Which printing method is limited to certain synthetic fabrics due to the dye types used?

Transfer printing is a method that involves applying dye onto a special paper, which is then transferred onto the fabric through heat and pressure. This technique is particularly effective for synthetic fabrics because the dyes used in transfer printing are often designed to bond with the polymer fibers found in materials such as polyester.

The limitation arises because the types of dyes used in this process, specifically sublimation dyes, only work effectively with certain synthetic fibers. When the process is applied to natural fibers or other types of fabrics that do not react well to sublimation, the results may be unsatisfactory, resulting in poor color transfer or fading.

In contrast, other methods such as yarn dyeing, block printing, and roller printing do not share this restriction to specific fabric types. Yarn dyeing can be applied to both natural and synthetic fibers, block printing is versatile enough to be used on various materials, and roller printing can also be executed on a wide range of textiles. Thus, transfer printing's effectiveness and limitations are defined by the chemical interaction between the dye and the fabric, making it unique among the choices presented.