DE2720164A1 - Einrichtung zum feststellen von markierungsloechern - Google Patents
Einrichtung zum feststellen von markierungsloechernInfo
- Publication number
- DE2720164A1 DE2720164A1 DE19772720164 DE2720164A DE2720164A1 DE 2720164 A1 DE2720164 A1 DE 2720164A1 DE 19772720164 DE19772720164 DE 19772720164 DE 2720164 A DE2720164 A DE 2720164A DE 2720164 A1 DE2720164 A1 DE 2720164A1
- Authority
- DE
- Germany
- Prior art keywords
- plate
- wavelength
- magnetic
- marking holes
- radiation
- 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.)
- Withdrawn
Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 7
- 238000001429 visible spectrum Methods 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims 2
- 230000035945 sensitivity Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/24—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording
- G11B27/26—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by sensing features on the record carrier other than the transducing track ; sensing signals or marks recorded by another method than the main recording by photoelectric detection, e.g. of sprocket holes
Landscapes
- Paints Or Removers (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Transform (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70131876A | 1976-06-30 | 1976-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2720164A1 true DE2720164A1 (de) | 1978-01-12 |
Family
ID=24816885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772720164 Withdrawn DE2720164A1 (de) | 1976-06-30 | 1977-05-05 | Einrichtung zum feststellen von markierungsloechern |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS533307A (enrdf_load_stackoverflow) |
| DE (1) | DE2720164A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2357029A1 (enrdf_load_stackoverflow) |
| IT (1) | IT1115670B (enrdf_load_stackoverflow) |
-
1977
- 1977-05-05 DE DE19772720164 patent/DE2720164A1/de not_active Withdrawn
- 1977-05-25 FR FR7716790A patent/FR2357029A1/fr active Granted
- 1977-05-27 JP JP6129577A patent/JPS533307A/ja active Pending
- 1977-06-07 IT IT2442377A patent/IT1115670B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS533307A (en) | 1978-01-13 |
| FR2357029A1 (fr) | 1978-01-27 |
| IT1115670B (it) | 1986-02-03 |
| FR2357029B1 (enrdf_load_stackoverflow) | 1980-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |