Abstract: An image forming apparatus includes a toner image holding member, a transfer unit, and a supply unit. The toner image holding member holds a toner image. The transfer unit transfers the toner image held by the toner image holding member to a recording medium. The supply unit supplies powder such that the powder is interposed between an end portion of the recording medium and the toner image holding member and/or the transfer unit if the recording medium includes an intermediate adhesive layer.

Abstract: An image-forming apparatus includes an image unit that forms an image using at least one of a white toner and a color toner having a lower storage modulus than the white toner and a fixing unit that fixes the image to a medium with heat. A time P calculated by subtracting a fixing time for which an image of the color toner alone is fixed to normal paper used as the medium from a fixing time for which an overlaid image of the white toner and the color toner is fixed to color paper used as the medium is more than 0 ms and less than 30 ms.

Abstract: A fixing device includes a heat assembly including an endless belt, a heat source, an attachment member having an attachment surface and first and second side surfaces, and a slide sheet having first and second end portions that are respectively fixed to a first fixing portion at the first side surface and a second fixing portion at the second side surface, the slide sheet having a larger length from the first end portion to the second end portion than a length of a path of the attachment member extending from the first fixing portion to the second fixing portion through the first side surface, the attachment surface, and the second side surface; and a pressure roller that presses the outer surface of the endless belt to the attachment surface.

Abstract: A fixing device includes: an endless belt member; a secured member disposed to contact the belt member; a support roller that rotatably supports the belt member; a heating unit that heats the belt member; and a rotary pressurizing roller that includes an elastic surface layer that is elastically deformed when the belt member is pressed against the secured member to form a fixing part. The secured member includes a recessed part provided on a surface of the secured member that faces the pressurizing roller and configured to curve the belt member into a recessed shape, projecting parts provided upstream and downstream of the recessed part, respectively, and configured to curve the belt member into a projected shape, and a region provided between at least one of the projecting parts and the recessed part and having a small curvature compared to the corresponding projecting part.

Abstract: A fixing device includes a fixing rotary body that heats and pressurizes, together with a recording medium, toner having particle diameter of 4.5 [?m] or less and a softening point of 100 [° C.] or higher and 125 [° C.] or lower to fix the toner on the recording medium, a heating unit that heats the fixing rotary body, and a pressurizing unit that sandwiches and pressurizes the toner and the recording medium in a contact part formed by the fixing rotary body, wherein the maximum pressure in the contact part is equal to or more than 2.9×105 [Pa], the width of the contact part in a movement direction of the recording medium is equal to or more than 10 [mm], and the heating time of the toner in the contact part is equal to or more than 20 [msec].

Abstract: A fixing device includes a heat assembly including an endless belt, a heat source, an attachment member having an attachment surface and first and second side surfaces, and a slide sheet having first and second end portions that are respectively fixed to a first fixing portion at the first side surface and a second fixing portion at the second side surface, the slide sheet having a larger length from the first end portion to the second end portion than a length of a path of the attachment member extending from the first fixing portion to the second fixing portion through the first side surface, the attachment surface, and the second side surface; and a pressure roller that presses the outer surface of the endless belt to the attachment surface.

Abstract: A fixing device includes a heat assembly including an endless belt, a heat source, an attachment member having an attachment surface and first and second side surfaces, and a slide sheet having first and second end portions that are respectively fixed to a first fixing portion at the first side surface and a second fixing portion at the second side surface, the slide sheet having a larger length from the first end portion to the second end portion than a length of a path of the attachment member extending from the first fixing portion to the second fixing portion through the first side surface, the attachment surface, and the second side surface; and a pressure roller that presses the outer surface of the endless belt to the attachment surface.

Abstract: A recording medium peeling device includes: a circularly moving section that has a moving surface circulating along a circulation course; and a pressing section that presses a recording medium passing through a pressing position in the circulation course, against the moving surface at the pressing position. The recording medium peeling device further includes: a peeling member that is disposed downstream from the pressing position in the circularly moving, is apart from the moving surface, is provided along the moving surface, extends in a direction crossing a direction of the circularly moving, and peels the recording medium after passing through the pressing position from the moving surface; and a protruding member that is disposed downstream from the peeling member in a direction in which the recording medium after being peeled by the peeling member proceeds, protrudes from the peeling member side to the recording medium side, and slopes downstream.

Abstract: An image forming apparatus includes an image forming unit that forms an image on a recording material; an endless belt member; a pressure member that applies pressure to the belt member; a pressing member that presses the belt member from an inner side of the belt member towards the pressure member; and an adjusting section that adjusts a position of an end portion of a nip part at a downstream side in a movement direction of the recording material and a position of a curved portion of the belt member by moving or deforming the pressing member, the nip part being formed by the belt member and the pressure member, the curved portion of the belt member being formed by an end portion of the pressing member at a downstream side in the movement direction of the recording material.

Abstract: A recording medium peeling device includes: a circularly moving section that has a moving surface circulating along a circulation course; and a pressing section that presses a recording medium passing through a pressing position in the circulation course, against the moving surface at the pressing position. The recording medium peeling device further includes: a peeling member that is disposed downstream from the pressing position in the circularly moving, is apart from the moving surface, is provided along the moving surface, extends in a direction crossing a direction of the circularly moving, and peels the recording medium after passing through the pressing position from the moving surface; and a protruding member that is disposed downstream from the peeling member in a direction in which the recording medium after being peeled by the peeling member proceeds, protrudes from the peeling member side to the recording medium side, and slopes downstream.

Abstract: An image forming apparatus includes: a fixing section that heats an image formed on a recording material to fix the image to the recording material; a first cooling section that cools the recording material to which the image is fixed; and a second cooling section that cools the recording material from an opposite side of a side, to which the image is fixed, of the recording material before the first cooling section cools the recording material.

Abstract: A sheet-member transport device includes an endless belt that is an endless band member formed by arranging fibers substantially in the form of a mesh, a surface at an outer periphery side of the endless belt being treated with surface processing so that the surface at the outer periphery side has a higher friction coefficient than a friction coefficient of a surface at an inner periphery side of the endless belt; and at least two rotary members, the endless belt being wound around the rotary members, the rotary members being rotated to move the endless belt around the two rotary members.

Abstract: A fixing device includes a heating rotation body, a heat source and a pressurization member. The heating rotation body has an endless peripheral surface that moves circularly. The heat source heats the heating rotation body. The pressurization member is in pressure-contact with the peripheral surface of the heating rotation body to press a recording medium, which passes through a nip between the pressurization member and the heating rotation body, against the peripheral surface of the heating rotation body. The pressurization member includes a base material and plural layers deposited on the base material. A volume resistance of a surface layer forming a surface of the pressurization member is larger than that of a layer disposed just below the surface layer. The layer disposed just below the surface layer is grounded.

Abstract: An image forming apparatus includes: an imaging device that forms a toner image based on image data and transfers the toner image to a recording medium; a fixing device including a pair of rotatable members that defines a contact pressing portion that allows the recording medium with the toner image to pass through, and heats and presses the recording medium with the toner image; a surface potential measuring device that measures a surface potential of at least one of the pair of rotatable members; and a controller that performs control to give an alert notification that at least one of the pair of rotatable members which contacts with the toner image to be fixed should be replaced, when a result of the surface potential measured by the surface potential measuring device has exceeded a predetermined value.

Abstract: An image forming apparatus includes an image forming section which transfers toner onto a latent image due to a difference of electrostatic potential to form a toner image, a transfer section which transfers the toner image onto a recording material directly or via an intermediate transfer body, a fixing section which passes the recording material carrying the toner image between a fixing rotation body and a pressurizing member contacted and pressed each other, and heats and pressurizes to fix the toner image, and a paper dust amount measuring section which measures an amount of paper dust adhering to the recording material. The image forming section forms an image pattern with high toner area coverage at a predetermined interval based on the measured amount of paper dust, and the fixing section fixes the image pattern with the high toner area coverage transferred onto a recording material.

Abstract: The recording medium deburring apparatus is provided with: a transporting device that transports a recording medium; and a pressure applying device that applies pressure to edge portions of the recording medium. The edge portions are in parallel to a transporting direction of the recording medium transported by the transporting device.

Abstract: An image forming apparatus includes: a fixing section that heats an image formed on a recording material to fix the image to the recording material; a first cooling section that cools the recording material to which the image is fixed; and a second cooling section that cools the recording material from an opposite side of a side, to which the image is fixed, of the recording material before the first cooling section cools the recording material.

Abstract: A fixing device for heating and pressing a recording medium carrying an unfixed toner image or an unfixed ink image to fix the unfixed toner image or the unfixed ink image on the recording medium, includes a heating roller which has a heating source and has an endless peripheral surface moves around an axis, a pressure roller which is pressed onto the peripheral surface of the heating roller, and presses the recording medium passing between the pressure roller and the heating roller onto the peripheral surface of the heating roller, and plural cleaning sections which are provided to make contact with the heating roller. At least one of the cleaning sections is set, at a portion making contact with the heating roller, to have a relatively negative potential with respect to a surface potential of the heating roller.

Abstract: An image forming apparatus includes an image forming section which transfers toner onto a latent image to form a toner image, a transfer section which transfers the toner image onto a recording material directly or via an intermediate transfer body, a fixing section which has a pair of rotatable members contacted and pressed each other, in which the recording material carrying the toner image is passed through the pair of rotatable members, and heats and presses the toner image to fix the toner image on the recording material, a cleaning section which cleans a peripheral surface of one of the pair of rotatable members, a paper dust amount measuring section which measures an amount of paper dust separably adhering to the recording material, before the toner image is transferred, and a control section which controls a cleaning operation rate of the cleaning section based on the measured amount of paper dust.

Abstract: An image forming apparatus includes: an imaging device that forms a toner image based on image data and transfers the toner image to a recording medium; a fixing device including a pair of rotatable members that defines a contact pressing portion that allows the recording medium with the toner image to pass through, and heats and presses the recording medium with the toner image; a surface potential measuring device that measures a surface potential of at least one of the pair of rotatable members; and a controller that performs control to give an alert notification that at least one of the pair of rotatable members which contacts with the toner image to be fixed should be replaced, when a result of the surface potential measured by the surface potential measuring device has exceeded a predetermined value.