A transport device includes a rotating member that rotates; a circulating member that is loop-shaped and wrapped around the rotating member, the circulating member being circulated by rotation of the rotating member; a pair of pinching members attached to the circulating member and circulated together with the circulating member, the pair of pinching members changing from a separated state, in which the pair of pinching members are separated from each other, to a closely positioned state to pinch a transport object that has entered a space between the pair of pinching members in the separated state; and a guide unit positioned to overlap the pair of pinching members in the separated state when viewed in one direction along a rotational axis direction of the rotating member, the guide unit guiding the transport object into the space between the pair of pinching members in the separated state.

A printing apparatus includes a printing cylinder (17) that holds and transfers a sheet (4), a supply-side transfer cylinder (16 (sheet supply unit)) that supplies the sheet (4) to the printing cylinder (17) at a supply position (P1), and first to fourth inkjet heads (27-30). The printing apparatus includes a transfer mechanism (18) that receives the sheet (4) after printing at a receiving position (P2) and transfers the sheet (4) to one of a discharge route (44) and a reversing route (42). The reversing route (42) employs an arrangement that returns the reversed sheet (4) to the printing cylinder (17) at a return position (P3) located on the downstream side of the receiving position (P2) in the transfer direction of the sheet (4) and on the upstream side of the supply position (P1) in the transfer direction of the sheet (4). A cooling means (45) for cooling the transfer surface (24 (outer peripheral surface)) of the printing cylinder (17) is provided between the receiving position (P2) and the return position (P3). It is possible to provide the printing apparatus that suppresses an increase in the temperature of the transfer surface of the printing cylinder and always sets the temperature of the sheet at an appropriate temperature.

A rotary printing machine includes a printing cylinder, at least one clamping unit mounted on a printing surface of the printing cylinder, and a feeding control mechanism and an unloading control mechanism mounted to a lateral side of the printing cylinder for changing the clamping state of the clamping unit. When the clamping unit is moved to an unloading position, the unloading control mechanism can be operated to control the clamping unit to maintain a closed state, so that a workpiece can be brought by the printing cylinder to a feeding position again. Then, the feeding control mechanism can be operated to control the clamping unit at the feeding position to maintain a clamped state, so that printing can be repeated on the workpiece to form multiple layers of ink and create three-dimensional printed layers showing a specific visual effect.

A winding apparatus that can restrain a medium from being wound unevenly when a long medium is wound around a winding roller and a printing apparatus that includes the winding apparatus are provided. A winding apparatus includes a winding section that has a winding roller rotatably supported therein and winds a long medium around the winding roller. The winding section also has a pressing portion that presses the medium toward the winding roller.

A sheet supporting apparatus includes a sheet discharge unit, a conveyance unit, a stacking unit, and a supporting unit. The sheet discharge unit conveys a sheet to discharge the sheet. The conveyance unit including a gripper member engaging with a leading edge of the sheet that has been discharged from the sheet discharge unit. The conveyance unit conveys the sheet engaged with the gripper member by moving the gripper member. The stacking unit is on which the sheet that has been conveyed by the conveyance unit is stacked. The supporting unit supports the sheet conveyed by the sheet discharge unit toward the gripper member by abutting against an undersurface of the sheet. The supporting unit is provided at a position where at least part of the supporting unit overlaps the gripper member in a sheet width direction perpendicular to a sheet discharge direction when viewed in the sheet discharge direction.

A printing machine and method for using the same, for printing seamless fabrics provided in tube form, the printing machine comprising a drum on which a tube of the fabric is fitted; and a print head placed in proximity to said drum to print onto the tube fabric as it rotates on the drum. The print head moves axially on the drum to advance the printing.

In an ink jet recording device in which a paper supporting part is constituted by a first support and a second support having a comb teeth structure, a region where paper is supported by only the first support is defined as a first region, a region where the paper is supported by only the second support is defined as a second region, and a region where the paper is supported by the first support and the second support is defined as a third region. Charts including a plurality of grayscales for the respective regions are drawn. The respective drawn charts are read by an image reader. Correction values of density unevenness are obtained for the respective regions on the basis of the reading results. Density data of an image are corrected for the respective regions on the basis of the correction values of the density unevenness for the respective regions.

A method for printing on sheets in an inkjet process using nozzles includes transporting the sheets on a drum. When the nozzles are actuated by a computer, banding defects are compensated for and the computer factors in or takes into consideration thermal properties of the drum as it actuates the nozzles.

A digital printing machine includes at least one print head for inkjet printing, a drum for transporting printing material, and a spittoon for collecting ink coming from the print head. The drum has a mounting for the spittoon. The spittoon includes a support and an absorber fixed thereto. The absorber is quasi flush with the outer circumference of the drum, and the support and the absorber together form a replaceable disposable unit. A spittoon for use in a digital printing machine is also provided.

A method for controlling a printing machine including a revolving transport device for transporting a substrate, includes continuously scanning the surface of the transport device using a detection device, evaluating measured results to find defects on the surface, saving the defects in a data memory and outputting information on the defects. The method advantageously provides an operator with targeted information on defect type, defect location and defect frequency and thus allows a targeted elimination of defects, which may increase the overall productivity of the printing machine.