An apparatus for folding sheets or sheet stacks, including at least two folding/transport rollers, transport device and knife, the transport device defining transport plane E for sheets or sheet stacks fed in transport direction R, knife being movable substantially perpendicularly to and through transport plane E, folding/transport rollers being arranged above transport plane E, oppositely on both sides of knife, axis of rotation A of folding/transport rollers extending substantially perpendicularly to transport plane E, and at least two folding/transport rollers each having, at their end facing toward transport plane E, rounded portion, such that narrowing gap S is formed between the at least two folding/transport rollers, into which gap sheets or sheet stacks can be introduced by means of knife so as to be folded there and at same time conveyed away in transport direction R, and to corresponding method.

The invention relates to a method and a device for arranging sheets in an overlapping position in a transfer unit arranged between a first processing station and a second processing station following the first processing station in a transport direction of the sheets. The sheets to be overlapped are transported from the first processing station to the transfer unit, in a transport plane and each individually lying behind one another. A respective rear, in the transport direction, edge of the sheets coming from the first processing station, is raised relative to the transport plane exclusively by the use of blown air, and a second subsequent sheet is slid under the rear edge of the respective preceding first sheet.

A printing press arrangement has a plurality of processing stations for processing sheets. The plurality of processing stations are arranged one after another in a transport direction of the sheets for in-line processing of the sheets. At least one of the processing stations is configured as a non-impact printing device. A transfer device, which is arranged upstream of the active region of the non-impact printing device, is provided for transferring the sheets from a first processing station, which is arranged upstream of the non-impact printing device, to the non-impact printing device. The transfer device aligns, in each case, at least one of the axial register and the circumferential register and the diagonal register of each of the sheets in register relative to the printing position of the non-impact printing device.

The invention relates to a method and a device for arranging sheets in an overlapping position in a transfer unit arranged between a first processing station and a second processing station following the first processing station in a transport direction of the sheets. The sheets to be overlapped are transported from the first processing station to the transfer unit, in a transport plane and each individually lying behind one another. A respective rear, in the transport direction, edge of the sheets coming from the first processing station, is raised relative to the transport plane exclusively by the use of blown air, and a second subsequent sheet is slid under the rear edge of the respective preceding first sheet.

The ink jet recording apparatus includes: transport means that transports paper having a recording surface, on which an image is formed using an aqueous ink, along a transport path; heating means that is provided along the transport path; guide means that is provided along the transport path and supports the paper using a guide surface having suction holes; and suction means that suctions the paper through the suction holes of the guide surface, a suction region and a non-suction region are set when the paper is transported, the suction region in which the paper is suctioned by the suction means is set upstream of a first position of the transport path, the non-suction region is set downstream of the first position, and the first position is set at a position in which a residual water content in the paper is 1.0 g/m.sup.2 to 3.0 g/m.sup.2.

A liquid discharge apparatus includes: a liquid discharge head; a conveyer that supports and conveys a medium; a blower that is disposed on the upstream side of the liquid discharge head or the downstream side of the liquid discharge head and suppresses the change of the posture of the medium by sending the air to the medium; a temperature adjuster that is disposed on the side of the blower opposite to the liquid discharge head in the medium conveying direction and adjusts the temperature of an object to a temperature higher than the ambient temperature of the liquid discharge head or a temperature lower than the ambient temperature of the liquid discharge head; and a blast controller sends an operation stop command or an air reduction command to the blower at a blast region-pass timing at which the medium passes through a blast region of the blower.

A supply apparatus for paper of which one side is printed and another side is not printed and which is used for a single-side printer much cheaper than a double-side printer and having a smaller occupied area than that of the double-side printer is improved to be easily, promptly, safely, and surely set. A supply apparatus reverses a plurality of sheets of stacked paper of which one side has been printed so that a non-printed surface comes to an upper surface and supplies the stacked paper to a printer again. The non-printed paper supply apparatus for the single-side printer includes two palettes which sandwich and hold the stacked paper from upper and lower sides, a plurality of alignment holding tools which is provided between the palettes and is adjusted according to a volume of the stacked paper, a pair of fastening and reversing tools including reversing bars in which reversing shafts for reverse are formed on sides of the palettes opposite to each other, and a pair of reverse assisting stands which pivotally support reversing shafts of each fastening and reversing tool. The alignment holding tool and the fastening and reversing tool are respectively fixed to upper/lower palettes with fixing tools which are attached/detached in a single operation.

The ink jet recording apparatus includes: transport means that transports paper having a recording surface, on which an image is formed using an aqueous ink, along a transport path; heating means that is provided along the transport path; guide means that is provided along the transport path and supports the paper using a guide surface having suction holes; and suction means that suctions the paper through the suction holes of the guide surface, a suction region and a non-suction region are set when the paper is transported, the suction region in which the paper is suctioned by the suction means is set upstream of a first position of the transport path, the non-suction region is set downstream of the first position, and the first position is set at a position in which a residual water content in the paper is 1.0 g/m.sup.2 to 3.0 g/m.sup.2.

A liquid discharge apparatus includes: a liquid discharge head; a conveyer that supports and conveys a medium; a blower that is disposed on the upstream side of the liquid discharge head or the downstream side of the liquid discharge head and suppresses the change of the posture of the medium by sending the air to the medium; a temperature adjuster that is disposed on the side of the blower opposite to the liquid discharge head in the medium conveying direction and adjusts the temperature of an object to a temperature higher than the ambient temperature of the liquid discharge head or a temperature lower than the ambient temperature of the liquid discharge head; and a blast controller sends an operation stop command or an air reduction command to the blower at a blast region-pass timing at which the medium passes through a blast region of the blower.

A sheet stacking device (77) is provided with a sheet discharge platform (76) on which image forming sheets (P), which have been subjected to heating and drying processing after images are formed using ink, are stacked; and a nozzle (162) that blows air to a side surface of a sheet bundle in a horizontal direction. Air is blown to the sheet bundle stacked on the sheet discharge platform (76) while the height of the sheet discharge platform (76) is adjusted by a sheet discharge platform raising and lowering device (100) so that a gap is formed between the sheets in the vertically middle portion of the sheet bundle. According to the sheet stacking device (77), a plurality of image forming sheets (P) can be efficiently cooled on the sheet discharge platform. Accordingly, the occurrence of blocking can be suppressed.