The relay conveyance device includes a relay conveyance path, a plurality of conveyance members, at least one detection member and a control device. The control device executes a correction processing such that, in a state where a first sheet and a second sheet positioned at the upstream side from the first sheet are conveyed along the relay conveyance path, a sheet interval from a detection end of the first sheet by the detection member to a detection start of the second sheet by the detection member is compared with a predetermined target value, when the sheet interval is smaller than the target value, the conveyance speed of the conveyance member is decreased so as to widen the sheet interval, and when the sheet interval is larger than the target value, the conveyance speed of the conveyance member is increased so as to shorten the sheet interval.

A suction fan of a sheet feeder sucks in air through a sheet feeding belt to generate flotation air. The suction fan uses the flotation air to attract set sheets by suction. A belt motor rotates a sheet feeding belt and feeds out a sheet of the set sheets. An interval measurer measures a sheet-to-sheet interval when the suction fan is attracting the sheet by suction. Based on an output of the interval measurer, a controller recognizes the sheet-to-sheet interval. Based on the recognized sheet-to-sheet interval, the controller adjusts a flow rate of the flotation air.

A suction fan of a sheet feeder sucks in air through a sheet feeding belt to generate flotation air. The suction fan uses the flotation air to attract set sheets by suction. A belt motor rotates a sheet feeding belt and feeds out a sheet of the set sheets. An interval measurer measures a sheet-to-sheet interval when the suction fan is attracting the sheet by suction. Based on an output of the interval measurer, a controller recognizes the sheet-to-sheet interval. Based on the recognized sheet-to-sheet interval, the controller adjusts a flow rate of the flotation air.

The relay conveyance device includes a relay conveyance path, a plurality of conveyance members, at least one detection member and a control device. The control device executes a correction processing such that, in a state where a first sheet and a second sheet positioned at the upstream side from the first sheet are conveyed along the relay conveyance path, a sheet interval from a detection end of the first sheet by the detection member to a detection start of the second sheet by the detection member is compared with a predetermined target value, when the sheet interval is smaller than the target value, the conveyance speed of the conveyance member is decreased so as to widen the sheet interval, and when the sheet interval is larger than the target value, the conveyance speed of the conveyance member is increased so as to shorten the sheet interval.

A paper supply device is equipped with a paper supply unit that sequentially supplies a plurality of print media, and a control unit that controls the paper supply unit. During sequential supply of a plurality of print media at a paper supply interval, in the case that it is necessary to secure a paper supply interval which is set in advance and is longer than the paper supply interval, a reference paper supply interval, based on a point in time which is a natural number multiple of the paper supply interval, and a post print process paper supply interval are compared. Print media are supplied at the post print process paper supply interval in the case that the post print process paper supply interval and the reference paper supply interval are different.

A method of transporting single-cut sheets cut from a continuous sheet for absorbent articles includes transporting the sheets by bonding an upstream end of each sheet to an outer surface of a first rotating body by adhesive; and transporting the sheets by holding the sheets on an outer surface of a second rotating body rotating faster than the first body, the sheets being transported from the first body in a state in which the upstream end of each sheet is on the first body, a portion of each sheet on the second body sliding relative to the outer surface of the second body such that each sheet is transported at the peripheral speed of the first body, after the adhesive is separated and the upstream end moves to the second body, the second body transporting the sheets at the peripheral speed of the second body.

A method of transporting single-cut sheets cut from a continuous sheet for absorbent articles includes transporting the sheets by bonding an upstream end of each sheet to an outer surface of a first rotating body by adhesive; and transporting the sheets by holding the sheets on an outer surface of a second rotating body rotating faster than the first body, the sheets being transported from the first body in a state in which the upstream end of each sheet is on the first body, a portion of each sheet on the second body sliding relative to the outer surface of the second body such that each sheet is transported at the peripheral speed of the first body, after the adhesive is separated and the upstream end moves to the second body, the second body transporting the sheets at the peripheral speed of the second body.