A printing apparatus includes a printing cylinder (14) that can hold sheets (4) and transfer them one by one continuously, first to fourth inkjet heads (41-44), and a feeder unit (2). The printing apparatus includes a speed reducer (72) that switches the speed of the feeder unit (2) between single-sided printing and double-sided printing. In single-sided printing, the feeder unit (2) is driven at a first supply speed at which the sheets (4) are supplied to the printing cylinder (14) one by one continuously, and the printing cylinder (14) is driven at a transfer speed at which the sheets (4) supplied from the feeder unit (2) one by one continuously are transferred. In double-sided printing, the printing cylinder (14) is driven at the transfer speed, and the feeder unit (2) is driven at a second supply speed that is the first supply speed. The printing apparatus that operates stably in both single-sided printing and double-sided printing can be provided.

A paper feeding device has a paper feed tray, a device body, a fan, a rectifying member, and a retreat mechanism. A paper bundle in which a plurality of sheets of paper are stacked can be placed on the paper feed tray. The rectifying member is positioned above the paper bundle placed on the paper feed tray in a state in which the paper feed tray is accommodated in an accommodating part of the device body. The rectifying member generates a negative pressure between the rectifying member and an uppermost sheet of paper of the paper bundle using airflow from the fan in a state in which the paper feed tray is accommodated in the accommodating part. The retreat mechanism displaces the rectifying member in conjunction with the paper feed tray so that the rectifying member retreats from the paper feed tray in at least one of a pull-out operation and a push-in operation of the paper feed tray.

A paper feeding device has a paper feed tray, a device body, a fan, a rectifying member, and a retreat mechanism. A paper bundle in which a plurality of sheets of paper are stacked can be placed on the paper feed tray. The rectifying member is positioned above the paper bundle placed on the paper feed tray in a state in which the paper feed tray is accommodated in an accommodating part of the device body. The rectifying member generates a negative pressure between the rectifying member and an uppermost sheet of paper of the paper bundle using airflow from the fan in a state in which the paper feed tray is accommodated in the accommodating part. The retreat mechanism displaces the rectifying member in conjunction with the paper feed tray so that the rectifying member retreats from the paper feed tray in at least one of a pull-out operation and a push-in operation of the paper feed tray.

Sheet feeder (4) for a machine (1) for the processing of sheet material such as paper or films, having a drive shaft (10), which extends substantially perpendicular to a sheet feeding direction and is provided with at least one suction gripper (12), which is rotated above the sheet material, when the drive shaft (10) is driven, wherein the suction gripper (12) is repositionable between an inactive position, in which it does not cooperate with the sheet material, and an active position, in which it can grip on the top side of the sheet material and carry this along.

A detaching method of sheets from a stack of sheets from a stack of sheets and a relative detaching apparatus is disclosed, including at least a gripping head of a handling device of sheets and a nozzle assembly apt to eject an air flow to a lateral edge of a stack of sheets, furthermore including: a storage assembly of pressurised air provided at least with a compressed-air tank equipped with a pressure multiplier and a relative first pressure adjuster; and a high-pressure pipe between the nozzle assembly and the storage assembly intercepted by a fast-opening electrovalve. The nozzle assembly is provided with a nozzle, supplied through the electrovalve, configured as a convergent/divergent spout.

A detaching method of sheets from a stack of sheets from a stack of sheets and a relative detaching apparatus is disclosed, including at least a gripping head of a handling device of sheets and a nozzle assembly apt to eject an air flow to a lateral edge of a stack of sheets, furthermore including: a storage assembly of pressurised air provided at least with a compressed-air tank equipped with a pressure multiplier and a relative first pressure adjuster; and a high-pressure pipe between the nozzle assembly and the storage assembly intercepted by a fast-opening electrovalve. The nozzle assembly is provided with a nozzle, supplied through the electrovalve, configured as a convergent/divergent spout.

An inserter hopper device for handling a pile of inserts includes a framework, a belly plate that is connected to the framework, a carry-down cam assembly including a plurality of carry-down cams on a rotatable carry-down cam shaft having a fixed location relative to the framework and a carry-down roller assembly including a plurality of carry-down rollers on a rotatable carry-down roller shaft having a movable location relative to the framework. The carry-down rollers are opposed to and spaced from the carry-down cams, providing a nip having a nip distance therebetween. At least one biasing element biases the carry-down roller shaft toward the nip. The inserts are moved through the nip individually. A thickness tuning adjustment assembly moves the carry-down roller assembly to adjust the nip distance. A vacuum assembly is in communication with a movable sucker assembly that has sucker ports being movable toward and away from the nip.

An inserter hopper device for handling a pile of inserts includes a framework, a belly plate that is connected to the framework, a carry-down cam assembly including a plurality of carry-down cams on a rotatable carry-down cam shaft having a fixed location relative to the framework and a carry-down roller assembly including a plurality of carry-down rollers on a rotatable carry-down roller shaft having a movable location relative to the framework. The carry-down rollers are opposed to and spaced from the carry-down cams, providing a nip having a nip distance therebetween. At least one biasing element biases the carry-down roller shaft toward the nip. The inserts are moved through the nip individually. A thickness tuning adjustment assembly moves the carry-down roller assembly to adjust the nip distance. A vacuum assembly is in communication with a movable sucker assembly that has sucker ports being movable toward and away from the nip.

A device for feeding sheet products into a thick sheet feeding machine including an insertion gantry, a feed carriage sliding on rails. The device includes an insertion head configured as a gantry. The insertion head includes a crosspiece and support legs positioned on the rails and a system of suction cups located in the crosspiece through a forward movement mechanism allowing the system to move. The device includes an insertion module moving vertically on guides of the insertion gantry, a base for placing the sheets, and an alignment control device for aligning the sheets with respect to the insertion module. The sheets are suctioned by the suction cups, which are moved by the forward movement mechanism in the direction of the insertion gantry.

A method for manufacturing an aerogel sheet according to the present invention includes: a step (a) of preparing a blanket having a plate shape; a step (b) of mixing silica sol with gelling catalyst to prepare a silica sol precursor; and a step (c) of injecting the silica sol precursor prepared in the step (b) to a surface of the blanket prepared in the step (a) through an injection device to gelate the silica sol precursor, wherein, in the step (c), the injection device injects the silica sol precursor while moving from one side to the other side of the surface of the blanket.