K2 uses adhesive roll to bound photography paper together to create a book block in just a few minutes. Key benefits: Fully automatic: auto collect photography paper, make a crease, fold, apply a binding carton and adhesive. Two options: bound photograhpy paper back to back or apply a binding carton between photography paper to make a book block stronger. Clean operation : use adhensive roll, no hearting or wet glue Reliable high quality products Technical specifications: Dimension: 120cm(L)x60cm(W)x130cm(H) Power supply: 220V, 50HZ, 200W Maximum book size: 12x18 ( 30x46cm) Adhesive: adhesive roll