Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.

Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.

Abstract: A fixing device includes: a rotary body; a pressure body; a frame supporting the rotary body; and a pressure varying mechanism for providing a nip pressure to a nip region formed between the rotary body and the pressure body. The pressure varying mechanism includes a first spring and a second spring for urging one of the rotary body and the pressure body. The first spring applies a first urging force, and the second spring applies a second urging force acting in an opposite direction from the first urging force. The pressure varying mechanism can vary the nip pressure between a first nip pressure and a second nip pressure smaller than the first nip pressure. The nip pressure becomes the first nip pressure while only the first urging force is applied, and becomes the second nip pressure while both of the first urging force and the second urging force are applied.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.

Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.

Abstract: A fixing device includes: a rotary body; a pressure body; a frame supporting the rotary body; and a pressure varying mechanism for providing a nip pressure to a nip region formed between the rotary body and the pressure body. The pressure varying mechanism includes a first spring and a second spring for urging one of the rotary body and the pressure body. The first spring applies a first urging force, and the second spring applies a second urging force acting in an opposite direction from the first urging force. The pressure varying mechanism can vary the nip pressure between a first nip pressure and a second nip pressure smaller than the first nip pressure. The nip pressure becomes the first nip pressure while only the first urging force is applied, and becomes the second nip pressure while both of the first urging force and the second urging force are applied.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.

Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.

Abstract: A fuser is described including a heater, a belt, a rotating member, and a pad. A nip portion is formed between the belt and the rotating member as the pad presses the belt toward the rotating member. The pad is biased toward a restricting member. The biasing may be performed by one or more springs. The spring may be a compression spring, a tension spring, and/or a plate spring among other types of springs.

Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.

Abstract: A fuser is described including a heater, a belt, a rotating member, and a pad. A nip portion is formed between the belt and the rotating member as the pad presses the belt toward the rotating member. The pad is biased toward a restricting member. The biasing may be performed by one or more springs. The spring may be a compression spring, a tension spring, and/or a plate spring among other types of springs.

Abstract: A fuser is described including a heater, a belt, a rotating member, and a pad. A nip portion is formed between the belt and the rotating member as the pad presses the belt toward the rotating member. The pad is biased toward a restricting member. The biasing may be performed by one or more springs. The spring may be a compression spring, a tension spring, and/or a plate spring among other types of springs.