US4465800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink composition for ink jet printing
Assignee: DICK Co 5700 WEST TOUHY AVENUE CHICAGO ILLINOIS 60648 A CORP OF AB
•
Filing: 1983-03-10
•
Granted: 1984-08-14
•
Expires: 2003-03-10
Abstract
Abstract An ink composition for use in ink-jet printing to print images on a substrate, the composition being formulated to include, as the resin component, a phenolic resole resin and, as the primary solvent, a lower alkanol. The composition is also formulated to contain a pigment or soluble basic dye, a resistivity control agent preferably in the form of hydroxylamine hydrochloride, an evaporation retardant, and a modifying resin. The use of a phenolic resole resin which is capable of undergoing cure on evaporation of the solvent provides a printed image having improved adherence to various printing substrates and can be formulated and dissolved in less toxic, lower alkanol solvents.
Inventors
- 👤 Yog R. Bhatia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:33
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
An ink composition for use in ink-jet printing consisting essentially of: (a) 2 to 30% by weight of a phenolic resole resin prepared by condensation of phenol and formaldehyde in the presence of an excess of formaldehyde (b) 0.2 to 7.5% by weight of a soluble triarylmethane basic dye; (c) 0.02 to 5% by weight of a soluble organic amine salt; (d) 0 to 50% by weight of at least one evaporation retardant; (e) up to 30% by weight of water; and the balance being at least one C 1 to C 3 alkanol as a solvent; said ink composition having a specific resistivity of 50 to 3000 ohm-cm, a viscosity at 20° C. of 0.5 to 30cp, and a sonic velocity of 900 to 2000 meters per second.
Claim 2
Dependent Claim
129 words
An ink composition for use in ink-jet printing consisting essentially of: (a) 2 to 30% by weight of a phenolic resole resin prepared by condensation of phenol and formaldehyde in the presence of an excess of formaldehyde (b) 0.2 to 7.5% by weight of a soluble triarylmethane basic dye; (c) 0.02 to 5% by weight of a soluble organic amine salt; (d) 0 to 50% by weight of at least one evaporation retardant; (e) up to 30% by weight of water; and the balance being at least one C 1 to C 3 alkanol as a solvent; said ink composition having a specific resistivity of 50 to 3000 ohm-cm, a viscosity at 20° C. of 0.5 to 30cp, and a sonic velocity of 900 to 2000 meters per second.
Claim 3
Dependent Claim
22 words
A composition as defined in claim 1 which includes up to 1% by weight of a butyral resin as a modifying resin.
Claim 4
Dependent Claim
12 words
A composition as defined in claim 1 wherein the alkanol is methanol.
Claim 5
Dependent Claim
17 words
A composition as defined in claim 1 wherein the evaporation retardant is a lower aliphatic glycol ether.
Claim 6
Dependent Claim
15 words
A composition as defined in claim 1 wherein the soluble organic salt is hydroxylamine hydrochloride.
Claim 7
Dependent Claim
45 words
A composition as defined in claim 1 which includes, as a solvent, up to 50% by weight, based on the weight of the composition, of a lower aliphatic ketone and up to 1% by weight of dimethylamine hydrochloride to reduce the resistivity of the composition.
Claim 8
Dependent Claim
20 words
A composition as defined in claim 1 wherein the composition has a pH within the range of 1 to 7.
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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |