US6479228B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scratch resistant layer containing electronically conductive polymer for imaging elements
Assignee: Eastman Kodak Co
•
Filing: 2000-12-01
•
Granted: 2002-11-12
•
Expires: 2020-12-01
Abstract
Abstract The present invention can relate to an imaging element including a support, an image-forming layer superposed on the support, and an outermost scratch resistant antistatic layer superposed on the support. The scratch resistant layer may include a polymer having a modulus greater than 100 MPa measured at 20° C., a filler particle with the proviso that the filler particle is not an electronically conductive crystalline metal oxide or a compound oxide thereof, and an electronically conducting polymer. The volume ratio of the polymer to the filler particle may be between 70:30 and 40:60 and the electronically conducting polymer can be present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
Inventors
- 👤 Dabasis Majumdar
- 👤 Charles Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:51
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G5/14708; G03G5/14713; G03G5/14795; G03C; G03C1/00; G03C1/76; G03C1/7614; G03G5/14747; G03G5/14769; B; B41; B41M; B41M2205/00; B41M2205/40; G03C1/85; G03C2001/7628; G03C7/00; G03C7/30; G03C7/3022; G03C2007/3027
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
117 words
An imaging element comprising: a support; an image-forming layer superposed on the support; and an outermost scratch resistant antistatic layer superposed on the support, the scratch resistant layer comprising a polymer having a modulus greater than 100 MPa measured at 20° C., at least one filler particle with the proviso that the filler particle is not an electronically conductive crystalline metal oxide or a compound oxide thereof, and an electronically conducting polymer; wherein the volume ratio of the polymer to the filler particle is between 70:30 and 40:60 and the electronically conducting polymer is present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
Claim 2
Dependent Claim
117 words
An imaging element comprising: a support; an image-forming layer superposed on the support; and an outermost scratch resistant antistatic layer superposed on the support, the scratch resistant layer comprising a polymer having a modulus greater than 100 MPa measured at 20° C., at least one filler particle with the proviso that the filler particle is not an electronically conductive crystalline metal oxide or a compound oxide thereof, and an electronically conducting polymer; wherein the volume ratio of the polymer to the filler particle is between 70:30 and 40:60 and the electronically conducting polymer is present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
Claim 3
Dependent Claim
17 words
The imaging element according to claim 1 , wherein the outermost scratch resistant antistatic layer is transparent.
Claim 4
Dependent Claim
21 words
The imaging element according to claim 1 , wherein the filler particle has a refractive index of about 2.5 or less.
Claim 5
Dependent Claim
21 words
The imaging element according to claim 1 , wherein the filler particle has a refractive index of about 2.1 or less.
Claim 6
Dependent Claim
27 words
The imaging element according to claim 1 , wherein the polymer having a modulus greater than 100 MPa has a tensile elongation to break greater than 50%.
Claim 7
Dependent Claim
21 words
The imaging element of claim 1 wherein the filler particle comprises silica, tin oxide, titanium dioxide, mica, clay, alumina, or zirconia.
Claim 8
Dependent Claim
23 words
The imaging element of claim 1 wherein the filler particle comprises a phyllosilicate, an illite, a hydrotalcite, a double hydroxide, or mixtures thereof.
Claim 9
Dependent Claim
13 words
The imaging element of claim 7 wherein the filler particle is a phyllosilicate.
Claim 10
Dependent Claim
13 words
The imaging element of claim 8 wherein the phyllosilicate is a smetic clay.
Claim 11
Dependent Claim
52 words
The imaging element of claim 8 wherein the phyllosilicate is a sodium montmorillonite, a magnesium montmorillonite, a calcium montmorillonite, a nontronite, a beidellite, a volkonskoite, a hectorite, a saponite, a sauconite, a sobockite, a stevensite, a svinfordite, a vermiculite, a magadiite, a kenyaite, a pyrophyllite, a talc, mica, kaolinite or mixtures thereof.
Claim 12
Dependent Claim
30 words
The imaging element of claim 7 wherein the filler particle is a double hydroxide of the formula Mg 6 Al 3.4 (OH) 18.8 (CO 3 ) 1.7 H 2 O.
Claim 13
Dependent Claim
21 words
The imaging element of claim 1 wherein the filler particle has a particle size less than or equal to 100 nm.
Claim 14
Dependent Claim
19 words
The imaging element of claim 1 wherein the filler particle comprises a non-crystalline colloidal silica or a smectite clay.
Claim 15
Dependent Claim
39 words
The imaging element of claim 1 wherein the electronically conducting polymer further comprises a substituted thiophene-containing polymer, an unsubstituted thiophene-containing polymer, a substituted aniline-containing polymer, an unsubstituted aniline-containing polymer, polyisothianapthene, a substituted pyrrole-containing polymer, or an unsubstituted pyrrole-containing polymer.
References Cited (Backward Citations)
US4070189A
Cited
US4275103A
Cited
US4416963A
Cited
US4495276A
Cited
US4431764A
Cited
US4418141A
Cited
US4394441A
Cited
US4571361A
Cited
US4731408A
Cited
US4880703A
Cited
US4987042A
Cited
US4999276A
Cited
US5312681A
Cited
US5122445A
Cited
US5628932A
Cited
US5585037A
Cited
US5093439A
Cited
US5300575A
Cited
JPH0455492A
Cited
US5273822A
Cited
US5294525A
Cited
US5403467A
Cited
US5370981A
Cited
US5350448A
Cited
US5372924A
Cited
US5354613A
Cited
US5443944A
Cited
US5391472A
Cited
EP0602713A1
Cited
US5382494A
Cited
US5340676A
Cited
US5459021A
Cited
US5368995A
Cited
US5575898A
Cited
US5466567A
Cited
US5484694A
Cited
US5536627A
Cited
US5679505A
Cited
US5716055A
Cited
WO1997038358A1
Cited
US5726001A
Cited
US5674654A
Cited
US5665498A
Cited
US5700623A
Cited
US5955250A
Cited
US6114079A
Cited
US6187522B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-11-11 | 2006-05-13 | 2006-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-11 | 2010-05-13 | 2010-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-11 | 2014-05-13 | 2014-11-12 | $7700.00 | Window Closed / Lapsed |