A transport device provided in a printing apparatus includes a transport mechanism as an example of a first transport unit and a winding unit that is disposed on a downstream side of the transport mechanism in a transport direction. The transport device includes a tensile force applying unit that has a tension bar as an example of a tensile force applying member that is biased toward a medium between the transport mechanism and the winding unit and applies tensile force to the medium. Furthermore, the transport device includes a control unit that independently and intermittently drives the transport mechanism and the winding unit. The control unit controls transport start timing of the winding unit to take place later than transport start timing of the transport mechanism and causes the transport mechanism and the winding unit to transport the medium in parallel.

A printing apparatus includes a transport unit configured to transport a medium, a winding unit disposed downstream, in a transport direction, of the transport unit, the winding unit being configured to wind the medium, and a tension applying unit including a rod member biased toward the medium between the transport unit and the winding unit, the rod member being for applying a tension to the medium. The tension applying unit is configured so that the rod member moves along a predetermined direction as at least one of the transport unit and the winding unit is driven to transport the medium. An upper limit position of a movement of the tension bar along the predetermined axis is changed according to a winding mode of the winding unit.

A system (300) is provided having a printer (4) to print printing liquid onto a web (6) of media (8). The system (300) has a winding roller (10) on which to roll the web (6) of media (8) after printing. A tensioner (12) to vary the tension in a portion (14) of the web (6) of media (8) is also provided. The portion (14) is a portion of web which is being rolled onto the winding roller (10). Also provided is controller (16) to control the tensioner (12) to vary the tension based on the time taken for the printed printing liquid on the web (6) of media (8) to dry.

A winding device (10) for winding a web (92) onto a reel (90) has a drive shaft (20), a gear (30), a clutch shaft (63), an energy storage means (50), a clutch (60) and an output shaft (80). The gear (30) is configured, as a positive-engagement gear, to transmit a rotary movement of the drive shaft (20) to a first clutch shaft element (61) assigned to the clutch shaft (63). The clutch shaft (63) is connected via the clutch (60) with the output shaft (80) in order, selectively, to enable or prevent a transmission of torque between the clutch shaft (63) and the output shaft (80). The gear (30) has, without the energy storage means (50) having effect, a first predetermined transmission ratio (i_0) between the drive shaft (20) and the clutch shaft (63), and the energy storage means (50) is configured to store and release rotational energy and to vary the transmission ratio.

A winding device (10) for winding a web (92) onto a reel (90) has a drive shaft (20), a gear (30), a clutch shaft (63), an energy storage means (50), a clutch (60) and an output shaft (80). The gear (30) is configured, as a positive-engagement gear, to transmit a rotary movement of the drive shaft (20) to a first clutch shaft element (61) assigned to the clutch shaft (63). The clutch shaft (63) is connected via the clutch (60) with the output shaft (80) in order, selectively, to enable or prevent a transmission of torque between the clutch shaft (63) and the output shaft (80). The gear (30) has, without the energy storage means (50) having effect, a first predetermined transmission ratio (i_0) between the drive shaft (20) and the clutch shaft (63), and the energy storage means (50) is configured to store and release rotational energy and to vary the transmission ratio.

A machine for producing coils of prestretched extendible film has a prestretching unit (10) for prestretching the film (F) and a winding unit (100) for winding the film in a coil provided with a series of rollers around which the advancing film winds partially; the winding unit comprises a winding roller (104) in pressing contact against the coil (R) of the prestretched film in winding progress; to obtain coils of constant diameter and high winding quality the final contact position is varied of the winding roller (104) against the coil (R) according to the length of the wound film and according to the required diameter of coil.

A machine for producing coils of prestretched extendible film has a prestretching unit (10) for prestretching the film (F) and a winding unit (100) for winding the film in a coil provided with a series of rollers around which the advancing film winds partially; the winding unit comprises a winding roller (104) in pressing contact against the coil (R) of the prestretched film in winding progress; to obtain coils of constant diameter and high winding quality the final contact position is varied of the winding roller (104) against the coil (R) according to the length of the wound film and according to the required diameter of coil.

A medium winding device for winding a medium includes: a rotatable winding member; a driver configured to rotate the winding member to wind the medium around the winding member into a roll; a rotating friction member rotatably disposed upstream of the winding member in a conveying direction in which the medium is conveyed, the rotating friction member having a high friction member forming an outer surface of the rotating friction member, and being configured to apply tension to the medium when the medium is wound around the winding member; and a tension adjusting member connected to the rotating friction member and configured to maintain the tension applied to the medium constant.

The machine (1; 100) comprises a winding station (3; 101), adapted to receive secondary winding cores (T) coaxial with, and adjacent to, one another. A cutting device (11; 104) is also provided, with a plurality of blades (13; 105), arranged upstream of the winding station (3; 101) with respect to the feeding direction of the web material (N) and adapted to subdivide the web material into plurality of strips (S1-S5) of web material; The machine has a web material evaluation system and a programmable unit (71) for processing data collected by the web material evaluation system.

Methods and apparatus to form tear-off paperband composites that adhesively attach a paper web to an empty web spool. In some embodiments, the paperband composite is applied in several layers to an empty web spool, each layer suitable for fixedly attaching a paper web to the empty spool. Multiple layers of paperband composite allow for use during multiple turn-up procedures with one layer of paperband composite used per turn-up procedure. In some examples, the paperband composite may be applied to a paper spool tangentially along the spool face and perpendicular to the axis of rotation of the spool. In other examples, the paperband composite may be spirally wrapped around the paper spool.