A printing apparatus includes a displacement member configured to be in contact with discharged print media and be displaced according to the amount of a stack of the print media, and detects the stack amount based on the displacement of the displacement member. The apparatus performs a first or second detection operation based on the detected stack amount. In the first detection operation, after a specified number of print media are discharged with the displacement member positioned at the evacuation position where it does not come into contact with a print medium, the displacement member is brought into contact with the print media to detect the stack amount. In the second detection operation, the stack amount is detected with the displacement member in contact with the print media.

A stacking device includes a stacking unit, a regulation member, an interlocking member, a pivoting member provided on the interlocking member, a sensor having an output, and a determination unit. The stacking unit stacks a sheet on the stacking unit. The regulation member moves in a first direction and a second direction opposite to the first direction and regulates a position of the sheet by abutting on an edge of the sheet stacked in the stacking unit. The interlocking member interlocks with the regulation member. The pivoting member rotates. The sensor output changes based on positions of the interlocking member and the pivoting member. The determination unit determines a size of the sheet based on the output of the sensor.

A sheet transport device includes a transport guide for guiding, along its transport surface, a sheet in a transport direction, a first transport roller pair, a second transport roller pair, a skew roller pair, a reference wall, and an actuator. The skew roller pair alone transports, in a skewed manner toward an end of the transport surface in a width direction orthogonal to the transport direction, the sheet spaced from the first transport roller and the second transport roller. The reference wall is positioned at the end of the transport surface in the width direction and extends along the transport direction. The actuator is disposed downstream of the skew roller pair and upstream of the second transport roller pair in the transport direction and between the end and a center of the transport surface in the width direction.

A sheet sorting apparatus includes a first tray detachable from an apparatus main body, a second tray arranged below the first tray, a discharge unit to discharge a sheet to the first or second tray, a tray detecting unit to detect that the first tray is detached from the apparatus main body, a full stack detecting unit to detect a fully stacked condition of the first tray, and a control unit to control the discharge unit. In a case where the tray detecting unit detects that the first tray is detached from the apparatus main body, the control unit controls the discharge unit not to discharge a sheet to the second tray when a number of sheets discharged to the second tray reaches a threshold number of sheets, even though the full stack detecting unit does not detect the fully stacked condition.

A material dispenser comprising a housing, a mounting for a roll of material to be dispensed, and a material level indicator, in which said mounting comprises a first support member for rotationally supporting a first side of a roll of material to be dispensed in a plane, in which said material level indicator comprises an arm rotationally mounted to said dispenser at a pivot point, said arm comprising a visual indicator member at a first end thereof and a lateral abutment axially displaced from said visual indicator member for engaging with said first side of said roll of material, in which said arm is rotatable about said pivot point between a first position in which said arm is substantially parallel with said plane and said lateral abutment traverses said plane, and a second position in which said arm is arranged at an angle to said plane, and said lateral abutment and said visual indicator member are laterally displaced.

A sheet post-processing apparatus includes an output tray on which a sheet ejected from a sheet outlet is stacked; a wall disposed downstream from the output tray in a sheet ejection direction; and an alignment member configured to contact and move the sheet on the output tray, to bring a rear end of the sheet in the sheet ejection direction into contact with the wall for alignment. The alignment member is selectively set at three positions of: an alignment position protruding beyond the wall toward the output tray to contact the sheet on the output tray; a withdrawn position inward of the wall; and a home position between the alignment position and the withdrawn position.

A flange portion extending outward from a main shaft portion is disposed outside a side plate with respect to a position of an attachment member in a main direction when the attachment member is mounted to the side plate. A restriction slot is formed in the attachment member such that the flange portion can be fitted in and pass through the restriction slot. In the middle of the process where the attachment member is mounted to a second side plate in the main direction, the flange portion is fitted in the restriction slot, thereby the sheet detecting member is restricted from rotating, and one of a pair of projection portions of a sheet guide member is inserted in a hole of the attachment member.

The sheet feeding apparatus includes a stacking device on which a sheet is stacked, a feeding device, which is configured to feed the stacked sheet, a contact portion arranged at a position at which the stacked sheet is brought into contact with the contact portion, and a moving member, which is movable in a direction in which a protruding amount of the stacked sheet changes.

A packaging machine for packaging products to be packaged using a stretchable film has a film transporter supplying the film. The film transporter has first and second belt conveyors that each have first and second transport belts, which are synchronously driven and arranged next to one another in a film transport direction. A belt conveyor is movable in a direction perpendicular to the film transport direction, and has a movable film guide to insert the film into the film transporter. The film guide has a guide plate for guiding the film. The guide plate has first and second recesses in an upper edge in the vertical direction facing the belt conveyors. The belt conveyors are to be inserted into a respective one of the recesses. The film transporter has cleaners for the belt conveyors.

A sheet housing device includes: a housing; and a sheet cassette. The sheet cassette has: a detection mechanism; and a pair of cursors. The detection mechanism includes: a detection switch; a first actuator; and a second actuator. A first cursor pushes down a pressed part of the first actuator and a connection part pushes up a connected part of the second actuator, and the second actuator swings in a first rotation direction from a first posture and the second actuator is set to a second posture in which a switch pressing part is capable of pressing a switch pressed part. The switch pressing part has: a first pressing part that is connected to a front end of a pressing arm; and a second pressing part that is disposed to protrude further toward an upstream side in the first rotation direction than the pressing arm does.