Patent US906958A successfully refreshed from Google Patents.
Patent US5667570A successfully refreshed from Google Patents.
US5667570A
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Emulsion ink for stencil printing
Assignee: Riso Kagaku Corp
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Filing: 1996-04-30
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Granted: 1997-09-16
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Expires: 2016-04-30
Abstract
Abstract An emulsion ink for stencil printing is provided, which affords a printed image having a high density and a constant quality, without being influenced by kinds of printing paper used, and by the presence or absence of projections and depressions on the surface of printing paper used, has a superior drying property of ink and does not cause any exudation, seeping-through and offsetting, which emulsion ink for stencil printing comprises an oil phase and an aqueous phase to form a Water-in-oil(W/O) type emulsion ink, wherein a extender pigment is contained in the oil phase of the emulsion ink.
Inventors
- 👤 Sadanao Okuda
- 👤 Yoshihiro Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:51
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09D11/023; C09D11/0235
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A water-in-oil emulsion ink for stencil printing, which comprises an oil phase and an aqueous phase, wherein an extender pigment, a coloring agent, a resin, a non-volatile solvent, a mineral oil solvent or a plant oil solvent and an emulsifying agent are contained in the oil phase of the emulsion ink.
Claim 2
Dependent Claim
51 words
A water-in-oil emulsion ink for stencil printing, which comprises an oil phase and an aqueous phase, wherein an extender pigment, a coloring agent, a resin, a non-volatile solvent, a mineral oil solvent or a plant oil solvent and an emulsifying agent are contained in the oil phase of the emulsion ink.
Claim 3
Dependent Claim
34 words
An emulsion ink for stencil printing according to claim 1, wherein the extender pigment is contained in a quantity of 1 to 50% by weight based upon the total weight of the emulsion ink.
Claim 4
Dependent Claim
26 words
The emulsion ink according to claim 1 wherein the extender pigment is selected from the group consisting of calcium carbonate, titanium oxide, silica and mixtures thereof.
Claim 5
Dependent Claim
32 words
An emulsion ink for stencil printing according to claim 1, wherein a coloring agent, a resin, a non-volatile solvent, a volatile solvent and an emulsifying agent are contained in the oil phase.
Claim 6
Dependent Claim
62 words
A water-in-oil emulsion ink for stencil printing which comprises an oil phase and an aqueous phase, an extender pigment, a resin, a non-volatile solvent, a mineral oil solvent or a plant oil solvent and an emulsifying agent contained in the oil phase, and a coloring agent and an oil-in-water resin emulsion, a water-soluble polymer or mixtures thereof contained in the aqueous phase.
Claim 7
Dependent Claim
62 words
A water-in-oil emulsion ink for stencil printing which comprises an oil phase and an aqueous phase, an extender pigment, a resin, a non-volatile solvent, a mineral oil solvent or a plant oil solvent and an emulsifying agent contained in the oil phase, and a coloring agent and an oil-in-water resin emulsion, a water-soluble polymer or mixtures thereof contained in the aqueous phase.
Claim 8
Dependent Claim
30 words
The emulsion ink according to claim 2, wherein the extender pigment is at least one pigment selected from the group consisting of calcium carbonate, titanium oxide, silica and mixtures thereof.
Claim 9
Dependent Claim
32 words
An emulsion ink for stencil printing according to claim 2 wherein, a coloring agent, a resin, a non-volatile solvent, a volatile solvent and an emulsifying agent are contained in the oil phase.
Claim 10
Dependent Claim
50 words
An emulsion ink for stencil printing according to claim 2 wherein, a resin, a non-volatile solvent, a volatile solvent, and an emulsifying agent are contained in the oil phase, and a coloring agent and an oil-in-water resin emulsion a water-soluble polymer or mixtures thereof are contained in the aqueous phase.
Claim 11
Dependent Claim
34 words
An emulsion ink for stencil printing according to claim 5, wherein the extender pigment is contained in a quantity of 1 to 50% by weight based upon the total weight of the emulsion ink.
Claim 12
Dependent Claim
28 words
The emulsion ink according to claim 5, wherein the extender pigment is at least one pigment selected from the group consisting of calcium carbonate, titanium oxide and silica.
References Cited (Backward Citations)
US5389130A
Cited
US5429841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-09-15 | 2001-03-17 | 2001-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-15 | 2005-03-17 | 2005-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-15 | 2009-03-17 | 2009-09-16 | $7700.00 | Window Closed / Lapsed |