What is a common characteristic of block printed wallpaper?

Block printed wallpaper is characterized by its traditional manufacturing technique, which involves the manual application of ink using carved wooden stamps. This method allows for unique and often intricate designs to be created with each impression, leading to variations that add to the charm and appeal of the wallpaper.

The process of block printing reflects a rich artisanal tradition and involves several steps: first, the design is carved into a block of wood, then ink is applied to the block, and finally, the block is pressed onto the wallpaper material. This results in a tactile, textured feel that is distinct from other printing methods.

The other options do not accurately describe the nature of block printed wallpaper. While modern wallpaper may be produced by machine or use various technologies, block printing specifically emphasizes manual craftsmanship. Furthermore, polarized light technology does not apply to wallpaper production, and durability is not inherently less in block printing as compared to digital processes; rather, each has its qualities depending on the specific materials and techniques used.