Gravure roller

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a gravure roller which comprises a roller body, a carving area and a non-carving area, the carving area and the non-carving area are arranged on the surface of the roller body, at least one corner mark is arranged at the junction of the carving area and the non-carving area, and the corner mark is used for forming a mark on the surface of a current collector. According to the utility model, the corner mark is arranged at the junction of the carving area and the non-carving area, when the surface of the current collector is coated with the bottom coating by adopting a gravure roller, marks are formed at the head end and the tail end of the bottom coating, and when the surface of the bottom coating is coated with active substances to form the active substance layer, marks are formed at the head end and the tail end of the bottom coating. Whether the coating film length of the active material lay