US4060262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record material
Assignee: Standard Register Co
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Filing: 1976-03-24
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Granted: 1977-11-29
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Expires: 1996-03-24
Abstract
Abstract A sensitized record sheet for developing useful color in oily, colorless, chromogenic dye-precursor inks applied thereto. Said record sheet is acid-reacting and bears a liquid ink comprising a non-evaporable liquid organic solvent having dissolved therein an acidic phenolic resin and a lower alkyl gallate.
Inventors
- 👤 Theodore Maierson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:29
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
A record sheet sensitized with an acidic reactant for developing a color in an oily printing liquid containing a colorless, basic, chromogenic dye-precursor applied thereto by expression of droplets retained by pressure-rupturable wall material located in the sensitized sheet or in an overlying sheet placed against the sensitized sheet, wherein at least one surface of the sensitized sheet bears a substantially colorless, liquid ink comprising an acidic phenolic resin and a lower-alkyl gallate with both the resin and the gallate dissolved in a liquid organic solvent having a boiling point above 300° C and a vapor pressure at 100° C of 1 mm. of mercury or less.
Claim 2
Dependent Claim
107 words
A record sheet sensitized with an acidic reactant for developing a color in an oily printing liquid containing a colorless, basic, chromogenic dye-precursor applied thereto by expression of droplets retained by pressure-rupturable wall material located in the sensitized sheet or in an overlying sheet placed against the sensitized sheet, wherein at least one surface of the sensitized sheet bears a substantially colorless, liquid ink comprising an acidic phenolic resin and a lower-alkyl gallate with both the resin and the gallate dissolved in a liquid organic solvent having a boiling point above 300° C and a vapor pressure at 100° C of 1 mm. of mercury or less.
Claim 3
Dependent Claim
14 words
The sensitized sheet of claim 1, wherein the phenolic resin is a phenol-formaldehyde resin.
Claim 4
Dependent Claim
33 words
The sensitized sheet of claim 2, wherein the liquid ink is about 10-50% of a first organic solvent, about 10-50% of a second organic solvent, about 0.5-10% gallate, and about 1-40% phenolic resin.
Claim 5
Dependent Claim
23 words
The sensitized sheet of claim 2, wherein the liquid ink is about 70% organic solvent, about 2% gallate and about 28% phenolic resin.
Claim 6
Dependent Claim
37 words
The sensitized sheet of claim 4, wherein the liquid ink includes about 35% of N-ethyl-o,p-toluenesulfonamide as part of the organic solvent, wherein the gallate is propyl gallate and wherin the phenolic resin is a tertiary-butylphenolformaldehyde condensation product.
Claim 7
Dependent Claim
32 words
The sensitized sheet of claim 5, wherein the liquid ink further includes about 35% of a second organic solvent selected from the group consisting of chlorinated paraffin oil and hydrogenated methyl abietate.
Claim 8
Dependent Claim
13 words
The sensitized sheet of claim 1, wherein the sheet is a paper sheet.
Claim 9
Dependent Claim
21 words
The sensitized sheet of claim 1 wherein the liquid ink includes about 1-4% of lipophilic pyrogenic silica and 10-35% butyl benzoate.
Claim 10
Dependent Claim
79 words
In a method of making a mark on a record sheet by applying an oily, colorless, basic chromogenic ink to a sensitized surface of the record sheet, the improvement wherein the sensitized surface of the record sheet bears a substantially colorless liquid ink comprising an acidic phenolic resin and a lower-alkyl gallate dissolved in a liquid organic solvent having a boiling point above 300° C and a vapor pressure at 100° C of 1 mm of mercury or less.
Claim 11
Dependent Claim
79 words
In a method of making a mark on a record sheet by applying an oily, colorless, basic chromogenic ink to a sensitized surface of the record sheet, the improvement wherein the sensitized surface of the record sheet bears a substantially colorless liquid ink comprising an acidic phenolic resin and a lower-alkyl gallate dissolved in a liquid organic solvent having a boiling point above 300° C and a vapor pressure at 100° C of 1 mm of mercury or less.
Claim 12
Dependent Claim
33 words
The method of claim 9 wherein the record sheet is paper and the liquid ink is about 35% N-ethyl-o,p-toluenesulfonamide, about 35% chlorinated paraffin oil, about 28% tertiary-butylphenol-formaldehyde resin and about 2% propyl gallate.
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) | 1980-11-28 | 1981-05-30 | 1981-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-28 | 1985-05-30 | 1985-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-28 | 1989-05-30 | 1989-11-29 | $7700.00 | Window Closed / Lapsed |