Gravure roller and coating method for improving head-tail dislocation of active material layer

The invention belongs to the technical field of battery production and manufacturing, and particularly relates to an intaglio roller and a coating method for improving head-tail dislocation of an active substance layer, the intaglio roller 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, and at least one corner mark is arranged at the junction of the carving area and the non-carving area; the corner marks are used for forming marks on the surface of the current collector. The corner mark is arranged at the junction of the carving area and the non-carving area, marks are formed at the head end and the tail end of the bottom coating layer when the surface of the current collector is coated with the bottom coating layer through a gravure roller, and after the surface of the bottom coating layer is coated with the active substance and the active substance layer is formed, marks are formed at the head end and t