Abstract: Provided is a fixing device including a fixing unit that includes a pipe-shaped fixing member which includes an outermost layer including at least one selected from a group consisting of a hydrogenated nitrile rubber and a denatured hydrogenated nitrile rubber, and heats and pressurizes the recording medium to fix an unfixed developer image on a recording medium by bringing the outermost layer into contact with a surface of the recording medium which holds the developer image, the recording medium being transported while holding the unfixed developer image, and a heating unit that is disposed on an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium transported while holding the unfixed developer image.

Abstract: Provided is a fixing device including a fixing unit that includes a pipe-shaped fixing member which includes an outermost layer including at least one selected from a group consisting of a hydrogenated nitrile rubber and a denatured hydrogenated nitrile rubber, and heats and pressurizes the recording medium to fix an unfixed developer image on a recording medium by bringing the outermost layer into contact with a surface of the recording medium which holds the developer image, the recording medium being transported while holding the unfixed developer image, and a heating unit that is disposed on an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium transported while holding the unfixed developer image.

Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.

Abstract: Provided is a fixing device including a heating section that is arranged to be out of contact with a recording medium which is transported, and heats a developer image on the recording medium, a contact member that is arranged on a downstream side from the heating section in a transport direction of the recording medium, and is in contact with an image surface on a developer image side of the recording medium, and a folding member that is arranged between the heating section and the contact member, and folds a transport path of the recording medium from the heating section to the contact member to a side opposite to an image surface side from an extended line so that the contact member is positioned on the opposite side of the heating section from an extended line of the transport path which faces the heating section.

Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.

Abstract: Provided is a fixing device including a heating section that is arranged to be out of contact with a recording medium which is transported, and heats a developer image on the recording medium, a contact member that is arranged on a downstream side from the heating section in a transport direction of the recording medium, and is in contact with an image surface on a developer image side of the recording medium, and a folding member that is arranged between the heating section and the contact member, and folds a transport path of the recording medium from the heating section to the contact member to a side opposite to an image surface side from an extended line so that the contact member is positioned on the opposite side of the heating section from an extended line of the transport path which faces the heating section.

Abstract: A recording material processing apparatus includes a recording material supplying device supplying a recording material, an image recording device recording an image on the recording material, a recording material transporting mechanism and a burr curing device including a pressurizing member for curing the burrs at the edge of the recording material. The recording material transporting mechanism changes a transporting state of the recording material at a predetermined transportation changing position. The pressurizing member is provided on a recording material transporting path between the recording material supplying device and the transportation changing position and is provided on the side nearer to the recording material supplying device than a trailing end position. The trailing end position indicates a position of the trailing end of the recording material in the transporting path when a leading end of the recording material in the transporting direction passes the transportation changing position.

Abstract: An image forming apparatus includes: a transporting path; a heating unit on the transporting path that is movably provided in a direction coming in contact with and departing from a continuous recording medium and that heats the continuous recording medium; a braking unit that has a first braking member and a second braking member and that brakes transportation of the continuous recording medium by sandwiching in the continuous recording medium between the first and second braking members, wherein the first and second braking members are provided on upstream and downstream sides on the transporting path of the heating unit, respectively; and a control unit that controls that the heating unit is brought into contact with the continuous recording medium and the braking of the continuous recording medium is released by the braking unit.

Abstract: An image forming apparatus includes: a transporting path; a heating unit on the transporting path that is movably provided in a direction coming in contact with and departing from a continuous recording medium and that heats the continuous recording medium; a braking unit that has a first braking member and a second braking member and that brakes transportation of the continuous recording medium by sandwiching in the continuous recording medium between the first and second braking members, wherein the first and second braking members are provided on upstream and downstream sides on the transporting path of the heating unit, respectively; and a control unit that controls that the heating unit is brought into contact with the continuous recording medium and the braking of the continuous recording medium is released by the braking unit.

Abstract: A fixing device fixes a toner image carried on a recording medium. The fixing device includes a rotatable fixing roll member, a fixing belt member and a walk adjustment mechanism. The fixing belt member is wound on the fixing roll member so as to be rotatable. The walk adjustment mechanism changes a walk width of the fixing belt member in accordance with a width of the recording medium.

Abstract: An aspect of the invention is a recording medium transport device including: a rotating body pair including a pair of rotating bodies disposed on a transport path of a recording medium; a pressing mechanism pressing the rotating bodies in a direction to approach each other; elastically deformable first-large-diameter-portions provided at both axial direction outer-sides of a region where the recording medium passes of at least one of the rotating bodies, the first-large-portions having a larger diameter than the outer diameter at the region; and second-large-diameter-portions provided at both axial direction outer-sides of the region of at least one of the rotating bodies, the second-large-diameter-portions having a larger diameter than the outer diameter at the region and having a smaller diameter than the first-large-diameter-portions, and the second-large-diameter-portions forming a gap between peripheral faces of the rotating bodies at the region in a state where the first-large-diameter-portions are elas

Abstract: A recording material processing apparatus includes a recording material supplying device supplying a recording material, an image recording device recording an image on the recording material, a recording material transporting mechanism and a burr curing device including a pressurizing member for curing the burrs at the edge of the recording material. The recording material transporting mechanism changes a transporting state of the recording material at a predetermined transportation changing position. The pressurizing member is provided on a recording material transporting path between the recording material supplying device and the transportation changing position and is provided on the side nearer to the recording material supplying device than a trailing end position. The trailing end position indicates a position of the trailing end of the recording material in the transporting path when a leading end of the recording material in the transporting direction passes the transportation changing position.

Abstract: A fixing unit for fixing a toner image on a recording material includes: a rotatable fixing roll; a fixing belt stretched on the fixing roll; at least one tension roll stretching the fixing belt with the fixing roll; a pressurization member disposed to give a pressure to the fixing roll; and a stripping member disposed to press the outer surface of the fixing belt onto the pressurization member in a vicinity of a downstream side of a first contact portion between the fixing roll and the pressurization member.

Abstract: An image forming apparatus, which forms an image on a recording material using a toner containing a crystalline substance, the image forming apparatus includes: a fusing unit that fuses a toner on the recording material; and a sheet transport device that transports downstream the recording material on which a toner image is fused by the fusing unit, wherein the sheet transport device includes: a rotating member which comes into contact with the toner image fused on the recording material and has in a sheet's width direction a length of at least a sheet's width; and a temperature control unit that controls a temperature of the rotating member within a temperature range in which the crystalline substance is not quenched to become amorphous and which is equal to or lower than a melting point of the crystalline substance based on a measured value of the temperature of the rotating member.

Abstract: A fixing device fixes a toner image carried on a recording medium. The fixing device includes a rotatable fixing roll member, a fixing belt member and a walk adjustment mechanism. The fixing belt member is wound on the fixing roll member so as to be rotatable. The walk adjustment mechanism changes a walk width of the fixing belt member in accordance with a width of the recording medium.

Abstract: A fixing unit that fixes a toner image carried on a recording medium includes a rotation member, and a pressure belt module that is provided with a pressure belt, a pressure roller supporting the pressure belt and pressing the rotation member, and a belt-supporting roller supporting the pressure belt. The pressure roller includes a first roller that is formed into a cylindrical shape, and a second roller that is disposed inside the first roller and formed into a crown shape, in which an axially central portion thereof is larger in outer diameter than both end portions thereof.

Abstract: A fixing device which fixes a toner image borne on a recording medium includes a rotatable fixing roll member, a rotatable tension roll member, a rotating fixing belt member stretched between the fixing roll member and the tension roll member, a heater which heats the fixing belt member, a pressing member which presses a portion of the fixing roll member around which the fixing belt member is wound to form a nip part, and a belt moving direction changing member which is interposed between the fixing belt member and the fixing roll member on a downstream side of the nip part, and changes a moving direction of the fixing belt member. Width “Wbe” of the fixing belt member, width “Wpr” of the pressing member, and width “Wpe” of the belt moving direction changing member are set to satisfy the following relation: Wpr?Wbe<Wpe.

Abstract: A fixing unit for fixing a toner image on a recording material includes: a rotatable fixing roll; a fixing belt stretched on the fixing roll; at least one tension roll stretching the fixing belt with the fixing roll; a pressurization member disposed to give a pressure to the fixing roll; and a stripping member disposed to press the outer surface of the fixing belt onto the pressurization member in a vicinity of a downstream side of a first contact portion between the fixing roll and the pressurization member.

Abstract: A fixing device that fixes toner images carried on a recording material, including: a rotary member; a belt member that is brought into contact with the rotary member, wherein a nip part through which the recording material passes is formed between the belt member and the rotary member; and a roller member that stretches the belt member and presses the belt member against the rotary member, wherein the roller member includes an elastic layer, and a surface layer coated on a surface of the elastic layer, the surface layer being made of a material having a higher elastic modulus than that of the elastic layer.

Abstract: A fixing unit that fixes a toner image carried on a recording medium includes a rotation member, and a pressure belt module that is provided with a pressure belt, a pressure roller supporting the pressure belt and pressing the rotation member, and a belt-supporting roller supporting the pressure belt. The pressure roller includes a first roller that is formed into a cylindrical shape, and a second roller that is disposed inside the first roller and formed into a crown shape, in which an axially central portion thereof is larger in outer diameter than both end portions thereof.