| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic tape of a linear magnetic recording system having high track density by suppressing lateral tape motion. SOLUTION: A body to be treated (magnetic tape) 41 is made to run at e.g. 400 m/min speed in a direction A via guide rolls 47 and 47 between a feeding roll 45 and a winding roll 46 (a body to be treated running system 42). A polishing tape (lapping tape) 43 using an abrasive having 9μm particle diameter is transferred at e.g. 14.4 cm/min speed in a direction B (the same as the direction A) via a pushing roll 48 between a feeding roll 49 and a winding roll 50 (a polishing tape running system 44). The pushing roll 48 is pushed to a back coat layer side surface of the body to be treated 41 by a guide block from an upper part and the polishing tape 43 is brought into contact with back coat layer surface of the magnetic tape to perform polishing (lapping) treatment. Thereby, texture is formed on the back coat layer. COPYRIGHT: (C)2006,JPO&NCIPI
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