This American National Standard for an unrecorded cartridge containing 0.250-inch (6.30-mm)-wide magnetic tape presents the minimum requirements for the mechanical and magnetic interchangeability of the cartridge between information processing systems, using physical recording densities in the range of 6400 to 10 000 flux transitions per inch (ftpi) (252 to 394 flux transitions per millimeter (ftpmm)).

The magnetic tape cartridge consists of two co-planar hubs loaded with 0.250-inch (6.30-mm)-wide magnetic tape (Figure 1). The tape is transported between hubs by an internal belt that is coupled by an internal belt capstan to the external drive. No tape-driving or position-sensing elements penetrate the cartridge.

This standard applies to cartridges used for data interchange. Where it applies to cartridge testing only, it is specifically stated.

CAUTION NOTICE: The user's attention is called to the possibility that compliance with this standard may require use of an invention covered by patent rights.

By publication of this standard, no position is taken with respect to the validity of this claim or of any patent rights in connection therewith. The patent holder has, however, filed a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions, to applicants desiring to obtain such a license. Details may be obtained from the publisher.

No representation or warranty is made or implied that this is the only license that may be required to avoid infringement in the use of this standard.