US4470058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive recording sheet
Assignee: WTA Inc
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Filing: 1982-06-28
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Granted: 1984-09-04
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Expires: 2002-06-28
Abstract
Abstract A two-coat record sheet material is disclosed. This record sheet material comprises a base coat comprising an oil-soluble phenol-formaldehyde novolak resin and a topcoat comprising substantially nonreactant pigment material, but no color developer material. The nonreactive topcoat eliminates the accumulation of contaminants on the fuser roll of copier/duplicators produced by prior art record sheet material.
Inventors
- 👤 Jerome R. Bodmer
- 👤 John H. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:27
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
A pressure-sensitive record sheet material comprising a support sheet having bound on the surface thereof a first composition comprising a color developing material selected from the group consisting of an oil-soluble, phenol-formaldehyde novolak resin and an oil-soluble metal salt of a phenol-formaldehyde novolak resin, and a second composition comprising substantially nonreactant pigment material bound on the surface of the said first composition.
Claim 2
Dependent Claim
62 words
A pressure-sensitive record sheet material comprising a support sheet having bound on the surface thereof a first composition comprising a color developing material selected from the group consisting of an oil-soluble, phenol-formaldehyde novolak resin and an oil-soluble metal salt of a phenol-formaldehyde novolak resin, and a second composition comprising substantially nonreactant pigment material bound on the surface of the said first composition.
Claim 3
Dependent Claim
21 words
The record sheet of claim 1 wherein the color developing material is an oil-soluble metal salt of a phenol-formaldehyde novolak resin.
Claim 4
Dependent Claim
15 words
The record sheet of claim 2 wherein the metal of the metal salt is zinc.
Claim 5
Dependent Claim
17 words
The record sheet of claim 1 or 3 wherein the substantially nonreactant pigment material is kaolin clay.
Claim 6
Dependent Claim
26 words
The record sheet of claim 4 wherein the nonreactant pigment further includes a material selected from the group consisting of calcined kaolin clay and calcium carbonate.
Claim 7
Dependent Claim
60 words
A record material sensitized to receive and to convert to a colored state solutions of colorless chromogenic material applied to it, including, bound on the surface of a supporting web, a first composition comprising an oil-soluble metal salt of a phenol-formaldehyde novolak resin, and a second composition, comprising substantially nonreactant pigment material, bound on the surface of said first composition.
Claim 8
Dependent Claim
60 words
A record material sensitized to receive and to convert to a colored state solutions of colorless chromogenic material applied to it, including, bound on the surface of a supporting web, a first composition comprising an oil-soluble metal salt of a phenol-formaldehyde novolak resin, and a second composition, comprising substantially nonreactant pigment material, bound on the surface of said first composition.
Claim 9
Dependent Claim
32 words
The record member of claim 6 in which the substantially nonreactant pigment material includes kaolin clay and a second material selected from the group consisting of calcium carbonate and calcined kaolin clay.
Claim 10
Dependent Claim
14 words
The record member of claim 7 in which said second material is calcium carbonate.
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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |