REAR-SURFACE SUBSTRATE FOR HEAT TRANSFER IMAGE RECEPTION SHEET, AND HEAT TRANSFER IMAGE RECEPTION SHEET

摘要

To provide a rear face side substrate for a thermal transfer image-receiving sheet, the substrate making it possible to improve the transportability of the thermal transfer image-receiving sheet and improve the texture of the rear face side of the thermal transfer image-receiving sheet; and a thermal transfer image-receiving sheet having the rear face side substrate for the thermal transfer image-receiving sheet. A rear face side substrate (10) for a thermal transfer image-receiving sheet has a layered structure in which a first rear face side layer (1), a second rear face side layer (2), and a third rear face side layer (3) are layered in this order, wherein the first rear face side layer comprises a propylene-based polymer composition A containing at least a propylene-based polymer, the second rear face side layer comprises a propylene-based polymer composition B containing at least a propylene polymer, an antistatic agent and a masking agent, and the third rear face side layer comprises a propylene-based polymer composition (C) containing at least a propylene-based polymer, a three-dimensional center surface average roughness (SRa) of the third rear face side layer being in the range of from not less than 0.10 µm to not more than 1.50 µm, and the first rear face side layer, the second rear face side layer and the third rear face side layer being biaxially oriented.