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

An optically readable code support to be associated with or be part of a capsule intended for delivering a beverage in a beverage producing device, the optically readable code support comprising at least one sequence of symbols represented on the optically readable code support so that each symbol of the at least one sequence of symbols is sequentially readable by a reading arrangement of an external reading device while the capsule is driven in rotation along an axis of rotation, wherein the at least one sequence of symbols are essentially formed of light reflective surfaces and light absorbing surfaces comprising a base structure extending continuously at least along the at least one sequence of symbols and discontinuous discrete light-absorbing portions locally applied onto or formed at a surface of the base structure, the discontinuous discrete light-absorbing portions form the light-absorbing surfaces and the base structure forms the light-reflective surfaces outside surface areas occupied by the discontinuous discrete light-absorbing portions, the discontinuous discrete light-absorbing portions are arranged to provide a lower light-reflectivity than a light-reflectivity of the base structure outside the surface areas occupied by the discontinuous discrete light-absorbing portions, the base structure comprises a monolithic metal support layer coated by a transparent polymeric primer to form the light reflective surfaces or an inner polymeric layer coated by an outer metallic layer.