EP0289161A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Receiver sheet
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1988-04-12
•
Granted: —
•
Expires: 2008-04-12
Abstract
Abstract A thermal transfer printing (TTP) receiver sheet has a receiving layer comprising an amorphous synthetic thermoplastics polymer.
Inventors
- 👤 Richard Anthony Marbrow
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:35
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/26; B41M5/40; B41M5/41; B41M2205/00; B41M2205/32; B41M5/5263; B41M5/5272; G; G05; G05B; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41435; G05B2219/42; G05B2219/42337; G05B2219/42352; G05B2219/43; G05B2219/43162; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10S430/00; Y10S430/142; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/25; Y10T428/258; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
84 words
A thermal transfer printing receiver sheet for use in association with a compatible donor sheet, the receiver sheet comprising a supporting substrate having, on at least one surface therof, a dye-receptive receiving layer to receive a dye thermally transferred from the donor sheet, characterised in that a) the substrate comprises an opaque, molecularly oriented film of a synthetic linear polyester, and b) the at least one receiving layer has a thickness not exceeding 7.5 µm, and comprises a dye-receptive, essentially amorphous, synthetic thermoplastics polymer
Claim 2
Dependent Claim
84 words
A thermal transfer printing receiver sheet for use in association with a compatible donor sheet, the receiver sheet comprising a supporting substrate having, on at least one surface therof, a dye-receptive receiving layer to receive a dye thermally transferred from the donor sheet, characterised in that a) the substrate comprises an opaque, molecularly oriented film of a synthetic linear polyester, and b) the at least one receiving layer has a thickness not exceeding 7.5 µm, and comprises a dye-receptive, essentially amorphous, synthetic thermoplastics polymer
Claim 3
Dependent Claim
12 words
A receiver sheet according to claim 1 wherein the substrate is voided.
Claim 4
Dependent Claim
28 words
A receiver sheet according to claim 2 wherein the substrate contains an effective amount of a voiding agent comprising an incompatible resin filler or a particulate inorganic filler.
Claim 5
Dependent Claim
37 words
A receiver sheet according to claim 3 wherein the average particle size of the inorganic filler is from 0.1 to 10.0 µm, the actual particle size of 99.9% by number of the particles not exceeding 30 µm.
Claim 6
Dependent Claim
17 words
A receiver sheet according to either of claims 3 and 4 wherein the filler comprises barium sulphate.
Claim 7
Dependent Claim
24 words
A receiver sheet according to any one of the preceding claims wherein the thickness of the receiving layer is from 0.5 to 5.0 µm.
Claim 8
Dependent Claim
18 words
A receiver sheet according to any one of the preceding claims wherein the dye-receptive polymer comprises a copolyester.
Claim 9
Dependent Claim
20 words
A receiver sheet according to claim 7 wherein the dye-receptive polymer comprises a copolymer of ethylene terephthalate and ethylene isophthalate.
Claim 10
Dependent Claim
21 words
A receiver sheet according to any one of the preceding claims additionally comprising a release medium associated with the receiving layer.
Claim 11
Independent Claim
87 words
A method of producing a thermal transfer printing receiver sheet for use in association with a compatible donor sheet, comprising forming a supporting substrate and providing, on at least one surface thereof, a dye-receptive receiving layer to receive a dye thermally transferred from the donor sheet, characterised in that a) the substrate comprises an opaque, molecularly oriented film of a synthetic linear polyester, and b) the at least one receiving layer has a thickness not exceeding 7.5 µm, and comprises a dye-receptive, essentially amorphous, synthetic thermoplastics polymer.
Claim 12
Independent Claim
87 words
A method of producing a thermal transfer printing receiver sheet for use in association with a compatible donor sheet, comprising forming a supporting substrate and providing, on at least one surface thereof, a dye-receptive receiving layer to receive a dye thermally transferred from the donor sheet, characterised in that a) the substrate comprises an opaque, molecularly oriented film of a synthetic linear polyester, and b) the at least one receiving layer has a thickness not exceeding 7.5 µm, and comprises a dye-receptive, essentially amorphous, synthetic thermoplastics polymer.
Claim 13
Dependent Claim
33 words
A method according to claim 10 comprising incorporating in the substrate an effective amount of a voiding agent comprising an incompatible resin filler or a particulate inorganic filler to form a voided substrate.
Claim 14
Independent Claim
43 words
A method according to either of claims 10 and 11 comprising forming the receiver sheet by coextruding the substrate and dye-receptive polymers to form a composite sheet and thereafter stretching the composite sheet to effect molecular orientation of at least the substrate polymer.
Claim 15
Dependent Claim
27 words
A method according to claim 12 comprising heat-setting the oriented sheet under dimensional restraint at a temperature greater than the crystalline melting temperature of the dye-receptive polymer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.