US4273602A
Expired / Lapsed
US
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Heat-sensitive recording material
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1979-02-06
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Granted: 1981-06-16
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Expires: 1999-02-06
Abstract
Abstract A heat-sensitive recording material is disclosed which comprises a support sheet of 5-40 mu in thickness having thereon a heat-sensitive transfer layer containing a phenolic material, a colorless or pale-colored chromogenic material which forms a color with said phenolic material upon application of heat and a heat fusible material having a melting point of 40 DEG -150 DEG C. and an image receiving sheet superposed on the surface of said layer which are made into one integral sheet by pressing. Using this recording material, sufficiently high density of record can be obtained even by low heat energy, and the background (non-record portion) forms substantially no color to result in high contrast of record.
Inventors
- 👤 Takao Kosaka
- 👤 Yukio Tahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:37
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38235; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24893; Y10T428/24901; Y10T428/24934
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
146 words
Imprinting-transferring type heat-sensitive recording material which comprises a support sheet of 5-40μ in thickness having thereon a transferable heat-sensitive chromogenic layer comprising a phenolic material, a colorless or pale-colored chromogenic material which reacts with said phenolic material upon application of heat to form color and heat fusible material having a melting point of 40°-150° C. and an image receiving sheet having thereon an image receiving layer containing a receiving agent having tackiness upon application of heat thereon, which is bonded by application of pressure onto the support sheet in such a manner that said heat sensitive chromogenic layer and said image receiving layer are in contact with each other, said heat fusible material being one which (1) increases the sensitivity of the chromogenic material for color formation, (2) bonds the support sheet to the receiving sheet and (3) transfers the heat-imposed portions of the transfer layer.
Claim 2
Dependent Claim
146 words
Imprinting-transferring type heat-sensitive recording material which comprises a support sheet of 5-40μ in thickness having thereon a transferable heat-sensitive chromogenic layer comprising a phenolic material, a colorless or pale-colored chromogenic material which reacts with said phenolic material upon application of heat to form color and heat fusible material having a melting point of 40°-150° C. and an image receiving sheet having thereon an image receiving layer containing a receiving agent having tackiness upon application of heat thereon, which is bonded by application of pressure onto the support sheet in such a manner that said heat sensitive chromogenic layer and said image receiving layer are in contact with each other, said heat fusible material being one which (1) increases the sensitivity of the chromogenic material for color formation, (2) bonds the support sheet to the receiving sheet and (3) transfers the heat-imposed portions of the transfer layer.
Claim 3
Dependent Claim
17 words
A heat-sensitive recording material according to claim 1, wherein said image receiving sheet is a synthetic paper.
Claim 4
Dependent Claim
39 words
A heat-sensitive recording material according to claim 1, wherein the receiving agent is selected from paraffin, micro wax, carnauba wax, synthetic wax, fatty acid amides, polyvinyl chloride, acrylic resin, rosin-modified maleic acid resin, rosin-modified phenol resin and chlorinated rubber.
Claim 5
Dependent Claim
15 words
A heat-sensitive recording material according to claim 1 wherein the receiving agent is a polyolefin.
Claim 6
Dependent Claim
15 words
A heat-sensitive recording material according to claim 1 wherein the receiving agent is polyethylene wax.
Claim 7
Dependent Claim
54 words
A heat-sensitive recording material according to claim 1, wherein a heat-sensitive chromogenic layer which comprises a phenolic material and a colorless or pale-colored chromogenic material which reacts with said phenolic material upon application of heat to form color is provided on the surface of the support sheet opposite to the transferable heat-sensitive chromogenic layer.
Claim 8
Dependent Claim
16 words
A heat-sensitive recording material according to claim 1, wherein the support sheet is transparent or translucent.
Claim 9
Dependent Claim
33 words
A heat-sensitive recording material according to claim 1, wherein the transferable heat-sensitive chromogenic layer contains the chromogenic material and the phenolic material in such a ratio of the former: the latter of 1:1-10.
Claim 10
Dependent Claim
24 words
A heat-sensitive recording material according to claim 1, wherein the amount of the heat fusible material is 30-300% by weight of the phenolic material.
Claim 11
Dependent Claim
51 words
A heat sensitive recording material according to claim 1, wherein the transferable heat-sensitive chromogenic layer contains the chromogenic material and the phenolic material in the ratio of the former to the latter of 1:1-10 and wherein the amount of the heat fusible material is 30-300% by weight of the phenolic material.
Claim 12
Independent Claim
175 words
A method for recording images which comprises providing an imprinting-transferring type heat-sensitive recording material which comprises a support sheet of 5-40μ in thickness having thereon a transferable heat-sensitive chromogenic layer comprising a phenolic material, a colorless or pale-colored chromogenic material which reacts with said phenolic material upon application of heat to form color and heat fusible material having a melting point of 40°-150° C. and an image receiving sheet having thereon an image receiving layer containing a receiving agent having tackiness upon application of heat thereon, which is bonded by application of pressure onto the support sheet in such a manner that said heat sensitive chromogenic layer and said image receiving layer are in contact with each other, said heat fusible material being one which (1) increases the sensitivity of the chromogenic material for color formation, (2) bonds the support sheet to the receiving sheet and (3) transfers the heat-imposed portions of the transfer layer, heat-imprinting this recording material and then separating the two sheets to transfer the heat-imprinted images to the image receiving sheet.
Claim 13
Independent Claim
175 words
A method for recording images which comprises providing an imprinting-transferring type heat-sensitive recording material which comprises a support sheet of 5-40μ in thickness having thereon a transferable heat-sensitive chromogenic layer comprising a phenolic material, a colorless or pale-colored chromogenic material which reacts with said phenolic material upon application of heat to form color and heat fusible material having a melting point of 40°-150° C. and an image receiving sheet having thereon an image receiving layer containing a receiving agent having tackiness upon application of heat thereon, which is bonded by application of pressure onto the support sheet in such a manner that said heat sensitive chromogenic layer and said image receiving layer are in contact with each other, said heat fusible material being one which (1) increases the sensitivity of the chromogenic material for color formation, (2) bonds the support sheet to the receiving sheet and (3) transfers the heat-imposed portions of the transfer layer, heat-imprinting this recording material and then separating the two sheets to transfer the heat-imprinted images to the image receiving sheet.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |