US4248636A
Expired / Lapsed
US
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Ink for ink-jet printer containing dichloromethane as an organic solvent and a basic dye as a coloring agent
Assignee: Hitachi Ltd
•
Filing: 1979-03-06
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Granted: 1981-02-03
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Expires: 1999-03-06
Abstract
Abstract An ink for an ink-jet printer having a specific resistance of 1 k OMEGA -cm or less and comprising (1) as an organic solvent in a vehicle (a) dichloromethane or (b) a mixed solvent of dichloromethane and at least one member selected from halogenated lower alkanes except for dichloromethane and halogenated lower alkenes and (2) as a coloring agent (a) a basic dye or (b) a mixture of a basic dye and at least one selected from oil-soluble dyes and organic pigments can ink-jet print letters, symbols, etc. on a hydrophobic substrate.
Inventors
- 👤 Ryusei Sasaki
- 👤 Yasuki Mori
- 👤 Hirosada Morishita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/36; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
57 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, and (b) 0.2 part by weight or more of a basic dye as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 2
Dependent Claim
57 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, and (b) 0.2 part by weight or more of a basic dye as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 3
Dependent Claim
96 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, p1 (b) 0.2 part by weight or more of a basic dye as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 4
Dependent Claim
96 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, p1 (b) 0.2 part by weight or more of a basic dye as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 5
Dependent Claim
95 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and (b) 0.2 part by weight or more of a basic dye as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 6
Dependent Claim
95 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and (b) 0.2 part by weight or more of a basic dye as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 7
Dependent Claim
130 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, (b) 0.2 part by weight or more of a basic dye as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 8
Dependent Claim
130 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, (b) 0.2 part by weight or more of a basic dye as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 9
Dependent Claim
21 words
An ink according to claim 3 or 4, wherein the proportion of dichloromethane in the mixed solvent being 30-60% by weight.
Claim 10
Dependent Claim
31 words
An ink according to claim 1 or 2, wherein the basic dye is used in an amount of 0.5-6 parts by weight per 100 parts by weight of the organic solvent.
Claim 11
Dependent Claim
29 words
An ink according to claim 6, wherein the basic dye is used in an amount of 1-2 parts by weight per 100 parts by weight of the organic solvent.
Claim 12
Dependent Claim
30 words
An ink according to claim 3 or 4, wherein the halogenated lower alkanes except for dichloromethane and the halogenated lower alkenes are trichlorofluoromethane, 1,1,1-trichloroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, 1,1,2,2-tetrachloro-1,2-difluoroethane, trichloethylene, tetrachloroethylene and α-bromopropane.
Claim 13
Dependent Claim
58 words
An ink according to claim 1 or 2, wherein the basic dye is Rhodamine B (C.I. 45170), Malachite Green (C.I. 42000), Methylene Blue (C.I. 52015), Crystal Violet (C.I. 42555), Acridine Orange (C.I. 46005), Bismarck Brown R (C.I. 21010), Methyl Violet (C.I. 42535), Aniline Blue (C.I. 42775), Aizen Methyl Violet pure special (C.I. 42535) or Rhodamine 6G (C.I. 45160).
Claim 14
Dependent Claim
89 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, and (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 15
Dependent Claim
89 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, and (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 16
Dependent Claim
127 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 17
Dependent Claim
127 words
An ink for an ink-jet printer which comprises (a) 100 parts by weight of dichloromethane as an organic solvent, (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 18
Dependent Claim
59 words
An ink according to claim 10 or 11, wherein the oil-soluble dye is Sudan I (C.I. 12055), oil Red (C.I. 12140), Biebrich Scarlet (C.I. 26105), Oil Brown B (C.I. 12010), Induline (C.I. 50400), Oil Brown BB (C.I. 12020), Solvent Green 4 (C.I. 45550), Solvent Blue 35 (C.I. 61554), Solvent Blue 70 (C.I. 74400), or Solvent Red 122 (C.I. 12716).
Claim 19
Dependent Claim
31 words
An ink according to claim 10 or 11, wherein the organic pigment is Heliogen Blue 7080 (C.I. 70460), Fanal Blue PTM 6340 (C.I. 42595), or Fanal Blue PTM 6390 (C.I. 42595).
Claim 20
Dependent Claim
31 words
An ink according to claim 2, wherein the solid component is used in an amount of 0.5 to 6 parts by weight per 100 parts by weight of the organic solvent.
Claim 21
Dependent Claim
71 words
An ink according to claim 2, wherein the resins and rubbers are selected from the group consisting of epoxy resins, phenol resins, xylene resins, ketone resins, alkyd resins, rosin resins, terpene resins, or modified resins thereof, homopolymers and copolymers of styrene, acrylate, vinyl chloride and vinyl acetate, polyvinyl acetals, polyesters, polyamides, cellulose derivatives, natural rubber, polybutadiene rubbers, polyisoprene rubbers, chloroprene rubbers and isobutylene-isoprene rubbers, and mixtures of at least two thereof.
Claim 22
Dependent Claim
127 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 23
Dependent Claim
127 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and (b) a total of 0.2 part by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 24
Dependent Claim
165 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, (b) a total of 0.2 parts by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 25
Dependent Claim
165 words
An ink for an ink-jet printer which comprises (a) a total of 100 parts by weight of dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, (b) a total of 0.2 parts by weight or more of a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of the basic dye in the mixture being 20-95% by weight, as a coloring agent, and (c) 10 parts by weight or less but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed of a solid component selected from the group consisting of resins and rubbers, said ink having a specific resistance of 1 kΩ-cm or less, whereby said ink is adapted for use in an ink-jet printer.
Claim 26
Dependent Claim
28 words
An ink according to claim 1, 2, 3, 4, 10, 11, 16 or 17, wherein the ink has a viscosity of 5 centipoises or less at room temperature.
Claim 27
Dependent Claim
18 words
An ink according to claim 18, wherein the ink has a surface tension of 25 dyne/cm or more.
Claim 28
Dependent Claim
125 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane as an organic solvent, and a basic dye in an amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 25 dyne/cm or more.
Claim 29
Dependent Claim
125 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane as an organic solvent, and a basic dye in an amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 25 dyne/cm or more.
Claim 30
Dependent Claim
160 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and a basic dye in an amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 25 dyne/cm or more.
Claim 31
Dependent Claim
160 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane and at least one member selected from the group consisting of halogenated lower alkanes except for dichloromethane and halogenated lower alkenes, the proportion of dichloromethane in the mixed solvent being 20% by weight or more, as an organic solvent, and a basic dye in an amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 25 dyne/cm or more.
Claim 32
Dependent Claim
154 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane as an organic solvent; and a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of basic dye in the mixture being 20-95% by weight, in a total amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 35 dyne/cm or more.
Claim 33
Dependent Claim
154 words
In a method for printing a substrate with an ink jetted in a continuous flow of fine particles from an orifice by the action of a vibrator operated magnetically or electrically, said flow of particles being controlled by a video signal from an electronic character generator and an electrostatic deflection system, the improvement which comprises employing an ink which is anhydrous and comprises dichloromethane as an organic solvent; and a basic dye and at least one member selected from the group consisting of oil-soluble dyes and organic pigments, the proportion of basic dye in the mixture being 20-95% by weight, in a total amount of at least 0.2 part by weight per 100 parts by weight of the organic solvent, as a coloring agent, said ink having a specific resistance of 1 kΩ-cm or less, a viscosity of 5 centipoises or less at room temperature, and a surface tension of 35 dyne/cm or more.
Claim 34
Dependent Claim
63 words
A method according to claim 14, 21 or 22 wherein the ink further comprises a solid component selected from the group consisting of resins and rubbers in an amount of 10 parts by weight or less per 100 parts by weight of the organic solvent but a sufficient amount for securing the adhesion of the coloring agent to the surface to be printed.
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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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |