EP0610090A1
Expired / Lapsed
EP
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Hot melt ink for ink jet printers
Assignee: Brother Industries Ltd
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Filing: 1994-02-04
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Granted: —
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Expires: 2014-02-04
Abstract
Abstract A hot melt ink suitable for use in an ink jet printer comprises: a solid wax that is solid at normal temperature, the solid wax having a solubility parameter equal to or less than 9.50 and being present in an amount of 50% by weight or more; an organic substance that is miscible with the solid wax, the organic substance having a solubility parameter greater than that of the solid wax; a polymer material that is miscible with at least one of the solid wax and the organic substance, the polymer material having a weight average molecular weight of 500 or more; and a coloring material.
Inventors
- 👤 Masaya Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:16
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
A hot-melt ink suitable for use in an ink jet printer, comprising: a solid wax that is solid at normal temperature, the solid wax having a solubility parameter equal to or less than 9.50 and being present in an amount of 50% by weight or more; an organic substance that is miscible with the solid wax, the organic substance having a solubility parameter greater than that of the solid wax; a polymer material that is miscible with at least one of the solid wax and the organic substance, the polymer material having a weight average molecular weight of 500 or more; and a coloring material.
Claim 2
Dependent Claim
23 words
A hot melt ink according to claim 1, wherein the solubility parameter of the solid wax is equal to or less than 9.00
Claim 3
Dependent Claim
31 words
A hot melt ink according to claim 1 or 2, wherein the standard deviation of the solid wax's molecular weight distribution in the number of carbon atoms is 3.3 or less.
Claim 4
Dependent Claim
25 words
A holt melt ink according to any one of claims 1 to 3 wherein the solid wax has a melting point not lower than 60°C.
Claim 5
Dependent Claim
39 words
A hot melt ink according to any one of the preceding claims, wherein the solid wax comprises at least one wax selected from petroleum waxes, mineral waxes, synthetic hydrocarbons, ketones, esters, higher fatty acids, higher alcohols, and modified waxes.
Claim 6
Dependent Claim
24 words
A hot melt ink according to any one of the preceding claims wherein the organic substance has a solubility parameter not less then 9.01.
Claim 7
Dependent Claim
54 words
The hot melt ink according to any one of the preceding claims wherein the organic substance comprises at least one substance selected from petroleum waxes, plant waxes, animal waxes, mineral waxes, hydrogenated waxes, modified waxes, higher fatty acids, higher alcohols, hydroxystearic acids, fatty acid amines, amides, esters, polymerized waxes, methyl stearate, and octadecyl stearate.
Claim 8
Dependent Claim
28 words
A hot melt ink according to any one of the preceding claims wherein the organic substance is present in an amount of from 0.1 to 48 weight percent.
Claim 9
Dependent Claim
27 words
A hot melt ink according to any one of the preceding claims, wherein the polymer material has a weight average molecular weight of from 500 to 500,000.
Claim 10
Dependent Claim
28 words
A hot melt ink according to any one of the preceding claims, wherein the polymer material is present in an amount of from 0.1 to 48 weight percent.
Claim 11
Dependent Claim
65 words
A hot melt ink according to any one of the preceding claims wherein the polymer material comprises at least one oil-soluble resin selected from olefin resins, vinyl resins, acrylic resins, phenolic resins, polyurethane resins, polyamide resins, polyester resins, ketone resins, alkyd resins, rosin-based resins, hydrogenated rosin resins, petroleum resins, hydrogenated petroleum resins, maleic acid resins, butyral resins, terpene resins, hydrogenated terpene resins, and cumarone-indene resins.
Claim 12
Dependent Claim
87 words
A hot melt ink according to any one of the preceding claims, wherein the coloring material comprises (i) at least one organic pigment selected from quinacridone organic pigments, azo lake organic pigments, iso-indolinone organic pigments, disazo organic pigments, and phthalocyanine pigments, (ii) an inorganic pigment; or (iii) at least one dye selected from azo dyes, metal complex dyes, naphthol dyes, anthaquinone dyes, indigo dyes, carbonium dyes, quinoneimine dyes, cyanine dyes, quinoline dyes, nitro dyes, nitroso dyes, benzoquinone dyes, napthoquinone dyes, naphthalimide dyes, perionone dyes, and phthalocyanine dyes.
Claim 13
Dependent Claim
28 words
A hot melt ink according to any one of the preceding claims wherein the coloring material is present in an amount of from 0.1 to 20 weight percent.
Claim 14
Dependent Claim
17 words
An ink cartridge containing a hot melt ink as defined in any one of the preceding claims.
References Cited (Backward Citations)
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