Electronic substrate and magnetic disk apparatus

A magnetic disk apparatus comprising:

• a magnetic disk;
• a magnetic head configured to read information recorded on the magnetic disk;
• a flexible printed circuit comprising a head connecting portion having a first terminal for electrically connecting to the magnetic head, a board connecting portion having a second terminal for electrically connecting to a main printed board, and a connector connecting portion for electrically connecting a connector;
• a first reinforcing member provided on the head connecting portion, the first reinforcing member reinforcing the head connecting portion;
• a second reinforcing member provided on the board connecting portion, the second reinforcing member reinforcing the board connecting portion;
• and
• a third reinforcing member provided on the connector connecting portion, the third reinforcing member reinforcing the connector connecting portion,
• wherein the flexible printed circuit is partly bent to make the board connecting portion and the connector connecting portion overlap each other, and
• wherein the second reinforcing member comprises a screw portion for fixing the flexible printed circuit with a screw, and an additional enhancement portion formed around the screw portion with a louvered shape.