Patent US4604952A successfully refreshed from Google Patents.
US4604952A
Expired / Lapsed
US
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Quick drying fountain solutions
Assignee: BASF Corp
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Filing: 1985-06-14
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Granted: 1986-08-12
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Expires: 2005-06-14
Abstract
Abstract Water based fountain solutions for use in lithographic printing. The fountain solutions contain sufficient hydrogen peroxide to cause lithographic inks to dry more quickly. Typically the fountain solutions will contain about 0.005 wt. % to about 5.0 wt. % of hydrogen peroxide. The hydrogen peroxide containing fountain solutions are typically manufactured as concentrates which are diluted with water at the printing sites to form the proper strength fountain solutions required for printing. The hydrogen peroxide containing fountain solutions are used in conventional lithographic printing processes.
Inventors
- 👤 John W. Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:12
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
In a method of lithographic printing, comprising: (a) transferring a water based fountain solution to a lithographic plate, (b) then transferring at least one lithographic ink to said plate, (c) transferring said ink from said plate to a blanket roll, and (d) then transferring said ink from said roll to a substrate thereby producing a printed image, wherein the improvement comprises the inclusion of about 0.005 wt. % to about 5.0 wt. % of hydrogen peroxide in the fountain solution for the purpose of quick drying, thereby producing a decrease in the drying time of the ink.
Claim 2
Dependent Claim
97 words
In a method of lithographic printing, comprising: (a) transferring a water based fountain solution to a lithographic plate, (b) then transferring at least one lithographic ink to said plate, (c) transferring said ink from said plate to a blanket roll, and (d) then transferring said ink from said roll to a substrate thereby producing a printed image, wherein the improvement comprises the inclusion of about 0.005 wt. % to about 5.0 wt. % of hydrogen peroxide in the fountain solution for the purpose of quick drying, thereby producing a decrease in the drying time of the ink.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein the concentration of hydrogen peroxide in the fountain solution is about 0.1 wt. % to about 3.0 wt. %.
Claim 4
Dependent Claim
20 words
The method of claim 1 wherein the concentration of hydrogen peroxide in the fountain solution is about 0.6 wt. %.
Claim 5
Dependent Claim
93 words
In a method of lithographic printing, comprising: (a) simultaneously transferring a water-based fountain solution and at least one lithographic ink to a lithographic plate, (b) then transferring said ink from said plate to a blanket roll, and (c) Then transferring said ink from said roll to a substrate, thereby producing a printed image, wherein the improvement comprises the inclusion of about 0.005 wt. % to about 5.0 wt. % of hydrogen peroxide in the fountain solution for the purpose of quick drying, thereby producing a decrease in the drying time of the ink.
Claim 6
Dependent Claim
93 words
In a method of lithographic printing, comprising: (a) simultaneously transferring a water-based fountain solution and at least one lithographic ink to a lithographic plate, (b) then transferring said ink from said plate to a blanket roll, and (c) Then transferring said ink from said roll to a substrate, thereby producing a printed image, wherein the improvement comprises the inclusion of about 0.005 wt. % to about 5.0 wt. % of hydrogen peroxide in the fountain solution for the purpose of quick drying, thereby producing a decrease in the drying time of the ink.
Claim 7
Dependent Claim
25 words
The method of claim 4 wherein the concentration of hydrogen peroxide in the fountain solution is about 0.1 wt. % to about 3.0 wt. %.
Claim 8
Dependent Claim
20 words
The method of claim 4 wherein the concentration of hydrogen peroxide in the fountain solution is about 0.6 wt. %.
References Cited (Backward Citations)
US3619217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-11 | 1990-02-10 | 1990-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-11 | 1994-02-10 | 1994-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-11 | 1998-02-10 | 1998-08-12 | $7700.00 | Window Closed / Lapsed |