Patent US1434128A successfully refreshed from Google Patents.
Patent US4713113A successfully refreshed from Google Patents.
US4713113A
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Aqueous ink composition for ink-jet recording
Assignee: Ricoh Co Ltd
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Filing: 1985-10-22
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Granted: 1987-12-15
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Expires: 2005-10-22
Abstract
Abstract An aqueous ink composition for ink-jet recording comprising an aqueous solution of a water-soluble dye of formula (I) and a humectant dissolved in water: ##STR1## wherein R 1 and R 2 each represent hydrogen, an alkyl group, an alkoxy group, halogen, a carboxyl group or a sulfonic acid group; A represents ##STR2## wherein R 3 represents an alkyl group, a phenyl group, a carbamoyl group or a carboxyl group; R 4 represents an unsubstituted or substituted phenyl group, an unsubstituted or substituted napthyl group, or an unsubstituted or substituted alkyl group; R 5 represents a hydroxyl group or an amino group; R 6 represents a hydroxyl group or an unsubstituted or substituted amino group; M represents hydrogen, an alkali metal cation, amine cation or an ammonium ion; m is an integer of 0 or 1; and n is an integer of 1, 2 or 3.
Inventors
- 👤 Masaru Shimada
- 👤 Toshiyuki Kawanishi
- 👤 Kakuji Murakami
- 👤 Tamotsu Aruga
- 👤 Hiroyuki Uemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:22
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B35/00; C09B35/02; C09B35/021; C09B35/023; C09B35/03; C09B35/033; C09B35/039
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
An aqueous ink composition for ink-jet recording comprising an aqueous solution of a water-soluble dye of formula (I) and a humectant dissolved in water: ##STR20## wherein R 1 and R 2 each represent hydrogen, an alkyl group, an alkoxy group, halogen, a carboxyl group or a sulfonic acid group; A represents ##STR21## wherein R 3 represents an alkyl group, a phenyl group, a carbamoyl group or a carboxyl group; R 4 represents an unsubstituted or substituted phenyl group, an unsubstituted or substituted naphthyl group or an unsubstituted or substituted alkyl group; R 5 represents a hydroxyl group or an amino group; R 6 represents a hydroxyl group or an unsubstituted or substituted amino group; M represents hydrogen, an alkali metal cation, amine cation or an ammonium ion; m is an integer of 0 or 1; and n is an integer of 1, 2 or 3.
Claim 2
Dependent Claim
145 words
An aqueous ink composition for ink-jet recording comprising an aqueous solution of a water-soluble dye of formula (I) and a humectant dissolved in water: ##STR20## wherein R 1 and R 2 each represent hydrogen, an alkyl group, an alkoxy group, halogen, a carboxyl group or a sulfonic acid group; A represents ##STR21## wherein R 3 represents an alkyl group, a phenyl group, a carbamoyl group or a carboxyl group; R 4 represents an unsubstituted or substituted phenyl group, an unsubstituted or substituted naphthyl group or an unsubstituted or substituted alkyl group; R 5 represents a hydroxyl group or an amino group; R 6 represents a hydroxyl group or an unsubstituted or substituted amino group; M represents hydrogen, an alkali metal cation, amine cation or an ammonium ion; m is an integer of 0 or 1; and n is an integer of 1, 2 or 3.
Claim 3
Dependent Claim
41 words
An aqueous ink composition for ink-jet recording as claimed in claim 1, wherein the amount of said dye is in the range of 0.1 to 20 parts by weight with respect to 100 parts by weight of said aqueous ink composition.
Claim 4
Dependent Claim
60 words
An aqueous ink composition for ink-jet recording as claimed in claim 1, wherein said humectant is at least one compound selected from the group consisting of polyhydric alcohols and ethers thereof, and the mount of said humectant is in the range of 5 to 80 parts by weight with respect to 100 parts by weight of said aqueous ink composition.
Claim 5
Dependent Claim
63 words
An aqueous ink composition for ink-jet recording as claimed in claim 1, wherein said humectant is at least one compound selected from the group consisting of triethanol amine, dimethylformamide, N-methyl-2-pyrrolidone, 2-pyrrolidone and 1,3-dimethyl imidazolidinone, and the amount of said humectant is in the range of 5 to 80 parts by weight with respect to 100 parts by weight of said aqueous ink composition.
Claim 6
Dependent Claim
20 words
An aqueous ink composition for ink-jet recording as claimed in claim 1, further comprising a water-soluble preservative and anti-mold agent.
Claim 7
Dependent Claim
35 words
An aqueous ink composition for ink-jet recording as claimed in claim 3, wherein said polyhydric alcohol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol and glycerin.
Claim 8
Dependent Claim
54 words
An aqueous ink composition for ink-jet recording as claimed in claim 3, wherein said ether of polyhydric alcohol is selected from the group consisting of ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether and triethylene glycol monoethyl ether.
Claim 9
Dependent Claim
37 words
An aqueous ink composition for ink-jet recording as claimed in claim 5, wherein said water-soluble preservative and anti-mold agent is selected from the group consisting of sodium dehydroacetate, sodium benzoate, 2-pyridine thiol-1-oxide sodium salt and sodium pentachlorophenol.
Claim 10
Dependent Claim
24 words
An aqueous ink composition for ink-jet recording as claimed in claim 1, wherein said water-soluble dye is selected from the group consisting of: ##STR22##
References Cited (Backward Citations)
US3846141A
Cited
US3931142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |