Patent US5209962A successfully refreshed from Google Patents.
US5209962A
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US
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Thermal image transfer process using image receiving sheet
Assignee: Fujifilm Holdings Corp
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Filing: 1991-12-12
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Granted: 1993-05-11
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Expires: 2011-12-12
Abstract
Abstract A thermal image transfer process uses an image receiving sheet. The process comprises imagewise heating a heat-sensitive sheet containing a wax to transfer the wax from the heat-sensitive sheet to the image receiving sheet. The image receiving sheet comprises a support and an image receiving layer provided thereon. The image receiving layer contains a polyolefin resin as a binder. In the process of the present invention, the image receiving layer further contains hydrophobic particles having an average particle size in the range of 2 μm to 15 μm. A conductive layer is preferably provided between the support and the image receiving layer. The conductive layer contains conductive oxide particles having an average particle size of not more than 0.5 μm. The surface resistance of the conductive layer is not more than 10 13 Ω.
Inventors
- 👤 Takashi Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:48
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5254; B41M2205/00; B41M2205/32; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A thermal image transfer process comprising applying heat, in a pattern corresponding to an image, to a heat-sensitive sheet containing a wax to transfer the wax from the heat-sensitive sheet to an image receiving sheet, which comprises a support and an image receiving layer provided thereon on at least one side of the support to receive an image, said image receiving layer containing a polyolefin resin as a binder, wherein the image receiving layer further contains hydrophobic particles having an average particle size in the range of 2 μm to 15 μm.
Claim 2
Dependent Claim
92 words
A thermal image transfer process comprising applying heat, in a pattern corresponding to an image, to a heat-sensitive sheet containing a wax to transfer the wax from the heat-sensitive sheet to an image receiving sheet, which comprises a support and an image receiving layer provided thereon on at least one side of the support to receive an image, said image receiving layer containing a polyolefin resin as a binder, wherein the image receiving layer further contains hydrophobic particles having an average particle size in the range of 2 μm to 15 μm.
Claim 3
Dependent Claim
54 words
The process as claimed in claim 1, wherein a conductive layer is provided between the support and the image receiving layer, said conductive layer containing conductive oxide particles having an average particle size of not more than 0.5 μm, and the surface resistance of said conductive layer being not more than 10 13 Ω.
Claim 4
Dependent Claim
27 words
The process as claimed in claim 1, wherein the glass transition points of the polyolefin resin binder and the hydrophobic particles are not lower than 40° C.
Claim 5
Dependent Claim
27 words
The process as claimed in claim 1, wherein the glass transition points of the polyolefin resin binder and the hydrophobic particles are not lower than 60° C.
Claim 6
Dependent Claim
27 words
The process as claimed in claim 1, wherein the glass transition points of the polyolefin resin binder and the hydrophobic particles are not lower than 80° C.
Claim 7
Dependent Claim
21 words
The process as claimed in claim 1, wherein the polyolefin resin binder has a molecular weight of not less than 20,000.
Claim 8
Dependent Claim
34 words
The process as claimed in claim 1, wherein the image receiving layer further contains particles of a polyolefin resin having a molecular weight in the range of 1,000 to 6,000 as a sticking agent.
Claim 9
Dependent Claim
28 words
The process as claimed in claim 7 wherein the particles of the polyolefin resin have an average particle size in the range of 1 μm to 3 μm.
Claim 10
Dependent Claim
58 words
The process as claimed in claim 1, wherein the polyolefin resin binder is a copolymer made of a hydrophobic olefin having no hydrophilic group and a hydrophilic olefin having a hydrophilic group, and the amounts of the hydrophobic and hydrophilic olefins contained in the copolymer are 80 to 90 weight percent and 10 to 20 weight percent respectively.
Claim 11
Dependent Claim
31 words
The process as claimed in claim 1, wherein the average particle size of the hydrophobic particles is 8 times to 30 times as large as the thickness of the polyolefin resin.
Claim 12
Dependent Claim
30 words
The process as claimed in claim 1, wherein the process is fed with the image receiving sheet from a tray in which ten or more image receiving sheets are stocked.
Claim 13
Dependent Claim
21 words
The process as claimed in claim 1, wherein an undercoating layer is provided between the support and the image receiving layer.
Claim 14
Dependent Claim
20 words
The process as claimed in claim 2, wherein an undercoating layer is provided between the support and the conductive layer.
References Cited (Backward Citations)
US5059580A
Cited
US5098883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |