US4411979A
Expired / Lapsed
US
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Diazo type thermosensitive recording material
Assignee: Ricoh Co Ltd
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Filing: 1982-01-06
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Granted: 1983-10-25
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Expires: 2002-01-06
Abstract
Abstract A diazo type thermosensitive recording material comprising a support material and a thermosensitive recording layer formed thereon, wherein the thermosensitive recording layer comprises a diazo compound, a coupler, a thermo-fusible or thermo-softening binder agent and a thermo-fusible material. The weight ratio of the diazo compound and the thermo-fusible material is in the range of 1:2 to 1:30, and both the diazo compound and the coupler exist as separate particles in the thermosensitive recording layer.
Inventors
- 👤 Masanaka Nagamoto
- 👤 Yoshihiro Koseki
- 👤 Susumu Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0003; G; G03; G03C; G03C1/00; G03C1/52; G03C1/54; G03C1/61
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
232 words
A diazotype thermosensitive recording material, comprising: a support material and a thermosensitive recording layer formed thereon, said thermosensitive recording layer comprising (a) a diazonium compound selected from the group consisting of diazonium compounds having the formulas (IV) and (V): ##STR26## wherein R 17 , R 18 , R 19 , R 21 , R 22 and R 23 each is hydrogen, lower alkyl, lower alkoxy or halogen, R 20 is hydrogen, lower alkyl or lower alkoxy; R 4 is sulfur or oxygen; and Y 1 and Y 2 each represent a halogen ion, a fluorine-containing ion, or an acidic residue forming a double salt, in combination with a metallic salt, (b) a coupler consisting essentially of phloroglucinol, (c) a thermo-fusible or thermo-softening, film-forming binder and (d) a thermo-fusible material capable of promoting fusing said layer when heat is applied thereto to effect a speedy coloring reaction between said diazonium compound and said coupler, the weight ratio of said diazonium compound to said thermo-fusible material being in the range of 1:2 to 1:30, said thermosensitive recording layer has been formed by drying on said support, a dispersion comprising said diazonium compound, said coupler, said thermo-fusible or thermo-softening binder, said thermo-fusible material, and a solvent in which said diazo compound and said coupler are substantially insoluble, so that both said diazonium compound and said coupler exist as unconsecutive particles in said thermosensitive recording layer.
Claim 2
Dependent Claim
232 words
A diazotype thermosensitive recording material, comprising: a support material and a thermosensitive recording layer formed thereon, said thermosensitive recording layer comprising (a) a diazonium compound selected from the group consisting of diazonium compounds having the formulas (IV) and (V): ##STR26## wherein R 17 , R 18 , R 19 , R 21 , R 22 and R 23 each is hydrogen, lower alkyl, lower alkoxy or halogen, R 20 is hydrogen, lower alkyl or lower alkoxy; R 4 is sulfur or oxygen; and Y 1 and Y 2 each represent a halogen ion, a fluorine-containing ion, or an acidic residue forming a double salt, in combination with a metallic salt, (b) a coupler consisting essentially of phloroglucinol, (c) a thermo-fusible or thermo-softening, film-forming binder and (d) a thermo-fusible material capable of promoting fusing said layer when heat is applied thereto to effect a speedy coloring reaction between said diazonium compound and said coupler, the weight ratio of said diazonium compound to said thermo-fusible material being in the range of 1:2 to 1:30, said thermosensitive recording layer has been formed by drying on said support, a dispersion comprising said diazonium compound, said coupler, said thermo-fusible or thermo-softening binder, said thermo-fusible material, and a solvent in which said diazo compound and said coupler are substantially insoluble, so that both said diazonium compound and said coupler exist as unconsecutive particles in said thermosensitive recording layer.
Claim 3
Dependent Claim
40 words
A recording material as claimed in claim 1, wherein Y 1 and Y 2 are each a salt complex comprising a halogen and a member selected from the group consisting of ZnCl 2 , CdCl 2 and SnCl 2 .
Claim 4
Dependent Claim
32 words
A recording material as claimed in claim 1, wherein Y 1 and Y 2 are each a member selected from the group consisting of BF 4 - and PF 6 - .
Claim 5
Dependent Claim
20 words
A recording material as claimed in claim 1, wherein said diazonium compound is selected from the group consisting of: ##STR27##
Claim 6
Dependent Claim
14 words
A recording material as claimed in claim 1, wherein said diazonium compound is: ##STR28##
Claim 7
Dependent Claim
35 words
A recording material as claimed in claim 1, wherein said thermo-fusible or thermo-softening binder and said thermo-fusible material each have a melting or softening point in the range of from 50° C. to 250° C.
Claim 8
Dependent Claim
79 words
A recording material as claimed in claim 6, wherein said thermo-fusible material is a member selected from the group consisting of 2-tribromethanol, 2,2-dimethyltrimethylene glycol, cyclohexane-1,2-diol, malonic acid, glutaric acid, maleic acid, methylmaleic acid, bees wax, shellac wax, carnauba wax, montan wax, paraffin wax, microcrystalline wax, polyalcohol esters of higher fatty acids, higher fatty ketones, higher fatty amines, higher fatty amides, condensates of fatty acids and amines, condensates of aromatic acids and amines, synthetic paraffins, paraffin chlorides and metal salts.
Claim 9
Dependent Claim
54 words
A recording material as claimed in claim 6, wherein said thermo-fusible or thermo-softening binder is a member selected from the group consisting of cyclized rubber, polyvinyl acetate, polyvinyl chloride, co-polymer of vinyl chloride and vinyl acetate, acrylic resins, polystyrene, polyesters, polybutadienes, acrylic acid esters and acrylic co-polymers of styrene and butadiene, and cellulose derivatives.
Claim 10
Dependent Claim
206 words
A diazotype thermosensitive recording material comprising a support material and a thermosensitive recording layer formed thereon, said thermosensitive recording layer comprising (a) a diazonium compound selected from the group consisting of diazonium compounds having the formula: ##STR29## wherein R 21 , R 22 and R 23 each is hydrogen, lower alkyl, lower alkoxy or halogen; R 20 is hydrogen, lower alkyl or lower alkoxy and Y 2 represents a halogen ion, a fluorine-containing ion, or an acidic residue forming a double salt, in combination with a metallic salt, (b) a coupler, (c) a thermo-fusible or thermo-softening, film-forming binder and (d) a thermo-fusible material capable of promoting fusing said layer when heat is applied thereto to effect a speedy coloring reaction between said diazonium compound and said coupler, the weight ratio of said diazonium compound to said thermo-fusible material being in the range of 1:2 to 1:30, said thermosensitive recording layer has been formed by drying on said support a dispersion comprising said diazonium compound, said coupler, said thermo-fusible or thermo-softening binder, said thermo-fusible material, and a solvent in which said diazo compound and said coupler are substantially insoluble, so that both said diazonium compound and said coupler exist as unconsecutive particles in said thermosensitive recording layer.
Claim 11
Dependent Claim
206 words
A diazotype thermosensitive recording material comprising a support material and a thermosensitive recording layer formed thereon, said thermosensitive recording layer comprising (a) a diazonium compound selected from the group consisting of diazonium compounds having the formula: ##STR29## wherein R 21 , R 22 and R 23 each is hydrogen, lower alkyl, lower alkoxy or halogen; R 20 is hydrogen, lower alkyl or lower alkoxy and Y 2 represents a halogen ion, a fluorine-containing ion, or an acidic residue forming a double salt, in combination with a metallic salt, (b) a coupler, (c) a thermo-fusible or thermo-softening, film-forming binder and (d) a thermo-fusible material capable of promoting fusing said layer when heat is applied thereto to effect a speedy coloring reaction between said diazonium compound and said coupler, the weight ratio of said diazonium compound to said thermo-fusible material being in the range of 1:2 to 1:30, said thermosensitive recording layer has been formed by drying on said support a dispersion comprising said diazonium compound, said coupler, said thermo-fusible or thermo-softening binder, said thermo-fusible material, and a solvent in which said diazo compound and said coupler are substantially insoluble, so that both said diazonium compound and said coupler exist as unconsecutive particles in said thermosensitive recording layer.
Claim 12
Dependent Claim
36 words
A recording material as claimed in claim 9, wherein Y 2 is a salt complex comprising a halogen and a member selected from the group consisting of ZnCl 2 , CdCl 2 and SnCl 2 .
Claim 13
Dependent Claim
26 words
A recording material as claimed in claim 9, wherein Y 2 is selected from the group consisting of BF 4 - and PF 6 - .
Claim 14
Dependent Claim
39 words
A recording material as claimed in claim 9, wherein said coupler is a member selected from the group consisting of phenol, resorcinol, resorcylic acid, phloroglucinol, phloroglucinolcarboxylic acid, 2,6-dimethyl-1,3,5-trihydroxybenzene, 2,6-dihydroxy-3,5-dibromo-4-methoxy benzoic acid, α-naphthol, β-naphthol, 2,3-dihydroxynaphthalene, 2,3-dihydroxynaphthalene-6-sodium sulfonate and 2-hydroxy-3-propylmorpholino-naphthoic acid.
Claim 15
Dependent Claim
35 words
A recording material as claimed in claim 9, wherein said thermo-fusible or thermo-softening binder and said thermo-fusible material each have a melting or softening point in the range of from 50° C. to 250° C.
Claim 16
Dependent Claim
79 words
A recording material as claimed in claim 13, wherein said thermo-fusible material is a member selected from the group consisting of 2-tribromethanol, 2,2-dimethyltrimethylene glycol, cyclohexane-1,2-diol, malonic acid, glutaric acid, maleic acid, methylmaleic acid, bees wax, shellac wax, carnauba wax, montan wax, paraffin wax, microcrystalline wax, polyalcohol esters of higher fatty acids, higher fatty ketones, higher fatty amines, higher fatty amides, condensates of fatty acids and amines, condensates of aromatic acids and amines, synthetic paraffins, paraffin chlorides and metal salts.
Claim 17
Dependent Claim
55 words
A recording material as claimed in claim 13, wherein said thermo-fusible or thermo-softening binder agent is a member selected from the group consisting of cyclized rubber, polyvinyl acetate, polyvinyl chloride, co-polymer of vinyl chloride and vinyl acetate, acryl resins, polystyrene, polyesters, polybutadienes, acrylic acid esters and acrylic co-polymers of styrene and butadiene, and cellulose derivatives.
Claim 18
Dependent Claim
14 words
A recording material as claimed in claim 13, in which said coupler is phloroglucinol.
Claim 19
Dependent Claim
20 words
A recording material as claimed in claim 9, wherein said diazonium compound is selected from the group consisting of: ##STR30##
Claim 20
Dependent Claim
14 words
A recording material as claimed in claim 9, wherein said diazonium compound is: ##STR31##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |