Magnetic recording media having a specific width relationship between the magnetic coat and primer coat and producing method thereof

摘要

A magnetic recording medium which enables not only getting rid of trouble due to scrapes occurring in a selvage portion of a web, but also preventing blocking trouble from occurring in heat treatment during post processing and a method of producing the same. A release coat is formed on a back surface of the web at least at portions in contact with overcoatedly primed portions so that the overcoatedly primed portions will not stick to the back surface of the web, whereby the overcoatedly primed portions can prevent scrapes from occurring in selvage portions of the web during the coating of the web with a magnetic fluid, in addition, the overcoatedly primed portions will not stick to the back surface of the web, due to the release coat, during the heat treatment of the magnetic recording medium produced into a roll, whereby blocking trouble can also be prevented from occurring.