There are provided an image reading device and a printing apparatus that can reduce an influence of the shadows of suction holes. Suction holes, which are used to suck a sheet, are arranged on the peripheral surface of a drum that transports the sheet. The suction holes are arranged in grooves that are formed along a direction orthogonal to a transport direction. Accordingly, since an influence of the shadows of the suction holes can be reduced even in a case in which density unevenness is inspected on the basis of a read image, the false detection of density unevenness can be prevented.

A sheet-guiding drum in a sheet-processing machine, comprises a gripper system, a gripper shaft, and a gripper tube. A method for producing a gripper system is also disclosed. The sheet-guiding drum further improves the sheet transport process, in particular the turning process, in sheet-processing machines. The problem addressed by the invention is in particular the provision of a low-wear rolling-element bearing that preferably eliminates the aforementioned disadvantages and, in particular, meets all further boundary conditions. This problem is solved in that the gripper tube is assembled from tube segments.

A sheet-guiding drum in a sheet-processing machine, comprises a gripper system, a gripper shaft, and a gripper tube. A method for producing a gripper system is also disclosed. The sheet-guiding drum further improves the sheet transport process, in particular the turning process, in sheet-processing machines. The problem addressed by the invention is in particular the provision of a low-wear rolling-element bearing that preferably eliminates the aforementioned disadvantages and, in particular, meets all further boundary conditions. This problem is solved in that the gripper tube is assembled from tube segments.

A rotary drum apparatus comprises a drum that is rotatable about an axis of rotation. The apparatus comprises a first set of first shell segments having a first number of first shell segments. Each first shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the first shell segments combine to form a continuous first outer circumferential surface defining a maximum radial distance from the axis of rotation. The apparatus comprises a second set of second shell segments having a second number of second shell segments. Each second shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the second shell segments combine to form a continuous second outer circumferential surface located within 10% of the maximum radial distance. The first number of first shell segments is greater than the second number of second shell segments.

A rotary drum apparatus comprises a drum that is rotatable about an axis of rotation. The apparatus comprises a first set of first shell segments having a first number of first shell segments. Each first shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the first shell segments combine to form a continuous first outer circumferential surface defining a maximum radial distance from the axis of rotation. The apparatus comprises a second set of second shell segments having a second number of second shell segments. Each second shell segment is releasably connectable with the drum and has an outer surface. The outer surfaces of the second shell segments combine to form a continuous second outer circumferential surface located within 10% of the maximum radial distance. The first number of first shell segments is greater than the second number of second shell segments.

Systems and methods utilizing stationary and/or moveable cutting components provide limited interference with web processing operations, such as pad spin and pitch alteration. Heat, laser, fluid, or mechanical cutting operations may be used, including respectively, a heated element (e.g., wire, ribbon, bar, or embossing or perforating element) that may be triggered inductively, water or steam jets, or improved knife/anvil cooperation.

The invention relates to a handling device for presenting a flat piece to at least a first and a second treatment device in particular for presenting a plastic card substrate to a printer device and a flipping device. The handling device comprises an elongated backbone element, wherein the backbone element is rotatable along a longitudinal axis and has at least a first and a second angular position; a holding element configured to hold the flat piece relative to the backbone element; and a control unit, configured to control the angular position of the backbone element; wherein, when the backbone element is at the first angular position, the flat piece is at a first treatment position for the first treatment device, and when the backbone element is at the second angular position, the flat piece is at a second treatment position for the second treatment device.

There are provided an image reading device and a printing apparatus that can reduce an influence of the shadows of suction holes. Suction holes, which are used to suck a sheet, are arranged on the peripheral surface of a drum that transports the sheet. The suction holes are arranged in grooves that are formed along a direction orthogonal to a transport direction. Accordingly, since an influence of the shadows of the suction holes can be reduced even in a case in which density unevenness is inspected on the basis of a read image, the false detection of density unevenness can be prevented.

A laminating device is adapted to laminate a plurality of sheet members on a lamination stage and includes: a plurality of laminating heads2 that each has a curved holding surface; a drum section in which the plurality of laminating heads are arranged, the drum section holding each laminating head, and rotation of the drum section causing each laminating head to advance to a laminating position facing a planar lamination surface; and a rolling motion mechanism that rolls the holding surface on the lamination surface so that a delivery point of the sheet member moves from a rear end to a front end of the sheet member while each laminating head is caused to move by the drum section.

A laminating device is adapted to laminate a plurality of sheet members on a lamination stage and includes: a plurality of laminating heads2 that each has a curved holding surface; a drum section in which the plurality of laminating heads are arranged, the drum section holding each laminating head, and rotation of the drum section causing each laminating head to advance to a laminating position facing a planar lamination surface; and a rolling motion mechanism that rolls the holding surface on the lamination surface so that a delivery point of the sheet member moves from a rear end to a front end of the sheet member while each laminating head is caused to move by the drum section.