The invention relates to block copolymers produced by means of controlled polymerization and that have at least one block A or B comprising acrylate monomers and copolymerizable monomers, and a block P on the basis of functionalized polymers. The ink stick body includes a first interlocking face at the first end and a second interlocking face at the second end. Each TFT formation region is isolated, a metallic element for promoting crystallization is added, and heat treatment is performed, thus making it possible to arbitrarily determine the locations of crystal aggregates. The control unit selectively generates a high level activation signal or a low level activation signal based on the input data, and generates a switching signal based on the input data. After the beverage in a matched carafe is prepared, the matched timer is activated.