US4950638A
Expired / Lapsed
US
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Thermosensitive recording material having recording layer containing fluorescent dye composition
Assignee: Ricoh Co Ltd
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Filing: 1987-10-06
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Granted: 1990-08-21
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Expires: 2007-10-06
Abstract
Abstract A thermosensitive recording material is disclosed, which comprises a support, and a thermosensitive recording layer formed on one side of the support, the thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition.
Inventors
- 👤 Yukihiro Yuyama
- 👤 Kenji Uematsu
- 👤 Hiroaki Okuda
- 👤 Hideo Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:12
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/323; B41M5/333; B41M5/337; B41M5/3375; G09F2003/0208; G09F2003/0211; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
95 words
A thermosensitive recording material comprising: a support; and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a colored image upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye composition comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 2
Dependent Claim
95 words
A thermosensitive recording material comprising: a support; and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a colored image upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye composition comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 3
Dependent Claim
25 words
The thermosensitive recording material as claimed in claim 1, wherein said colored layer is overlaid on said thermosensitive coloring layer in said thermosensitive recording layer.
Claim 4
Dependent Claim
18 words
The thermosensitive recording material as claimed in claim 2, further comprising a barrier layer on said colored layer.
Claim 5
Dependent Claim
23 words
The thermosensitive recording material as claimed in claim 2, further comprising a barrier layer between said thermosensitive coloring layer and said colored layer.
Claim 6
Dependent Claim
20 words
The thermosensitive recording material as claimed in claim 1, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 7
Dependent Claim
19 words
The thermosensitive recording material as claimed in claim 5, further comprising a barrier layer on said thermosensitive coloring layer.
Claim 8
Dependent Claim
23 words
The thermosensitive recording material as claimed in claim 5, further comprising a barrier layer between said thermosensitive coloring layer and said colored layer.
Claim 9
Dependent Claim
39 words
The thermosensitive recording material as claimed in claim 1, wherein said thermosensitive coloring system is a combination of a leuco dye and a color developer capable of inducing color formation in said leuco dye upon application of heat thereto.
Claim 10
Dependent Claim
39 words
The thermosensitive recording material as claimed in claim 1, wherein the amount of said colored fluorescent dye composition in said colored layer is in the range of 10 to 95 wt.% of the entire weight of said colored layer.
Claim 11
Dependent Claim
101 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a coloring system capable of producing a colored image upon application of heat thereto and a colored fluorescent dye composition, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye composition comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 12
Dependent Claim
101 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a coloring system capable of producing a colored image upon application of heat thereto and a colored fluorescent dye composition, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye composition comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 13
Dependent Claim
41 words
The thermosensitive recording material as claimed in claim 10, wherein the amount of said colored fluorescent dye composition in said thermosensitive coloring layer is in the range of 15 to 60 wt.% of the entire weight of said thermosensitive coloring layer.
Claim 14
Dependent Claim
99 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive color system capable of producing a colored image upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 15
Dependent Claim
99 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive color system capable of producing a colored image upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition and a first resin, said colored fluorescent dye comprising a second resin which is dyed with a fluorescent dye or in which a fluorescent dye is dissolved, wherein said colored layer forms a fluorescent colored background for said image.
Claim 16
Dependent Claim
25 words
The thermosensitive recording material as claimed in claim 12, wherein said colored layer is overlaid on said thermosensitive coloring layer in said thermosensitive recording layer.
Claim 17
Dependent Claim
20 words
The thermosensitive recording material as claimed in claim 12, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 18
Dependent Claim
23 words
The thermosensitive recording material as claimed in claim 12, further comprising a barrier layer between said thermosensitive coloring layer and said colored layer.
Claim 19
Dependent Claim
26 words
The thermosensitive recording material as claimed in claim 12, further comprising a barrier layer provided on the side of said support opposite said thermosensitive recording layer.
Claim 20
Dependent Claim
20 words
The thermosensitive recording material as claimed in claim 12, further comprising a barrier layer provided on said thermosensitive recording layer.
Claim 21
Dependent Claim
20 words
The thermosensitive recording material as claimed in claim 12, wherein said thermosensitive coloring layer further comprises a fluorescent dye composition.
Claim 22
Dependent Claim
41 words
The thermosensitive recording material as claimed in claim 18, wherein the amount of said colored fluorescent dye composition in said thermosensitive coloring layer is in the range of 15 to 60 wt.% of the entire weight of said thermosensitive coloring layer.
Claim 23
Dependent Claim
39 words
The thermosensitive recording material as claimed in claim 12, wherein the amount of said colored fluorescent dye composition in said colored layer is in the range of 10 to 95 wt.% of the entire weight of said colored layer.
Claim 24
Dependent Claim
66 words
A thermosensitive recording material comprising: a support; and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive color system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 25
Dependent Claim
66 words
A thermosensitive recording material comprising: a support; and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive color system capable of producing a color upon application of heat thereto, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 26
Dependent Claim
19 words
The thermosensitive recording material as claimed in claim 21, further comrpising a barrier layer on said thermosensitive coloring layer.
Claim 27
Dependent Claim
23 words
A thermosensitive recording material as claimed in claim 21, further comprising a barrier layer between said thermosensitive coloring layer and said colored layer.
Claim 28
Dependent Claim
74 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition and a binder resin, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 29
Dependent Claim
74 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition and a binder resin, wherein said thermosensitive coloring layer is overlaid on said colored layer.
Claim 30
Dependent Claim
68 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color image upon application of heat thereto and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
Claim 31
Dependent Claim
68 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a color image upon application of heat thereto and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
Claim 32
Dependent Claim
73 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a coloring system capable of producing a colored image upon application of heat thereto and a colored fluorescent dye composition, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
Claim 33
Dependent Claim
73 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a coloring system capable of producing a colored image upon application of heat thereto and a colored fluorescent dye composition, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
Claim 34
Dependent Claim
72 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a colored image upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
Claim 35
Dependent Claim
72 words
A thermosensitive recording material comprising: a support, and a thermosensitive recording layer formed on one side of said support, said thermosensitive recording layer comprising (i) a thermosensitive coloring layer comprising a thermosensitive coloring system capable of producing a colored image upon application of heat thereto and a binder resin, and (ii) a colored layer comprising a colored fluorescent dye composition, wherein said colored layer forms a fluorescent colored background for said image.
References Cited (Backward Citations)
US4370370A
Cited
US4647951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |