US4089547A
Expired / Lapsed
US
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Manifold receptor sheets and processes therefor
Assignee: Reprographic Materials Inc
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Filing: 1976-07-21
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Granted: 1978-05-16
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Expires: 1996-07-21
Abstract
Abstract Manifold receptor sheets for use with conventional donor sheets, the receptor sheet comprising a substrate having deposited thereon a coating comprising hydrophilic fumed silicon dioxide, together with processes for producing such receptor sheets.
Inventors
- 👤 Carl Brynko
- 👤 Stephen P. Grzech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; B41M5/1555; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/25; Y10T428/259; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/28; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A manifold receptor sheet comprising a substrate coated on at least one surface with fumed hydrophilic silicon dioxide particles having an acid pH and a diameter ranging from about 7 to 14 nanometers and a surface area from about 200 m 2 /g to 400 m 2 /g and capable of reacting with a chromogenic material to produce a colored visible image, and an adhesive for maintaining the particles on the surface, the silicon dioxide particles comprising from 50 to 95 percent by weight of the coating.
Claim 2
Dependent Claim
87 words
A manifold receptor sheet comprising a substrate coated on at least one surface with fumed hydrophilic silicon dioxide particles having an acid pH and a diameter ranging from about 7 to 14 nanometers and a surface area from about 200 m 2 /g to 400 m 2 /g and capable of reacting with a chromogenic material to produce a colored visible image, and an adhesive for maintaining the particles on the surface, the silicon dioxide particles comprising from 50 to 95 percent by weight of the coating.
Claim 3
Dependent Claim
16 words
A sheet according to claim 1 wherein substantially one entire surface of the substrate is coated.
Claim 4
Dependent Claim
11 words
A sheet according to claim 1 wherein the substrate is paper.
Claim 5
Dependent Claim
12 words
A sheet according to claim 1 wherein the adhesive is a polymer.
Claim 6
Dependent Claim
21 words
A sheet according to claim 1 wherein the weight of the coating is from 0.3 to about 3.0 pounds per ream.
Claim 7
Dependent Claim
24 words
A sheet according to claim 1 wherein rupturable capsules containing a chromogenic material are coated directly onto the coating of fumed silicon dioxide particles.
Claim 8
Dependent Claim
28 words
A process for preparing a sheet according to claim 1 wherein a solution of an adhesive having dispersed therein fumed silicon dioxide particles is coated onto a substrate.
Claim 9
Dependent Claim
114 words
A manifold set for replicating written symbols which set comprises a substrate coated on at least a portion of one surface with fumed silicon dioxide particles having an acid pH and a diameter ranging from 7 to 14 nanometers and a surface area of from about 200 m 2 /g to 400 m 2 /g and capable of reacting with a chromogenic material to produce a colored visible image and an adhesive for maintaining the particles on the surface of the substrate, and in contact with the coating a layer of pressure rupturable capsules containing a leuco dye-forming material, the silicon dioxide particles comprising from 50 to 95 percent by weight of the coating.
Claim 10
Dependent Claim
114 words
A manifold set for replicating written symbols which set comprises a substrate coated on at least a portion of one surface with fumed silicon dioxide particles having an acid pH and a diameter ranging from 7 to 14 nanometers and a surface area of from about 200 m 2 /g to 400 m 2 /g and capable of reacting with a chromogenic material to produce a colored visible image and an adhesive for maintaining the particles on the surface of the substrate, and in contact with the coating a layer of pressure rupturable capsules containing a leuco dye-forming material, the silicon dioxide particles comprising from 50 to 95 percent by weight of the coating.
Claim 11
Dependent Claim
35 words
A set according to claim 8 wherein a plurality of substrates are in association so that the rupturable capsules on a first sheet are contiguous to the fumed silicon dioxide coating on a second sheet.
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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) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |