The present disclosure provides a flexographic printing plate containing at least: a support; and a relief layer sequentially stacked, wherein in dynamic elasticity mapping measurement by AFM on a cross section obtained by cutting 1 m from a surface layer of a face on the side opposite to a face where the relief layer is in contact with the support, the cross section has at least: a region (A1) having a storage modulus of 100 MPa or more and 500 MPa or less at a frequency of 2,000 Hz; and a region (B1) having a storage modulus of 3 MPa or more and 15 MPa or less at a frequency of 2,000 Hz.

Provided are a washout processor and a method for manufacturing a flexographic printing plate precursor, which have good productivity and work efficiency. A washout processor that develops a flexographic printing plate precursor after imagewise exposure using a developer includes a station for attaching the flexographic printing plate precursor, and a measurement unit that measures at least one of a size or a thickness of the flexographic printing plate precursor and a position of the flexographic printing plate precursor on the station.

Provided are a washout processor and a method for manufacturing a flexographic printing plate precursor, which have good productivity and work efficiency. A washout processor that develops a flexographic printing plate precursor after imagewise exposure using a developer includes a station for attaching the flexographic printing plate precursor, and a measurement unit that measures at least one of a size or a thickness of the flexographic printing plate precursor and a position of the flexographic printing plate precursor on the station.

A transferring method for an in-mold roller process is provided. The transferring method includes the following steps. A plastic film is provided. A transfer ink and a printing roller are provided. A 3D pattern is formed on a surface of the printing roller. An ink pattern is formed on the plastic film by using the printing roller and the transfer ink, so as to form a transfer film. The transfer film is placed and positioned in a mold. The mold is filled with a structural material to form a structural member and cause the ink pattern to be transferred from the plastic film to a surface of the structural member. Finally, a solidification treatment is performed on the ink pattern.

A transferring method for an in-mold roller process is provided. The transferring method includes the following steps. A plastic film is provided. A transfer ink and a printing roller are provided. A 3D pattern is formed on a surface of the printing roller. An ink pattern is formed on the plastic film by using the printing roller and the transfer ink, so as to form a transfer film. The transfer film is placed and positioned in a mold. The mold is filled with a structural material to form a structural member and cause the ink pattern to be transferred from the plastic film to a surface of the structural member. Finally, a solidification treatment is performed on the ink pattern.