Magnetic disk apparatus
A magnetic disk apparatus comprises an electrically conductive enclosure which accommodates at least a magnetic storage medium and a head for writing/reading information on the magnetic storage medium, an electrically conductive damping plate which is attached via an insulating member to one face of the electrically conductive enclosure in order to suppress vibration of the electrical conductive enclosure, and at least one electrical connecting member which electrically connects the damping plate to the electrically conductive enclosure.
1 . A magnetic disk apparatus comprising:
an electrically conductive enclosure which accommodates at least a magnetic storage medium and a head for writing/reading information on said magnetic storage medium;
an electrically conductive damping plate which is attached, via an insulating member, to one face of said electrically conductive enclosure in order to suppress vibration of said electrically conductive enclosure; and
at least one electrical connecting member which electrically connects said damping plate to said electrically conductive enclosure.
2 . A magnetic disk apparatus as claimed in claim 1 , wherein said insulating member is an insulating double-sided adhesive tape, and
said electrical connecting member is a protrusion protruding from said damping plate or said electrically conductive enclosure.
3 . A magnetic disk apparatus as claimed in claim 2 , wherein said insulating double-sided adhesive tape has at least one through-hole, and
said protrusion passes through said through-hole.
4 . A magnetic disk apparatus as claimed in claim 1 , wherein said damping plate has a through-hole communicating with said through-hole, and
said protrusion is formed protruding from said one face of said electrically conductive enclosure, and contacts an interior side face of said through-hole formed in said damping plate.
5 . A magnetic disk apparatus as claimed in claim 1 , wherein said electrically conductive enclosure has a through-hole communicating with said through-hole, and
said protrusion is formed protruding from said damping plate, and contacts an interior side face of said through-hole formed in said electrically conductive enclosure.
6 . A magnetic disk apparatus as claimed in claim 1 , wherein said electrical connecting member is at least one electrically conductive tape which is attached so as to electrically connect a surface of said electrically conductive enclosure and a surface of said damping plate.
7 . A magnetic disk apparatus as claimed in claim 6 , wherein said electrically conductive tape is a metal tape.
8 . A magnetic disk apparatus as claimed in claim 6 , wherein said electrical connecting member is attached over a predetermined length along an outer edge of said damping plate.
9 . A magnetic disk apparatus comprising:
an electrically conductive enclosure which accommodates at least a magnetic storage medium and a head for writing/reading information on said magnetic storage medium;
an electrically conductive member; and
an electrically conductive damping plate which is attached via said electrically conductive member to one face of said electrically conductive enclosure in order to suppress vibration of said electrically conductive enclosure.
10 . A magnetic disk apparatus as claimed in claim 9 , wherein said electrically conductive member is formed from an electrically conductive double-sided adhesive tape having a resistance value of 105 Q or less.
11 . A magnetic disk apparatus comprising:
an electrically conductive enclosure which accommodates at least a magnetic storage medium and a head for writing/reading information on said magnetic storage medium; and
an electrically conductive damping plate which is attached to one face of said electrically conductive enclosure in order to suppress vibration of said electrically conductive enclosure, wherein
at least an externally exposed surface of said damping plate is covered with a high-resistance material.
12 . A magnetic disk apparatus as claimed in claim 11 , wherein said high-resistance material has a resistance value larger than 10 5 Ω but not larger than 10 12 Ω.
13 . An electrically conductive damping plate which is attached to an electrically conductive enclosure, wherein
an electrical connecting member for electrical connecting to said electrically conductive enclosure is provided protruding from one face of said damping plate.
14 . An electrically conductive enclosure which accommodates at least a magnetic storage medium and a head for writing/reading information on said magnetic storage medium, and to which an electrically conductive damping plate is attached, wherein
an electrical connecting member for electrical connecting to said damping plate is provided protruding from a face to which said damping plate is attached.