Patent EP0537733A2 successfully refreshed from Google Patents.
Patent US4460671A successfully refreshed from Google Patents.
US4460671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press fixing type electrostatic recording material
Assignee: New Oji Paper Co Ltd
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Filing: 1982-09-30
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Granted: 1984-07-17
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Expires: 2002-09-30
Abstract
Abstract A press-fixing type electrostatic recording material having an excellent recording property comprises a substrate having a low surface resistivity of 109 ohms or less and an electrostatic recording resinous layer which is formed on at least one surface of the substrate and which comprises a polyester resin and an anhydrous aluminum silicate uniformly mixed with the polyester resin.
Inventors
- 👤 Tokuro Yasuda
- 👤 Akinori Oka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/0202; G03G5/0217; G03G5/0205; G03G5/0211; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/256
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A method for forming and fixing toner images on an electrostatic recording material, comprising forming electrostatic latent images on an electrostatic recording material which comprises a substrate having a low surface resistivity of 10 9 ohms or less and an electrostatic recording resinous layer formed on at least one surface of said substrate and comprising a polyester resin and an anhydrous aluminum silicate which is amorphous or in the form of thin flat plates or thin flakes and which is uniformly mixed with said polyester resin, the ratio in weight of said polyester resin to said anhydrous aluminum silicate being in the range of from 80:20 to 50:50 wherein said electrostatic recording resinous layer is provided with a finely rugged structure on the surface thereof; developing said latent images with a toner; and press-fixing the resultant toner images on the surface of said electrostatic recording resinous layer, under pressure.
Claim 2
Independent Claim
149 words
A method for forming and fixing toner images on an electrostatic recording material, comprising forming electrostatic latent images on an electrostatic recording material which comprises a substrate having a low surface resistivity of 10 9 ohms or less and an electrostatic recording resinous layer formed on at least one surface of said substrate and comprising a polyester resin and an anhydrous aluminum silicate which is amorphous or in the form of thin flat plates or thin flakes and which is uniformly mixed with said polyester resin, the ratio in weight of said polyester resin to said anhydrous aluminum silicate being in the range of from 80:20 to 50:50 wherein said electrostatic recording resinous layer is provided with a finely rugged structure on the surface thereof; developing said latent images with a toner; and press-fixing the resultant toner images on the surface of said electrostatic recording resinous layer, under pressure.
Claim 3
Dependent Claim
22 words
The method as claimed in claim 1, wherein said substrate has a surface resistivity of from 10 5 to 10 9 ohms.
Claim 4
Dependent Claim
25 words
The method as claimed in claim 1, wherein said polyester is a high molecular weight, multi-component linear copolyester exhibiting a high solubility in a solvent.
Claim 5
Dependent Claim
21 words
The method as claimed in claim 1, wherein said anhydrous aluminum silicate has an average particle size of about 1.5 microns.
Claim 6
Dependent Claim
36 words
The method as claimed in claim 1, wherein said anhydrous aluminum silicate is added with an additional pigment in a ratio in weight of said anhydrous aluminum silicate to said additional pigment of 50:50 or more.
Claim 7
Dependent Claim
34 words
The method as claimed in claim 1, wherein said polyester resin is added with an additional resin in a ratio in weight of said polyester resin to said additional resin of 50:50 or more.
References Cited (Backward Citations)
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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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |