US4633276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosensitive recording label
Assignee: Ricoh Electronics Inc
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Filing: 1985-08-29
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Granted: 1986-12-30
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Expires: 2005-08-29
Abstract
Abstract A thermosensitive recording label includes a substrate, a thermosensitive color-forming layer disposed on one side of the substrate, a protective layer disposed on the thermosensitive color-forming layer, a pressure-sensitive hot melt adhesive layer disposed on another side of the substrate and a releasable backing sheet disposed on the pressure-sensitive adhesive layer. A hot melt adhesive layer absent sufficient modifying resin to prevent migration thereof and unwanted color formation in the color-forming layer enables use of the hot melt adhesive in the label. In addition, the use of hot melt adhesive enables the labels to be placed on refrigerated beef products without discoloration of the beef beneath the label.
Inventors
- 👤 Tomoo Shibata
- 👤 Wissam J. Jurdi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/44; G; G09; G09F; G09F3/00; G09F3/02; G09F3/0291; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/1471; Y10T428/1476; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2883; Y10T428/2891
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
A thermosensitive recording label for use on beef products wrapped with plastic film comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on another side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin, selected from the group consisting of terpene resin, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration thereof into the thermosensitive color-forming layer, resulting in bleeding of the color formation in the thermosensitive color-forming layer; and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer. a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 2
Dependent Claim
153 words
A thermosensitive recording label for use on beef products wrapped with plastic film comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on another side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin, selected from the group consisting of terpene resin, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration thereof into the thermosensitive color-forming layer, resulting in bleeding of the color formation in the thermosensitive color-forming layer; and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer. a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 3
Dependent Claim
137 words
A thermosensitive recording for use on beef products wrapped with plastic film comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on another side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin, selected from the group consisting of terpene resins, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration of said modifying resin through the substrate causing unwanted color-formation in the thermosensitive color-forming layer; and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 4
Dependent Claim
137 words
A thermosensitive recording for use on beef products wrapped with plastic film comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on another side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin, selected from the group consisting of terpene resins, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration of said modifying resin through the substrate causing unwanted color-formation in the thermosensitive color-forming layer; and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 5
Dependent Claim
41 words
The thermosensitive recording label according to claim 1 or 2 wherein the pressure-sensitive hot melt adhesive layer comprises at least one adhesive agent selected from the group consisting of a styrene-butadiene rubber hot melt adhesive and an acrylic hot melt adhesive.
Claim 6
Dependent Claim
26 words
The thermosensitive recording label according to claim 3 wherein the pressure-sensitive hot melt adhesive layer has a transition glass temperature of at most about 50° C.
Claim 7
Dependent Claim
29 words
The thermosensitive recording label according to claim 4 wherein the pressure-sensitive hot melt adhesive layer has a transition glass temperature of between about -17° C. and about 15° C.
Claim 8
Dependent Claim
32 words
The thermosensitive recording label according to claim 1 or 2 wherein said modifying resin is selected from the group consisting of terpene resins, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes.
Claim 9
Dependent Claim
30 words
The thermosensitive recording label according to claim 6 wherein the pressure-sensitive hot melt adhesive layer has a thickness from about 15 μm (0.6 mil) to about 23 μm (0.9 mil).
Claim 10
Dependent Claim
152 words
A thermosensitive recording label comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on an opposite side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin selected from the group consisting of terpene resins, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration of said modifying resins through the substrate causing unwanted color formation in the thermosensitive color-forming layer, said pressure-sensitive hot melt adhesive layer having a thickness from about 15 μm (0.6 mil) to about 23 μm (0.9 mil); and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 11
Dependent Claim
152 words
A thermosensitive recording label comprising: a substrate; a thermosensitive color-forming layer disposed on one side of said substrate, said thermosensitive color-forming layer comprising a colorless or light-colored leuco dye and acidic substance capable of causing said leuco dye to undergo color formation upon heating of the thermosensitive recording label; a protective layer disposed on said thermosensitive color-forming layer; a pressure-sensitive hot melt adhesive layer disposed on an opposite side of said substrate, said pressure-sensitive hot melt adhesive being absent sufficient modifying resin selected from the group consisting of terpene resins, rosin resins, hydrocarbon resins, phenolic resins and ketone aldehydes, to prevent migration of said modifying resins through the substrate causing unwanted color formation in the thermosensitive color-forming layer, said pressure-sensitive hot melt adhesive layer having a thickness from about 15 μm (0.6 mil) to about 23 μm (0.9 mil); and, a releasable backing sheet disposed on said pressure-sensitive hot melt adhesive layer.
Claim 12
Dependent Claim
53 words
The thermosensitive recording label according to claim 8 wherein the adhesive agent selected enables the use of the thermosensitive recording label on refrigerated beef products wrapped with a plastic stretch film wrap selected from the group consisting of polyvinylchloride, polyethylene and polyolefin without subsequent discoloration of the beef beneath the thermosensitive recording label.
Claim 13
Dependent Claim
49 words
The thermosensitive recording label according to claim 9 wherein the hot melt adhesive layer includes a hot melt adhesive having a transition glass temperature of at most about 50° C. for enabling adhesion to the plastic stretch film wrap at temperatures from about -10° C. to about 15° C.
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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |