Assembly for use in a process for making selective transfers to xerographic images on sheet material

• US 5,087,495 A
• Filed: 04/07/1989
• Issued: 02/11/1992
• Est. Priority Date: 02/05/1985
• Status: Expired due to Term

• Current Assignee: PaperDirect, Inc. (Empire Financial Corp)
• Original Assignee: Esselte Letraset Ltd. (ACCO Brands Incorporated)
• Inventors: Nelson, Marshall A.
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US07/334,924
• Time in Patent Office: 1,040 Days
• Field of Search: 428/46, 428/200, 428/121, 428/203
• US Class Current: 428/46
• CPC Class Codes: B32B 37/1284 Application of adhesive
• CPC Class Codes: B32B 38/10 Removing layers, or parts of layers, mechanically or chemically
• CPC Class Codes: B41M 7/0027 using protective coatings or layers by lamination or by fusion of the coatings or layers
• CPC Class Codes: G03G 8/00 Layers covering the final reproduction, e.g. for protecting, for writing thereon
• CPC Class Codes: H05K 3/046 by selective transfer or selective detachment of a conductive layer
• CPC Class Codes: Y10S 283/902 Anti-photocopy
• CPC Class Codes: Y10T 428/162 Transparent or translucent layer or section
• CPC Class Codes: Y10T 428/2419 Fold at edge
• CPC Class Codes: Y10T 428/24843 with heat sealable or heat releasable adhesive layer
• CPC Class Codes: Y10T 428/24868 Translucent outer layer

Abstract

The present invention is directed to a transfer sheet for selectively transferring a transfer layer to xerographic images on a receiving substrate such as paper. The preferred transfer sheet comprises, in successive layers, a carrier film, a metallic film and an adhesive, the adhesive containing a dispersion of 0.5 micron or larger particulate material. In the preferred embodiment, the invention comprising an assembly for use in the process of making a selective transfer to xerographic images on sheet material. The assembly comprises a backing sheet, a transfer sheet and a connector (such as a length of adhesive tape) securing the backing sheet to the transfer sheet at the leading edge of the assembly.

Claims

1. An assembly for use in a process for making selective transfers to xerographic images on sheet material by passing it, beginning with a leading edge, between heated rollers, the assembly comprising:

a) a selective transfer sheet comprising a carrier film and a transfer layer affixed to the carrier film, said transfer layer being suitable to effect selective transfer to cover the xerographic images as the assembly passes between the heated rollers,

b) a backing sheet, and

c) a connector securing the carrier film of the selective transfer sheet to the backing sheet only at the leading edge of the assembly.

2. The assembly of claim 1 wherein the connector comprises a length of pressure sensitive adhesive tape.

3. The assembly of claim 1 wherein the connector comprises a section of the backing sheet folded over and adhered to the carrier film of the transfer sheet.

4. The assembly of claim 3 wherein the backing sheet is perforated at the location where it is folded over to be adhered to the carrier film.

5. The assembly of claim 1 wherein the leading edge of the assembly is coated on its outer surfaces with a release coat of silicone.

6. The assembly of claim 1 wherein the transfer layer is affixed to the side of the carrier film facing the backing sheet.

7. The assembly of claim 1 wherein the transfer sheet further comprises an adhesive layer on the transfer layer opposite the carrier film.

8. The assembly of claim 1 wherein the transfer layer comprises a vacuum deposited metallic layer.

9. The assembly of claim 1 wherein the transfer layer comprises a color pigmented layer.

10. The assembly of claim 1 wherein the leading edge of the assembly is coated on at least one of its outer surfaces with a release coat of silicone.