Sony Corp and a unit of photography giant Fuji Photo Film Co have jointly developed a 3.5 inch floppy disk system with 200Mb storage capacity which they will pitch directly at the markets of Iomega Corp and SyQuest Technology Inc. The companies claim the HiFD floppy disk storage system has a transfer rate of 3.6 megabytes per second, and it is targeted at the same consumers that might buy Iomega’s Zip drive. Both SyQuest and Iomega’s stock fell slightly following the announcement. The HiFD is said to have read and write compatibility with existing 3.5 inch floppy disks, and should be available next spring, the companies say.