 2008-10-02 Schott Ag Verfahren zum Bedrucken eines Behälters
DE102009042595A1 (de) * 2009-09-24 2011-03-31 Braun, Peter Marco Verfahren zur Herstellung von Formteilen

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US2890968A (en) * 1955-06-02 1959-06-16 Rca Corp Electrostatic printing process and developer composition therefor
US2957077A (en) * 1955-06-15 1960-10-18 American Can Co Method and apparatus for producing coated thermoplastic containers
US2885556A (en) * 1955-08-01 1959-05-05 Haloid Xerox Inc Simultaneous charging device and method
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US2894139A (en) * 1956-07-10 1959-07-07 Injection Molding Company Apparatus for treating polyethylene containers for printing
US2966429A (en) * 1956-08-31 1960-12-27 Gen Electric Method of and apparatus for making printed circuits
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US3058444A (en) * 1959-03-13 1962-10-16 American Photocopy Equip Co Apparatus for developing electrostatic image on electrographic sheet
US3081698A (en) * 1960-03-04 1963-03-19 Electrostatic Printing Corp Electrostatic printing system
US3133484A (en) * 1961-09-29 1964-05-19 Rca Corp Electrostatic printing apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359890A (en) * 1966-01-05 1967-12-26 American Can Co Conductive backing for printing on hollow articles
US3508491A (en) * 1966-06-06 1970-04-28 Molins Organisation Ltd Printing apparatus for filled containers
US3487775A (en) * 1966-10-03 1970-01-06 Xerox Corp Imaging system
US3413917A (en) * 1966-11-16 1968-12-03 Purex Corp Ltd Electrostatic printing with means to change polarity of counter electrode
US3364853A (en) * 1966-12-27 1968-01-23 Purex Corp Ltd Electrostatic printing with means to prevent free charge flow
US3561356A (en) * 1967-02-24 1971-02-09 Continental Can Co Precharging of substrate for electrostatic printing
US3557691A (en) * 1968-06-25 1971-01-26 Owens Illinois Inc Electrostatic stencil printing process utilizing polyester-alkyd resin powder
US3503331A (en) * 1968-08-23 1970-03-31 Purex Corp Ltd Controlled current flow electrostatic printing
US3521558A (en) * 1968-08-26 1970-07-21 Purex Corp Ltd Electrostatic printing with potential control
US5989678A (en) * 1996-06-25 1999-11-23 Jacobson; Laurence Method of simultaneously printing a portion of a hook and loop fabric and attaching the fabric to another fabric and the fabric or garment resulting therefrom

Also Published As

Publication number Publication date
GB1119793A (en) 1968-07-10
NL6509681A (xx) 1966-01-28
SE303768B (xx) 1968-09-09
BE667443A (xx) 1966-01-26
DK112799B (da) 1969-01-20
CH429450A (fr) 1967-01-31
DE1546738A1 (de) 1970-10-15
JPS4927524B1 (xx) 1974-07-18

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