US4880768A
Expired / Lapsed
US
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Sublimation type thermosensitive image transfer recording medium
Assignee: Ricoh Co Ltd
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Filing: 1988-09-07
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Granted: 1989-11-14
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Expires: 2008-09-07
Abstract
Abstract A sublimation type thermosensitive image transfer recording medium which can be used in repetition, comprising a support; a dye supplying layer formed on the support, comprising a sublimable dye and at least one binder agent in which the sublimable dye is dissolved or dispersed; and an image transfer facilitating layer formed on the dye supplying layer, comprising the sublimable dye and at least one organic binder agent in which the sublimable dye is dissolved or dispersed, the dye supplying layer and the image transfer facilitating layer being structured in such a manner that when the dye supplying layer and the image transfer facilitating layer are separately formed on a substrate, and the layers are separately superimposed on the same receiving sheet, with application of an equal quantity of thermal energy thereto, the amount (weight/unit time.unit area) of the sublimable dye transferred from the dye supplying layer to the receiving sheet is greater than the amount (weight/unit time.unit area) of the sublimable dye transferred from the image transfer facilitating layer to the receiving sheet.
Inventors
- 👤 Hidehiro Mochizuki
- 👤 Masanaga Imamura
- 👤 Akira Suzuki
- 👤 Masaru Shimada
- 👤 Hiroyuki Uemura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/38228; B41M5/392; B41M5/395; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S430/00; Y10S430/146; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
142 words
A sublimation type thermosensitive image transfer recording medium comprising: a support; a dye supplying layer formed on said support, comprising a sublimable dye and at least one binder agent in which said sublimable dye is dissolved or dispersed; and an image transfer facilitating layer formed on said dye supplying layer, comprising said sublimable dye and at least one organic binder agent in which said sublimable dye is dissolved or dispersed, said dye supplying layer and said image transfer facilitating layer being constructed in such a manner that (1) the concentration of said sublimable dye in said dye supplying layer is made greater than that of said sublimable dye in said image transfer facilitating layer or (2) the diffusion coefficient of said sublimable dye in said dye supplying layer is greater than that of said sublimable dye in said image transfer facilitating layer.
Claim 2
Dependent Claim
142 words
A sublimation type thermosensitive image transfer recording medium comprising: a support; a dye supplying layer formed on said support, comprising a sublimable dye and at least one binder agent in which said sublimable dye is dissolved or dispersed; and an image transfer facilitating layer formed on said dye supplying layer, comprising said sublimable dye and at least one organic binder agent in which said sublimable dye is dissolved or dispersed, said dye supplying layer and said image transfer facilitating layer being constructed in such a manner that (1) the concentration of said sublimable dye in said dye supplying layer is made greater than that of said sublimable dye in said image transfer facilitating layer or (2) the diffusion coefficient of said sublimable dye in said dye supplying layer is greater than that of said sublimable dye in said image transfer facilitating layer.
Claim 3
Dependent Claim
42 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein the concentration of said sublimable dye in said dye supplying layer is 1.1 to 5 times the concentration of said sublimable dye in said image transfer facilitating layer.
Claim 4
Dependent Claim
42 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 2, wherein the concentration of said sublimable dye in said dye supplying layer is 1.5 to 3 times the concentration of said sublimable dye in said image transfer facilitating layer.
Claim 5
Dependent Claim
35 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein the concentration of said sublimable dye in said dye supplying layer is in the range of 5 wt.% to 80 wt.%.
Claim 6
Dependent Claim
36 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein the concentration of said sublimable dye in said image transfer facilitating layer is in the range of 5 wt.% to 80 wt.%.
Claim 7
Dependent Claim
38 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 5, wherein the concentration of said sublimable dye in said image transfer facilitating layer is in the range of about 10 wt.% to about 60 wt.%.
Claim 8
Dependent Claim
53 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said organic binder agent for said image transfer facilitating layer has a greater capability of bonding with said sublimable dye than the capability of said organic binder agent for said dye supplying layer of bonding with said sublimable dye.
Claim 9
Dependent Claim
53 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said organic binder agent for said dye supplying layer has a lower glass transition temperature or a lower softening point than the glass transition temperature or softening point of said organic binder agent for said image transfer facilitating layer.
Claim 10
Dependent Claim
66 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 8, wherein said organic binder agent for said image facilitating layer is selected from the group consisting of vinyl chloride resin, vinyl acetate resin, polyamide, polyethylene, polycarbonate, polystyrene, polypropylene, acrylic resin, phenolic resin, polyester, polyurethane, epoxy resin, silicone resin, fluorine-contained resin, butyral resin, melamine resin, natural rubber, synthetic rubber, polyvinyl alcohol, and cellulose resins.
Claim 11
Dependent Claim
42 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 8, wherein said organic binder agent for said dye supplying layer has a glass transition temperature of 0° C. or less or a softening point of 60° C. or less.
Claim 12
Dependent Claim
50 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said dye supplying layer further comprises a plasticizer which is compatible with at least one organic binder agent contained therein, and is not compatible with any organic binder agents contained in said image transfer facilitating layer.
Claim 13
Dependent Claim
43 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 11, wherein the amount of said plasticizer is in the range of 10 wt.% to 100 wt.% to the amount of said organic binder agent contained in said dye supplying layer.
Claim 14
Dependent Claim
23 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said dye supplying layer further comprises a wax component.
Claim 15
Dependent Claim
44 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 13, wherein said wax component is selected from the group consisting of vegetable waxes, animal waxes, mineral waxes, petroleum waxes, hydrocarbon type waxes, hydrogenated waxes, fatty acids, acid amides, esters and ketones.
Claim 16
Dependent Claim
50 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 13, wherein the amount of said wax component is in the range of 0.1 to 10 parts by weight to 1 part by weight of the resin components including said organic binder agent in said dye supplying layer.
Claim 17
Dependent Claim
30 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said sublimable dye is a dye which is volatilized or sublimed at 60° C. or above.
Claim 18
Dependent Claim
31 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 16, wherein said sublimable dye is selected from the group consisting of a disperse dye and an oil-soluble dye.
Claim 19
Dependent Claim
67 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 17, wherein said dispersed dye is selected from the group consisting of C.I. Disperse Yellow 1, 3, 8, 9, 16, 41, 54, 60, 77 and 116; C.I. Disperse Red 1, 4, 6, 11, 15, 17, 55, 59, 60, 73 and 83; C.I. Disperse Blue 3, 14, 19, 26, 56, 60, 64, 72, 99 and 108.
Claim 20
Dependent Claim
44 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 17, wherein said oil-soluble dye is selected from the group consisting of C.I. Solvent Yellow 77 and 116; C.I. Solvent Red 23, 25 and 27; and Solvent Blue 36, 83 and 105.
Claim 21
Dependent Claim
44 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said dye supplying layer has a thickness ranging from 0.1 μm to 20 μm, and said image transfer facilitating layer has a thickness anging from 0.05 μm to 5 μm.
Claim 22
Dependent Claim
40 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said support is made of a material selected from the group consisting of condenser paper, polyester film, polystyrene film, polysulfone film, polyimide film and polyamide film.
Claim 23
Dependent Claim
29 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said support is made of a material which absorbs laser beams to generate heat therefrom.
Claim 24
Dependent Claim
33 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 1, wherein said support is made of a material which generates Joule's heat when electric current is caused to pass therethough.
Claim 25
Dependent Claim
25 words
The sublimation type thermosensitive image transfer recording medium as claimed in claim 23, wherein said material comprises an electroconductive material dispersed in an insulating material.
Claim 26
Dependent Claim
77 words
A thermosensitive image transfer recording process comprising the steps of: superimposing the sublimation type thermosensitive image transfer recording medium as claimed in claim 1 on a receiving sheet; and applying heat imagewise to said sublimation type thermosensitive image transfer recording medium so as to imagewise transfer said sublimable dye from said recording medium to said receiving sheet by a heat application recording means as said recording medium and said receiving sheet are moved at an equal speed.
Claim 27
Dependent Claim
93 words
A thermosensitive image transfer recording process comprising the steps of: superimposing the sublimation type thermosensitive image transfer recording medium as claimed in claim 1 on a receiving sheet; and applying heat imagewise to said sublimation type thermosensitive image transfer recording medium so as to imagewise transfer said sublimable dye from said recording medium to said receiving sheet by a heat application recording means as said recording medium and said receiving sheet are moved in such a manner that the running speed of said recording medium is smaller than that of said receiving sheet.
References Cited (Backward Citations)
US3647503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |