US4614682A
Expired / Lapsed
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Thermosensitive image transfer recording medium
Assignee: Ricoh Co Ltd
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Filing: 1985-10-09
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Granted: 1986-09-30
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Expires: 2005-10-09
Abstract
Abstract A thermosensitive image transfer recording medium comprising a support material and a thermofusible ink layer formed thereon, which thermofusible ink layer comprises a dye component, a binder agent and a pigment having a needle-like crystal form, which is dispersed in a network form throughout the thermofusible ink layer.
Inventors
- 👤 Akira Suzuki
- 👤 Hideo Watanabe
- 👤 Mitsuru Hashimoto
- 👤 Nobuo Mochizuki
- 👤 Keishi Kubo
- 👤 Susumu Tatsumi
- 👤 Toshiyuki Kawanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:19
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/392; B41M5/395; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901; Y10T428/25; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
49 words
A thermosensitive image transfer recording medium comprising a support material and an thermofusible ink layer formed thereon, said thermofusible ink layer comprising a dye component, a pigment having a needle-like crystal form and a binder agent, said pigment being dispersed in a network form throughout said thermofusible ink layer.
Claim 2
Dependent Claim
49 words
A thermosensitive image transfer recording medium comprising a support material and an thermofusible ink layer formed thereon, said thermofusible ink layer comprising a dye component, a pigment having a needle-like crystal form and a binder agent, said pigment being dispersed in a network form throughout said thermofusible ink layer.
Claim 3
Dependent Claim
40 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein the length of said pigment is in the range of about 0.3 to 3 μm, the width and the thickness of said pigment is 0.3 μm or less.
Claim 4
Dependent Claim
40 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said pigment is selected from the group consisting of ochre, Chrome Yellow G, Phthalocyanine pigments, Lithol Red, BON Maroon Light, terra abla, needle zinc oxide, 2,7-bis[2-hydroxy-3-(2-chloro-phenylcarbamoyl)naphthalene-1-ylazo]-9-fluorenone and 4',4"-bis[2-hydroxy-3-(2,4-dimethylphenyl)-carbamoylnaphthalene-1-ylazo]-1,4-distyrylbenezene.
Claim 5
Dependent Claim
28 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein the thickness of said thermofusible ink layer is in the range of 1 to 10 μm.
Claim 6
Dependent Claim
35 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said pigment is contained in an amount of 0.5 to 10 parts by weight to 1 part by weight of said dye component.
Claim 7
Dependent Claim
42 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said dye component is selected from the group consisting of direct dyes, acid dyes, basic dyes, mordant dyes, sulfur dyes, building dyes, azoic dyes, oil dyes and thermosublimable disperse dyes.
Claim 8
Dependent Claim
35 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein the eutectic temperature of said dye component in combination of said binder agent is in the range of 50° C. to 140° C.
Claim 9
Dependent Claim
27 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein the particle size of said dye is smaller than the particle size of said pigment.
Claim 10
Dependent Claim
75 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said binder agent is selected from the group consisting of polyethylene, polyproylene, polystyrene, petroleum resin, acrylic resin, vinyl chloride resin, vinyl acetate resin, vinylidene chloride resin, polyvinyl alcohol, cellulose resin, polyamide, polyacetal, polycarbonate, polyester, fluorine-contained resin, silicone resin, natural rubber, rubber chloride, butadiene rubber, olefin rubber, phenolic resin, urea resin, melamine resin, polyimide and carnauba wax, montan wax, paraffin wax and microcrystalline wax.
Claim 11
Dependent Claim
38 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said support material is selected from the group consisting of polyester film, polypropylene film, polycarbonate film, cellulose triacetate film, polyimide film, glassine paper and condenser paper.
Claim 12
Dependent Claim
48 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said binder agent is a thermoplastic polycaprolactone having a number average molecular weight ranging from 1,000 to 100,000, having a repeated unit of --CH 2 CH 2 CH 2 CH 2 CH 2 COO-- n .
Claim 13
Dependent Claim
39 words
A thermosensitive image transfer recording medium as claimed in claim 11, wherein said thermofusible ink layer comprises 99 wt. % to 60 wt. % of said thermoplastic polycaprolactone and 1 wt. % to 40 wt. % of said dye.
Claim 14
Dependent Claim
53 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said binder agent is a combination of 5 to 30 parts by weight of a polycaprolactone having an average molecular weight ranging from 70,000 to 100,000 and 100 parts by weight of a polycaprolactone having an average molecular weight of 10,000.
Claim 15
Dependent Claim
40 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said thermofusible ink layer further comprising a plasticizer in an amount of 10 wt. % or less with respect to the total amount of said thermofusible ink layer.
Claim 16
Dependent Claim
26 words
A thermosensitive image transfer recording medium as claimed in claim 14, wherein said plasticizer is selected from the group consisting of dioctylphthalate, tricresyl phosphate and dibutylphthalate.
Claim 17
Dependent Claim
41 words
A thermosensitive image transfer recording medium as claimed in claim 1, wherein said thermofusible ink layer further comprising an extender pigment in an amount of 30 wt. % or less with respect to the total amount of said thermofusible ink layer.
Claim 18
Dependent Claim
34 words
A thermosensitive image transfer recording medium as claimed in claim 16, wherein said extender pigment is selected from the group consisting of silicic acid powder, calcium carbonate, magnesium carbonate, silica, kaolin and white carbon.
Claim 19
Dependent Claim
30 words
A thermosensitive image transfer recording medium as claimed in claim 1, further comprising an intermediate adhesive layer comprising a resin interposed between said support material and said thermofusible ink layer.
Claim 20
Dependent Claim
70 words
A thermosensitive image transfer recording medium as claimed in claim 18, wherein said resin of said intermediate adhesive layer is selected from the group consisting of polyethylene, polyproylene, polystyrene, petroleum resin, acrylic resin, vinyl chloride resin, vinyl acetate resin, vinylidene chloride resin, polyvinyl alcohol, cellulose resin, polyamide, polyacetal, polycarbonate, polyester, fluorine-contained resin, silicone resin, natural rubber, rubber chloride, butadiene rubber, olefin rubber, phenolic resin, urea resin, melamine resin and polyimide.
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) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |