US4656087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric imaging sheet through elimination of moisture induced image defects
Assignee: GRAPHICS JAMES RIVER
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Filing: 1986-01-10
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Granted: 1987-04-07
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Expires: 2006-01-10
Abstract
Abstract Provided is a dielectric imaging sheet useful in electrographic imaging, wherein a particulate solid incorporated into the dielectric coating has been treated with an acyloxy or amino terminated polysiloxane. Short-chain polysiloxanes, e.g., 3 to 8 siloxane units, are preferred as the treating agent, with the amino group being preferably lower alkyl substituted and the acyloxy group being preferably lower acyloxy. Use of the specially treated particulate solid reduces moisture induced imaging defects upon using the dielectric sheet in electrographic imaging.
Inventors
- 👤 Ronald P. Lubianez
- 👤 Everett W. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:58
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6597; C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3081; G03G5/00; G03G5/02; G03G5/0202; G03G5/0205; G03G5/0211; G03G5/0217; C01; C01P; C01P2002/00; C01P2002/02; C01P2006/00; C01P2006/90; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00443; G03G2215/00518; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/258; Y10T428/259; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2998; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
36 words
A dielectric sheet useful in electrographic imaging, wherein the improvement comprises the sheet having a particulate solid in the dielectric coating, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane.
Claim 2
Dependent Claim
36 words
A dielectric sheet useful in electrographic imaging, wherein the improvement comprises the sheet having a particulate solid in the dielectric coating, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane.
Claim 3
Dependent Claim
13 words
The dielectric sheet of claim 1, wherein the polysiloxane is a short-chain polysiloxane.
Claim 4
Dependent Claim
18 words
The dielectric sheet of claim 2, wherein the polysiloxane is comprised of from 3 to 6 siloxane units.
Claim 5
Dependent Claim
14 words
The dielectric sheet of claim 1, wherein the polysiloxane is an acyloxy terminated polysiloxane.
Claim 6
Dependent Claim
14 words
The dielectric sheet of claim 4, wherein the acyloxy terminated polysiloxane is lower acyloxy.
Claim 7
Dependent Claim
15 words
The dielectric sheet of claim 5, wherein the acyloxy terminated polysiloxane is an acetoxy polysiloxane.
Claim 8
Dependent Claim
14 words
The dielectric sheet of claim 1, wherein the polysiloxane is an amine terminated polysiloxane.
Claim 9
Dependent Claim
17 words
The dielectric sheet of claim 7, wherein the polysiloxane is a lower alkyl substituted amine terminated polysiloxane.
Claim 10
Dependent Claim
14 words
The dielectric sheet of claim 8, wherein the polysiloxane is α, ω-dimethylamino polydimethyl siloxane.
Claim 11
Dependent Claim
12 words
The dielectric sheet of claim 1, wherein the particulate solid comprises silica.
Claim 12
Dependent Claim
30 words
A dielectric sheet useful in electrographic imaging, the sheet comprising a particulate solid comprised of silica, which solid has been treated with an acetoxy polysiloxane or α, ω-dimethylamino polydimethyl siloxane.
Claim 13
Dependent Claim
30 words
A dielectric sheet useful in electrographic imaging, the sheet comprising a particulate solid comprised of silica, which solid has been treated with an acetoxy polysiloxane or α, ω-dimethylamino polydimethyl siloxane.
Claim 14
Dependent Claim
18 words
The dielectric sheet of claim 11, wherein the particulate solid has been treated with α, ω-dimethylamino polydimethyl siloxane.
Claim 15
Dependent Claim
37 words
An electrographic imaging process employing a dielectric sheet, wherein the improvement comprises a sheet having a particulate solid in the dielectric coating, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane.
Claim 16
Dependent Claim
37 words
An electrographic imaging process employing a dielectric sheet, wherein the improvement comprises a sheet having a particulate solid in the dielectric coating, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane.
Claim 17
Dependent Claim
14 words
The electrographic imaging process of claim 13, wherein the polysiloxane is a short-chain polysiloxane.
Claim 18
Dependent Claim
19 words
The electrographic imaging process of claim 14, wherein the polysiloxane is comprised of from 3 to 6 siloxane units.
Claim 19
Dependent Claim
15 words
The electrographic imaging process of claim 13, wherein the polysiloxane is an acyloxy terminated polysiloxane.
Claim 20
Dependent Claim
15 words
The electrographic imaging process of claim 16, wherein the acyloxy terminated polysiloxane is lower acyloxy.
Claim 21
Dependent Claim
16 words
The electrographic imaging process of claim 17, wherein the acyloxy terminated polysiloxane is an acetoxy polysiloxane.
Claim 22
Dependent Claim
15 words
The electrographic imaging process of claim 13, wherein the polysiloxane is an amine terminated polysiloxane.
Claim 23
Dependent Claim
18 words
The electrographic imaging process of claim 19, wherein the polysiloxane is a lower alkyl substituted amine terminated polysiloxane.
Claim 24
Dependent Claim
15 words
The electrographic imaging process of claim 20, wherein the polysiloxane is α, ω-dimethylamino polydimethyl siloxane.
Claim 25
Dependent Claim
13 words
The electrographic imaging process of claim 13, wherein the particulate solid comprises silica.
Claim 26
Dependent Claim
57 words
A process for making a dielectric imaging sheet having a dielectric coating which is useful in electrographic imaging, wherein the improvment comprises incorporating a particulate solid into a dielectric coating formulation, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane; and then coating the dielectric imaging sheet with the dielectric coating.
Claim 27
Dependent Claim
57 words
A process for making a dielectric imaging sheet having a dielectric coating which is useful in electrographic imaging, wherein the improvment comprises incorporating a particulate solid into a dielectric coating formulation, with the particulate solid having been treated with an acyloxy or an amine terminated polysiloxane; and then coating the dielectric imaging sheet with the dielectric coating.
Claim 28
Dependent Claim
38 words
The process of claim 23, wherein a slurry of the particulate solid, polysiloxane and a solvent is introduced directly into a coating lacquer, which coating lacquer is then coated onto the dielectric sheet as the dielectric coating formulation.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |