GB1299035A - Minute magnetic capsules and thermomagnetically responsive record material utilizing the same - Google Patents
Minute magnetic capsules and thermomagnetically responsive record material utilizing the sameInfo
- Publication number
- GB1299035A GB1299035A GB24506/71A GB2450671A GB1299035A GB 1299035 A GB1299035 A GB 1299035A GB 24506/71 A GB24506/71 A GB 24506/71A GB 2450671 A GB2450671 A GB 2450671A GB 1299035 A GB1299035 A GB 1299035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- magnetic
- capsules
- encapsulated
- thermo
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
-
- 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
- B01J13/025—Applications of microcapsules not provided for in other subclasses
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Paints Or Removers (AREA)
Abstract
1299035 Thermo-magnetic recording media NATIONAL CASH REGISTER CO 19 April 1971 [2 April 1970] 24506/71 Heading G2H [Also in Divisions B6, B8 and H1] A capsule (5 to about 1000 Á average diam.) comprises a light transmitting polymer wall enclosing magnetic particles and a vehicle which is a solid or paste at 18-50‹C. but a liquid at temperatures above 50‹ C., so as to allow movement of the magnetic particles in response to a magnetic field and subsequent fixing of the particles thus moved. The vehicle may be a substance solid at room temperature but pasty or liquid on heating e.g. a wax. Many vehicles are specified. The capsules may also contain lightreflecting particles and/ or pigment particles (many specified). In one embodiment, the magnetic particles are themselves encapsulated with dye or pigment in a polymer matrix. Thermo-magnetic recording media are made by incorporating the capsules in or on (with or without a binder) a substrate of e.g. paper, glass or plastics. The wet image produced by application of heat and magnetic field is optionally permanent set thermally erasable. In Example 15 a core composition of barium ferrite, tristeam wax and sorbitan trioleate is encapsulated in gelatine-gum arabic and ethylene-maleic anhydride copolymer. The capsules are coated on to paper and polyethylene terephthalate substrates, dried and coated with polymethyl methacrylate. For further Examples, the materials encapsulated are stainless steel flakes, nickel flakes or a mixture of black magnetic iron oxide and titanium dioxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2522370A | 1970-04-02 | 1970-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1299035A true GB1299035A (en) | 1972-12-06 |
Family
ID=21824764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24506/71A Expired GB1299035A (en) | 1970-04-02 | 1971-04-19 | Minute magnetic capsules and thermomagnetically responsive record material utilizing the same |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5344425B1 (en) |
| AT (1) | AT307372B (en) |
| BE (1) | BE764978A (en) |
| BR (1) | BR7101963D0 (en) |
| CA (1) | CA918512A (en) |
| CH (1) | CH543155A (en) |
| DK (1) | DK130170B (en) |
| ES (1) | ES389705A1 (en) |
| FR (1) | FR2083280A5 (en) |
| GB (1) | GB1299035A (en) |
| NL (1) | NL163649C (en) |
| SE (1) | SE366851B (en) |
| ZA (1) | ZA711484B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750674A2 (en) * | 2004-05-27 | 2007-02-14 | Advanced Bionutrition Corporation | Microparticles for oral delivery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6106946A (en) * | 1996-03-15 | 2000-08-22 | Matsumoto Yushi-Seiyaku Co., Ltd. | Microcapsule containing magnetic fluid, manufacturing method, and use thereof |
-
1971
- 1971-02-11 CA CA105153A patent/CA918512A/en not_active Expired
- 1971-03-08 ZA ZA711484A patent/ZA711484B/en unknown
- 1971-03-30 ES ES389705A patent/ES389705A1/en not_active Expired
- 1971-03-30 BE BE764978A patent/BE764978A/en unknown
- 1971-03-31 FR FR7111239A patent/FR2083280A5/fr not_active Expired
- 1971-04-01 AT AT275471A patent/AT307372B/en not_active IP Right Cessation
- 1971-04-01 JP JP1998971A patent/JPS5344425B1/ja active Pending
- 1971-04-01 DK DK156471AA patent/DK130170B/en unknown
- 1971-04-01 BR BR1963/71A patent/BR7101963D0/en unknown
- 1971-04-01 SE SE04235/71A patent/SE366851B/xx unknown
- 1971-04-02 CH CH487671A patent/CH543155A/en not_active IP Right Cessation
- 1971-04-02 NL NL7104464.A patent/NL163649C/en active
- 1971-04-19 GB GB24506/71A patent/GB1299035A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750674A2 (en) * | 2004-05-27 | 2007-02-14 | Advanced Bionutrition Corporation | Microparticles for oral delivery |
| EP1750674A4 (en) * | 2004-05-27 | 2012-05-23 | Advanced Bionutrition Corp | Microparticles for oral delivery |
Also Published As
| Publication number | Publication date |
|---|---|
| ES389705A1 (en) | 1974-03-01 |
| FR2083280A5 (en) | 1971-12-10 |
| NL7104464A (en) | 1971-10-05 |
| NL163649B (en) | 1980-04-15 |
| BR7101963D0 (en) | 1973-04-26 |
| BE764978A (en) | 1971-08-16 |
| DK130170C (en) | 1975-06-16 |
| AT307372B (en) | 1973-05-25 |
| NL163649C (en) | 1980-09-15 |
| CA918512A (en) | 1973-01-09 |
| ZA711484B (en) | 1971-11-24 |
| CH543155A (en) | 1973-10-15 |
| DK130170B (en) | 1975-01-06 |
| JPS5344425B1 (en) | 1978-11-29 |
| SE366851B (en) | 1974-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4720301A (en) | Reversible heat sensitive recording composition | |
| US5699097A (en) | Display medium and method for display therewith | |
| US2928791A (en) | Temperature indicators | |
| US3221315A (en) | Magnetic recording medium utilizing microscopic capsules containing magnetic material | |
| US3377286A (en) | Developer powder containing black magnetic iron oxide | |
| EP0675457A4 (en) | Repeatedly usable recording medium card and recording medium card processor. | |
| KR840003667A (en) | Thermally stable iron oxide pigments and preparation method thereof | |
| GB1299035A (en) | Minute magnetic capsules and thermomagnetically responsive record material utilizing the same | |
| US5846630A (en) | Magnetic migration display panel | |
| US2584318A (en) | Marking member containing magnetized material | |
| US2940866A (en) | Heat sensitive copy sheet | |
| DE3069109D1 (en) | Use of vinyl phenol polymer as colour developer for leuco pigment and colour developer composition and thermosensitive recording element comprising same | |
| US3673597A (en) | Method and apparatus for recording and/or displaying images utilizing thermomagnetically sensitive microscopic capsules | |
| JP2004061818A (en) | Toner for electrophotographic method, developer for electrophotographic method, image, and sheet | |
| US3720658A (en) | Cholesteryl p-phenylazophenyl carbonate | |
| JP2004061820A (en) | Toner for electrophotographic method, developer for electrophotographic method, and rewrite card | |
| JPH06313880A (en) | Reloadable display media | |
| JP3506781B2 (en) | Reversible thermosensitive recording medium | |
| JPS5793197A (en) | Heat-sensitive recording material | |
| JPS59227489A (en) | Image recording sheet | |
| JPS55155360A (en) | Heat-sensitive magnetic recording body | |
| ES475129A1 (en) | A procedure to prepare a virator in fuel powder by heat. (Machine-translation by Google Translate, not legally binding) | |
| JPH086508A (en) | Display medium and its display method | |
| KR19980051949A (en) | Thermal, thermal recording paper | |
| JPH0713206A (en) | Reloadable display medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |