A traversing element is provided for a spinning machine that produces a roving. The traversing element includes a guide segment disposed to guide the roving onto a surface of a tube or a roving bobbin, and a support segment. The guide segment is configured at an end of the support segment and an opposite end of the support segment is connectable to a support of the spinning machine. A closed cavity is provided in the traversing element, the closed cavity partially filled with a liquid. Heat that occurs in the guide segment due to friction between the guide segment and the roving when the traversing element is operating is absorbed by the liquid.

A sheet discharge device includes a discharge conveyance path, a pair of discharge rollers, a side wall, a sheet stacking tray, a first fan, and a second fan. The discharge conveyance path communicates with a discharge port through which a sheet having passed through a fixing portion is discharged. The pair of discharge rollers convey the sheet along the discharge conveyance path and discharge the sheet from the discharge port. The side wall extends downward from the discharge port. The sheet stacking tray extends from the side wall in a sheet discharge direction in which the sheet is discharged by the pair of discharge rollers. The first fan is disposed below the discharge conveyance path and blows air toward the discharge conveyance path. The second fan is disposed above the discharge port and blows air from above the discharge port toward the sheet stacking tray.

A modular radial impeller drum for cooling print media in a printing device are disclosed. For example, the modular radial impeller drum includes a plurality of impeller modules coupled together to form a surface to transport the print media. Each one of the plurality of impeller modules includes a cylindrical outer surface, a cylindrical center axis inside of the cylindrical outer surface, and a plurality of impeller blades coupled between the cylindrical outer surface and the cylindrical center axis, wherein the plurality of impeller blades the plurality of impeller modules is varied across a length of the modular radial impeller drum.

A modular radial impeller drum for cooling print media in a printing device are disclosed. For example, the modular radial impeller drum includes a plurality of impeller modules coupled together to form a surface to transport the print media. Each one of the plurality of impeller modules includes a cylindrical outer surface, a cylindrical center axis inside of the cylindrical outer surface, and a plurality of impeller blades coupled between the cylindrical outer surface and the cylindrical center axis, wherein the plurality of impeller blades the plurality of impeller modules is varied across a length of the modular radial impeller drum.

An imaging system includes a substrate cooler that reduces the temperature of substrates bearing dried ink images. The substrate cooler has a plurality of rollers, at least one actuator operatively connected to the plurality of rollers, and a controller operatively connected to the least one actuator. The controller is configured to operate the at least one actuator to move the rollers relative to one another to vary the length of the path along which the substrates move through the substrate cooler.

A modular radial impeller drum for cooling print media in a printing device are disclosed. For example, the modular radial impeller drum includes a plurality of impeller modules coupled together to form a surface to transport the print media. Each one of the plurality of impeller modules includes a cylindrical outer surface, a cylindrical center axis inside of the cylindrical outer surface, and a plurality of impeller blades coupled between the cylindrical outer surface and the cylindrical center axis, wherein each one of the plurality of impeller blades are angled, wherein the plurality of impeller modules are coupled together such that the plurality of impeller blades of each one of the plurality of impeller modules are aligned across a length of the modular radial impeller drum.

A transport device includes a first belt member, a second belt member, a first roller, a second roller, a third roller, a fourth roller, a fifth roller, and a sixth roller. The second belt member is in contact with the first belt member to form a contact portion in cooperation with the first belt member. The first roller is capable of adjusting a tilt in a longitudinal direction of the first roller. The second roller is capable of adjusting a tilt in a longitudinal direction of the second roller. The third and fourth rollers are located adjacent to the first roller. The fifth and sixth rollers are located adjacent to the second roller. The third roller, the fourth roller, the fifth roller, and the sixth roller each have a uniform diameter in a longitudinal direction of the roller, and are disposed at positions other than the contact portion.

A post-processing device includes a discharge port through which a sheet is discharged, an intermediate tray, a discharge tray and an air sending part. The air sending part includes an upper air sending member, an upper switching member, a lower air sending member, a lower switching member and a controller. The upper air sending member generates a downward air flow from above the discharge port. The upper switching member is distributable the air flow generated by the upper air sending member to above the intermediate tray and to above the discharge tray. The lower air sending member generates an upward air flow from below the discharge port. The lower switching member is distributable the air flow generated by the lower air sending member to below the intermediate tray and to above the discharge tray. The controller controls the upper switching member and the lower switching member.

A discharge unit discharges a sheet having an image thereon. A switching unit switches between stacking the sheet discharged from the discharge unit on a stacking unit or conveying the sheet from the discharge unit toward an image reading apparatus. A conveyance unit conveys the sheet conveyed via the switching unit to a reading unit. A cooling unit cools the sheet discharged from the discharge unit or cools the reading unit.

An imaging system includes a substrate cooler that reduces the temperature of substrates bearing dried ink images. The substrate cooler has a plurality of rollers, at least one actuator operatively connected to the plurality of rollers, and a controller operatively connected to the least one actuator. The controller is configured to operate the at least one actuator to move the rollers relative to one another to vary the length of the path along which the substrates move through the substrate cooler.