US4803119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ink compositions for impact typewriter ribbons
Assignee: Xerox Corp
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Filing: 1987-06-01
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Granted: 1989-02-07
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Expires: 2007-06-01
Abstract
Abstract Disclosed is an ink coating composition for impact printing ribbons comprised of a sponge with an ink composition dispersed therein, which ink is comprised of pigment particles and a dimer acid.
Inventors
- 👤 James M. Duff
- 👤 Stephan Drappel
- 👤 James D. Mayo
- 👤 Richard G. Crystal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:58
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249996; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
29 words
An impact printing ribbon comprised of a supporting substrate and a sponge with an ink composition dispersed therein, which ink is comprised of pigment particles and a dimer acid.
Claim 2
Dependent Claim
29 words
An impact printing ribbon comprised of a supporting substrate and a sponge with an ink composition dispersed therein, which ink is comprised of pigment particles and a dimer acid.
Claim 3
Dependent Claim
34 words
An impact printing ribbon in accordance with claim 1 wherein the sponge is a polymer selected from the group consisting of polystyrene, polyacrylates, polyesters, polyvinyl chloride-polyvinyl acetate copolymers, polyamides, and polyvinyl acetate polystyrene copolymers.
Claim 4
Dependent Claim
30 words
An impact printing ribbon in accordance with claim 2 wherein the polymer is present in an amount of from about 25 percent by weight to about 45 percent by weight.
Claim 5
Dependent Claim
16 words
An impact printing ribbon in accordance with claim 1 wherein the pigment particles are carbon black.
Claim 6
Dependent Claim
31 words
An impact printing ribbon in accordance with claim 1 wherein the pigment particles are present in an amount of from about 5 to about 20 percent by weight of the ink.
Claim 7
Dependent Claim
31 words
An impact printing ribbon in accordance with claim 1 wherein the pigment particles are present in an amount of from about 10 percent by weight to about 15 percent by weight.
Claim 8
Dependent Claim
31 words
An impact printing ribbon in accordance with claim 1 wherein the dimer acid is present in an amount of from about 10 percent by weight to about 25 percent by weight.
Claim 9
Dependent Claim
25 words
An impact printing ribbon in accordance with claim 1 wherein the viscosity of the ink composition is from about 5,000 centipoise to about 25,000 centipoise.
Claim 10
Dependent Claim
29 words
An impact printing ribbon in accordance with claim 1 wherein the pigment particles are selected from the group consisting of red, brown, green, cyan, magenta, yellow, and mixtures thereof.
Claim 11
Dependent Claim
16 words
An impact printing ribbon in accordance with claim 1 wherein the ink further includes therein dyes.
Claim 12
Dependent Claim
34 words
An impact printing ribbon in accordance with claim 10 wherein the dye is present in an amount of from about 5 percent by weight to about 20 percent by weight of the ink components.
Claim 13
Dependent Claim
18 words
An impact printing ribbon in accordance with claim 1 wherein the ink composition further includes therein dispersing agents.
Claim 14
Dependent Claim
31 words
An impact printing ribbon in accordance with claim 12 wherein the dispersing agent is present in an amount of from about 1 percent by weight to about 10 percent by weight.
Claim 15
Dependent Claim
16 words
An impact printing ribbon in accordance with claim 12 wherein the dispersant is a metallic salt.
Claim 16
Dependent Claim
18 words
An impact printing ribbon in accordance with claim 1 wherein the ink composition further includes therein polyalkylene glycols.
Claim 17
Dependent Claim
21 words
An impact printing ribbon in accordance with claim 1 wherein the ink includes therein a mixture of dimer and trimer acids.
Claim 18
Dependent Claim
14 words
An impact printing ribbon in accordance with claim 15 further including therein a dye.
Claim 19
Dependent Claim
27 words
An impact printing ribbon in accordance with claim 21 wherein the dye is present in an amount of from about 20 to about 40 percent by weight.
Claim 20
Dependent Claim
16 words
An impact printing ribbon in accordance with claim 1 wherein the supporting substrate comprises a polyester.
Claim 21
Dependent Claim
30 words
An impact printing ribbon in accordance with claim 1 wherein the sponge containing the ink is present in a layer of from about 0.5 to about 1.5 mils in thickness.
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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |