Abstract: A sheet processing apparatus includes a conveyor, a first folding roller, a second folding roller, a return conveyance passage, and a third folding roller. The conveyor conveys a sheet along a main conveyance passage in a conveyance direction. The second folding roller facing the first folding roller across the main conveyance passage conveys the sheet by a first conveyance amount. The return conveyance passage having a curvature is branched from the main conveyance passage at a branching position and is merged to the main conveyance passage at a merging position. The third folding roller facing the second folding roller across the return conveyance passage conveys the sheet by a second conveyance amount smaller than the first conveyance amount of the second folding roller. The second folding roller is on an outer peripheral side and the third folding roller is on an inner peripheral side of the return conveyance passage.

Abstract: An enclosing device that inserts an enclosure into an envelope includes an envelope conveyance passage, a first conveyor, a second conveyor, a conveyance guide, and a flap opener. The envelope is conveyed in the envelope conveyance passage. The first conveyor conveys the envelope in the envelope conveyance passage. The second conveyor is positioned downstream from the first conveyor in a conveyance direction of the envelope in the envelope conveyance passage. The conveyance guide is positioned between the first conveyor and the second conveyor in the envelope conveyance passage. The flap opener opens a flap of the envelope. At least one of a part of the conveyance guide or one end of the flap opener is positioned to straddle the envelope conveyance passage.

Abstract: An enclosing device to insert an enclosure into an envelope conveyed to an enclosing position includes an envelope conveyor and an enclosing unit. The envelope conveyor conveys the envelope to the enclosing position. The enclosing unit opens a frontage of the envelope such that the enclosure is inserted into the envelope that has reached the enclosing position and includes an opening amount adjuster to adjust an opening amount of the frontage when the enclosure is inserted into the envelope. The opening amount adjuster adjusts the opening amount, depending on a flap length and a body length. The flap length is a length of a flap of the envelope in a conveyance direction in which the envelope is conveyed to the enclosing position. The body length is a length of a body of the envelope in the conveyance direction.

Abstract: A media processing apparatus includes a slit insertable a sheet bundle of multiple sheets, a sheet-bundle holder, a liquid applier, a press binder, and a controller. The sheet-bundle holder holds the sheet bundle and detects the thickness of the sheet bundle. The liquid applier applies liquid to the sheet bundle. The press binder presses and binds the sheet bundle to perform press-binding process. The controller causes the sheet-bundle holder to hold the sheet bundle and detect the thickness of the sheet bundle, determines whether to cause the liquid applier to apply liquid to the sheet bundle based on the thickness of the sheet bundle, causes the liquid applier to apply the liquid to the sheet bundle when it is determined that the thickness of the sheet bundle is equal or larger than a prescribed thickness, and causes the press binder to press and bind the sheet bundle.

Abstract: A medium processing device includes a conveyor to convey multiple sheets in a conveyance direction; a tray to stack the multiple sheets; a first binder to perform a first binding process; a second binder to perform a second binding process; a common guide extending in a main scanning direction; a first branch guide branched from one end of the common guide in the main scanning direction to a first standby position; and a second branch guide branched from the one end of the common guide in the main scanning direction to a second standby position. The first binder is movable between the first standby position and the manual binding position along the first branch guide and the common guide. The second binder is movable between the second standby position and the manual binding position along the second branch guide and the common guide.

Abstract: A medium processing apparatus includes: a binder to bind multiple sheets at a binding position to form a sheet bundle; a sheet inserter having an opening into which the sheet bundle is insertable from an outside of the sheet inserter to a bindable region having the binding position; and a binding position verifier allowing the multiple sheets, inserted from the opening to the bindable region, to be verifiable from an outside of the sheet inserter.

Abstract: A sheet processing apparatus includes: an ejection tray; an internal tray; a first conveyor to convey a sheet medium in a first direction in which the sheet medium is ejected to the ejection tray; a second conveyor to come into contact with and separate from sheet media stacked on the internal tray to convey the sheet media in a second direction different from the first direction; a crimp binder downstream from the internal tray in the second direction to execute crimp binding on the sheet media stacked on the internal tray; and control circuitry. When a subsequent sheet medium, which is subsequent to a preceding sheet medium of the sheet media stacked on the internal tray, is conveyed in the first direction while contacting the preceding sheet medium, the control circuitry causes the crimp binder to press a downstream end of the preceding sheet medium in the second direction.

Abstract: A media processing apparatus includes: an internal tray; an ejection tray; a first conveyor to convey a sheet medium in a first conveyance direction leading to the ejection tray via the internal tray; a second conveyor to convey the medium in a second conveyance direction; a binder including a pair of clampers to clamp sheet media stacked on the internal tray and being switchable among an out-of-contact state in which the clampers are out of contact, a clamping state in which the media are clamped by the clampers, and a binding state in which the media are pressed and bound by the clampers. The circuitry switches the binder into the clamping state when an (N+1)-th sheet medium is conveyed in the first direction while contacting an N-th sheet medium in a state in which N sheets of sheet media are stacked on the internal tray, N being a natural number.

Abstract: A media conveying apparatus includes: a pair of first defining members defining an upstream part of a conveyance path in a conveyance direction; a pair of second defining members defining a downstream part of the conveyance path in the conveyance direction; a first conveyor to convey a medium in the upstream part in the conveyance direction; a second conveyor to convey the medium in the downstream part in the conveyance direction; and a tray disposed downstream from the pair of second defining members in the conveyance direction. The tray stacks the medium ejected from the conveyance path. The pair of first defining members and the pair of second defining members are movable relative to each other in the conveyance direction to lengthen and shorten the conveyance path including the upstream part and the downstream part.

Abstract: An envelope processing apparatus inserts an enclosure into an envelope and includes a first conveyor, a first ejector, a second conveyor, a second ejector, and circuitry. The first conveyor conveys the enclosure to an enclosing position. The envelope in which the enclosure is enclosed is ejected to the first ejector. The second conveyor conveys the envelope to the enclosing position via an envelope conveyance passage extended in a substantially vertical and up-and-down direction and conveys the envelope in which the enclosure is inserted to the first ejector. The second ejector is separate from the first ejector. The enclosure is ejected to the second ejector. The circuitry controls a conveyance operation of the first conveyor and the second conveyor.

Abstract: An enclosing apparatus for enclosing an enclosure into an envelope at an enclosing position includes a conveyance roller that conveys the envelope to the enclosing position and an envelope conveyance path through which the envelope is conveyed. An enclosing support is disposed in the envelope conveyance path and supports enclosing of the enclosure into the envelope. The enclosing support retracts a flap of the envelope from the envelope conveyance path while the conveyance roller conveys the envelope to the enclosing position.

Abstract: A medium processing apparatus for processing a medium ejected from an image forming apparatus includes a conveyor, a slit, a medium processing device, a stopper, and detectors. The conveyor conveys the medium ejected from the image forming apparatus. The slit communicates with an opening of a housing into which a medium is manually inserted from outside and includes a placement face on which the inserted medium is placed. The placement face has a first side and a second side orthogonal to the first side. The first and second sides are not parallel to a direction in which a side face of the housing extends. The medium processing device processes the medium conveyed by the conveyor or the medium placed on the slit. The stopper regulates edges of the medium along the first and second sides of the placement face. The detectors are disposed on the stopper to detect the medium.

Abstract: A liquid application device for applying liquid to a plurality of media to be crimped by a crimping device includes a liquid applier and a liquid-applier moving mechanism. The liquid applier applies liquid to the plurality of media. The liquid-applier moving mechanism moves the liquid applier to a first position at which the liquid applier applies liquid to a medium on a conveyance path in the liquid application device and a second position at which the liquid applier applies liquid to the plurality of media inserted through a liquid application slit of the liquid application device.

Abstract: A sheet processing device includes an upstream device, a downstream device, and a controller as circuitry. The upstream device includes multiple rollers to convey a sheet in a conveyance direction and perform a sheet processing. The downstream device is downstream from the upstream device in the conveyance direction. The downstream device includes a sheet sensor to detect the sheet. The controller controls a timing to rotate the multiple rollers of the upstream device to perform the sheet processing in response to a detection of the sheet by the sheet sensor.

Abstract: A sheet folder includes a conveyor conveying a sheet, a first folding roller and a second folding roller that form a first nip, a third folding roller forming a second nip with the second folding roller, a first guide movable between a first guide posture and a first retracted posture, a second guide movable between a second guide posture and a second retracted posture, and a motor. The motor rotates the second folding roller forward to convey the sheet toward the first nip, reverse to convey the sheet toward the second nip, moves the first guide to arrange in the first guide in the first guide posture or the first retracted posture, and moves the second guide to arrange the second guide in the second guide posture or the second retracted posture.

Abstract: A sheet folding apparatus includes a conveyor, a first folding roller, a second folding roller, a third folding roller, a guide, a motor, and a driving force transmission mechanism. The motor causes the second folding roller to perform either forward rotation in which the second folding roller rotates to convey a sheet on a main conveying path in a conveying direction and to convey the sheet on a reflux conveying path from a joining position toward a branching position or backward rotation in a direction opposite to the forward rotation. The driving force transmission mechanism rotates the guide toward a first posture from a second posture in conjunction with the forward rotation of the second folding roller and rotates the guide from the first posture toward the second posture in conjunction with the backward rotation of the second folding roller.

Abstract: An envelope processing apparatus for enclosing an enclosure in an envelope includes an envelope conveyance path, an enclosure supplier, an envelope supplier, a flap opener, and an envelope stacker. The envelope conveyance path extends in a substantially vertical direction to convey the envelope. The enclosure supplier supplies the enclosure to the envelope via the envelope conveyance path. The envelope supplier supplies the envelope to the envelope conveyance path, The flap opener opens a flap portion of the envelope between the envelope supplier and the envelope conveyance path. The envelope stacker stacks the envelope ejected from the envelope conveyance path.

Abstract: An envelope processing apparatus that inserts an enclosure into an envelope includes an envelope conveyor, a flap opener, an enclosure pusher, and circuitry. The envelope conveyor extends in a vertical direction and conveys the envelope to an enclosing position via an envelope conveyance passage as a passage in which the envelope is conveyed. The flap opener opens a flap of the envelope. The enclosure pusher pushes the enclosure toward an opening of a body of the envelope conveyed to the enclosing position with the flap open. The circuitry changes a pushing amount of the enclosure into the envelope and adjusts the pushing amount based on the opening of the body of the envelope within a specified range from an inside to an outside of the body of the envelope.

Abstract: An envelope processing apparatus conveys an envelope to an enclosing position and encloses an enclosure on which specific information is formed at a formation position. The enclosing device includes: an envelope conveyor to convey the enclosure to the enclosing position to insert the enclosure into the envelope; a sensor to acquire, as an image, a structure of the envelope during conveyance, and acquire transparent-portion information indicating a position of a transparent portion in the envelope; an envelope holder to hold the envelope in a state in which the enclosure is insertable; and control circuitry to output position adjustment information for adjusting a position of the envelope in a width direction of the envelope at the enclosing position or a position of the specific information in a conveyance direction of the envelope, based on relative positions between the formation position of the specific information and the position of the transparent portion.

Abstract: An enclosing-sealing apparatus includes a flap opener that opens a flap of an envelope while the envelope is conveyed to an enclosing position. A first envelope detector is disposed upstream from the flap opener in an envelope conveyance direction and detects both ends of the envelope in the envelope conveyance direction. A second envelope detector is disposed downstream from the flap opener in the envelope conveyance direction and detects both ends of the envelope in the envelope conveyance direction in an open state in which the flap opens. A controller determines the open state of the flap based on a first detection result sent from the first envelope detector and a second detection result sent from the second envelope detector. The controller performs troubleshooting for enclosing the enclosure into the envelope if the controller determines that the open state of the flap is faulty.