The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2007
Filed:
Nov. 18, 2003
Masatoshi Takahashi, Kanagawa, JP;
Mikio Tomaru, Kanagawa, JP;
Hiroshi Hashimoto, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A process for producing a magnetic recording medium having at least one magnetic layer formed above a support is provided. The process includes a step of providing, on at least one side of the support, a smoothing coating layer having a thickness of 0.10 to 1 μm, a surface roughness of at most 5 nm, a number of projections having a height of 20 nm or higher measured by atomic force microscopy (AFM) of at most 20 projections/900 μm, and an amount of residual solvent of less than 10 mg/m, and a step of forming at least one magnetic layer on or above the smoothing coating layer without winding up.