Patent application number | Description | Published |
20120155918 | FIXING DEVICE INCLUDING BELT GUIDE MEMBER AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A fixing device includes a fixing rotator unit and an induction heating portion. The fixing rotator unit includes a heating rotary belt, a pressing member being in contact with the inner surface of the heating rotary belt, a pressurizing rotator forming a fixing nip between the pressurizing rotator and the pressing member, a belt guide member including a guide portion and an extending portion, positioning the heating rotary belt, and guiding rotation. The induction heating portion includes a magnetic-flux generating portion, a magnetic core portion, and a support member supporting the magnetic-flux generating portion. The support member includes a positioning portion that positions the belt guide member by coming into contact with or engaging the extending portion to control a distance between the magnetic-flux generating portion and the outer surface of the heating rotary belt. | 06-21-2012 |
20130071154 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a pressing rotating body, a heating rotating belt, an induction coil, a magnetic core portion, and a belt guide member. The belt guide member is disposed on the inner side of the heating rotating belt and includes a coil side section that is disposed toward the induction coil relative to a rotational axis of the heating rotating belt and includes a temperature-rise corresponding portion and a non temperature-rise corresponding portion, and a nip side section that is disposed toward the pressing rotating body relative to the rotational axis and includes a paper-passing corresponding portion and a heat transfer portion disposed on the outer side of the paper-passing corresponding portion and having thermal conductivity higher than the thermal conductivity of the paper-passing corresponding portion. | 03-21-2013 |
20140241767 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing belt, a pressuring rotator, a pressing member, a heat source, a supporting member, and an end cap. The fixing belt is rotatably provided. The pressuring rotator is rotatably provided, and comes into pressure contact with the fixing belt to form a fixing nip between the fixing belt and the pressuring rotator. The pressing member presses the fixing belt from inside toward the pressuring rotator. The heat source is disposed outside of the fixing belt, and heats the fixing belt. The supporting member faces the heat source across the fixing belt, and supports the fixing belt from inside. The end cap is mounted to an end part in the direction of a rotation axis of the fixing belt, and is rotatably supported by the supporting member. | 08-28-2014 |
20140241768 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing belt, a pressuring rotator, a pressing member, a holding member, and an end cap. The fixing belt is rotatably provided. The pressuring rotator is rotatably provided, and comes into pressure contact with the fixing belt to form a fixing nip between the fixing belt and the pressuring rotator. The pressing member presses the fixing belt from inside toward the pressuring rotator. The holding member holds the pressing member. The end cap is mounted to an end part in a direction of a rotation axis of the fixing belt, and is movable in a radial direction of the fixing belt with respect to the holding member. | 08-28-2014 |
20140376934 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing belt, a pressuring rotation body, a drive source, a heat source, detected members, rotation detecting parts, a storing part and a controlling part. The storing part stores standard condition for occurrence difficulty of a slip between the fixing belt and detected members co-rotated with rotation of the fixing belt. The controlling part stops heating of the fixing belt by the heat source on a condition that both rotation detecting parts do not detect the rotation of the detected members within a first time when the drive source rotates the fixing belt in a situation unsatisfying the standard condition. The controlling part stops the heating on a condition that at least one of the rotation detecting parts does not detect the rotation of the detected members within a second time when the drive source rotates the fixing belt in a situation satisfying the standard condition. | 12-25-2014 |
20140376935 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing belt, a pressuring rotation body, a drive transmission member, a detected member, and a rotation detecting part. The fixing belt rotates around a rotation axis. The pressuring rotation body comes into pressure contact with the fixing belt to form a fixing nip. The drive transmission member is held by one end part of the fixing belt. The detected member is held by another end part of the fixing belt. The rotation detecting part detects the rotation of the detected member. The fixing belt is configured to co-rotate with the rotation of the drive transmission member by friction force between the one end part of the fixing belt and drive transmission member. The detected member is configured to co-rotate with the rotation of the fixing belt by friction force between the other end part of the fixing belt and detected member. | 12-25-2014 |
20140376979 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a fixing belt, a pressuring rotation body, a cap member and an elastic member. The cap member includes a main body part covering an outside of an end part of the fixing belt and a flange part covering an external diameter side of the end part. The elastic member includes a belt insertion part into which the end part is inserted, a cap insertion part into which the flange part is inserted and a contact part coming into contact with an internal side face of the main body part. When the fixing belt is deformed to an internal diameter side, the elastic member is elastically deformed to make the belt insertion part moved to the internal diameter side, and then, a gap is formed in at least a part between the internal side face of the main body part and the contact part. | 12-25-2014 |
20150301487 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - According to the present disclosure, a fixing device includes a heating member, a rotatable pressure roller, and a metal pattern. The heating member includes a heating rotary body configured to be heated by a heating device. The pressure roller is pressed against an outer circumferential surface of the heating rotary body. The metal pattern is disposed facing the heating member so as to extend in a sheet width direction which is equal to an axial direction of the pressure roller, and the metal pattern is formed of a metal wire of which a resistance varies according to variations in temperature of the heating member. | 10-22-2015 |