公开(公告)号：US5832831A

公开(公告)日：1998-11-10

申请号：US704936

申请日：1996-08-30

Applicant: James T. Boyle ,  Colin A. Morneau

Inventor： James T. Boyle ,  Colin A. Morneau

IPC: B41F27/02 ,  B41N1/20 ,  B41N1/22

CPC classification number: B82Y15/00 ,  B41F27/02 ,  B41N6/00

Abstract: A ferromagnetic foil carrying a layer of a pressure sensitive adhesive for adhesive attachment to a printing plate to be used in a letterpress or flexographic printing operation. The ferromagnetic foil preferably is formed of a cold rolled steel having a thickness in the range of from about 0.001 inch to about 0.007 inch. The metal foil allows the printing plate to be adhered to the outer surface of a magnetized printing cylinder due to the magnetic attraction between the printing cylinder and the ferromagnetic foil. If the printing cylinder is not magnetized, but is formed of a ferromagnetic material, a flexible magnetic pad is applied to the outer surface of the cylinder, and the ferromagnetic foil-backed printing plate is then placed on the flexible magnetic pad. If the printing cylinder is formed of a non-ferromagnetic material, a flexible magnetic pad is first adhered to the outer surface of the cylinder, such as by an adhesive, and the foil-backed printing plate is then adhered to the flexible magnetic pad.

Abstract translation: 带有粘合剂粘合剂层的铁磁箔，用于印刷版，用于凸版印刷或柔版印刷操作。 铁磁箔优选由厚度在约0.001英寸至约0.007英寸范围内的冷轧钢板形成。 由于印刷滚筒和铁磁箔之间的磁吸引力，金属箔允许印版粘附到磁化印刷滚筒的外表面。 如果印刷滚筒未被磁化，而是由铁磁材料形成，则将柔性磁性垫施加到圆筒的外表面，然后将铁磁箔背衬印刷板放置在柔性磁性垫上。 如果印刷滚筒由非铁磁材料形成，则首先将柔性磁性垫片例如通过粘合剂附着到滚筒的外表面，然后将箔背印刷板粘附到柔性磁性垫片上。