US4585483A
Expired / Lapsed
US
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Recording materials
Assignee: Fujifilm Holdings Corp
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Filing: 1984-05-21
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Granted: 1986-04-29
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Expires: 2004-05-21
Abstract
Abstract A recording material is disclosed which contains an electron donating colorless dye and an electron accepting compound. The electron accepting compound is an aromatic compound having a substituted or unsubstituted sulfamoyl group and a hydroxyl group as substituents. The recording material can provide high density images which provide sufficient fastness during storage.
Inventors
- 👤 Kensuke Ikeda
- 👤 Ken Iwakura
- 👤 Masato Satomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/337; B41M5/3375; B41M5/124; B41M5/132; B41M5/155; B41M5/333; B41M5/3333; B41M5/3335; B41M5/3336
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
153 words
A pressure-sensitive or heat-sensitive recording material comprising an electron donating colorless dye and an electron accepting compound, wherein the electron accepting compound is an aromatic compound having a substituted or unsubstituted sulfamoyl group and a hydroxyl group as substituents, wherein the electron accepting compound is a compound represented by one of the general formulae (I) to (III): ##STR6## wherein R 1 and R 2 independently represent a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, which may be substituted by alkyl groups, halogen atoms, alkoxy groups or hydroxyl groups; Y is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an electron attractive group; Z is an alkylene residue, an arylene residue or --R 3 --X--R 4 -- (wherein R 3 and R 4 independently represent an alkylene residue, and X is an arylene residue or an oxygen atom.
Claim 2
Dependent Claim
153 words
A pressure-sensitive or heat-sensitive recording material comprising an electron donating colorless dye and an electron accepting compound, wherein the electron accepting compound is an aromatic compound having a substituted or unsubstituted sulfamoyl group and a hydroxyl group as substituents, wherein the electron accepting compound is a compound represented by one of the general formulae (I) to (III): ##STR6## wherein R 1 and R 2 independently represent a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, which may be substituted by alkyl groups, halogen atoms, alkoxy groups or hydroxyl groups; Y is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an electron attractive group; Z is an alkylene residue, an arylene residue or --R 3 --X--R 4 -- (wherein R 3 and R 4 independently represent an alkylene residue, and X is an arylene residue or an oxygen atom.
Claim 3
Dependent Claim
25 words
A recording material as claimed in claim 1, wherein R 1 is a hydrogen atom or an alkyl group containing 1 to 8 carbon atoms.
Claim 4
Dependent Claim
25 words
A recording material as claimed in claim 2, wherein R 1 is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms.
Claim 5
Dependent Claim
43 words
A recording material as claimed in claim 1, wherein R 2 is a hydrogen atom, an alkyl group containing 1 to 8 carbon atoms, an aralkyl group containing 7 to 12 carbon atoms, or an aryl group containing 6 to 12 carbon atoms.
Claim 6
Dependent Claim
58 words
A recording material as claimed in claim 4, wherein R 2 is a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, an aralkyl group containing 7 to 10 carbon atoms, an aryl group containing 6 to 10 carbon atoms, a halogen substituted aryl group, an alkoxy substituted aryl group or a hydroxyl substituted aryl group.
Claim 7
Dependent Claim
60 words
A recording material as claimed in claim 1, wherein Y is a hydrogen atom, an alkyl group containing 1 to 8 carbon atoms, an aralkyl group containing 7 to 12 carbon atoms, an aryl group containing 6 to 12 carbon atoms, a chlorine atom, a bromine atom, hyroxyl group, or an electron attractive group containing 18 or less carbon atoms.
Claim 8
Dependent Claim
86 words
A recording material as claimed in claim 6, wherein Y is a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms, an aralkyl group containing 7 to 9 carbon atoms, an aryl group containing 6 to 9 carbon atoms, a chlorine atom, a hydroxyl group, an acyl group containing 1 to 8 carbon atoms, a substituted carbamoyl group having 2 to 9 carbon atoms, a sulfamoyl group containing 1 to 8 carbon atoms or a substituted sulfamoyl group containing 1 to 8 carbon atoms.
Claim 9
Dependent Claim
41 words
A recording material as claimed in claim 1, wherein Z is an alkylene residue having 2 to 10 carbon atoms, an arylene residue containing 6 to 12 carbon atoms or --R 3 --X--R 4 -- having 2 to 12 carbon atoms.
Claim 10
Dependent Claim
98 words
A recording material as claimed in claim 1, wherein the electron accepting compound is a compound represented by the general formulae (IV) to (VI): ##STR7## wherein R 6 represents a hydrogen atom or an alkyl group having 1 to 4 carbom atoms, R 5 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a chlorine atom, Y 1 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a chlorine atom, and n is an integer from 1 to 4.
Claim 11
Dependent Claim
22 words
A recording material as claimed in claim 1, wherein the electron accepting compound has a melting point of 50° C. or more.
Claim 12
Dependent Claim
26 words
A recording material as claimed in claim 10, wherein the electron accepting compound has a melting point in the range of 70° C. to 200° C.
Claim 13
Dependent Claim
14 words
A recording material as claimed in claim 1, which is a pressure-sensitive recording material.
Claim 14
Dependent Claim
14 words
A recording material as claimed in claim 1, which is a heat-sensitive recording material.
Claim 15
Dependent Claim
57 words
A recording material as claimed in claim 1, wherein R 1 and R 2 are not simultaneously hydrogen or lower alkyl, wherein R 1 is not hydrogen and R 2 is not lower alkyl, wherein R 1 and R 2 are not simultaneously aryl or wherein R 1 is hydrogen and R 2 is an aryl group.
Claim 16
Dependent Claim
22 words
A recording material as claimed in claim 13, wherein the electron accepting compound has a melting point of 50° C. or more.
Claim 17
Dependent Claim
30 words
A recording material as claimed in claim 12, which comprises a pair of sheets where the electron donating colorless dye and the electron accepting compound are present on separate sheets.
Claim 18
Dependent Claim
22 words
A recording material as claimed in claim 16, wherein the electron donating colorless dye is dissolved in a solvent and then encapsulated.
Claim 19
Dependent Claim
44 words
A recording material as claimed in claim 16, wherein from 0.1 to 6 g of the electron accepting compound and 0.1 to 10 g of a binder is used based on 1 m 2 of the sheet carrying the electron accepting compound and binder.
Claim 20
Dependent Claim
15 words
A recording material as claimed in claim 13, which further comprises a thermally fusible substance.
Claim 21
Dependent Claim
55 words
A recording material as claimed in claim 19, which comprises 0.1 to 2 g of the electron donating colorless dye, 0.1 to 6 g of the electron accepting compound, up to 6 g of the thermally diffusible substance and 0.1 to 10 g of binders based on 1 m 2 of the heat-sensitive recording material.
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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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |