申请人:FUJI PHOTO FILM CO., LTD.
公开号:US20030108773A1
公开(公告)日:2003-06-12
A magnetic recording medium is disclosed, comprising a support having thereon a lower layer containing a nonmagnetic powder or a ferromagnetic powder dispersed in a binder, and at least a magnetic layer containing a ferromagnetic powder dispersed in a binder provided on the lower layer, wherein the binder contains a polyurethane resin obtained from a polyester polyol comprising a specific diol, a chain extending agent and an organic diisocyanate, and the magnetic layer surface has a C/Fe peak ratio of from 7 to 11.
本发明公开了一种磁记录介质,它包括一个支撑体,支撑体上有一个下层,下层含有分散在粘结剂中的非磁性粉末或铁磁性粉末,下层上至少有一个磁性层,磁性层含有分散在粘结剂中的铁磁性粉末,其中粘结剂含有聚氨酯树脂,聚氨酯树脂由聚酯多元醇制成,聚酯多元醇包括特定的二元醇、扩链剂和有机二异氰酸酯,磁性层表面的 C/Fe 峰比为 7 到 11。