GB1059104A - Method and apparatus for producing recording material - Google Patents
Method and apparatus for producing recording materialInfo
- Publication number
- GB1059104A GB1059104A GB3373563A GB3373563A GB1059104A GB 1059104 A GB1059104 A GB 1059104A GB 3373563 A GB3373563 A GB 3373563A GB 3373563 A GB3373563 A GB 3373563A GB 1059104 A GB1059104 A GB 1059104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support
- dispersion
- layer
- magnetic
- supply means
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/02—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to surfaces by single means not covered by groups B05C1/00 - B05C7/00, whether or not also using other means
-
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/842—Coating a support with a liquid magnetic dispersion
- G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
1,059,104. Coating webs. GEVAERT PHOTO-PRODUCTEN N.V. Aug. 26, 1963 [Aug. 24, 1962], No. 33735/63. Heading D1L. In coating a dispersion of magnetic material in a binder on to a support to form a layer thereon a supply means, e.g. an extruder head 11 is located in close proximity to the support 19 whilst this is continuously moved, and a magnetic field is maintained across the gap between the supply means and the support or a part lying close to or in contact with that face of the support which is opposite the face thereof on to which the dispersion is supplied. The magnetic lines of force are preferably arranged to be normal to the face of the support and they may extend over the major part of the width of the support but leave marginal portions. The support can be a web of material which forms a permanent support for the layer of dispersion or a roller or continuous belt from which the layer of dispersion can be removed. With an extruder type supply means, excess dispersion can be supplied to the extruder, the excess being removed from the extruder by a pump in a closed circuit arrangement (Fig. 3, not shown). Other forms of supply means illustrated are direct meniscus type and roller meniscus type coating apparatus with air knifes to control the thickness of the dispersion layer. The magnetic field can be produced from a permanent magnet or electromagnets with direct or alternating current. The magnetic layer may be aferro magnetic pigment dispersed into a solution of a film forming synthetic resin in a volatile solvent and may be applied to a base of plastics material, e.g. cellulose diacetate, cellulose triacetate, poly (vinyl chloride), poly (carbonates) and poly (ethylene terephthalate). After treatment such as stretching or calendering may be applied to the coated material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE41902 | 1962-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1059104A true GB1059104A (en) | 1967-02-15 |
Family
ID=3840317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3373563A Expired GB1059104A (en) | 1962-08-24 | 1963-08-26 | Method and apparatus for producing recording material |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1295732B (en) |
GB (1) | GB1059104A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2476362A1 (en) * | 1980-02-19 | 1981-08-21 | Sony Corp | METHOD FOR MANUFACTURING A MAGNETIC RECORDING MEANS |
FR2476891A1 (en) * | 1980-02-22 | 1981-08-28 | Sony Corp | METHOD FOR MANUFACTURING A MAGNETIC RECORDING MEDIUM |
FR2741285A1 (en) * | 1995-11-21 | 1997-05-23 | Sony Corp | Extrusion applicator for magnetic coating of tape and disc |
US5704978A (en) * | 1995-05-23 | 1998-01-06 | Sony Corporation | Coating apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3123746A1 (en) * | 1981-06-15 | 1982-12-30 | Agfa-Gevaert Ag, 5090 Leverkusen | MAGNETIC ALIGNMENT SYSTEM |
DE3575035D1 (en) * | 1985-04-26 | 1990-02-01 | Ibm Deutschland | MAGNETIC RECORDING CARRIER AND METHOD FOR THE PRODUCTION THEREOF. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1007387A (en) * | 1949-12-23 | 1952-05-05 | Manufacturing process of magnetic tapes for sound recordings | |
US2796359A (en) * | 1952-07-05 | 1957-06-18 | Audio Devices Inc | Production of magnetic sound recording tape |
IT557307A (en) * | 1955-02-23 | 1900-01-01 |
-
1963
- 1963-08-24 DE DE1963G0038542 patent/DE1295732B/en not_active Withdrawn
- 1963-08-26 GB GB3373563A patent/GB1059104A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2476362A1 (en) * | 1980-02-19 | 1981-08-21 | Sony Corp | METHOD FOR MANUFACTURING A MAGNETIC RECORDING MEANS |
FR2476891A1 (en) * | 1980-02-22 | 1981-08-28 | Sony Corp | METHOD FOR MANUFACTURING A MAGNETIC RECORDING MEDIUM |
US5704978A (en) * | 1995-05-23 | 1998-01-06 | Sony Corporation | Coating apparatus |
FR2741285A1 (en) * | 1995-11-21 | 1997-05-23 | Sony Corp | Extrusion applicator for magnetic coating of tape and disc |
Also Published As
Publication number | Publication date |
---|---|
DE1295732B (en) | 1969-05-22 |
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