US4153467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of ink jet printing
Assignee: Dai Nippon Toryo Co Ltd
•
Filing: 1976-11-24
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Granted: 1979-05-08
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Expires: 1996-11-24
Abstract
Abstract A method of ink jet printing by injecting ink through a fine nozzle and electrostatically deflecting the ink particles to print a symbol corresponding to a predetermined matrix, the improvement wherein said ink comprises a non-aqueous ink comprising a coloring agent and a mixture of formamide and an aliphatic monohydric alcohol.
Inventors
- 👤 Hirofumi Yano
- 👤 Noriaki Okamura
- 👤 Tsunehiko Toyoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
In a method of ink jet printing which comprises injecting ink through a fine nozzle and electrostatically deflecting the resulting ink particles to print a symbol which corresponds to a predetermined matrix, the improvement wherein said ink is a non-aqueous ink which comprises a coloring agent and a mixture of formamide and an C 1 -C 8 aliphatic monohydric monovalent alcohol, wherein the weight ratio of formamide to aliphatic alcohol is 40-80 to 60-20.
Claim 2
Dependent Claim
74 words
In a method of ink jet printing which comprises injecting ink through a fine nozzle and electrostatically deflecting the resulting ink particles to print a symbol which corresponds to a predetermined matrix, the improvement wherein said ink is a non-aqueous ink which comprises a coloring agent and a mixture of formamide and an C 1 -C 8 aliphatic monohydric monovalent alcohol, wherein the weight ratio of formamide to aliphatic alcohol is 40-80 to 60-20.
Claim 3
Dependent Claim
33 words
The ink jet printing method of claim 1, wherein the total amount of the mixture of formamide and aliphatic monohydric alcohol in said ink is greater than 10 wt.% of the total diluent.
Claim 4
Dependent Claim
37 words
The ink jet printing method of claim 1, wherein said ink further contains a vehicle selected from the group consisting of drying oils, semi-drying oils, non-drying oil, aliphatic acids and esters thereof, dicarboxylic esters and polyhydric alcohols.
Claim 5
Dependent Claim
31 words
The ink jet printing method of claim 1, wherein said ink further contains a dye selected from the group consisting of direct dyes, acid dyes, basic dyes and oil soluble dyes.
Claim 6
Dependent Claim
54 words
The ink jet printing method of claim 1, wherein said C 1 -C 8 aliphatic monohydric monovalent alcohol is selected from the group consisting of methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, n-amyl alcohol, iso-amyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, and mixtures thereof.
Claim 7
Dependent Claim
30 words
The ink jet printing method of claim 1, wherein said ink further contains at least one diluent selected from the group consisting of hydrocarbons, halohydrocarbons, ethers, ketones, esters and alcohols.
Claim 8
Dependent Claim
13 words
The method of claim 2, wherein said amount is greater than 50 wt.%
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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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |