Abstract: A stator structure which enables coils to be fitted over teeth while the circularity of the stator core and the parallelism between the end surfaces of the stator core are maintained. A stator structure is provided with: a stator core which is formed by stacking steel plates and which comprises a yoke and teeth; and coils which are fitted over the teeth so as to surround the teeth. A cut is formed only in one part of the yoke, and the cut is opened. Opening the cut allows the coils to be fitted over the teeth while the circularity of the stator core and the parallelism between the end surfaces of the stator core are maintained.

Abstract: A stator structure which enables coils to be fitted over teeth while the circularity of the stator core and the parallelism between the end surfaces of the stator core are maintained. A stator structure is provided with: a stator core which is formed by stacking steel plates and which comprises a yoke and teeth; and coils which are fitted over the teeth so as to surround the teeth. A cut is formed only in one part of the yoke, and the cut is opened. Opening the cut allows the coils to be fitted over the teeth while the circularity of the stator core and the parallelism between the end surfaces of the stator core are maintained.

Abstract: A disk apparatus and a method of data read/write are provided in which even when off-track error occurs at the end sector, the occurrence of the off-track error is detected reliably. Data is read from and/or written into a track on a disk on each sector. An end sector identification number is acquired that identifies the end sector related to the read and/or write of the data. Then, when data of the end sector corresponding to the acquired end sector identification number is read and/or written, the identification number of the next sector of the end sector is read. Then, it is determined whether the read-out identification number of the next sector is consecutive to said end sector identification number. When determined as consecutive, the data read from the end sector is outputting, or alternatively the data to be written into the end sector is received from the outside.

Abstract: A disk recorder for data reading and writing operations to a disk includes an access-mode switcher and an accessor. The access-mode switcher selects between a random access mode and a sequential access mode in respect to a mode for data writing and reading to and from the disk. The accessor accepts a random access command from a host and performing a random access operation accordingly in the random access mode while accepting a sequential access command from the host and performing a sequential access operation accordingly in the sequential access mode.