Head assembly capable of reading floppy discs of varying densities and floppy-disc drive incorporating the same

A supporting arm assembly for a disc drive comprising:

• a head unit having a magnetic head element for recording and/or reproducing information signals for a disc-shaped recording medium, wherein said head unit has a first magnetic head element for recording and/or reproducing information signals in a slide contact state with respect to the disc-shaped recording medium and a second magnetic head element for recording and/or reproducing the information signals in a floated state with respect to the disc-shaped recording medium;
• a supporting arm having a first portion for supporting said head unit, a second portion mounted on a supporting arm holding portion and a third portion interconnecting said first and second portions;
• a flat surface on each of the first and third portions, and wherein bent pieces bent from the flat surface are formed on both width-wise sides of said first portion and the third portion;
• and wherein the bent height of bent pieces of said first portion is smaller than the bent height of the bent pieces of said third portions forming a step portion, and said head unit is mounted astride said first and third portions on said supporting arm.