# US 5,350,733 A · Receiving element for use in thermal dye transfer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,350,733 A - Document ID: US5350733A - Status: Granted - Kind: A - Application number: 08/205,532 - Filed: 1994-03-04 - Granted: 1994-09-27 - Earliest claimed: 1994-03-04 - Assignees: Eastman Kodak Company - Inventors: Bruce C. Campbell; William A. Mruk - Web page: https://patentgrep.com/patent/US5350733A ## CPC - B41M 5/41: Base layers {supports or substrates} - B41M 2205/32: Thermal receivers - Y10S 428/91: Product with molecular orientation - Y10S 428/913: Material designed to be responsive to temperature, light, moisture - Y10S 428/914: Transfer or decalcomania - Y10T 428/249978: Voids specified as micro - Y10T 428/249987: With nonvoid component of specified composition - Y10T 428/249989: Integrally formed skin - Y10T 428/277: Cellulosic substrate - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Thermal dye transfer receiving elements are disclosed comprising a base having thereon a dye image-receiving layer, the base comprising a composite film laminated to a support, the dye image-receiving layer being on the composite film side of the base. The composite film comprises a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface (skin) layer having a thickness of about 3 to about 6 .mu.m, the surface layer containing at least about 0.5 g/m.sup.2 of TiO.sub.2. ## Claims ### Claim 1 A dye-receiving element for thermal dye transfer comprising a base having thereon a dye image-receiving layer, said base comprising a composite film laminated to a support, said dye image-receiving layer being on the composite film side of said base, said composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer having a thickness of about 3 to about 6 .mu.m, and said surface layer containing at least about 0.5 g/m.sup.2 of TiO.sub.2. ### Claim 2 (depends on 1) The element of claim 1 wherein the thickness of said composite film is from 30 to 70 .mu.m. ### Claim 3 (depends on 1) The element of claim 1 wherein said core layer of said composite film comprises from 30 to 85% of the thickness of said composite film. ### Claim 4 (depends on 1) The element of claim 1 wherein the overall density of said composite film is from 0.3 to 0.7 g/cm.sup.3. ### Claim 5 (depends on 1) The element of claim 1 wherein said composite film comprises a microvoided thermoplastic core layer having a substantially void-free thermoplastic surface layer on each side thereof. ### Claim 6 (depends on 1) The element of claim 1 wherein said TiO.sub.2 is in rutile form. ### Claim 7 (depends on 1) The element of claim 1 wherein said composite film comprises a microvoided and oriented polypropylene core layer with a surface layer of non-microvoided oriented polypropylene on each side. ### Claim 8 (depends on 1) The element of claim 1 wherein said support comprises cellulose fiber paper. ### Claim 9 (depends on 8) The element of claim 8 wherein said paper support is from 120 to 250 .mu.m thick and the composite film is from 30 to 50 .mu.m thick. ### Claim 10 (depends on 8) The element of claim 8 further comprising a polyolefin backing layer on the side of said support opposite to said composite film. ### Claim 11 (depends on 10) The element of claim 10 wherein said polyolefin backing layer is present at a coverage of from 35 to 75 g/m.sup.2. ### Claim 12 A process of forming a dye transfer image comprising: a) imagewise-heating a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a binder, and b) transferring a dye image to a dye-receiving element comprising a base having thereon a dye image-receiving layer to form said dye transfer image, wherein said dye-receiving element base comprises a composite film laminated to a support, said dye image-receiving layer being on the composite film side of said base, said composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer having a thickness of about 3 to about 6 .mu.m, and said surface layer containing at least about 0.5 g/m.sup.2 of TiO.sub.2. ### Claim 13 (depends on 12) The process of claim 12 wherein said composite film comprises a microvoided thermoplastic core layer having a substantially void-free thermoplastic surface layer on each side thereof, the thickness of said composite film being from 30 to 70 .mu.m. ### Claim 14 (depends on 12) The process of claim 12 wherein said support comprises cellulose fiber paper from 120 to 250 .mu.m thick and said composite film is from 30 to 50 .mu.m thick and comprises a microvoided and oriented polypropylene core layer with a surface layer of non-microvoided oriented polypropylene on each side. ### Claim 15 A thermal dye transfer assemblage comprising: a) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a binder, and b) a dye-receiving element comprising a base having thereon a dye image-receiving layer, said dye-receiving element being in a superposed relationship with said dye-donor element so that said dye layer is in contact with said dye image-receiving layer, wherein said dye-receiving element base comprises a composite film laminated to a support, said dye image-receiving layer being on the composite film side of said base, said composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer having a thickness of about 3 to about 6 .mu.m, and said surface layer containing at least about 0.5 g/m.sup.2 of TiO.sub.2. ### Claim 16 (depends on 15) The assemblage of claim 15 wherein said composite film comprises a microvoided thermoplastic core layer having a substantially void-free thermoplastic surface layer on each side thereof, the thickness of said composite film being from 30 to 70 .mu.m. ### Claim 17 (depends on 15) The assemblage of claim 15 wherein said support comprises cellulose fiber paper from 120 to 250 .mu.m thick and said composite film is from 30 to 50 .mu.m thick and comprises a microvoided and oriented polypropylene core layer with a surface layer of non-microvoided oriented polypropylene on each side.