Complex sentence: In contrast to a floppy disk this Nakamatsu patent discloses the use of printed paper for storage instead of the magnetic material of a floppy disk, is not rewritable and lacks most elements of the IBM floppy disk patent.
Split into simpler sentences: In contrast to a floppy disk, this Nakamatsu patent discloses the use of printed paper for storage instead of the magnetic material of a floppy disk. It is not rewritable and lacks most elements of the IBM floppy disk patent.