US5116666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic recording film
Assignee: Fujifilm Holdings Corp
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Filing: 1990-07-23
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Granted: 1992-05-26
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Expires: 2010-07-23
Abstract
Abstract An electrostatic recording film comprising a insulating film, a conductive layer and a dielectric layer laminated in this order, wherein said dielectric layer consisting essentially of a polymer binder, insulating grains and conductive powders and said conductive powders are fibrous conductive powders, is disclosed. The electrostatic recording film of the present invention makes it possible to give a clear and sharp image suffering from little line cutout or spotting.
Inventors
- 👤 Takeshi Konno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0211; G03G5/0217; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/259; Y10T428/26; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
An electrostatic recording film comprising an insulating film, a conductive layer and a dielectric layer laminated in this order, wherein said dielectric layer consists essentially of a polymer binder comprised of a thermoplastic resin or a hardening resin having a volume resistance of 10 12 Ω.cm or above, insulating grains having a volume resistance of 10 8 Ω.cm or above and conductive powders, and wherein said conductive powders are fibrous conductive powders, and the thickness of the dielectric layer, excluding the insulating grains, is from 1 to 10 μm.
Claim 2
Dependent Claim
89 words
An electrostatic recording film comprising an insulating film, a conductive layer and a dielectric layer laminated in this order, wherein said dielectric layer consists essentially of a polymer binder comprised of a thermoplastic resin or a hardening resin having a volume resistance of 10 12 Ω.cm or above, insulating grains having a volume resistance of 10 8 Ω.cm or above and conductive powders, and wherein said conductive powders are fibrous conductive powders, and the thickness of the dielectric layer, excluding the insulating grains, is from 1 to 10 μm.
Claim 3
Dependent Claim
27 words
An electrostatic recording film as claimed in claim 1, wherein the weight ratio of said polymer binder to said fibrous conductive powder ranges from 100/0.1 to 100/40.
Claim 4
Dependent Claim
55 words
An electrostatic recording film as claimed in claim 1, wherein the long axis of said conductive fiber is 1/3 to 3 times as long as the diameter of said insulating grain and the short axis of said fibrous conductive powder is not more than 0.1 times as long as the diameter of said insulating grain.
Claim 5
Dependent Claim
17 words
An electrostatic recording film as claimed in claim 1, wherein said insulating grains comprises organic polymer grains.
Claim 6
Dependent Claim
18 words
An electrostatic recording film as claimed in claim 1, wherein the back of said insulating film is matted.
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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |