US5637137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion ink for stencil printing
Assignee: Riso Kagaku Corp
•
Filing: 1996-02-07
•
Granted: 1997-06-10
•
Expires: 2016-02-07
Abstract
Abstract An emulsion ink for stencil printing of a water-in-oil (W/O) having an oil phase and a water phase is disclosed which emulsion ink is characterized in that the water phase contains an extender pigment. The emulsion ink can provide printed images having a high print concentration and a constant quality without causing strike through, offset, and bleeding of ink.
Inventors
- 👤 Sadanao Okuda
- 👤 Yoshihiro Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09D11/023; C09D11/0235
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
34 words
A water-in-oil emulsion ink for stencil printing having an oil phase and a water phase, containing a colorant in the oil phase or water phase, and containing an extender pigment in the water phase.
Claim 2
Dependent Claim
34 words
A water-in-oil emulsion ink for stencil printing having an oil phase and a water phase, containing a colorant in the oil phase or water phase, and containing an extender pigment in the water phase.
Claim 3
Dependent Claim
34 words
The emulsion ink for stencil printing according to claim 1 wherein the extender pigment is contained in an amount of 1 to 50% by weight based on the total weight of the emulsion ink.
Claim 4
Dependent Claim
43 words
The emulsion ink for stencil printing according to claim 1 wherein the oil phase contains a colorant, resin, non-volatile solvent, volatile solvent, and emulsifier, and the water phase contains an oil-in-water (O/W) resin emulsion, a water soluble macromolecular compound, or a mixture thereof.
Claim 5
Dependent Claim
44 words
The emulsion ink for stencil printing according to claim 1 wherein the oil phase contains a non-volatile solvent, volatile solvent, and emulsifier, and the water phase contains a colorant, and an oil-in-water (O/W) resin emulsion, a water soluble macromolecular compound, or a mixture thereof.
Claim 6
Dependent Claim
43 words
The emulsion ink for stencil printing according to claim 2 wherein the oil phase contains a colorant, resin, non-volatile solvent, volatile solvent, and emulsifier, and the water phase contains an oil-in-water (O/W) resin emulsion, a water soluble macromolecular compound, or a mixture thereof.
Claim 7
Dependent Claim
44 words
The emulsion ink for stencil printing according to claim 2 wherein the oil phase contains a non-volatile solvent, volatile solvent, and emulsifier, and the water phase contains a colorant, and an oil-in-water (O/W) resin emulsion, a water soluble macromolecular compound, or a mixture thereof.
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) | 2000-06-09 | 2000-12-09 | 2001-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-09 | 2004-12-09 | 2005-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-09 | 2008-12-09 | 2009-06-10 | $7700.00 | Window Closed / Lapsed |