US4769459A
Expired / Lapsed
US
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Oxidative imaging
Assignee: Eastman Kodak Co
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Filing: 1986-11-03
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Granted: 1988-09-06
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Expires: 2006-11-03
Abstract
Abstract A radiation-sensitive element capable of recording an image upon image-wise exposure to radiation of selected wavelength, the element comprising, as the image-forming components, an effective amount of a bleachable dye in reactive association with an iodonium ion. Suitable dyes include polymethine dyes having an oxidation potential between 0 and +1 volt.
Inventors
- 👤 Ranjan C. Patel
- 👤 Ian J. Ferguson
- 👤 Herbert J. Pennicott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:40
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
14 words
A compound of either of the formulae: ##STR51## in which M.sup.⊕ represents a cation.
Claim 2
Dependent Claim
14 words
A compound of either of the formulae: ##STR51## in which M.sup.⊕ represents a cation.
Claim 3
Dependent Claim
12 words
A compound having the formula: ##STR52## in which M.sup.⊕ represents a cation.
Claim 4
Dependent Claim
12 words
A compound having the formula: ##STR52## in which M.sup.⊕ represents a cation.
Claim 5
Dependent Claim
12 words
A compound having the formula: ##STR53## in which M.sup.⊕ represents a cation.
Claim 6
Dependent Claim
12 words
A compound having the formula: ##STR53## in which M.sup.⊕ represents a cation.
Claim 7
Dependent Claim
12 words
The compound of claim 2 in which M.sup.⊕ is an iodonium ion.
Claim 8
Dependent Claim
21 words
The compound of claim 3 in which M.sup.⊕ is selected from the group consisting of Li.sup.⊕, Na.sup.⊕, K.sup.⊕, and quaternary ammonium.
Claim 9
Dependent Claim
12 words
The compound of claim 3 in which M.sup.⊕ is an iodonium ion.
Claim 10
Dependent Claim
31 words
A compound having the formula: ##STR54## in which M + represents a cation selected from the group consisting of Li + , Na + , K + , and quaternary ammoniums.
Claim 11
Dependent Claim
31 words
A compound having the formula: ##STR54## in which M + represents a cation selected from the group consisting of Li + , Na + , K + , and quaternary ammoniums.
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) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |