Abstract: A sheet stacking apparatus having: a sheet discharge tray to move upward and downward; an alignment section including first and second regulating members to align a side edge of a sheet on the tray; a first drive section for moving the tray upward or downward; a second drive section for moving the regulating members in a conveyance width direction; and a control section for controlling the first and the second drive sections so as to: align the side edge of the sheet discharged on the tray on the basis of the position of the first regulating member; when a predetermined amount of the sheets are discharged on the tray, separate the sheets from the first regulating member and the second regulating member by moving the tray or the alignment section and, after that, move the regulating members in the conveyance width direction; and align the side edge of the sheets.

Abstract: A sheet processing apparatus including: a sheet supporting table that supports a sheet stack made of a plurality of sheets which have been folded; a stopper against which a first edge of the sheet stack which is a side to be cut of the sheet stack is pressed on the sheet supporting table; and a pushing member which pushes a second edge of the sheet stack so that the first edge is pressed against the stopper, wherein the pushing member comprises a first surface that is inclined with respect to a sheet supporting surface of the sheet supporting table so that the first surface restricts a height of the folded part of the sheet stack with respect to the sheet supporting surface when the pushing member presses the sheet stack towards the stopper.

Abstract: A sheet stacking apparatus includes: a stacking tray which stacks a fold-processed and ejected sheet, and descends in response to a mass of stacked sheets; and a first sheet pressing member which holds the stacked sheets downward from an upper side of the stacked sheets at a constant height.

Abstract: Oil which will serve as a lubricating fluid of a fluid dynamic pressure bearing is degassed in a first environment under a first pressure which is lower than atmospheric pressure. First and second members of the bearing are place in a second environment under a pressure lower than atmospheric pressure and higher than the pressure in the first environment. The degassed oil is supplied to the gap between bearing surfaces of the first and second members while the first and second members are in the second environment under pressure lower than atmospheric pressure and higher than the pressure in the first environment. Subsequently the pressure in the second environment is increased to force the oil into the gap between the bearing surfaces of the first and second members of the hydrodynamic fluid.

Abstract: A roller mechanism includes a roller and a support member that supports the rotation shaft. Herein, the support member includes a bearing having an outer ring and inner ring which rotate relatively to each other, and a sleeve that is fittingly fixed to the inner ring, wherein the sleeve and rotation shaft are fitted to each other by clearance fitting and further engaged with each other with respect to a rotation direction.

Abstract: A post-processing apparatus which has a trimming apparatus for trimming an edge of sheets to make booklets, wherein the trimming apparatus has an inserting means for insertion of sheets into trimming process section of the trimming apparatus, an edge sustaining member and an edge holding member for pinching the vicinity of the edge of the sheet during the trimming process and a shifting means to make the opening size variable for receiving sheets by changing the relative position between the edge holding member and the edge sustaining member and a controller for controlling the shifting means to change the opening size between the edge holding member and the edge sustaining member according to the number of the sheets to be trimmed.

Abstract: A sheet post-processing apparatus including: a sheet conveying section for conveying sheets to an intermediate stacker by a plurality of conveying rollers containing a conveying roller capable of changing the pressing force against an opposing roller; and a control section wherein, when the first sheet to be assigned to a succeeding bundle of sheets has passed through the conveying roller capable of changing the aforementioned pressing force, and has arrived upstream from the aforementioned intermediate stacker during post-processing a preceding bundle of sheets, the pressing force of the conveying roller capable of changing the aforementioned pressing force is made smaller than the value at the time of conveyance; and after a second sheet has passed through the conveying roller capable of changing the aforementioned pressing force, the pressure is changed to the value at the time of the conveyance.

Abstract: In a suspension control system a sky-hook command signal (B) obtained from velocity data obtained by integrating a sprung mass acceleration (?u) from a sprung mass acceleration sensor (9u) and an unsprung mass vibration damping command signal (C) obtained on the basis of an unsprung mass acceleration (?d) detected by an unsprung mass acceleration sensor (9d) are added together to obtain a control signal (A) for a damping characteristic inverting type shock absorber (6). The control signal (A) reflects the unsprung mass acceleration (?d) that leads in phase by 90° the piston speed. Accordingly, it is possible to compensate for a response delay due to an actuator (11), etc.

Abstract: A finisher for finishing a booklet having a bundle of center-folded sheets, includes: a detector for detecting an end on a side of a folded portion of the booklet: a moving device for conveying the booklet by movement thereof; a controller for controlling the movement of the moving device; and a cutting device for cutting an edge on a side opposite to the end of the booklet, which has been conveyed by the moving device to a cutting position. The controller controls the movement of the moving device from a position where the detector has detected the end of the folded portion to the cutting position so that a size of a booklet after being cut is kept constant for each of sheet sizes.

Abstract: Oil which will serve as a lubricating fluid of a fluid dynamic pressure bearing is degassed in a first environment under a first pressure which is lower than atmospheric pressure. First and second members of the bearing are place in a second environment under a pressure lower than atmospheric pressure and higher than the pressure in the first environment. The degassed oil is supplied to the gap between bearing surfaces of the first and second members while the first and second members are in the second environment under pressure lower than atmospheric pressure and higher than the pressure in the first environment. Subsequently the pressure in the second environment is increased to force the oil into the gap between the bearing surfaces of the first and second members of the hydrodynamic fluid.

Abstract: There is described an image forming system that includes an image forming apparatus provided with a first paper sheet outlet to eject the paper sheet outside therefrom; a post processing apparatus that is provided with a second paper sheet inlet; and a relay conveyance apparatus that is installed between the image forming apparatus and the post processing apparatus. The relay conveyance apparatus includes a relay conveyance unit, disposed at an upper space of the relay conveyance apparatus and provided with a first paper sheet inlet and a second paper sheet outlet and a coupling unit, which fixes the image forming apparatus and the post processing apparatus to the relay conveyance apparatus, in such a manner that the first paper sheet outlet and the second paper sheet outlet substantially coincide with the first paper sheet inlet and the second paper sheet inlet, respectively.

Abstract: A sheet holding apparatus having: first and second folding rollers; and first and second pressurizing rollers, wherein the apparatus introduces a sheet of paper by rotating at least the first folding roller to pass the sheet of paper between the first folding roller and the first pressurizing roller, while the two folding rollers are separated when the first pressurizing roller pressurizes the first folding roller; and folds the paper by creasing between the two folding rollers by rotating the two folding rollers in opposite directions when the pressurizing rollers respectively pressurize the two folding rollers, and by conveying the sheets of paper while holding them by the two folding rollers, wherein when folding, the two folding rollers are pressurized to each other, and a driving force is transferred from the first to the second folding roller, and the two folding rollers are rotated in the opposite directions.

Abstract: A sheet trimming apparatus including: a trimming section provided with a trimming cutter blade for trimming a sheet bundle; a paper scrap container for storing paper scraps separated from the sheet bundle by the trimming cutter blade; and a paper scrap guide member, which is provided to create a falling space where the paper scraps are made to fall from the trimming section to the paper scrap container, wherein the paper scrap guide member assumes a first state for expanding a gap in the falling space, and a second state for creating an inclined surface for guiding the paper scraps to fall.

Abstract: A cutting device that cuts an edge portion of a sheet bundle having plural sheets stacked, includes: a cutting blade; a paddle provided on a side of the cutting blade, which removes chips attached to the cutting blade by rubbing a side surface of the cutting blade; a controller which controls drive of the paddle. The controller includes a judging section which compares a length of the chips in a direction perpendicular to an edge side of the sheet bundle to be cut by the cutting blade with a predetermined length that has been preset. When the length of the chips is shorter than the predetermined length, the controller makes the paddle to rotate in a predetermined direction, and when the length of the chips is longer than the predetermined length, the controller makes the paddle to rotate in a reverse direction.

Abstract: A cutting device that cuts an edge portion of a sheet bundle to an even length, in which a plurality of sheet have been stacked, using a cutting blade, the cutting device includes: a paddle shaft capable of being rotated, which is connected to a drive source provided in the vicinity of the cutting blade; and a plurality of paddles provided on the paddle shaft in a rotary axis direction thereof; wherein the plurality of paddles are arranged in a single line with the same phase as each other on the paddle shaft.

Abstract: The piston 10 is constituted so as to rotate relative to the first cylinder 8 while moving relative to the first cylinder 8 in the axial direction when fluid is supplied to and discharged from the interior of the first cylinder 8, and the piston 16 is constituted to be incapable of rotation relative to the second cylinder 9, but capable of movement relative to the second cylinder 9 in the axial direction. Hence when fluid is supplied to and discharged from the interior of the first cylinder 8, the piston 10 is caused to rotate relative to the first cylinder 8 while moving relative to the first cylinder 8 in the axial direction, and the piston 16 is caused to move relative to the second cylinder 9 in the axial direction but prevented from rotating relative to the second cylinder 9. As a result, torsional elasticity is generated in shaft portions 4a and 5a.

Abstract: A collision between a vehicle and an obstacle is estimated, and based on the estimation result, vehicle deceleration control is performed by a brake actuator to reduce the collision and vehicle wheel load is controlled by a suspension actuator.

Abstract: A post processing apparatus for processing image-recorded sheets, having: a transporting unit for transporting a booklet comprising a plurality of image-recorded sheets; a trimming section for trimming the booklet; and an oscillating mechanism for oscillating the transporting unit to change a transporting plane angle of the transporting unit; wherein, the oscillating mechanism oscillates the transporting unit to arrange a first transporting plane angle at the time when the transporting unit receives the booklet and a second transporting plane angle at the time when the transporting unit conveys the booklet to the trimming section different from each other.

Abstract: An image forming apparatus having therein an image forming apparatus body and at least one post-processing apparatus, wherein there is provided an intermediate conveyance unit which is connected with and located between the image forming apparatus body and the post-processing apparatus and which has a sheet feed-in section that feeds in sheets ejected from the image forming apparatus body one by one at the same speed as the sheet ejection linear speed of the image forming apparatus body, a sheet storing section that stores two or more sheets which are fed in by the sheet feed-in section and a sheet feed-out section that feeds out the two or more sheets stored in the sheet-storing section with the two or more sheets superposed on each other, at the same speed as the receiving linear speed of the post-processing apparatus.

Abstract: A sheet conveying mechanism, which conveys a sheet on which a toner image has been fixed at a heat-fixing process, includes conveying rollers each of which is a single roller having the same diameter throughout a width for passing the sheet and is disposed in a predetermined section for a cooling process after the heat-fixing process, and includes a sheet conveying guide provided on the predetermined section and having a sheet-passing surface made in the same shape throughout the width for passing the sheet.