US4579591A
Expired / Lapsed
US
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Desensitizing solution for use in offset printing
Assignee: Fujifilm Holdings Corp
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Filing: 1984-07-19
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Granted: 1986-04-01
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Expires: 2004-07-19
Abstract
Abstract A cyan-free desensitizing solution for use in offset printing comprising as the effective ingredients: (a) at least one member selected from the group of an ammonium salt and amine salt of inositol hexaphosphate ester; (b) a water-soluble cationic polymer; and (c) a low molecular weight electrolyte.
Inventors
- 👤 Hiroaki Suzuki
- 👤 Masao Tanaka
- 👤 Masato Iwai
- 👤 Sadao Osawa
- 👤 Nobuyuki Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/28; B; B41; B41N; B41N3/00; B41N3/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
64 words
A ferrocyanide-free and ferricyanide-free desensitizing solution for use in offset printing comprising as the effective ingredients: (a) at least one member selected from the group of an ammonium salt and amine salt of inositol hexaphosphate ester; (b) a water-soluble cationic polymer; and (c) a low molecular weight electrolytic compond selected from a salt of an inorganic acid or a salt of an organic acid.
Claim 2
Dependent Claim
64 words
A ferrocyanide-free and ferricyanide-free desensitizing solution for use in offset printing comprising as the effective ingredients: (a) at least one member selected from the group of an ammonium salt and amine salt of inositol hexaphosphate ester; (b) a water-soluble cationic polymer; and (c) a low molecular weight electrolytic compond selected from a salt of an inorganic acid or a salt of an organic acid.
Claim 3
Dependent Claim
68 words
A desensitizing solution for use in offset printing as in claim 1, wherein ingredient (a) is used in an amount of from 10 to 200 parts by weight, ingredient (b) is used in an amount of from 20 to 150 parts by weight, and ingredient (c) is used in an amount of from 0.2 to 20 parts by weight, per 1,000 parts by weight of the desensitizing solution.
Claim 4
Dependent Claim
68 words
A desensitizing solution for use in offset printing as in claim 1, wherein ingredient (a) is used in an amount of from 40 to 75 parts by weight, ingredient (b) is used in an amount of from 40 to 100 parts by weight, and ingredient (c) is used in an amount of from 1 to 10 parts by weight, per 1,000 parts by weight of the desensitizing solution.
Claim 5
Dependent Claim
28 words
A desensitizing solution for use in offset printing as in claim 1, wherein the pH of the desensitizing solution is in the range of from 3 to 6.
Claim 6
Dependent Claim
28 words
A desensitizing solution for use in offset printing as in claim 2, wherein the pH of the desensitizing solution is in the range of from 3 to 6.
Claim 7
Dependent Claim
28 words
A desensitizing solution for use in offset printing as in claim 3, wherein the pH of the desensitizing solution is in the range of from 3 to 6.
Claim 8
Dependent Claim
58 words
A desensitizing solution for use in offset printing as in claim 1, wherein the water-soluble cationic polymer ingredient (b) is a water-soluble compound having a molecular weight in the range of from about 500 to 100,000 and having an amino group, imino group, tertiary amine group, quaternary ammonium salt group or a hydrazine group in the molecule thereof.
Claim 9
Dependent Claim
58 words
A desensitizing solution for use in offset printing as in claim 2, wherein the water-soluble cationic polymer ingredient (b) is a water-soluble compound having a molecular weight in the range of from about 500 to 100,000 and having an amino group, imino group, tertiary amine group, quaternary ammonium salt group or a hydrazine group in the molecule thereof.
Claim 10
Dependent Claim
58 words
A desensitizing solution for use in offset printing as in claim 4, wherein the water-soluble cationic polymer ingredient (b) is a water-soluble compound having a molecular weight in the range of from about 500 to 100,000 and having an amino group, imino group, tertiary amine group, quaternary ammonium salt group or a hydrazine group in the molecule thereof.
Claim 11
Dependent Claim
58 words
A desensitizing solution for use in offset printing as in claim 5, wherein the water-soluble cationic polymer ingredient (b) is a water-soluble compound having a molecular weight in the range of from about 500 to 100,000 and having an amino group, imino group, tertiary amine group, quaternary ammonium salt group or a hydrazine group in the molecule thereof.
Claim 12
Dependent Claim
32 words
A desensitizing solution for use in offset printing as in claim 1, wherein the inorganic acid is sulfuric acid, hydrochloric acid, HBr, HI, HF, nitric acid, perchloric acid or HPF 6 .
Claim 13
Dependent Claim
32 words
A desensitizing solution for use in offset printing as in claim 1, wherein the organic acid is organic sulfonic acid, amido sulfonic acid, organic phosphonic acid, organic carboxylic acid, or picric acid.
Claim 14
Dependent Claim
32 words
A desensitizing solution for use in offset printing as in claim 1, wherein the salt of ingredient (c) is an alkali metal salt, an alkaline earth metal salt or an ammonium salt.
Claim 15
Dependent Claim
34 words
A desensitizing solution for use in offset printing as in claim 1, wherein the ingredient (c) is an alkali metal salt or ammonium salt of nitric acid, sulfuric acid, carboxylic acid or sulfonic acid.
Claim 16
Dependent Claim
96 words
A desensitizing solution for use in offset printing as in claim 1, wherein the ingredient (c) is one member from the group consisting of NaCl, NaBr, KCl, KBr, LiCl, LiBr, HN 4 Cl, NaNo 3 , KNO 3 , NH 4 NO 3 , Ca(NO 3 ) 2 , Na 2 SO 4 , K 2 SO 4 , MgSO 4 , (NH 4 ) 2 SO 4 , HCOONa, CH 3 COONa, (COONa) 2 , Cl 3 CCOONa, NH 4 F, KPF 6 , ##STR3## NH 4 SO 3 NG 2 , and sodium malonate
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |