GB828983A - Pressure-rupturable microscopic fluid-containing capsules - Google Patents

Pressure-rupturable microscopic fluid-containing capsules

Info

Publication number
GB828983A
GB828983A GB39822/57A GB3982257A GB828983A GB 828983 A GB828983 A GB 828983A GB 39822/57 A GB39822/57 A GB 39822/57A GB 3982257 A GB3982257 A GB 3982257A GB 828983 A GB828983 A GB 828983A
Authority
GB
United Kingdom
Prior art keywords
magnetic
capsules
oil
suspension
mixture
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
Application number
GB39822/57A
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB828983A publication Critical patent/GB828983A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/10—Complex coacervation, i.e. interaction of oppositely charged particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G19/00—Processes using magnetic patterns; Apparatus therefor, i.e. magnetography
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/083—Magnetic toner particles
    • G03G9/0831—Chemical composition of the magnetic components
    • G03G9/0833—Oxides
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/083—Magnetic toner particles
    • G03G9/0839—Treatment of the magnetic components; Combination of the magnetic components with non-magnetic materials
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/093—Encapsulated toner particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Medicinal Preparation (AREA)
  • Hard Magnetic Materials (AREA)
  • Color Printing (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

Pressure-rupturable microscopic capsules containing a fluid in which is dispersed particles of magnetic material, e.g. black or red magnetic oxide, carbonyl iron, ferrous magnetic alloys, nickel and its magnetic alloys may be used in the form of a suspension for coating a sheet to make record material for printing by magnetic means. The magnetic materials may be permanently magnetized in the capsules or they may be magnetized by magnetic field applied to the capsules. They are suspended in an oily vehicle, e.g. chlorinated diphenyl or petroleum fractions of low boiling-point. As much as 50% by volume of the magnetic powder, as compared with the oil, may be included within the capsule. Methods of making the capsules and applying them to sheets of paper are described in Specifications 751,600 and 759,800, where formation of the colloidal surface of the drops round the metal-oil suspension by coacervation is described. A colouring material may be added to the oil to increase the coloration of the droplets. As described, 30 parts of magnetic iron oxide are suspended in 160 parts trichlordiphenyl containing 1 part oleic acid, 0.1 gs. zinc stearate and 1 part dioctyl-phthalate until the average agglomerate size of the oxide particles is about 3 microns. The suspension is emulsified first into a gelatine-water solution (isoelectric point of pH8) at a pH of 6.5, and then into a gum arabic-water solution also at pH 6.5. The mixture is diluted with water and its pH is adjusted to 4.7 to bring about coacervation with deposit of the colloid material round the oil droplets. A 37% solution of formaldehyde is added to the mixture and the temperature is lowered to produce gelling of the gelatine and then a 5% solution of a copolymer of polyvinyl methyl ether and maleic anhydride is added with stirring to prevent the capsules from agglomerating in the subsequent hardening step which is effected by adjusting the pH of the mixture with NaOH to 9-10 so that the formaldehyde reacts with the colloid to harden it. The dispersion thus obtained can be coated directly onto paper and dried or the water may be removed by spray drying and a fine powder obtained consisting of the discrete capsules containing the magnetic material floating in the included vehicle.
GB39822/57A 1957-01-30 1957-12-23 Pressure-rupturable microscopic fluid-containing capsules Expired GB828983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US637270A US2971916A (en) 1957-01-30 1957-01-30 Microscopic capsules containing magnetizable material

Publications (1)

Publication Number Publication Date
GB828983A true GB828983A (en) 1960-02-24

Family

ID=24555239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39822/57A Expired GB828983A (en) 1957-01-30 1957-12-23 Pressure-rupturable microscopic fluid-containing capsules

Country Status (5)

Country Link
US (1) US2971916A (en)
CH (1) CH375384A (en)
FR (1) FR1190499A (en)
GB (1) GB828983A (en)
NL (2) NL108169C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316119A (en) * 1960-09-29 1967-04-25 Litton Systems Inc Recording member for visibly recording radio frequency microwaves
EP0002119A1 (en) * 1977-11-10 1979-05-30 Moore Business Forms, Inc. Microcapsular electroscopic marking particles

Families Citing this family (83)

* Cited by examiner, † Cited by third party
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US3042616A (en) * 1958-08-26 1962-07-03 Ibm Process of preparing magnetic ink
US3092553A (en) * 1959-01-30 1963-06-04 Jr Carl E Fisher Pharmaceutical preparations and method and apparatus for making same
US3415758A (en) * 1960-03-09 1968-12-10 Ncr Co Process of forming minute capsules en masse
US3221315A (en) * 1962-06-25 1965-11-30 Ncr Co Magnetic recording medium utilizing microscopic capsules containing magnetic material
US3330693A (en) * 1962-10-29 1967-07-11 Pateco Method of making a magnetic record member with encapsulated ferromagnetic particles in a binder and resulting product
US3147991A (en) * 1962-11-13 1964-09-08 Sr Edward N Heinz Checkbook
US3249458A (en) * 1962-12-10 1966-05-03 Brunswick Corp Pressure responsive material
US3281669A (en) * 1963-04-02 1966-10-25 Lyne S Trimble Means and method for indicating and visibly permanently recording a magnetic field utilizing a magnetostrictive material and a chemical reaction
US3320523A (en) * 1965-02-01 1967-05-16 Lyne S Trimble Method for visibly indicating and recording magnetic fields
US3512169A (en) * 1965-10-20 1970-05-12 Lyne S Trimble Magnetochemical method and means for creating visible displays in color
US3415186A (en) * 1966-02-10 1968-12-10 Xerox Corp Duplicating system
US3451545A (en) * 1967-07-13 1969-06-24 Shell Oil Co Method for separating micro-organisms from earth samples
FR1561251A (en) * 1968-01-12 1969-03-28
US3683382A (en) * 1969-05-29 1972-08-08 Honeywell Inc Recording medium responsive to force fields and apparatus for recording and reproducing signals on the medium
US3927930A (en) * 1972-07-10 1975-12-23 Polaroid Corp Light polarization employing magnetically oriented ferrite suspensions
US3954666A (en) * 1974-07-11 1976-05-04 E. I. Du Pont De Nemours And Company Semipermeable microcapsules containing heterogeneous catalysts and ferromagnetic materials
US3954678A (en) * 1974-07-11 1976-05-04 E. I. Du Pont De Nemours And Company Semipermeable microcapsules containing a silica gel
JPS5913521B2 (en) * 1975-06-19 1984-03-30 メイトウサンギヨウ カブシキガイシヤ Method for producing magnetic iron oxide/dextran complex
DE2602176A1 (en) * 1976-01-21 1977-08-04 Omnitechnic Gmbh Microencapsulated hardeners and vulcanising agents - contg. basic metal cpds. treated with hydrophobising agent
US4099186A (en) * 1976-03-31 1978-07-04 E. I. Du Pont De Nemours And Company Magnetic printing process and apparatus
US4105572A (en) * 1976-03-31 1978-08-08 E. I. Du Pont De Nemours And Company Ferromagnetic toner containing water-soluble or water-solubilizable resin(s)
US4117498A (en) * 1976-03-31 1978-09-26 E. I. Du Pont De Nemours And Company Magnetic printing process and apparatus
US4169804A (en) * 1976-08-19 1979-10-02 Minnesota Mining And Manufacturing Company Magnetically responsive composite microparticle
US4115534A (en) * 1976-08-19 1978-09-19 Minnesota Mining And Manufacturing Company In vitro diagnostic test
US4357259A (en) * 1977-08-01 1982-11-02 Northwestern University Method of incorporating water-soluble heat-sensitive therapeutic agents in albumin microspheres
US4247406A (en) * 1979-04-23 1981-01-27 Widder Kenneth J Intravascularly-administrable, magnetically-localizable biodegradable carrier
US4331654A (en) * 1980-06-13 1982-05-25 Eli Lilly And Company Magnetically-localizable, biodegradable lipid microspheres
IL65131A0 (en) * 1982-02-28 1982-04-30 Yeda Res & Dev Process for the production of agarose-polyaldehyde beads and their biological applications
US4770183A (en) * 1986-07-03 1988-09-13 Advanced Magnetics Incorporated Biologically degradable superparamagnetic particles for use as nuclear magnetic resonance imaging agents
USRE35862E (en) * 1986-08-18 1998-07-28 Emisphere Technologies, Inc. Delivery systems for pharmacological agents encapsulated with proteinoids
US5578323A (en) * 1992-06-15 1996-11-26 Emisphere Technologies, Inc. Proteinoid carriers and methods for preparation and use thereof
US5629020A (en) * 1994-04-22 1997-05-13 Emisphere Technologies, Inc. Modified amino acids for drug delivery
US6331318B1 (en) 1994-09-30 2001-12-18 Emisphere Technologies Inc. Carbon-substituted diketopiperazine delivery systems
US6099856A (en) * 1992-06-15 2000-08-08 Emisphere Technologies, Inc. Active agent transport systems
US5443841A (en) * 1992-06-15 1995-08-22 Emisphere Technologies, Inc. Proteinoid microspheres and methods for preparation and use thereof
US6221367B1 (en) 1992-06-15 2001-04-24 Emisphere Technologies, Inc. Active agent transport systems
US6344213B1 (en) * 1996-03-29 2002-02-05 Emisphere Technologies, Inc. Compounds and compositions for delivering active agents
US5447728A (en) * 1992-06-15 1995-09-05 Emisphere Technologies, Inc. Desferrioxamine oral delivery system
US5693338A (en) * 1994-09-29 1997-12-02 Emisphere Technologies, Inc. Diketopiperazine-based delivery systems
US5541155A (en) * 1994-04-22 1996-07-30 Emisphere Technologies, Inc. Acids and acid salts and their use in delivery systems
US5714167A (en) * 1992-06-15 1998-02-03 Emisphere Technologies, Inc. Active agent transport systems
US5851828A (en) 1991-03-07 1998-12-22 The General Hospital Corporation Targeted cytolysis of HIV-infected cells by chimeric CD4 receptor-bearing cells
US5811127A (en) * 1992-06-15 1998-09-22 Emisphere Technologies, Inc. Desferrioxamine oral delivery system
US5792451A (en) * 1994-03-02 1998-08-11 Emisphere Technologies, Inc. Oral drug delivery compositions and methods
US5401516A (en) * 1992-12-21 1995-03-28 Emisphere Technologies, Inc. Modified hydrolyzed vegetable protein microspheres and methods for preparation and use thereof
US5643957A (en) * 1993-04-22 1997-07-01 Emisphere Technologies, Inc. Compounds and compositions for delivering active agents
US6461643B2 (en) * 1993-04-22 2002-10-08 Emisphere Technologies, Inc. Oral drug delivery compositions and methods
US5709861A (en) * 1993-04-22 1998-01-20 Emisphere Technologies, Inc. Compositions for the delivery of antigens
US5958457A (en) * 1993-04-22 1999-09-28 Emisphere Technologies, Inc. Compositions for the delivery of antigens
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US7968117B1 (en) 1994-12-02 2011-06-28 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Externally triggered microcapsules
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US5585725A (en) * 1995-04-13 1996-12-17 Associated Universities, Inc. Magnetic detection of underground pipe using timed-release marking droplets
US5820881A (en) * 1995-04-28 1998-10-13 Emisphere Technologies, Inc. Microspheres of diamide-dicarboxylic acids
US5667806A (en) * 1995-06-07 1997-09-16 Emisphere Technologies, Inc. Spray drying method and apparatus
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US5750147A (en) 1995-06-07 1998-05-12 Emisphere Technologies, Inc. Method of solubilizing and encapsulating itraconazole
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US2106882A (en) * 1936-12-12 1938-02-01 Magnaflux Corp Paste of paramagnetic particles for use in the examination of paramagnetic materials for flaws by the magnetic method
US2680079A (en) * 1951-04-04 1954-06-01 Huebner Company Method for making sheet or web material
US2671451A (en) * 1952-06-16 1954-03-09 Stephen J Bolger Remedial pill
US2800457A (en) * 1953-06-30 1957-07-23 Ncr Co Oil-containing microscopic capsules and method of making them
US2730457A (en) * 1953-06-30 1956-01-10 Ncr Co Pressure responsive record materials
US2730456A (en) * 1953-06-30 1956-01-10 Ncr Co Manifold record material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316119A (en) * 1960-09-29 1967-04-25 Litton Systems Inc Recording member for visibly recording radio frequency microwaves
EP0002119A1 (en) * 1977-11-10 1979-05-30 Moore Business Forms, Inc. Microcapsular electroscopic marking particles

Also Published As

Publication number Publication date
FR1190499A (en) 1959-10-13
US2971916A (en) 1961-02-14
CH375384A (en) 1964-02-29
NL224379A (en)
NL108169C (en)

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