Method of manufacturing magnetic recording medium

A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are recorded by a magnetic transfer method, comprising the steps of:

• cutting an original sheet into discrete webs each having a predetermined width (slitting step);
• punching the web to obtain a disc-shaped slave medium (punching step);
• removing distortion of the web (thermo step);
• smoothing a surface of the slave medium (burnishing step);
• performing a magnetic transfer in a state where the slave medium and a master medium bearing servo information are allowed to be brought into close contact with each other (magnetic transfer step);
• fixedly attaching a center core to the slave medium (center core attachment step);
• incorporating the slave medium into the case (assembly step);
• removing dust on the slave medium incorporated into the case (cleaning step);
• checking the servo signals magnetically transferred to the slave medium (verifying step);
• and
• packing the magnetic recording medium as a product (packing step).

A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are recorded by a magnetic transfer method, comprising the steps of:

• cutting an original sheet into discrete webs each having a predetermined width (slitting step);
• punching the web to obtain a disc-shaped slave medium (punching step);
• removing distortion of the web (thermo step);
• fixedly attaching a center core to the slave medium (center core attachment step);
• performing a magnetic transfer in a state where the slave medium and a master medium bearing servo information are allowed to be brought into close contact with each other (magnetic transfer step);
• smoothing a surface of the slave medium (burnishing step);
• incorporating the slave medium into the case (assembly step);
• removing dust on the slave medium incorporated into the case (cleaning step);
• checking the servo signals magnetically transferred to the slave medium (verifying step);
• and
• packing the magnetic recording medium as a product (packing step).

A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are recorded by a magnetic transfer method, comprising the steps of:

• cutting an original sheet into discrete webs each having a predetermined width (slitting step);
• punching the web to obtain a disc-shaped slave medium (punching step);
• removing distortion of the web (thermo step);
• performing a magnetic transfer in a state where the slave medium and a master medium bearing servo information are allowed to be brought into close contact with each other (magnetic transfer step);
• smoothing a surface of the slave medium (burnishing step);
• fixedly attaching a center core to the slave medium (center core attachment step);
• incorporating the slave medium into the case (assembly step);
• removing dust on the slave medium incorporated into the case (cleaning step);
• checking the servo signals magnetically transferred to the slave medium (verifying step);
• and
• packing the magnetic recording medium as a product (packing step).

A method of manufacturing a magnetic recording medium having a disc-shaped flexible slave medium accommodated in a case, onto which servo signals are recorded by a magnetic transfer method, comprising the steps of:

• cutting an original sheet into discrete webs each having a predetermined width (slitting step);
• removing distortion of the web (thermo step);
• performing a magnetic transfer in a state where the web and a master medium bearing servo information are allowed to be brought into close contact with each other (magnetic transfer step);
• punching the web to obtain a disc-shaped slave medium (punching step);
• smoothing a surface of the slave medium (burnishing step);
• fixedly attaching a center core to the slave medium (center core attachment step);
• incorporating the slave medium into the case (assembly step);
• removing dust on the slave medium incorporated into the case (cleaning step);
• checking the servo signals magnetically transferred to the slave medium (verifying step);
• and
• packing the magnetic recording medium as a product (packing step).