Abstract: A fixing device includes a heating member configured to heat a toner image on a front surface of a recording medium; a pressing member having an outer circumferential surface formed with a concave portion into which a gripping portion configured to grip a front end side of the recording medium enters, the pressing member being configured to rotate and press the recording medium together with the heating member; a moving portion configured to cause the heating member and the pressing member to relatively move between a position where the heating member comes into contact with the outer circumferential surface of the pressing member directly or via the recording medium and a position where the heating member moves away from the outer circumferential surface of the pressing member when the concave portion passes; and a switching portion configured to switch, between high and low, a load to be applied to a contact portion between the heating member and the outer circumferential surface of the pressing member in a

Abstract: A heat generating device includes a honeycomb structure, a first electrode, and a second electrode. The honeycomb structure includes an outer wall and partition walls. The partition walls define a plurality of cells extending from a first end surface to a second end surface. The first electrode is provided on a profile surface of the honeycomb structure. The second electrode is provided on the profile surface, and is located away from the first electrode. The profile surface includes: a first portion located between the first electrode and the second electrode; and a second portion located on a side opposite to the first portion with respect to a center of a cross section of the honeycomb structure taken along a direction orthogonal to an extending direction of the cells. The honeycomb structure has a first slit. The first slit extends from the first portion toward the second portion.

Abstract: A rotation apparatus includes a first rotating body rotatable; a second rotating body movable to a contact position at which the second rotating body contacts an outer circumferential surface of the first rotating body and a separation position at which the second rotating body is separated from the first rotating body outward in a radial direction of the first rotating body and rotatable in a reverse direction to the rotation direction; a first drive mechanism that rotationally drives the first rotating body at a first circumferential speed and rotates the second rotating body at the contact position; and a second drive mechanism that generates a driving force, rotationally drives the second rotating body at a second circumferential speed lower than the first circumferential speed at the separation position, and applies a resistance force to the first rotating body via the second rotating body at the contact position.

Abstract: A fixing device includes a fixing roller and a fixing drum that rotates in a rotation direction with a recording medium having an image formed thereon pinched between the fixing roller and the fixing drum, to fix the image onto the recording medium. The fixing drum includes a drum body having a recessed portion formed on an outer circumferential surface thereof, and a sheet-shaped wound member that is wound around the outer circumferential surface and is attached to the drum body in a state in which a portion of the wound member on a downstream side in the rotation direction is bent radially inward of the drum body at a corner portion of the recessed portion.

Abstract: An image forming device, includes: a transfer unit that transfers a toner image onto a recording medium being conveyed; a main heating unit that is disposed at a downstream side of the transfer unit in a conveyance direction of the recording medium, heats the recording medium in contact with the recording medium, and fixes the toner image to the recording medium; a reversing unit that reverses front and back of the recording medium having the toner image fixed on a first surface of the recording medium by the main heating unit, and sends the recording medium to the transfer unit; a preheating unit that is arranged between the transfer unit and the main heating unit in the conveyance direction of the recording medium and heats the recording medium in a non-contact state, the preheating unit being configured to heat the recording medium so that, when the recording medium that is sent to the transfer unit by the reversing unit and on which the toner image is transferred to a second surface is heated, a temperatu

Abstract: A fixing device includes: a conveyance section that conveys a recording medium; a heating roll that rotates and heats the recording medium being conveyed by the conveyance section; a pressure roll that is disposed to face the heating roll and rotates, around which at least a portion of the recording medium being conveyed is wound, and that pressurizes the wound portion of the recording medium toward the heating roll; a gripping section that is disposed in the conveyance section, grips a leading end of the recording medium being conveyed, and releases the gripping of the leading end of the recording medium when the recording medium passes through a facing position where the pressure roll and the heating roll face each other; and a blowing section that blows air in a direction different from a direction toward the recording medium released from being gripped by the gripping section to cool the pressure roll.

Abstract: A fixing device includes: a heating roll that heats a recording medium having a toner image formed on the recording medium while rotating in contact with the recording medium; a pressure roll that sandwiches the recording medium with the heating roll to pressurize the recording medium; a first cleaning section that removes toner adhering to the heating roll; and a second cleaning section that is located downstream of the first cleaning section in a rotation direction of the heating roll and removes wax adhering to the heating roll.

Abstract: Provided is a supercharge including: an impeller; a scroll casing formed so as to surround the outer circumferential side of the impeller; a bearing casing arranged adjacent to the scroll casing; and coupling part that couples the scroll casing and the bearing casing to each other, the coupling part has a fastening bolt and a fastening bolt, a plurality of through holes are formed spaced apart from each other in the circumferential direction in the bearing casing, the scroll casing and the bearing casing are coupled to each other with a plurality of fastening bolt and a plurality of fastening bolt being inserted in the plurality of through hole, and the fastening bolt has higher tensile strength than the fastening bolt.

Abstract: A fixing device includes: a conveyor that conveys a recording medium in which a toner image is fixed onto a first face by heating and pressurizing and a toner image unfixed is held on a second face; a heating member that heats the toner image held on the second face of the recording medium conveyed by the conveyor in a contact state; a pressing member that pressurizes the recording medium against the heating member to fix the toner image held on the second face of the recording medium and contacts the toner image fixed onto the first face of the recording medium; and an irregular portion that is provided on a surface of the pressing member, has a plurality of protrusions and recesses, and has a difference in height between the recesses and the protrusions equal to or greater than a height of a toner layer in a solid toner image fixed onto the first face of the recording medium.

Abstract: A fixing device includes: a holding part that extends in a width direction of a recording medium being transported and that holds the recording medium; a pair of circulating parts that are attached to both ends of the holding part and that circulate to transport the recording medium; and a heating member that heats the recording medium in a non-contact manner and that is located in a space between the pair of circulating parts in the width direction.

Abstract: A transport unit includes a transport device including a loop member that turns and that has no ends, the transport device transporting a recording medium with the recording medium attracted to a surface of the loop member; a guide unit that changes a transport direction of the recording medium fed from the transport device and that guides the recording medium in one of multiple transport directions; and a controller that controls the transport device, based on the transport direction that is changed by the guide unit such that attraction force of the transport device is changed.

Abstract: A rotation device includes a rotator that includes a recessed portion formed on an outer circumferential surface and that rotates in a predetermined rotation direction, a removing unit that comes into contact with a portion of the outer circumferential surface in a range from an upstream end to a downstream end of the recessed portion in the rotation direction due to rotation of the rotator and that removes a foreign substance that adheres to the outer circumferential surface, an application unit that applies an inward load to the removing unit inward in a radial direction of the rotator, and an inclined surface that is located at the removing unit or the upstream end and that comes into contact with the other of the removing unit or the upstream end to move the removing unit entering the recessed portion due to the inward load outward in the radial direction of the rotator along with rotation of the rotator.

Abstract: A transport device includes multiple rotation members that rotate, a cycle member that has a loop shape, and that is wound around the multiple rotation members to cycle together with rotation of the rotation members, at least one holding member that is attached to the cycle member, that cycles together with the cycle member, and that holds a leading end portion of a recording medium while being spaced apart from each other in a width direction when the leading end portion arrives at a holding position, and a deformation member that deforms the leading end portion in a thickness direction throughout the width direction by time when the leading end portion arrives at the holding position.

Abstract: An image forming apparatus includes a transport unit that transports a recording medium and that includes a grip portion that grips the recording medium on which a toner image is formed, and a movement unit that moves the grip portion; a heating unit that heats the recording medium that is transported by the transport unit; and a controller that exerts control such that the transport unit stops transport after the recording medium is retracted to a position downstream of the heating unit in a case where the transport unit stops the transport.

Abstract: A fixing device includes: a first roller on which an elastic layer is formed; and a second roller that forms a clamping portion at which a recording medium is clamped between the first roller and the second roller, a groove extending in an axial direction being formed in an outer peripheral surface of the second roller, and the second roller not including an elastic layer.

Abstract: A transportation device includes a first transporter, a second transporter movable between a contact position and a separate position toward and away from the first transporter to hold a to-be-transported object between the second transporter and the first transporter in the contact position, and a transportation unit that transports the to-be-transported object to a nip area where the first transporter and the second transporter hold the to-be-transported object therebetween while the second transporter is located in the separate position. The second transporter moves from the separate position to the contact position to hold the to-be-transported object transported to the nip area by the transportation unit between the second transporter and the first transporter to transport the to-be-transported object.

Abstract: A rotary damper includes a lid (130) that closes an opening of a case (110), a protrusion (131) formed on the lid (130), and a groove (114) having an arc shape formed on the case (110). A bottom surface of the groove (114) has a gradient. The protrusion (131) moves in the groove (114) while contacting the bottom surface of the groove (114), thereby displacing the lid (130).

Abstract: A transport device includes: a first transport body; a second transport body that is movable between a contact position and a separate position with respect to the first transport body and that nips a transported material with the first transport body at the contact position; and a transport section that includes a holder to hold a leading end portion of the transported material and that transports the transported material toward a nip region where the first transport body and the second transport body nip the transported material in a state in which the second transport body is located at the separate position. After holding of the leading end portion by the holder for the transported material transported by the transport section has been released, the second transport body nips the transported material with the first transport body and transports the transported material.

Abstract: A heating device includes: a heating unit configured to heat a transported material being transported in a transport direction in a non-contact manner with respect to the transported material; and a facing portion that is disposed on a side opposite to the heating unit with respect to the transported material and faces the heating unit in a facing direction intersecting the transport direction, wherein a length of the heating unit in the transport direction is longer than a length of the facing portion in the transport direction, or a length of the heating unit in an intersecting direction intersecting the transport direction and the facing direction is longer than a length of the facing portion in the intersecting direction.

Abstract: Provided is a supercharge including: an impeller; a scroll casing formed so as to surround the outer circumferential side of the impeller; a bearing casing arranged adjacent to the scroll casing; and coupling part that couples the scroll casing and the bearing casing to each other, the coupling part has a fastening bolt and a fastening bolt, a plurality of through holes are formed spaced apart from each other in the circumferential direction in the bearing casing, the scroll casing and the bearing casing are coupled to each other with a plurality of fastening bolt and a plurality of fastening bolt being inserted in the plurality of through hole, and the fastening bolt has higher tensile strength than the fastening bolt.