Hard disk drive apparatus having a flexible printed circuit with a plurality of traces in a specified order

A hard disk drive apparatus comprising:

• a magnetic head including a write head to record data on a disk and a read head to read the data recorded on the disk;
• at least one actuator arm on which the magnetic head is mounted;
• a voice coil motor rotating the at least one actuator arm across the disk;
• a printed circuit board electrically connected to the write head, the read head, and the voice coil motor;
• and
• a flexible printed circuit having at least one write trace to electrically connect the write head and the printed circuit board, at least one read trace to electrically connect the read head and the printed circuit board, and a ground trace to ground the flexible printed circuit,
• wherein the at least one write trace is arranged between the read trace and the ground trace with one of the at least one write trace being directly adjacent to the ground trace.

A hard disk drive apparatus comprising:

• a magnetic head including a write head to record data on a disk and a read head to read the data recorded on the disk;
• at least one actuator arm on which the magnetic head is mounted;
• a voice coil motor rotating the at least one actuator arm across the disk;
• a printed circuit board electrically connected to the write head, the read head, and the voice coil motor;
• and
• a flexible printed circuit having at least one write trace to electrically connect the write head and the printed circuit board, at least one read trace to electrically connect the read head and the printed circuit board, a ground trace to ground the flexible printed circuit, and a voice coil motor trace to electrically connect the voice coil motor and the printed circuit board,
• wherein the at least one write trace is arranged between the read trace and one of the voice coil motor trace and the ground trace with no trace between one of the at least one write trace and the one of the voice coil motor trace and the ground trace.

A hard disk drive apparatus comprising:

• a magnetic head including a write head to record data on a disk and a read head to read the data recorded on the disk;
• at least one actuator arm on which the magnetic head is mounted;
• a voice coil motor rotating the at least one actuator arm across the disk;
• a printed circuit board electrically connected to the write head, the read head, and the voice coil motor;
• and
• a flexible printed circuit having at least one write trace to electrically connect the write head and the printed circuit board, at least one read trace to electrically connect the read head and the printed circuit board, and at least one of a ground trace to ground the flexible printed circuit and a voice coil motor trace to electrically connect the voice coil motor and the printed circuit board and disposed such that the at least one write trace is arranged between the read trace and the one of the voice coil motor trace and the ground trace and directly adjacent to the one of the voice coil motor trace and the ground trace.

A flexible printed circuit included in a hard disk drive apparatus, the flexible printed circuit comprising:

• one or more first heads, each of the one or more first heads including a first read trace and a first write trace;
• a ground trace located directly adjacent to the first write trace of one of the one or more first heads;
• and
• a voice coil motor trace located adjacent to the ground trace,
• wherein the ground trace is located between the first read trace of the one or more first heads and the voice coil motor trace.