Abstract: A stationary tape guide of the type comprising a guide block having, on its front face, a laterally extending guide path across a plurality of tape-face guides integrally formed on said block, at least a tape-edge guide having a guide surface extending from the guide block above the guide path for restricting lateral movement of the tape and means for securing said guide block in close proximity to a helical scanning cylinder of a magnetic tape recorder, wherein said tape-edge guide being formed as a detachable part from the guide block and slidably mounted on said guide block, bias means disposed between said tape-edge guide and said guide block for urging them away from each other, and means for adjusting the distance between said tape-edge guide and said guide block.

Abstract: A cylindrical permanent magnet suitable for use as the rotor magnet of a stepping motor. The magnet is a sintered cylindrical permanent magnet having a composition expressed by MO.nFe.sub.2 O.sub.3, where M represents Ba, Sr, Pb or mixture thereof, while n represents a value of 5 to 6. The sintered cylindrical permanent magnet is provided on its surface with multipolar anisotropy of more than 8 (eight) magnetic poles. Disclosed also is a method of producing the cylindrical permanent magnet.

Abstract: A coffee mill comprises a coffee bean pulverizing cutter held in a mill casing, a space for catching skin slivers and fine fragments of coffee beans and a cutter receiving space communicated with the catching space. Air flow is produced between these spaces during pulverizing the coffee beans to move the skin slivers to the catching space.