Abstract: A separation device includes a separator that separates a recording medium from a rotator and a plurality of recesses disposed on a conveyance path side face of the separator over which the recording medium is conveyed in a recess span in a recording medium conveyance direction and at least in a conveyance span where the recording medium is conveyed. The plurality of recesses includes a first recess extending in a first extension line that is oblique relative to the recording medium conveyance direction and a second recess being adjacent to the first recess in a direction perpendicular to the recording medium conveyance direction. The second recess extends in a second extension line that is oblique relative to the recording medium conveyance direction and overlaps the first extension line of the first recess in the direction perpendicular to the recording medium conveyance direction to define an overlap span.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt and including an elastic layer as a surface layer. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in a recording medium conveyance direction. The presser brings the fixing belt into contact with the pressure rotator.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in a recording medium conveyance direction. The presser brings the fixing belt into contact with the pressure rotator. A gap retainer contacts the nip former and is coupled to the presser to retain isolation of the presser from the nip former.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in the rotation direction of the fixing belt. The presser brings the fixing belt into contact with the pressure rotator. A mover is coupled to the presser to move the presser between a contact position where the presser brings the fixing belt into contact with the pressure rotator and an isolation position where the presser isolates the fixing belt from the pressure rotator.

Abstract: A fixing device includes a separator disposed downstream from a nip former in a recording medium conveyance direction and isolated from a pressure rotator via a fixing belt. The separator stretches the fixing belt. A presser is interposed between a fixing nip formed between the living belt and the pressure rotator and an upstream end of the separator in a rotation direction of the fixing belt. The presser comes into contact with an inner circumferential surface of the fixing belt to press the fixing belt against the pressure rotator. A pressure adjuster, contacting the pressure rotator, changes a pressing position of the pressure rotator relative to the fixing belt to adjust pressure exerted from the pressure rotator to the fixing belt. A presser position adjuster, contacting the presser, changes a presser position of the presser relative to the fixing belt according to the pressing position of the pressure rotator.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in a recording medium conveyance direction. The presser brings the fixing belt into contact with the pressure rotator. A gap retainer contacts the nip former and is coupled to the presser to retain isolation of the presser from the nip former.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt and including an elastic layer as a surface layer. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in a recording medium conveyance direction. The presser brings the fixing belt into contact with the pressure rotator.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A separator is disposed downstream from the nip former in a recording medium conveyance direction and stretches the fixing belt. The separator is spaced apart from the pressure rotator via the fixing belt. A presser is interposed between an exit of the fixing nip and an upstream end of the separator in the rotation direction of the fixing belt. The presser comes into contact with an inner circumferential surface of the fixing belt to press the fixing belt against the pressure rotator.

Abstract: A fixing device includes a fixing belt that is endless and rotatable in a rotation direction and a nip former stretching the fixing belt. A pressure rotator presses against the nip former via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed. A presser is disposed downstream from an exit of the fixing nip in the rotation direction of the fixing belt. The presser brings the fixing belt into contact with the pressure rotator. A mover is coupled to the presser to move the presser between a contact position where the presser brings the fixing belt into contact with the pressure rotator and an isolation position where the presser isolates the fixing belt from the pressure rotator.

Abstract: A separation device includes a separator that separates a recording medium from a rotator and a plurality of recesses disposed on a conveyance path side face of the separator over which the recording medium is conveyed in a recess span in a recording medium conveyance direction and at least in a conveyance span where the recording medium is conveyed. The plurality of recesses includes a first recess extending in a first extension line that is oblique relative to the recording medium conveyance direction and a second recess being adjacent to the first recess in a direction perpendicular to the recording medium conveyance direction. The second recess extends in a second extension line that is oblique relative to the recording medium conveyance direction and overlaps the first extension line of the first recess in the direction perpendicular to the recording medium conveyance direction to define an overlap span.

Abstract: A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a pressure rotator to press against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A rotation load applicator is coupled to one of the fixing rotator and the pressure rotator to apply a rotation load to the one of the fixing rotator and the pressure rotator. The rotation load is in a range of from 0.1 Nm to 0.6 Nm.

Abstract: A fixing device includes a fixing rotator rotatable in a predetermined direction of rotation and a pressure rotator to press against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed. A rotation load applicator is coupled to one of the fixing rotator and the pressure rotator to apply a rotation load to the one of the fixing rotator and the pressure rotator. The rotation load is in a range of from 0.1 Nm to 0.6 Nm.

Abstract: A fixing device includes a fixing rotator, a pressing rotator, and a guide. The pressing rotator forms a fixing nip with the fixing rotator. The guide guides a recording medium to the fixing nip. The guide includes a guide surface that contacts a surface of the recording medium against a guide the recording medium. The guide surface is provided parallel to a line tangent to the fixing rotator and the pressing rotator.

Abstract: A sheet separation device includes a separator disposed to contact one face of a sheet conveyed through a nip between conveyors contacting each other. The separator configured to separate from surfaces of the conveyors the sheet conveyed through the nip. The separator includes a conveyance face and a slanted face. The conveyance face is configured to contact and convey the sheet conveyed through the nip. The slanted face is disposed closer to the nip than the conveyance face and inclined with respect to the conveyance face toward one conveyor of the conveyors at a same side as the one face of the sheet.

Abstract: A cleaning device includes a web sheet, a holding member, a reel member, a drive device, a pressing member, and a rotational load-applying device. The web sheet slides against and cleans a surface of a cleaning target object. The holding member holds the web sheet wound around the holding member to be reeled out. The reel member has the web sheet wound around the reel member to be reeled in. The drive device drives the reel member to rotate. The pressing member presses the web sheet against the cleaning target object. The rotational load-applying device applies a load to rotation of the holding member. The load is changeable depending on an amount of the web sheet held by the holding member.

Abstract: A cleaning device includes a web sheet, a holding member, a reel member, a drive device, a pressing member, and a rotational load-applying device. The web sheet slides against and cleans a surface of a cleaning target object. The holding member holds the web sheet wound around the holding member to be reeled out. The reel member has the web sheet wound around the reel member to be reeled in. The drive device drives the reel member to rotate. The pressing member presses the web sheet against the cleaning target object. The rotational load-applying device applies a load to rotation of the holding member. The load is changeable depending on an amount of the web sheet held by the holding member.

Abstract: A fixing device includes a fixing belt rotatable in a predetermined direction of rotation; a pressing belt to frictionally contact the fixing belt and rotatable in a direction counter to the direction of rotation of the fixing belt; a stationary fixing pad disposed inside a loop formed by the fixing belt; a stationary pressing pad disposed inside a loop formed by the pressing belt; and a fixing belt heater disposed inside the loop formed by the fixing belt to heat the fixing belt. The fixing pad presses against the pressing pad to form a fixing nip therebetween with the fixing belt and the pressing belt interposed between the fixing pad and the pressing pad. A recording medium bearing an unfixed toner image is conveyed through the fixing nip in a state in which the unfixed toner image contacts the fixing belt.

Abstract: The fixing device includes first and second heat sources, a rotatable fixing member heated by the first heat source, a rotatable pressing member heated by the second heat source and contacting the fixing member to form a fixing nip therebetween at which a toner image on a sheet is fixed thereto, and at least first and second temperature detectors determining temperatures of different surface portions of the pressing member. The pressing member has a width greater than that of the fixing member greater than the maximum width of the sheet accommodated by the fixing device. The first temperature detector determines the temperature of a surface portion of the pressing member, which is to be contacted with the sheet, and the second temperature detector determines the temperature of a second surface portion of the pressing member, which is not contacted with the fixing member even when the pressing member is rotated.

Abstract: A fixing device includes a fixing belt rotatable in a predetermined direction of rotation; a pressing belt to frictionally contact the fixing belt and rotatable in a direction counter to the direction of rotation of the fixing belt; a stationary fixing pad disposed inside a loop formed by the fixing belt; a stationary pressing pad disposed inside a loop formed by the pressing belt; and a fixing belt heater disposed inside the loop formed by the fixing belt to heat the fixing belt. The fixing pad presses against the pressing pad to form a fixing nip therebetween with the fixing belt and the pressing belt interposed between the fixing pad and the pressing pad. A recording medium bearing an unfixed toner image is conveyed through the fixing nip in a state in which the unfixed toner image contacts the fixing belt.

Abstract: The fixing device includes first and second heat sources, a rotatable fixing member heated by the first heat source, a rotatable pressing member heated by the second heat source and contacting the fixing member to form a fixing nip therebetween at which a toner image on a sheet is fixed thereto, and at least first and second temperature detectors determining temperatures of different surface portions of the pressing member. The pressing member has a width greater than that of the fixing member greater than the maximum width of the sheet accommodated by the fixing device. The first temperature detector determines the temperature of a surface portion of the pressing member, which is to be contacted with the sheet, and the second temperature detector determines the temperature of a second surface portion of the pressing member, which is not contacted with the fixing member even when the pressing member is rotated.