Optical readable code support and capsule for preparing a beverage having such code support providing an enhanced readable optical signal

摘要

Disclosed is an optically readable code support (30) to be associated with or be part of a capsule indented for delivering a beverage in a beverage producing device by centrifugation of the capsule. The support comprising at least one sequence of binary symbols represented on the support so that each symbol is sequentially readable by a reading arrangement of an external reading device while the capsule is driven in rotation along an axis of rotation. The binary symbols are essentially formed of light reflective surfaces (400-403) and light absorbing surfaces (410-414). The code support preferably comprises a base structure (500) extending continuously at least along the sequence of symbols and discontinuous discrete light-absorbing portions (528) locally applied onto or formed at the surface of the base structure. The discontinuous discrete light-absorbing portions form the light- absorbing surfaces and the base structure (500) forms the light-reflective surfaces (400-403) outside the surface areas occupied by the discrete light-absorbing portions. The discrete light-absorbing portions (410-414) are arranged to provide a lower light-reflectivity than the one of the base structure outside the surface areas occupied by the discrete light-absorbing portions. The light-reflective base structure (500) comprises a monolithic metal support layer or polymeric support layer. The layer is coated by a lacquer comprising light-reflective particles.