Patent US3909266A successfully refreshed from Google Patents.
US3909266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording member of photocolor developing and eliminating material and the recording method
Assignee: Canon Inc
•
Filing: 1973-01-22
•
Granted: 1975-09-30
•
Expires: 1993-01-22
Abstract
Abstract This invention provides a photocolor developing and eliminating composition, a recording member of monochrome or multicolor developing and eliminating composition, method for image forming, fixing, or restoring which is applicable to said recording members and usual recording members of photocolor developing and eliminating material, and method for projecting image on a screen of photocolor developing and eliminating material. A photocolor developing and eliminating composition comprises a photocolor developing and eliminating material and a stabilizer, which is either electron or proton donating or accepting material or solid matter, on which surface said material being dispersed and which inherently possesses acidic, basic, ionic, electric charge transferring or high surface energy property at the surface, and the stabilizer stabilizing the color-developed state continuously, restoring after fixing the color-developed state to the colorless state by the stimulus of radiation having another range of wave length and reproducing a stable color-development. The multicolor developing and eliminating composition comprises a film matter prepared by incorporating a photocolor developing and eliminating material to a transparent or translucent dispersion medium or the film attaching to a support such as paper and the like, and the recording member is wholly color-developed by irradiating it by a radiation having at least one range of wavelength such as light, heat and the like. Particularly, at least one dispersion medium is used to cover the whole visible light range in the colored state. And the color image recording method is very useful for the rapid, simple and much memorizing and recording in information industry such as communication, measurement, documentation and display.
Inventors
- 👤 Eiichi Inoue
- 👤 Isamu Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
138 words
A PROCESS WHICH COMPRICES IRRADIATING A RECORDING MEMBER INCLUDING IN THE PHOTOSENSITIVE LAYER A PHOTOCHROMATIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBINOLS, CYANITES, SULFIDES, SPIROPYANS, ANILS, NITROBENZYL PYRIDINED, AZOBENZENES, STILBENE AND BIATHRONES BT AT LEAST ONE RADIATON THROUGH AN ORGINAL IMAGE PATTERN TO FORM AN IMAGE ON THE RECORDING MEMBER AND TREATING THE RESULTING IMAGE WITH A BASIC MATERIAL OR AN ANIOONIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, AMMONIA AND AMINO COMPOUNDS TO FIX SAID IMAGE AS A PERMENENT IMAGE, SAID PHOTOCHROMIC MATERIAL HAVING A PROPERTY THAT WHEN IRRADIATED BY A RADIATION OF A SPECIFIC ABSORPTION WAVELENGTH RANGE, IT OBTAINS AN ABSORPTION WAVELENGTH IN THE VISIBLE LIGHT REGION, THEREBY BEING COLOR-DEVELOPED AND THE COLORDEVELOPED STATE IS ELIMINATED WHEN IRRADICATED BY RADIATION A WAVELENGTH RANGE DIFFERENT FROM THAT OF THE PREVIOUSLY APPLIED RADIATION.
Claim 2
Dependent Claim
138 words
A PROCESS WHICH COMPRICES IRRADIATING A RECORDING MEMBER INCLUDING IN THE PHOTOSENSITIVE LAYER A PHOTOCHROMATIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBINOLS, CYANITES, SULFIDES, SPIROPYANS, ANILS, NITROBENZYL PYRIDINED, AZOBENZENES, STILBENE AND BIATHRONES BT AT LEAST ONE RADIATON THROUGH AN ORGINAL IMAGE PATTERN TO FORM AN IMAGE ON THE RECORDING MEMBER AND TREATING THE RESULTING IMAGE WITH A BASIC MATERIAL OR AN ANIOONIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE, AMMONIA AND AMINO COMPOUNDS TO FIX SAID IMAGE AS A PERMENENT IMAGE, SAID PHOTOCHROMIC MATERIAL HAVING A PROPERTY THAT WHEN IRRADIATED BY A RADIATION OF A SPECIFIC ABSORPTION WAVELENGTH RANGE, IT OBTAINS AN ABSORPTION WAVELENGTH IN THE VISIBLE LIGHT REGION, THEREBY BEING COLOR-DEVELOPED AND THE COLORDEVELOPED STATE IS ELIMINATED WHEN IRRADICATED BY RADIATION A WAVELENGTH RANGE DIFFERENT FROM THAT OF THE PREVIOUSLY APPLIED RADIATION.
Claim 3
Dependent Claim
189 words
A process which comprises irradiating a recording member including in the photosensitive layer a photochromic material selected from the group consisting of carbinols, cyanides, sulfides, spiropyrans, anils, nitrobenzyl pyridines, azobenzenes, stilbene and bianthrones, by at least one radiation through an original image pattern to form an image on the recording member and treating the resulting image with a basic material or an anionic material selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonia and amino compounds, to fix said image as a permenent image, and then the image surface of the recording member is treated by an acidic material or a cationic material selected from the group consisting of acetic acid, benzoic acid, hydrochloric acid, nitric acid and solid Lewis acids to restore the permanent image surface to the color-developed image surface, said photochromic material having a property that when irradiated by a radiation of a specific absorption wavelength range, it obtains an absorption wavelength range in the visible light region, thereby being color-developed and the color-developed state is eliminated when irradiated by a radiation of a wavelength range different from that of the previously applied radiation.
Claim 4
Dependent Claim
189 words
A process which comprises irradiating a recording member including in the photosensitive layer a photochromic material selected from the group consisting of carbinols, cyanides, sulfides, spiropyrans, anils, nitrobenzyl pyridines, azobenzenes, stilbene and bianthrones, by at least one radiation through an original image pattern to form an image on the recording member and treating the resulting image with a basic material or an anionic material selected from the group consisting of sodium hydroxide, potassium hydroxide, ammonia and amino compounds, to fix said image as a permenent image, and then the image surface of the recording member is treated by an acidic material or a cationic material selected from the group consisting of acetic acid, benzoic acid, hydrochloric acid, nitric acid and solid Lewis acids to restore the permanent image surface to the color-developed image surface, said photochromic material having a property that when irradiated by a radiation of a specific absorption wavelength range, it obtains an absorption wavelength range in the visible light region, thereby being color-developed and the color-developed state is eliminated when irradiated by a radiation of a wavelength range different from that of the previously applied radiation.
Claim 5
Dependent Claim
114 words
A color recording process which comprises applying a blanket irradiation of ultraviolet ray or heat to a photochromic recording member having a photosensitive layer containing a photochromic material having a visible light absorption spectrum peak in the colored state present at 400-500 Mu , a photochromic material having a visible light absorption spectrum peak in the colored state present at 500-600 Mu and a photochromic material having a visible light absorption spectrum peak in the colored state present at 600-700 Mu , color developing all of the photochromic materials, selectively eliminating the color of the colored photochromic materials corresponding to each absorption spectrum by applying color light image thereto, thereby producing a colored image.
Claim 6
Dependent Claim
114 words
A color recording process which comprises applying a blanket irradiation of ultraviolet ray or heat to a photochromic recording member having a photosensitive layer containing a photochromic material having a visible light absorption spectrum peak in the colored state present at 400-500 Mu , a photochromic material having a visible light absorption spectrum peak in the colored state present at 500-600 Mu and a photochromic material having a visible light absorption spectrum peak in the colored state present at 600-700 Mu , color developing all of the photochromic materials, selectively eliminating the color of the colored photochromic materials corresponding to each absorption spectrum by applying color light image thereto, thereby producing a colored image.
Claim 7
Dependent Claim
19 words
The color recording process according to claim 3 wherein each photochromic material is uniformly dispersed in the photosensitive layer.
Claim 8
Dependent Claim
30 words
The color recording process according to claim 3 wherein each photochromic material is separately formed in a layer and the resulting three layers are laminated to form a photosensitive layer.
Claim 9
Dependent Claim
36 words
A color recording process according to claim 3 wherein one or more of the reagents contains a photochronic compound and a color control agent which shifts the natural color elimination absorption peak of the photochromic compound.
Claim 10
Dependent Claim
24 words
A color recording process according to claim 6 wherein the color control agent is a film-forming material in which the photochromic compound is distributed.
Claim 11
Dependent Claim
20 words
A color recording process according to claim 6 wherein the color control agent is a solvent for the photochromic compound.
Claim 12
Dependent Claim
63 words
A color recording process according to claim 6 wherein the photochromic compound is distributed in a matrix containing a film-forming material and a solvent for the photochromic compound miscible with the film-forming material and, if desired, an additive compound which acts as a color control agent, all such compounds contributing to the determination of the color elimination absorption peak of the photochronic compound.
Claim 13
Dependent Claim
50 words
A color recording process according to claim 9 containing three or more photochromic reagents of different color elimination absorption peaks in a single photosensitive layer, said components assisting in determining the spread of the resulting color elimination absorption spectrum of the layer so that it substantially covers the visible spectrum.
Claim 14
Dependent Claim
37 words
A color recording process according to claim 3 wherein the photosensitive layer comprises three superposed sub-layers each having a different characteristic color elimination absorption spectrum and cooperating with the other layers to substantially cover the visible spectrum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |