GB1236424A - Photochromic projection system - Google Patents
Photochromic projection systemInfo
- Publication number
- GB1236424A GB1236424A GB32493/70A GB3249370A GB1236424A GB 1236424 A GB1236424 A GB 1236424A GB 32493/70 A GB32493/70 A GB 32493/70A GB 3249370 A GB3249370 A GB 3249370A GB 1236424 A GB1236424 A GB 1236424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- photochromic
- light
- visible light
- lamp
- 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
- 239000000463 material Substances 0.000 abstract 6
- 230000005855 radiation Effects 0.000 abstract 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- 230000008030 elimination Effects 0.000 abstract 2
- 238000003379 elimination reaction Methods 0.000 abstract 2
- 229910052753 mercury Inorganic materials 0.000 abstract 2
- 239000003381 stabilizer Substances 0.000 abstract 2
- 229910052721 tungsten Inorganic materials 0.000 abstract 2
- 229920000742 Cotton Polymers 0.000 abstract 1
- 238000000862 absorption spectrum Methods 0.000 abstract 1
- 239000000549 coloured material Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229910052573 porcelain Inorganic materials 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 150000007659 semicarbazones Chemical class 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 230000000638 stimulation Effects 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
1,236,424. Photochromic materials and uses thereof. CANON K.K. 15 Feb., 1968 [20 Feb., 1967; 31 May, 1967; 19 June, 1967; 2 Aug., 1967; 16 Aug., 1967], No. 32493/70. Divided out of 1,236,421. Addition to 1,236,421. Heading C4S. [Also in Division G2] A projection system comprises a photochromic screen, a projector, and means for illuminating the whole screen with light of insufficient intensity to eliminate a colour image, formed by stimulation of light wherein the screen is a recording member as in claim 1 of the parent Specification. Photochromic material includes material coloured under U.V. or thermal radiation and also naturally coloured material losing colour under characteristic wavelength radiation. Many photochromic compounds are instanced including spirans, anils, and semicarbazones and may be dispersed, with a stabilizer, in a matrix containing a filmforming material on a base of resin, glass, metal, paper, fibre, wood, porcelain, or woven cloth. Many solvents and film forming materials (e.g. condensate type polymers, and homopolymers) are instanced and may shift the absorption spectrum wavelength as referred to in codivisional Specification 1,236,423. Positive and negative images may be obtained from positive and negative transparencies and the material provides an after image so that continuous projection is not necessary. In Fig. 1 (not shown), screen (16) comprises 1,3,3-trimethylindolino- 6<SP>1</SP>-nitrobenzopyrylspiran in toluene, and U.V. light proceeds from visible light cut out filter (12) ahead of mercury lamp (11) and adjacent negative slide (13). Visible light from lamp (11) may hasten elimination. In Fig. 2, all screen (26) is colour developed by light sources 27, with visible light cut-out filters 28 in front of or behind the screen when translucent. Visible light from tungsten lamp 21 is projected through positive slide 23, and U.V. radiation alone may erase. In Fig. 3 (not shown), 1,3,3-trimethylindolino- 8<SP>1</SP>-carboxybenzopyrylspiran and a stabilizer are dissolved in water and added to an aqueous P.V.A. solution and coated on cotton. Elimination may be by U.V. and/or intense visible radiation and the projection source may be a W or Hg lamp (31).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1107067 | 1967-02-20 | ||
| JP3507567A JPS5323699B1 (en) | 1967-05-31 | 1967-05-31 | |
| JP3920367 | 1967-06-19 | ||
| JP4928067 | 1967-08-02 | ||
| JP5285967 | 1967-08-16 | ||
| US67121867A | 1967-09-28 | 1967-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236424A true GB1236424A (en) | 1971-06-23 |
Family
ID=27548311
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32492/70A Expired GB1236423A (en) | 1967-02-20 | 1968-02-15 | Colour image recording member |
| GB32491/70A Expired GB1236422A (en) | 1967-02-20 | 1968-02-15 | Method of rendering photochromic images permanent |
| GB32493/70A Expired GB1236424A (en) | 1967-02-20 | 1968-02-15 | Photochromic projection system |
| GB7525/68A Expired GB1236421A (en) | 1967-02-20 | 1968-02-15 | Photochromic recording member |
| GB45959/68A Expired GB1183907A (en) | 1967-02-20 | 1968-09-27 | Photographic Silver Materials and Processes |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32492/70A Expired GB1236423A (en) | 1967-02-20 | 1968-02-15 | Colour image recording member |
| GB32491/70A Expired GB1236422A (en) | 1967-02-20 | 1968-02-15 | Method of rendering photochromic images permanent |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7525/68A Expired GB1236421A (en) | 1967-02-20 | 1968-02-15 | Photochromic recording member |
| GB45959/68A Expired GB1183907A (en) | 1967-02-20 | 1968-09-27 | Photographic Silver Materials and Processes |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3563740A (en) |
| BE (1) | BE721563A (en) |
| DE (5) | DE1622263A1 (en) |
| FR (1) | FR1602526A (en) |
| GB (5) | GB1236423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570423B2 (en) | 2007-01-25 | 2009-08-04 | Hewlett-Packard Development Company, L.P. | Projection screen |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9610769D0 (en) * | 1996-05-23 | 1996-07-31 | Sls Wales Ltd | Image production |
| EP1200877B1 (en) | 1999-07-08 | 2003-10-01 | Kromotek Ltd. | Dry photographic printing process |
| DE102008049848A1 (en) * | 2008-10-01 | 2010-04-08 | Tesa Se | Multigrade indicator |
| CN108689978B (en) * | 2018-05-14 | 2021-11-12 | 南京信息工程大学 | 2-imino-3- (4-nitrophenyl) -6- [2- (4-nitrophenyl) azo ] benzopyran |
-
1967
- 1967-09-28 US US671218A patent/US3563740A/en not_active Expired - Lifetime
-
1968
- 1968-02-15 GB GB32492/70A patent/GB1236423A/en not_active Expired
- 1968-02-15 GB GB32491/70A patent/GB1236422A/en not_active Expired
- 1968-02-15 GB GB32493/70A patent/GB1236424A/en not_active Expired
- 1968-02-15 GB GB7525/68A patent/GB1236421A/en not_active Expired
- 1968-02-20 DE DE19681622263 patent/DE1622263A1/en active Pending
- 1968-02-20 DE DE19681797590 patent/DE1797590A1/en active Pending
- 1968-02-20 DE DE19681797589 patent/DE1797589A1/en active Pending
- 1968-02-20 DE DE19681797588 patent/DE1797588A1/en active Pending
- 1968-09-19 FR FR1602526D patent/FR1602526A/fr not_active Expired
- 1968-09-24 DE DE19681797388 patent/DE1797388A1/en active Pending
- 1968-09-27 BE BE721563D patent/BE721563A/xx unknown
- 1968-09-27 GB GB45959/68A patent/GB1183907A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570423B2 (en) | 2007-01-25 | 2009-08-04 | Hewlett-Packard Development Company, L.P. | Projection screen |
Also Published As
| Publication number | Publication date |
|---|---|
| BE721563A (en) | 1969-03-03 |
| GB1236421A (en) | 1971-06-23 |
| DE1797589A1 (en) | 1973-11-08 |
| GB1183907A (en) | 1970-03-11 |
| GB1236422A (en) | 1971-06-23 |
| GB1236423A (en) | 1971-06-23 |
| DE1797388A1 (en) | 1970-12-23 |
| DE1797590A1 (en) | 1973-11-08 |
| DE1622263A1 (en) | 1970-12-03 |
| US3563740A (en) | 1971-02-16 |
| DE1797588A1 (en) | 1974-01-10 |
| FR1602526A (en) | 1970-12-21 |
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