WO1996040499B1 - Optical storage medium - Google Patents
Optical storage mediumInfo
- Publication number
- WO1996040499B1 WO1996040499B1 PCT/US1996/008753 US9608753W WO9640499B1 WO 1996040499 B1 WO1996040499 B1 WO 1996040499B1 US 9608753 W US9608753 W US 9608753W WO 9640499 B1 WO9640499 B1 WO 9640499B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- image
- optically readable
- heat
- exposing
- Prior art date
Links
- 230000003287 optical Effects 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract 17
- 238000001228 spectrum Methods 0.000 claims abstract 6
- 229910000314 transition metal oxide Inorganic materials 0.000 claims abstract 4
- 238000010438 heat treatment Methods 0.000 claims abstract 3
- 239000000126 substance Substances 0.000 claims abstract 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 7
- 229910052760 oxygen Inorganic materials 0.000 claims 7
- 239000001301 oxygen Substances 0.000 claims 7
- 230000015572 biosynthetic process Effects 0.000 claims 5
- 238000005755 formation reaction Methods 0.000 claims 5
- 238000006552 photochemical reaction Methods 0.000 claims 5
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims 4
- 230000001427 coherent Effects 0.000 claims 3
- 229910044991 metal oxide Inorganic materials 0.000 claims 3
- 150000004706 metal oxides Chemical class 0.000 claims 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 3
- 239000000758 substrate Substances 0.000 claims 3
- 229910052719 titanium Inorganic materials 0.000 claims 2
- 229910001413 alkali metal ion Inorganic materials 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000002329 infrared spectrum Methods 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052904 quartz Inorganic materials 0.000 claims 1
- 239000010453 quartz Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
Abstract
A data storage process which includes an erasable, high density, storage medium (7) having a transition metal oxide layer where the oxide layer is capable of undergoing an optically readable chemical change when simultaneously exposed to heat and to light of a selected wavelength. An optically readable image is formed in selected regions of the oxide layer under ambient conditions which include O2 by simultaneously exposing the layer to heat and to radiation in the blue-green or shorter wavelength spectrum. The image is erased by heating the entire medium using a furnace or by heating selected portions with IR radiation.
Claims
1. A data storage process which comprises: a. providing an erasable high speed, high density, storage medium which includes a transition metal oxide layer where said oxide layer is capable of undergoing an optically readable chemical change when simultaneously exposed to heat and to light of a selected wavelength; and b. simultaneously exposing said layer to heat and to radiation in the blue-green or shorter wavelength spectrum under ambient conditions which include oxygen, whereby a photochemical reaction is induced which includes an exchange of oxygen, resulting in the formation of an optically readable image in the exposed regions of said oxide layer.
2. The process of claim 1 which further includes selectively erasing at least part of the image by exposing said image to heat.
3. The process of claim 2 in which the heat is in the form of infrared radiation.
4. The process of claim 1 which further includes erasing the entire image by exposing the entire image to heat.
5. The process of claim 1 in which the metal oxide is an oxide of any one of W. Mo, Ti. or V.
6. The process of claim 5 in which the oxide in the written state is a mixed valence compound.
I. A data storage process which comprises: a. providing an erasable high speed, high density storage medium which includes a coherent transition metal oxide layer in which the metal oxide is an oxide of any one of W, Mo, Ti, or V; b. simultaneously exposing said layer under ambient conditions and in the presence of O2 to radiation in the blue-green or shorter wavelength spectrum and infrared spectrum in selective regions of said layer; whereby a photochemical reaction is induced which includes an exchange of oxygen, resulting in the formation of an optically readable image in the exposed regions of said oxide layer; and c. selectively erasing at least a portion of the image formed in (b) above by exposing said image to infrared radiation in the presence of O2.
8. The process of claim 7 wherein the entire image can be erased by heating the medium in an oven.
9. A data storage process which comprises: a. providing an erasable storage medium which includes a coherent layer of W03 contained on a supporting substrate; and b. simultaneously exposing said layer to blue-green light or shorter wavelength spectrum, and infrared light selective regions of said layer, under ambient conditions including O2 whereby a photochemical reaction is induced which includes an exchange of oxygen, resulting in the formation of a permanent optically readable image thereon.
10. The process of claim 9 which further includes erasing at least a portion of said optically readable image by exposing said image to infrared radiation.
11. The process of claim 9 in which the WO3 layer is contained on a disk.
12. The process of claim 9 in which the WO3 layer is supported on a quartz or silica substrate.
13. The process of claim 9 in which the WO3 layer has a thickness in the range of about 1 - 10 μm.
14. A data storage process which comprises: a. providing an erasable storage medium which includes a coherent layer of MoO3 contained on a supporting substrate; and b. simultaneously exposing said layer to blue-green light or shorter wavelength spectrum, and infrared light in selective regions of said layer, under ambient conditions including 02 whereby a photochemical reaction is induced which includes an exchange of oxygen, resulting in the formation of a permanent optically readable image thereon.
15. A data storage process which comprises: a. providing an erasable high speed, high density, storage medium which includes a transition metal oxide layer selected from the group consisting of W03, MoO3, and V2O5, and where said oxide layer is capable of undergoing an optically readable chemical change when simultaneously exposed to heat and to light of a selected wavelength; and b. simultaneously exposing said layer to heat and to radiation in the blue-green or shorter wavelength spectrum under ambient conditions which include oxygen, whereby a photochemical reaction is induced which includes an exchange of oxygen, resulting in the formation of an optically readable image in the exposed regions of said oxide layer.
16. The process of claim 1 when the metal oxide is doped with an alkali metal ion or proton.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9501250A JPH11510635A (en) | 1995-06-07 | 1996-06-05 | Optical storage media |
| EP96917134A EP0846055A4 (en) | 1995-06-07 | 1996-06-05 | Optical storage medium |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/481,818 US5691091A (en) | 1995-06-07 | 1995-06-07 | Optical storage process |
| US08/481,818 | 1995-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996040499A1 WO1996040499A1 (en) | 1996-12-19 |
| WO1996040499B1 true WO1996040499B1 (en) | 1997-01-16 |
Family
ID=23913510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1996/008753 WO1996040499A1 (en) | 1995-06-07 | 1996-06-05 | Optical storage medium |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US5691091A (en) |
| EP (1) | EP0846055A4 (en) |
| JP (1) | JPH11510635A (en) |
| CA (1) | CA2224072A1 (en) |
| WO (1) | WO1996040499A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10214424A (en) * | 1997-01-29 | 1998-08-11 | Ekisupaato Magnetics Kk | Method and device for erasing cd-r |
| US6461594B1 (en) * | 1999-01-28 | 2002-10-08 | Syracuse University | Photochromic materials suitable for cosmetic and sunblocking effects |
| US6180318B1 (en) * | 1999-05-19 | 2001-01-30 | 3M Innovative Properties Company | Method of imaging an article |
| FR2832251B1 (en) * | 2001-11-12 | 2006-08-25 | Univ Toulouse | USES OF OXIDABLE SPINAL OXIDES AS SENSITIVE LAYER MATERIALS OF AN OPTICAL SUPPORT RECORDABLE ONLY ONCE |
| JP2003237242A (en) * | 2002-02-22 | 2003-08-27 | Sony Corp | Optical recording medium and method |
| DE60334825D1 (en) * | 2002-10-10 | 2010-12-16 | Sony Corp | METHOD FOR PRODUCING AN ORIGINAL FOR OPTICAL DATA CARRIER USE AND METHOD FOR PRODUCING AN OPTICAL DATA SUPPORT |
| JP4239977B2 (en) * | 2003-01-09 | 2009-03-18 | ソニー株式会社 | Manufacturing method of optical disc manufacturing master and optical disc manufacturing method |
| DE602004010451T2 (en) * | 2003-04-15 | 2008-11-20 | Ricoh Co., Ltd. | Write-once, multi-read optical disc and method for writing and reading the disc |
| JP4626284B2 (en) * | 2003-12-05 | 2011-02-02 | 住友金属鉱山株式会社 | Method for producing tungsten oxide fine particles for forming solar shield, and tungsten oxide fine particles for forming solar shield |
| US7911673B1 (en) | 2006-11-27 | 2011-03-22 | Hrl Laboratories, Llc | Display screen with optical memory |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971874A (en) * | 1973-08-29 | 1976-07-27 | Matsushita Electric Industrial Co., Ltd. | Optical information storage material and method of making it |
| JPS5528530A (en) * | 1978-08-17 | 1980-02-29 | Matsushita Electric Ind Co Ltd | Optical information recording method |
| JPH0697513B2 (en) * | 1982-01-12 | 1994-11-30 | 大日本インキ化学工業株式会社 | Optical recording medium |
| JPS59185048A (en) * | 1983-04-01 | 1984-10-20 | Matsushita Electric Ind Co Ltd | Member for recording optical information and its recording method |
| JPS605436A (en) * | 1983-06-21 | 1985-01-12 | Ricoh Co Ltd | Optical recording medium |
| JPS61133065A (en) * | 1984-12-03 | 1986-06-20 | Hitachi Ltd | Optical information recording device |
| US4960679A (en) * | 1985-01-31 | 1990-10-02 | Canon Kabushiki Kaisha | Image forming device |
| JPS61211850A (en) * | 1985-03-15 | 1986-09-19 | Matsushita Electric Ind Co Ltd | Production of recording material |
| US4711815A (en) * | 1985-03-07 | 1987-12-08 | Matsushita Electric Industrial Co., Ltd. | Recording medium |
| GB8606651D0 (en) * | 1986-03-18 | 1986-04-23 | Green M | Electrochromic data recording systems |
| US4774702A (en) * | 1986-04-03 | 1988-09-27 | Ltv Aerospace And Defense Company | Erasable optical memory employing a marmen alloy to effect phase-change erasing in a chalcogenide film |
| EP0337553B1 (en) * | 1988-04-13 | 1993-12-01 | Koninklijke Philips Electronics N.V. | Laminated product, compound used in the laminated product and optical information carrier provided with the laminated product |
| CA2000597C (en) * | 1988-10-21 | 1995-07-11 | Toshio Ishikawa | Optical recording element |
| EP0376700B1 (en) * | 1988-12-28 | 1995-02-22 | Matsushita Electric Industrial Co., Ltd. | Information recording medium |
| US5279932A (en) * | 1989-09-13 | 1994-01-18 | Fuji Photo Film Co., Ltd. | Optical response element |
| US5272667A (en) * | 1989-12-29 | 1993-12-21 | Matsushita Electric Industrial Co., Ltd. | Optical information recording apparatus for recording optical information in a phase change type optical recording medium and method therefor |
| US5145733A (en) * | 1990-03-16 | 1992-09-08 | Canon Kabushiki Kaisha | Electro-deposition coated member |
-
1995
- 1995-06-07 US US08/481,818 patent/US5691091A/en not_active Expired - Fee Related
-
1996
- 1996-06-05 EP EP96917134A patent/EP0846055A4/en not_active Withdrawn
- 1996-06-05 JP JP9501250A patent/JPH11510635A/en active Pending
- 1996-06-05 CA CA002224072A patent/CA2224072A1/en not_active Abandoned
- 1996-06-05 WO PCT/US1996/008753 patent/WO1996040499A1/en not_active Application Discontinuation
-
1997
- 1997-05-01 US US08/846,848 patent/US5837424A/en not_active Expired - Lifetime
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