GB485303A - Improved method of manufacturing carriers for the mechanical recording of oscillations - Google Patents
Improved method of manufacturing carriers for the mechanical recording of oscillationsInfo
- Publication number
- GB485303A GB485303A GB639/37A GB63937A GB485303A GB 485303 A GB485303 A GB 485303A GB 639/37 A GB639/37 A GB 639/37A GB 63937 A GB63937 A GB 63937A GB 485303 A GB485303 A GB 485303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gelatine
- decomposed
- carriers
- oscillations
- acid
- 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
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
Landscapes
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
In the manufacture of films or other carriers for use in the mechanical recording of oscillations, the carriers are made of a pure gelatine which has been decomposed to a lower molecular colloid state, but not beyond the point at which a 10 per cent solution of the gelatine gelatinizes at 15 DEG C. The gelatine used should not be more impure than commercial photographic gelatine of medium quality, and may be decomposed by the action of heat or alkali, but preferably by means of acid. The acid may be neutralized when the gelatine is sufficiently decomposed, and crystallizable salts may then be removed by dialysis.ALSO:In the manufacture of films or other carriers for use in the mechanical recording of oscillations, the carriers are made of a pure gelatine which has been decomposed to a lower molecular colloid state, but not beyond the point at which a 10 per cent solution of the gelatine gelatinizes at 15 DEG C. The gelatine used should not be more impure than commercial photographic gelatine of medium quality, and may be decomposed by the action of heat or alkalies, but preferably by means of acid. The acid may be neutralized when the gelatine is sufficiently decomposed, and crystallizable salts may then be removed by dialysis.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE485303X | 1936-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485303A true GB485303A (en) | 1938-05-18 |
Family
ID=6543266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB639/37A Expired GB485303A (en) | 1936-01-11 | 1937-01-08 | Improved method of manufacturing carriers for the mechanical recording of oscillations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB485303A (en) |
-
1937
- 1937-01-08 GB GB639/37A patent/GB485303A/en not_active Expired
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