Abstract: A motor which is capable of realizing further space saving and cost reduction. A cylindrical outer rotor 11 is rotatable around a central axis CL thereof. A plurality of magnets 13 are arranged at equal intervals on an inner circumferential surface of the outer rotor 11. Three Hall elements 15 to 17 are arranged to oppose the respective magnets 13 and detect switching of magnetic poles caused by movement of the respective magnets 13 passing through each vicinity of the Hall elements 15 to 17 when the outer rotor 11 rotates. The Hall element 17 is comprised of a linear Hall element that outputs a linear signal representing a linear change of a magnetic flux density caused by movement of the respective magnets 13. One of the respective magnets 13 is arranged offset along the central axis CL as compared to the other magnets 13.

Abstract: In a rotary electric device for a power working machine capable of being braked by a brake mechanism, a cover having a bottomed cylindrical shape and covering a yoke of the device, includes: a cover cylindrical portion concentrically surrounding an outer peripheral surface of a cylindrical portion of the yoke with an annular clearance therebetween, and having an outer peripheral surface with which a brake shoe is capable of being placed in pressure contact; and a cover bottom wall portion continuous to one end of the cover cylindrical portion, and connected to a bottom wall portion of the yoke. A ventilation clearance communicating with the annular clearance is formed between the bottom wall portion and the cover bottom wall portion. Vent holes communicating the ventilation clearance with an outside of the yoke are provided through the bottom wall portion and the cover bottom wall portion.

Abstract: A motor which is capable of realizing further space saving and cost reduction. A cylindrical outer rotor 11 is rotatable around a central axis CL thereof. A plurality of magnets 13 are arranged at equal intervals on an inner circumferential surface of the outer rotor 11. Three Hall elements 15 to 17 are arranged to oppose the respective magnets 13 and detect switching of magnetic poles caused by movement of the respective magnets 13 passing through each vicinity of the Hall elements 15 to 17 when the outer rotor 11 rotates. The Hall element 17 is comprised of a linear Hall element that outputs a linear signal representing a linear change of a magnetic flux density caused by movement of the respective magnets 13. One of the respective magnets 13 is arranged offset along the central axis CL as compared to the other magnets 13.

Abstract: In a rotary electric device for a power working machine capable of being braked by a brake mechanism, a cover having a bottomed cylindrical shape and covering a yoke of the device, includes: a cover cylindrical portion concentrically surrounding an outer peripheral surface of a cylindrical portion of the yoke with an annular clearance therebetween, and having an outer peripheral surface with which a brake shoe is capable of being placed in pressure contact; and a cover bottom wall portion continuous to one end of the cover cylindrical portion, and connected to a bottom wall portion of the yoke. A ventilation clearance communicating with the annular clearance is formed between the bottom wall portion and the cover bottom wall portion. Vent holes communicating the ventilation clearance with an outside of the yoke are provided through the bottom wall portion and the cover bottom wall portion.

Abstract: An electrophotographic photosensitive member is provided in which both a potential variation over a long time period and a potential variation within a short time period are suppressed. A method of producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are also provided. In the electrophotographic photosensitive member, an intermediate layer is a layer formed by coating and drying a coating liquid for an intermediate layer, containing an acidic titania sol and an organic resin, and the acidic titania sol is an acidic sol containing anatase-type titanium oxide crystal particles having an average primary particle diameter of 3 nm or more and 9 nm or less.

Abstract: An electrophotographic photosensitive member is provided in which both a potential variation over a long time period and a potential variation within a short time period are suppressed. A method of producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are also provided. In the electrophotographic photosensitive member, an intermediate layer is a layer formed by coating and drying a coating liquid for an intermediate layer, containing an acidic titania sol and an organic resin, and the acidic titania sol is an acidic sol containing anatase-type titanium oxide crystal particles having an average primary particle diameter of 3 nm or more and 9 nm or less.