US4310356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous newsprint inks
Assignee: Synres Chemical Corp
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Filing: 1980-09-22
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Granted: 1982-01-12
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Expires: 2000-09-22
Abstract
Abstract In an improved process for printing newsprint paper with a light-weight keyless printing press system the mineral oil ink standardly used is replaced by an aqueous newsprint ink having a total solids content of about 13-80% and containing about 2-30% of a colorant consisting of a pigment and/or dye, about 3-60% of a dispersed starch, and water to total 100%, wherein the percentages are by weight based on total weight of the ink. The ink may optionally contain a viscosity stabilizer if necessary to prevent retrogradation of the starch or a thickener. In a preferred embodiment the pigment is carbon black and the starch is a dextrin or waxy fluidity starch.
Inventors
- 👤 Paolo C. Trubiano
- 👤 Aaron Y. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:53
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
An aqueous newsprint ink applicable for a light-weight keyless printing press system having a total solids content of about 13-80% and comprising about 2-30% of a carbon black pigment, about 3-60% of a dispersed starch, and water as the remainder of the ink in an amount to total 100%, wherein the percentages are by weight based on total weight of the ink.
Claim 2
Dependent Claim
62 words
An aqueous newsprint ink applicable for a light-weight keyless printing press system having a total solids content of about 13-80% and comprising about 2-30% of a carbon black pigment, about 3-60% of a dispersed starch, and water as the remainder of the ink in an amount to total 100%, wherein the percentages are by weight based on total weight of the ink.
Claim 3
Dependent Claim
21 words
The newsprint ink of claim 1 wherein said starch is a dextrin, a waxy fluidity starch or a derivatized fluidity starch.
Claim 4
Dependent Claim
33 words
The newsprint ink of claim 1 wherein the amounts of said carbon black pigment and starch are 10-25% and 15-55% by weight, respectively, and wherein the total solids content is 30-70% by weight.
Claim 5
Dependent Claim
21 words
The newsprint ink of claim 1 having a RFV Brookfield viscosity of 500-3600 cps at 20 rpm and at 25° C.
Claim 6
Dependent Claim
23 words
The newsprint ink of claim 1 wherein said carbon black pigment is partially replaced with a dye or pigment other than carbon black.
Claim 7
Dependent Claim
87 words
In a process for printing newsprint paper with a printing ink employing a light-weight keyless printing press system, the improvement which comprises using as the printing ink an aqueous newsprint ink having a total solids content of about 13-80% and comprising about 2-30% of a colorant consisting of a pigment, dye or mixture thereof, about 3-60% of a dispersed starch, and water as the remainder of the ink in an amount to total 100%, wherein the percentages are by weight based on total weight of the ink.
Claim 8
Dependent Claim
87 words
In a process for printing newsprint paper with a printing ink employing a light-weight keyless printing press system, the improvement which comprises using as the printing ink an aqueous newsprint ink having a total solids content of about 13-80% and comprising about 2-30% of a colorant consisting of a pigment, dye or mixture thereof, about 3-60% of a dispersed starch, and water as the remainder of the ink in an amount to total 100%, wherein the percentages are by weight based on total weight of the ink.
Claim 9
Dependent Claim
20 words
The process of claim 6 wherein said starch is a dextrin, a waxy fluidity starch or a derivatized fluidity starch.
Claim 10
Dependent Claim
30 words
The process of claim 6 wherein the amounts of said colorant, and starch are 10-25% and 15-55% by weight, respectively, and wherein the total solids content is 30-70% by weight.
Claim 11
Dependent Claim
17 words
The process of claim 6 wherein at least a portion of said colorant is carbon black pigment.
Claim 12
Dependent Claim
23 words
The process of claim 6 wherein said ink has a RVF Brookfield viscosity of 500-3600 cps at 20 rpm and at 25° C.
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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |