GB495680A - Method of preparing a film of regenerated cellulose adapted to receive a mechanically-produced sound record - Google Patents
Method of preparing a film of regenerated cellulose adapted to receive a mechanically-produced sound recordInfo
- Publication number
- GB495680A GB495680A GB4592/38A GB459238A GB495680A GB 495680 A GB495680 A GB 495680A GB 4592/38 A GB4592/38 A GB 4592/38A GB 459238 A GB459238 A GB 459238A GB 495680 A GB495680 A GB 495680A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- cellulose
- regenerated cellulose
- mechanically
- film
- 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
- 239000004627 regenerated cellulose Substances 0.000 title abstract 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 229920002678 cellulose Polymers 0.000 abstract 2
- 229920002301 cellulose acetate Polymers 0.000 abstract 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 2
- 229910052753 mercury Inorganic materials 0.000 abstract 2
- 229910052976 metal sulfide Inorganic materials 0.000 abstract 2
- 238000007127 saponification reaction Methods 0.000 abstract 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000001856 Ethyl cellulose Substances 0.000 abstract 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 230000001476 alcoholic effect Effects 0.000 abstract 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 150000001989 diazonium salts Chemical class 0.000 abstract 1
- 229920001249 ethyl cellulose Polymers 0.000 abstract 1
- 235000019325 ethyl cellulose Nutrition 0.000 abstract 1
- 150000002485 inorganic esters Chemical class 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical compound [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002815 nickel Chemical class 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 150000002895 organic esters Chemical class 0.000 abstract 1
- 235000011118 potassium hydroxide Nutrition 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229910001961 silver nitrate Inorganic materials 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- QXKXDIKCIPXUPL-UHFFFAOYSA-N sulfanylidenemercury Chemical compound [Hg]=S QXKXDIKCIPXUPL-UHFFFAOYSA-N 0.000 abstract 1
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
Abstract
A mechanically-produced and optically-reproducible sound record is obtained by subjecting a film of a cellulose derivative such as an organic or inorganic ester to saponification at its surface to a depth sufficient for the reception of the record, and providing the surface of the layer of regenerated cellulose with a covering layer which is opaque to the light required for the reproducing and copying operations, the sound record being then mechanically produced on the film, e.g. by means of a V-shaped chisel. The cellulose ester may be cellulose acetate or nitrate. The covering layer may be obtained by applying a sol, associated with a protective colloid, of a metal sulphide such as mercury sulphide, or Berlin blue, or colloidal carbon, or it may be obtained by applying a metal salt solution such as a nickel salt and then treating with a sulphide solution so as to obtain an insoluble metal sulphide. As an alternative, the opaque coating may be obtained by treating the regenerated cellulose layer with a photosensitive diazonium compound, exposing it and causing the light-decomposition product to react with a mercurous salt whereby a mercury layer is produced on and in the regenerated cellulose layer. The mercury layer may be converted to a highly opaque silver layer by treatment with silver nitrate. In the case of cellulose acetate, the saponification may be carried out with alcoholic caustic potash. The Specification as open to inspection under Sect. 91 refers also to the use of benzyl and ethyl cellulose ether films. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1937N0040383 DE700179C (en) | 1937-02-17 | 1937-02-17 | Process for the production of a tape-shaped phonetic transcription carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495680A true GB495680A (en) | 1938-11-17 |
Family
ID=7348182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4592/38A Expired GB495680A (en) | 1937-02-17 | 1938-02-14 | Method of preparing a film of regenerated cellulose adapted to receive a mechanically-produced sound record |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2163087A (en) |
| AT (1) | AT156919B (en) |
| CH (1) | CH207746A (en) |
| DE (1) | DE700179C (en) |
| FR (1) | FR833728A (en) |
| GB (1) | GB495680A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2522078A (en) * | 1945-02-03 | 1950-09-12 | Joseph B Walker | Translucent recording medium |
-
1937
- 1937-02-17 DE DE1937N0040383 patent/DE700179C/en not_active Expired
- 1937-05-24 US US144498A patent/US2163087A/en not_active Expired - Lifetime
-
1938
- 1938-02-14 GB GB4592/38A patent/GB495680A/en not_active Expired
- 1938-02-14 FR FR833728D patent/FR833728A/en not_active Expired
- 1938-02-15 CH CH207746D patent/CH207746A/en unknown
- 1938-02-16 AT AT156919D patent/AT156919B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| AT156919B (en) | 1939-09-11 |
| DE700179C (en) | 1940-12-14 |
| CH207746A (en) | 1939-11-30 |
| US2163087A (en) | 1939-06-20 |
| FR833728A (en) | 1938-10-28 |
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