Patent US3801319A successfully refreshed from Google Patents.
US3801319A
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US
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Imaging method utilizing chemical reactivities of photoexcited states of aromatic hydroxy compounds
Assignee: Xerox Corp
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Filing: 1972-06-21
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Granted: 1974-04-02
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Expires: 1992-06-21
Abstract
Abstract An imaging process employing the excited state reactivities of aromatic hydroxy materials to produce a visible image.
Inventors
- 👤 F Saeva
- 👤 D Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:14
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/725
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
23 words
The process of claim 1 wherein the solution contains an aromatic amine in addition to the aromatic hydroxy compound and the nitrite salt.
Claim 2
Dependent Claim
16 words
The process of claim 1 wherein the aromatic hydroxy compound is substituted with an amino radical.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the solution contains a metallic salt in addition to the aromatic hydroxy compound and the nitrite salt.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein the solution has a pH within the range of from 6 to 8.
Claim 5
Dependent Claim
114 words
An imaging process employing the exciteD state reactivities of an aromatic hydroxy material comprising the following steps: a. providing an aromatic hydroxy compound; b. combining said hydroxy compound with an inorganic or aliphatic nitrite salt in aqueous solution, said solution being characterized in that it contains no ingredient which produces acid in the absence of light of a suitable wavelength corresponding to the ultraviolet absorption spectrum of the aromatic hydroxy compound; c. coating a substrate with said solution, and d. exposing said coated substrate to light of a suitable wavelength corresponding to the ultraviolet absorption pattern of the hydroxy aromatic compound in an imagewise fashion to produce a colored image in the exposed areas.
Claim 6
Dependent Claim
15 words
A process according to claim 6 wherein the image is fixed to said coated substrate.
Claim 7
Dependent Claim
15 words
A process according to claim 6 wherein an aromatic amine is included in said solution.
Claim 8
Dependent Claim
17 words
A process according to claim 6 wherein the hydroxy aromatic compound is substituted with an amino radical.
Claim 9
Dependent Claim
16 words
A process according to claim 6 wherein additionally a metallic salt is added to said solution.
Claim 10
Dependent Claim
15 words
A process according to claim 6 wherein said solution has a pH of about 6-8.
Claim 11
Dependent Claim
15 words
A process according to claim 6 wherein a crosslinking agent is included in said solution.
Claim 12
Dependent Claim
120 words
A process for producing a colored image comprising: a. forming a solution by dissolving a hydroxy aromatic compound, a material selected from the group consisting of an inorganic or aliphatic nitrite or mixtures thereof, and a resinous polymer in a solvent, said solution being characterized in that it contains no ingredient which produces acid in the absence of light of a suitable wavelength corresponding to the ultraviolet absorption spectrum of the aromatic hydroxy compound; b. evaporating said solution to form a self-supporting colorless film, and c. exposing said film in an imagewise fashion to light of a suitable wavelength corresponding to the ultraviolet absorption pattern of the hydroxy aromatic compound to thereby produce a colored image in the exposed areas.
Claim 13
Dependent Claim
14 words
A process according to claim 13 wherein said image is fixed in said film.
Claim 14
Dependent Claim
15 words
A process according to claim 13 wherein an aromatic amine is included in said solution.
Claim 15
Dependent Claim
17 words
A process according to claim 13 wherein the hydroxy aromatic compound is substituted with an amino radical.
Claim 16
Dependent Claim
15 words
A process according to claim 13 wherein a metallic salt is added to said solution.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |