Storage

1 . A carriage arm that supports a head gimbal assembly that includes a head that records information in and/or reproduces the information from a recording medium, said carriage arm having a perforation hole near a center part, and said carriage arm comprising resin filled in the perforation hole.

2 . A storage comprising:

a head gimbal assembly that includes a head that records information in and/or reproduces the information from a recording medium; and

a carriage that rotates around a shaft, and includes an arm that supports said head gimbal assembly, the arm having a perforation hole near a center part, and the perforation hole being filled with resin.

3 . A storage according to claim 2 , further comprising a voice coil motor that rotates said carriage, said voice coil motor including:

a coil block that is molded with the resin and opposes to the arm with respect to the shaft of the carriage; and

a voice coil mounted on the coil block.

4 . A method for manufacturing a carriage for a storage, the carriage having an arm that supports a head gimbal assembly that includes a head that records information and/or reproduces the information from a recording medium, said method comprising the steps of:

forming a perforation hole near a center part in the arm; and

molding a coil block mounted with a voice coil of a voice coil motor that rotates the arm around a shaft and sealing the perforation hole with the same resin.

5 . A method according to claim 4 , wherein said molding and sealing step simultaneously performs molding of the coil block and sealing of the perforation hole.

6 . A method according to claim 5 , wherein the carriage includes plural arms, each of which has the perforation hole, and said molding and sealing step seals the resin in plural perforation holes and between the plural perforation holes, and

wherein said method further comprises the step of removing the resin between the plural perforation holes.