US5576162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging element having an electrically-conductive layer
Assignee: Eastman Kodak Co
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Filing: 1996-01-18
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Granted: 1996-11-19
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Expires: 2016-01-18
Abstract
Abstract Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder. Use of carbon nanofibers provides a controlled degree of electrical conductivity and beneficial chemical, physical and optical properties which adapt the electrically-conductive layer for such purposes as providing protection against static or serving as an electrode which takes part in an image-forming process.
Inventors
- 👤 Kimon Papadopoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/853; G03C1/7614; G03C1/795; G03C1/7954; G03C1/81; G03C2200/00; G03C2200/10; Y; Y10; Y10S; Y10S977/00; Y10S977/70; Y10S977/734; Y10S977/742; Y10S977/753; Y10S977/84; Y10S977/842; Y10S977/843; Y10S977/902; Y10S977/932
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
35 words
An imaging element for use in an image-forming process; said imaging element comprising a support, an image-forming layer, and an electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 2
Dependent Claim
35 words
An imaging element for use in an image-forming process; said imaging element comprising a support, an image-forming layer, and an electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 3
Dependent Claim
30 words
An imaging element as claimed in claim 1, wherein the weight ratio of carbon nanofibers to film-forming binder is in the range of 0.01 to 1 to 100 to 1.
Claim 4
Dependent Claim
30 words
An imaging element as claimed in claim 1, wherein the weight ratio of carbon nanofibers to film-forming binder is in the range of 0.1 to 1 to 10 to 1.
Claim 5
Dependent Claim
30 words
An imaging element as claimed in claim 1, wherein the weight ratio of carbon nanofibers to film-forming binder is in the range of 0.5 to 2 to 2 to 1.
Claim 6
Dependent Claim
20 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a diameter of less than 500 nanometers.
Claim 7
Dependent Claim
20 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a diameter of less than 200 nanometers.
Claim 8
Dependent Claim
20 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a diameter of less than 50 nanometers.
Claim 9
Dependent Claim
22 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a length to diameter ratio of at least 20.
Claim 10
Dependent Claim
22 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a length to diameter ratio of at least 50.
Claim 11
Dependent Claim
21 words
An imaging element as claimed in claim 1, wherein said carbon nanofibers have a powder resistivity of less than one ohm-cm.
Claim 12
Dependent Claim
28 words
An imaging element as claimed in claim 1, wherein the coverage of said carbon nanofibers, based on weight of carbon, is from 1 to 300 mg/m 2 .
Claim 13
Dependent Claim
28 words
An imaging element as claimed in claim 1, wherein the coverage of said carbon nanofibers, based on weight of carbon, is from 2 to 50 mg/m 2 .
Claim 14
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said binder is a water-soluble polymer.
Claim 15
Dependent Claim
13 words
An imaging element as claimed in claim 1, wherein said binder is gelatin.
Claim 16
Dependent Claim
14 words
An imaging element as claimed in claim 1, wherein said binder is a polyalkoxysilane.
Claim 17
Dependent Claim
14 words
An imaging element as claimed in claim 1, wherein said binder is a polyesterionomer.
Claim 18
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said binder is a polyurethane resin.
Claim 19
Dependent Claim
21 words
An imaging element as claimed in claim 1, wherein said support is a poly(ethylene terephthalate) film or a poly(ethylene naphthalate) film.
Claim 20
Dependent Claim
38 words
An imaging element as claimed in claim 1, wherein said support is a transparent polymeric film, said image-forming layer is comprised of silver halide grains dispersed in gelatin, and said film-forming binder in said electrically-conductive layer is gelatin.
Claim 21
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said element is a photographic film.
Claim 22
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said element is a photographic paper.
Claim 23
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said element is an electrostatographic element.
Claim 24
Dependent Claim
15 words
An imaging element as claimed in claim 1, wherein said element is a photothermographic element.
Claim 25
Dependent Claim
23 words
An imaging element as claimed in claim 1, wherein said element is an element adapted for use in a laser toner fusion process.
Claim 26
Dependent Claim
16 words
An imaging element as claimed in claim 1, wherein said element is a thermal-dye-transfer receiver element.
Claim 27
Dependent Claim
44 words
An imaging element for use in an image-forming process; said imaging element comprising a support, an image-forming layer, a transparent magnetic layer comprising magnetic particles dispersed in a film-forming binder, and an electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 28
Dependent Claim
44 words
An imaging element for use in an image-forming process; said imaging element comprising a support, an image-forming layer, a transparent magnetic layer comprising magnetic particles dispersed in a film-forming binder, and an electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 29
Dependent Claim
44 words
A photographic film comprising: (1) a support; (2) an electrically-conductive layer which serves as an antistatic layer overlying said support; and (3) a silver halide emulsion layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 30
Dependent Claim
44 words
A photographic film comprising: (1) a support; (2) an electrically-conductive layer which serves as an antistatic layer overlying said support; and (3) a silver halide emulsion layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 31
Dependent Claim
59 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; (3) an electrically-conductive layer which serves as an antistatic layer on the opposite side of said support; and (4) a curl control layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 32
Dependent Claim
59 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; (3) an electrically-conductive layer which serves as an antistatic layer on the opposite side of said support; and (4) a curl control layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 33
Dependent Claim
51 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; and (3) an electrically-conductive layer which serves as an antistatic backing layer on the opposite side of said support; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 34
Dependent Claim
51 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; and (3) an electrically-conductive layer which serves as an antistatic backing layer on the opposite side of said support; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 35
Dependent Claim
59 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; (3) an electrically-conductive layer which serves as an antistatic layer on the opposite side of said support; and (4) an abrasion-resistant backing layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
Claim 36
Dependent Claim
59 words
A photographic film comprising: (1) a support; (2) a silver halide emulsion layer on one side of said support; (3) an electrically-conductive layer which serves as an antistatic layer on the opposite side of said support; and (4) an abrasion-resistant backing layer overlying said electrically-conductive layer; said electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |