Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting t

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting t

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: An imaging device includes a light source, a plurality of lenses disposed adjacent to one another on a predetermined plane, a diffuser plate that diffuses light to be emitted from the light source, and an imaging element that includes a plurality of pixels, the imaging element being configured to receive reflection light generated by causing the light diffused by the diffuser plate to be reflected from a subject. The plurality of lenses are disposed so that a period of interference fringes in the diffused light is less than or equal to three pixels of the imaging element. This configuration can provide the imaging device in which an influence of the interference fringes of the diffused light can be suppressed in an image that is obtained when an image of the subject is captured by irradiating the subject with the light diffused by the diffuser plate having the plurality of lenses.

Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting t

Abstract: An image forming apparatus forming an image on a recording material includes a main assembly and a supporting member for supporting a plurality of cartridges. The supporting member is movable to an outside position, a first inside position where the cartridges are positioned inside of the main assembly, and a second inside position where the supporting member is movable to the outside position and the first inside position. A first positioning portion positions an associated cartridge when the supporting member is located at the first inside position, and a first preventing portion prevents rotation of the associated cartridge about the first positioning portion. In addition, a second positioning portion positions the associated cartridge when the supporting member is located at the second inside position, and the second positioning portion is spaced from the associated cartridge when the supporting member is located at the first inside position.

Abstract: An imaging device includes a light source, a plurality of lenses disposed adjacent to one another on a predetermined plane, diffuser plate that diffuses light to be emitted from the light source, and an imaging element that includes a plurality of pixels, the imaging element being configured to receive reflection light generated by causing the light diffused by the diffuser plate to be reflected from a subject. The plurality of lenses are disposed so that a period of interference fringes in the diffused light is less than or equal to three pixels of the imaging element. This configuration can provide the imaging device in which an influence of the interference fringes of the diffused light can be suppressed in an image that is obtained when an image of the subject is captured by irradiating the subject with the light diffused by the diffuser plate having the plurality of lenses.

Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a gradient coil configured to generate a gradient magnetic field in an image taking space. The gradient coil includes: a first coil member formed by using a first metal that is non-magnetic; and a second coil member connected to the first coil member and formed by using a second metal that is different from the first metal and is non-magnetic.

Abstract: Provided is a battery production method including a first step of pressurizing a predetermined region of a plurality of mutually overlapping collector foils (14) exposed from an end of an electrode (12), thereby forming a compressed region (16) where spaces between adjacent collector foils (14) are reduced, and a second step of joining the plurality of collector foils (14) together in an inner region of the compressed region (16) by ultrasonic welding, thereby forming a joining region (18) where the plurality of collector foils (14) are integrated, and also provided is a battery production device, whereby the occurrence of a defect can be reduced.

Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting t

Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting t

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: A gradient magnetic-field coil according to an embodiment includes multiple units of coil members and a connecting member. In each of the coil members, a coil pattern is formed with a first nonmagnetic metal. The connecting member connects the coil members with each other. Moreover, at least a part of the connecting member is formed with a second nonmagnetic metal that is different from the first nonmagnetic metal.

Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.

Abstract: An image forming apparatus includes: a supporting member (tray) for supporting cartridges, wherein the tray is movable to an outside position, a first inside position, and a second inside position; a first positioning portion, provided in a main assembly, for positioning an associated cartridge of the cartridges when the tray is located at the first inside position, and a first preventing portion, provided in the main assembly, for preventing rotation of the associated cartridge about the first positioning portion; and a second positioning portion, provided to the tray, for positioning the associated cartridge when the tray is located between the outside position and the second inside position. The second positioning portion is in a state in which the second positioning portion is spaced from the associated cartridge, when the tray is located at the first inside position.

Abstract: A cartridge detachably mountable to an image forming apparatus including a main assembly and a detachably supported supporting member movable between a first position where the cartridge is provided at an image formable position, and a second position retracted from the first position. The cartridge includes a supported portion for being supported by contacting with a supporting portion provided in the supporting member when the supporting member is in the second position, and a suppressed portion for suppressing rotation of the cartridge about the supported portion by engaging with a suppressing portion in the supporting member when the supporting member is in the second position. When the supporting member is at the first position, the supported portion is spaced from the supporting portion and the suppressed portion is spaced from the suppressing portion.

Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a static magnetic field magnet, a gradient coil, a bore tube and a sealed space forming unit. The gradient coil is formed to be approximately cylindrical, arranged in a cylinder of the static magnetic field magnet, and adds a gradient magnetic field to the static magnetic field. The bore tube is formed to be approximately cylindrical and arranged in the cylinder of the gradient coil. The sealed space forming unit forms a sealed space enclosing the gradient coil between an inner circumferential side of the static magnetic field magnet and an outer circumferential side of the bore tube. At least a part of at least one of the side ends of the gradient coil does not make contact with the sealed space.