Abstract: The present disclosure is generally related to a tape drive comprising a tape head and a controller coupled to the tape head. The tape head comprises one or more modules, each module comprising a plurality of write heads aligned in a first row, a plurality of read heads aligned in a second row parallel to the first row, and at least four first servo heads aligned in the second row. Two or more first servo heads of the at least four first servo heads are configured to concurrently read first servo data from a first servo track. The controller is configured to concurrently process the first servo data, to compute the position of the tape head based on a known spacing between the at least two servo heads, and to dynamically adjust a position of the tape head based on the processed first servo data.

Abstract: In order to provide a polygon mirror which can reduce a light amount difference among respective image heights on a scanned surface with suppressing an increase in size in a light scanning apparatus, the polygon mirror according to the present invention includes a plurality of rectangular reflecting surfaces in which the following condition is satisfied: 0.02<|1?B/A|<0.10 where A represents a reflectivity at a center of the reflecting surface with respect to a light flux which is incident at a predetermined incident angle, and B represents the reflectivity at a predetermined point between the center and an end in the longitudinal direction of the reflecting surface with respect to the light flux which is incident at the predetermined incident angle.

Abstract: The fixing device having a long durability life includes a first member, a heater, and a second member, the heater including a base material, an intermediate layer on the base material, and a surface layer on the intermediate layer, which includes a diamond-like carbon film, the base material containing at least one compound selected from the group consisting of aluminum nitride, aluminum oxide, and silicon nitride, and the intermediate layer has a ratio of [(Si)+(C)]/A of 0.8 or more, and a ratio of (Si)/(C) of more than 1.

Abstract: The fixing device having a long durability life includes a first member, a heater, and a second member, the heater including a base material, an intermediate layer on the base material, and a surface layer on the intermediate layer, which includes a diamond-like carbon film, the base material containing at least one compound selected from the group consisting of aluminum nitride, aluminum oxide, and silicon nitride, and the intermediate layer has a ratio of [(Si)+(C)]/A of 0.8 or more, and a ratio of (Si)/(C) of more than 1.