A textile feed for a stepped operation digital textile printer, comprises a textile feeding mechanism, and a tension storage mechanism. The textile feeding mechanism feeds the textile in a forward direction onto the printer, but is at the same time mechanically connected to a tension storage mechanism which is tensioned by the forward feeding. At the end of the feed step, the tension storage mechanism releases respectively stored tension to cause the feed mechanism to briefly reverse feed, thereby to pull the textile taut and take up any slack caused by the feeding step. The textile is thus kept taut, to allow effective digital printing by the printer.

A web processing apparatus comprising a web transport station and a web processing station. The web transport station comprises a web tension control assembly, which comprises a first tensioning device and a second tensioning device. Said first tensioning device is movably arranged for controlling tension of a first web. Said second tensioning device is movably arranged for controlling tension of a second web independently of the tension of the first web. Said first tensioning device comprises a first interior space and the first tensioning device is arranged with respect to the second tensioning device such that the first interior space at least partly accommodates the second tensioning device. The web processing apparatus allows for accurately controlling tension of the first and second webs simultaneously and independently of one another in a tandem mode, while maintaining the possibility for controlling tension of a single web in a single mode.

A device for hot-foil stamping on printing materials includes a heated stamping cylinder, a counterpressure cylinder, and a device for providing stamping foil. The device for providing stamping foil guides the stamping foil between the stamping cylinder and the counterpressure cylinder in a direction tangential to the cylinders. The device for providing stamping foil has an adjustable guide element that is disposed downstream of the stamping cylinder and of the counterpressure cylinder for guiding the stamping foil. The hot-foil stamping device advantageously allows the stamping quality to be optimized.

Medium handling apparatuses and methods of media handling, both for use in printing devices, are disclosed herein. An example of a medium handling apparatus includes a first transport roller to convey a medium and a first drive mechanism to rotate the first transport roller at a first rate. This example of the medium handling apparatus additionally includes a second transport roller to convey the medium and a second drive mechanism to rotate the second transport roller at a second rate. This example of the medium handling apparatus further includes a coupling assembly to disengage the second transport roller from the second drive mechanism to allow the medium to rotate the second transport roller at the first rate.

Provided is an apparatus with automatic belt tensioning. A winding seat includes a first gear and a winding portion fixed at the first gear. A belt is windable around the winding portion, and the first elastic element is connected with the winding portion thus to wind the belt around the winding portion. A rotation preventing element includes a protrusion. When the protrusion retains the first gear, the winding portion is locked to prevent the belt being wound. When the belt is pulled, it drives the protrusion to be separated from the first gear and drives the winding portion to rotate. When the belt is released and the winding speed of the belt is decreased to a certain degree, the protrusion retains the first gear to prevent the belt being wound.

An electrode sheet rewinding apparatus for rewinding an electrode sheet includes a bobbin having a PET film wound therearound, a bobbin holder configured to hold the bobbin, a base plate located under the bobbin holder and configured to support the bobbin holder, a roller type touch roll configured to press an electrode sheet rewound around the bobbin above the bobbin to prevent meandering of the electrode sheet, a vertical plate located at one side of the base plate, the touch roll attached to the vertical plate, and an idle roller unit configured to form a tangential line to the electrode sheet rewound around the bobbin together with the touch roll. The idle roller unit includes an idle roller configured to maintain tension of the electrode sheet and to form a tangential line to the electrode sheet and two driving mechanisms configured to change the position of the idle roller.

An arrangement for controlling longitudinal forces acting on a web of packaging material being wound from a first reel to a second reel, said arrangement comprising a first roller having a first rotational axis and a second roller having a second rotational axis, wherein the first rotational axis is fixed while the second rotational axis is movable.

In the present invention a web processing apparatus is provided comprising a web transport station and a web processing station. Said web transport station is arranged to transport, in a single mode of the web processing apparatus, a first web in a process direction towards or away from the web processing station, and to transport, in a tandem mode of the web processing apparatus, the first web and a second web in the process direction towards or away from the web processing station.

The web transport station comprises a web tension control assembly, which comprises a first tensioning device and a second tensioning device. Said first tensioning device is movably arranged for controlling tension of a first web. Said second tensioning device is movably arranged for controlling tension of a second web independently of the tension of the first web. Said first tensioning device comprises a first interior space and the first tensioning device is arranged with respect to the second tensioning device such that the first interior space at least partly accommodates the second tensioning device.

Provided is a workpiece conveyance method for conveying a workpiece (1) in a predetermined direction by applying a conveying force (F) to the workpiece (1) while supporting the workpiece (1) through use of free rollers (11), and the workpiece conveyance method includes: applying flows of a fluid to the free rollers (11) to apply a rotation auxiliary force (f) to the free rollers (11) in a rotation direction of the free rollers (11) during conveyance of the workpiece (1).

Manufacturing decorative panels by using a web-fed inkjet printer. During the feeding of the to-be-printed substrate, the tension of the substrate is controlled by a dancer unit (720) which includes a dancer roll (200), having a connector (120) on both side ends of said roll, and wherein both connectors (120) are connected to a pair of parallel guiders (110) for floating said roll along a floating path (210); and wherein the step of controlling comprises the step of moving one guider (110) of said pair of guiders (110) parallel to said floating path (210) whereby the dancer roll (200) is tilted.