Abstract: A perforation device includes a shaft, a perforation motor, at least a first perforation portion, at least a second perforation portion, at least a first cam for reciprocating a first perforation blade in the first perforation portion, at least a second cam for reciprocating a second perforation blade in the second perforation portion, a rotation speed detecting portion, a home position detecting portion, and a controller. In second perforation processing in which the shaft is rotated one turn to perform first perforation with the first perforation portion and second perforation with the second perforation portion in sequence, the controller senses, with the rotation speed detecting portion, the rotation speed of the shaft after the first perforation blade penetrates the sheet in the first perforation and, based on the rotation speed detecting, the controller determines the timing of starting braking control in the second perforation and performs braking control.

Abstract: A post-processing apparatus (1) includes a first conveyance path (41), a first processing part (55), a second conveyance path (95) and a merging conveyance path (97), and the first processing part (55) includes a conveying rollers pair (80) including a first roller (81) and a second roller (83) conveying the sheet along a first direction; a first folding rollers pair (84) including the first roller (81) and a third roller (85) forming a first nip, conveying the sheet along a second direction and performing a folding processing along a first fold line; a second folding rollers pair (86) including the third roller (85) and a fourth roller (87) forming a second nip, conveying the sheet along a third direction and performing a folding processing along a second fold line; a first folding guide (89) movable to the first nip; and a second folding guide (91) movable to the second nip.

Abstract: A postprocessing device includes a processing tray, a first transport roller, a second transport roller, a sidetrack, a sidetrack roller, and a controller. The controller shunts a preceding recording medium to the sidetrack by rotating the sidetrack roller, determines, on a basis of a length of the preceding recording medium in a transport direction, a timing to stop the rotation of the sidetrack roller such that, when the sidetrack roller is made to start rotating at a predetermined timing to start, a leading edge of a following recording medium transported by the second transport roller becomes aligned with a leading edge of the preceding recording medium, stops the rotation of the sidetrack roller at the determined timing, and transports the preceding recording medium with the following recording medium stacked thereon, to the processing tray, by rotating the second transport roller and the sidetrack roller at the reference timing to start.

Abstract: A post-processing apparatus (1) includes a first conveyance path (41), a first processing part (55), a second conveyance path (95) and a merging conveyance path (97), and the first processing part (55) includes a conveying rollers pair (80) including a first roller (81) and a second roller (83) conveying the sheet along a first direction; a first folding rollers pair (84) including the first roller (81) and a third roller (85) forming a first nip, conveying the sheet along a second direction and performing a folding processing along a first fold line; a second folding rollers pair (86) including the third roller (85) and a fourth roller (87) forming a second nip, conveying the sheet along a third direction and performing a folding processing along a second fold line; a first folding guide (89) movable to the first nip; and a second folding guide (91) movable to the second nip.

Abstract: A perforation device includes a shaft, a perforation motor, at least a first perforation portion, at least a second perforation portion, at least a first cam for reciprocating a first perforation blade in the first perforation portion, at least a second cam for reciprocating a second perforation blade in the second perforation portion, a rotation speed detecting portion, a home position detecting portion, and a controller. in second perforation processing in which the shaft is rotated one turn to perform first perforation with the first perforation portion and second perforation with the second perforation portion in sequence, the controller senses, with the rotation speed detecting portion, the rotation speed of the shaft after the first perforation blade penetrates the sheet in the first perforation and, based on the rotation speed detecting, the controller determines the timing of starting braking control in the second perforation and performs braking control.

Abstract: A sheet post processing device includes a loading tray on which a sheet conveyed thereto is loaded, a side end edge binding stapler fixed at a position opposed to a side end edge, along a conveyance direction, of a sheet bundle of a plurality of sheets loaded on the loading tray, the side end edge binding stapler performing a first binding process on the side end edge, a conveyance unit that moves the sheet bundle on the loading tray in the conveyance direction, and a controller that controls the conveyance unit. The controller can cause the conveyance unit to move the sheet bundle in the conveyance direction so as to perform the first binding process on the sheet bundle with the side end edge binding stapler at a plurality of positions along the side end edge.

Abstract: The sheet processing device includes a processing tray, a processing device, a discharge port, a discharge rollers pair, a supporting arm and an interlock mechanism. The discharge rollers pair has a lower roller and an upper roller. The supporting arm supports the upper roller and is turnable between a first position where the upper roller comes into contact with the sheet and a second position where the upper roller separates upwardly from the sheet. The interlock mechanism includes an actuator, a switch and a switch moving mechanism. The actuator is turned with an upwardly turning of the supporting arm. The switch detects the actuator to detect that the supporting arm is turned to the second position. The switch moving mechanism moves the switch to a switch non-detective position when the processing is not performed and moves the switch to a switch detective position when the processing is performed.

Abstract: A sheet post-processing device includes: an alignment member which aligns a sheet bundle on a stacking tray; and a stapler which performs binding processing on a rear end of the sheet bundle. The stapler includes: a first stapler which moves along the rear end of a first sheet bundle and performs the binding processing on a plurality of positions at the rear end of the first sheet bundle; and a second stapler which performs, at one part of an end portion of the rear end on one side, binding processing different from the first stapler. The alignment member includes: a first alignment member and a second alignment member which align the sheet bundle in a first stacking position; and a third alignment member which is fixed to a position corresponding to the second stapler and which aligns the sheet bundle in a second stacking position with the first alignment member.

Abstract: A sheet post processing device includes a loading tray on which a sheet conveyed thereto is loaded, a side end edge binding stapler fixed at a position opposed to a side end edge, along a conveyance direction, of a sheet bundle of a plurality of sheets loaded on the loading tray, the side end edge binding stapler performing a first binding process on the side end edge, a conveyance unit that moves the sheet bundle on the loading tray in the conveyance direction, and a controller that controls the conveyance unit The controller can cause the conveyance unit to move the sheet bundle in the conveyance direction so as to perform the first binding process on the sheet bundle with the side end edge binding stapler at a plurality of positions along the side end edge

Abstract: A sheet post-processing device includes: an alignment member which aligns a sheet bundle on a stacking tray; and a stapler which performs binding processing on a rear end of the sheet bundle. The stapler includes: a first stapler which moves along the rear end of a first sheet bundle and performs the binding processing on a plurality of positions at the rear end of the first sheet bundle; and a second stapler which performs, at one part of an end portion of the rear end on one side, binding processing different from the first stapler. The alignment member includes: a first alignment member and a second alignment member which align the sheet bundle in a first stacking position; and a third alignment member which is fixed to a position corresponding to the second stapler and which aligns the sheet bundle in a second stacking position with the first alignment member.

Abstract: The sheet processing device includes a processing tray, a processing device, a discharge port, a discharge rollers pair, a supporting arm and an interlock mechanism. The discharge rollers pair has a lower roller and an upper roller. The supporting arm supports the upper roller and is turnable between a first position where the upper roller comes into contact with the sheet and a second position where the upper roller separates upwardly from the sheet. The interlock mechanism includes an actuator, a switch and a switch moving mechanism. The actuator is turned with an upwardly turning of the supporting arm. The switch detects the actuator to detect that the supporting arm is turned to the second position. The switch moving mechanism moves the switch to a switch non-detective position when the processing is not performed and moves the switch to a switch detective position when the processing is performed.

Abstract: A vibration motor includes a stationary portion, a vibrating body, and an elastic member. The stationary portion includes a casing and a coil unit. The vibrating body includes a first weight portion, a second weight portion, and a magnet portion. The vibrating body is supported such that the vibrating body can vibrate in a lateral direction relative to the stationary portion. The elastic member is positioned between the stationary portion and the vibrating body. The length of the magnet portion in the lateral direction is smaller than a spacing between the first and second weight portions in the lateral direction. Gaps are provided between the first weight portion and a first magnet and between the second weight portion and a second magnet. The length of a coil member in the lateral direction is smaller than the length of the magnet portion in the lateral direction.

Abstract: A vibration motor includes a stationary portion, a vibrating body supported to vibrate in a lateral direction with respect to the stationary portion, and an elastic member positioned between the stationary portion and the vibrating body. The elastic member includes two or more first bent portions bent in a longitudinal direction orthogonal to the lateral direction, one or more second bent portions bent toward a side opposite to the first bent portion in the longitudinal direction, and flat portions connected to ends of the first bent portions and the second bent portions. The number of first bent portions is greater than that of second bent portions, the first bent portions and the second bent portions are alternately connected by the flat portions, and the maximum width of the first bent portions in the lateral direction is smaller than the minimum width of the second bent portions in the lateral direction.

Abstract: A loudspeaker includes a bottom plate, an internal magnet, an internal plate, an external magnetic part, a frame, a diaphragm, and a voice coil. The internal plate includes a cutout portion so that the internal plate is smaller than the internal magnet when viewed from the top surface of the internal plate. Between the voice coil and the internal plate, there are a holding portion holding magnetic fluid and a void part having a void. The magnetic fluid is held in part of the cutout portion.

Abstract: A sheet housing device includes a supporting member, a driving pulley, a driven pulley, a timing belt, a driving part, a stacking tray and rotating members. The driving pulley and the driven pulley are rotatably provided at one end and another end in a longitudinal direction of the supporting member, respectively. The timing belt is windingly stretched between the pulleys. The driving part drives and rotates the driving pulley. The stacking tray is fixed to the timing belt and attached to the supporting member to move between both ends of the supporting member according to rotation of the timing belt. The rotating members are provided at another end side more than a rotational center of the driving pulley and at both outsides more than the timing belt and are rotatably attached by having a rotating shaft parallel to a rotating shaft of the driving pulley.

Abstract: A loudspeaker includes a bottom plate, an internal magnet, an internal plate, an external magnetic part, a frame, a diaphragm, and a voice coil. The internal plate includes a cutout portion so that the internal plate is smaller than the internal magnet when viewed from the top surface of the internal plate. Between the voice coil and the internal plate, there are a holding portion holding magnetic fluid and a void part having a void. The magnetic fluid is held in part of the cutout portion.

Abstract: A sheet post-processing apparatus includes a processing tray, a shift member, a discharge tray, a discharge roller pair, and a pressing member. The shift member moves a sheet loaded on the processing tray in a sheet width direction. The discharge roller pair discharges a sheet on the processing tray onto the discharge tray. The pressing member presses down a sheet discharged onto the discharge tray. The pressing member has an arm portion which rotates in the sheet conveyance direction about a rotation fulcrum, and a roller which is attached to the arm portion to be rotatable in the sheet width direction, and the pressing member is selectively disposed in a first position where the roller presses down the upstream-side end part of a sheet discharged onto the discharge tray, or in a second position where the roller contacts a lower surface of a sheet on the processing tray.

Abstract: A sheet housing device includes a supporting member, a driving pulley, a driven pulley, a timing belt, a driving part, a stacking tray and rotating members. The driving pulley and the driven pulley are rotatably provided at one end and another end in a longitudinal direction of the supporting member, respectively. The timing belt is windingly stretched between the pulleys. The driving part drives and rotates the driving pulley. The stacking tray is fixed to the timing belt and attached to the supporting member to move between both ends of the supporting member according to rotation of the timing belt. The rotating members are provided at another end side more than a rotational center of the driving pulley and at both outsides more than the timing belt and are rotatably attached by having a rotating shaft parallel to a rotating shaft of the driving pulley.

Abstract: An image forming apparatus includes an apparatus main body, a post-processing device, a first magnetic body, and a second magnetic body. The apparatus main body includes an ejecting part configured to eject a sheet toward an ejecting space. The post-processing device is configured to be slidable between an attached position and a detached position. The post-processing device includes a post-processing part and a movable guide. The movable guide is movable between an ordinary position and an opening position. The first magnetic body magnetically attracts the second magnetic body so as to hold the movable guide at the opening position, in a state where the post-processing device is shifted to the detached position. The first magnetic body separates from the second magnetic body and releases magnetic attraction to the second magnetic body when the post-processing device slides from the detached position to the attached position.

Abstract: An image forming apparatus includes an apparatus main body, a post-processing device, a first magnetic body, and a second magnetic body. The apparatus main body includes an ejecting part configured to eject a sheet toward an ejecting space. The post-processing device is configured to be slidable between an attached position and a detached position. The post-processing device includes a post-processing part and a movable guide. The movable guide is movable between an ordinary position and an opening position. The first magnetic body magnetically attracts the second magnetic body so as to hold the movable guide at the opening position, in a state where the post-processing device is shifted to the detached position. The first magnetic body separates from the second magnetic body and releases magnetic attraction to the second magnetic body when the post-processing device slides from the detached position to the attached position.