The medium winding device includes a winding shaft, a drive unit for winding the medium around the winding member, a rotating member rotatably disposed, a tension applying member which moves as the drive unit is driven or stopped, a position detecting unit for detecting the position of the tension applying member, an output changing unit, a control unit that determines whether slippage occurs between the winding shaft and the winding member based on the position of the tension applying member and the result of output change by a rotation of the winding shaft. Further, the drive unit includes a torque limiter.

A label winding device is for receiving a medium including a label liner and a label member that is removably attached to the label liner and has at least one label portion and a waste portion, separating the waste portion from the label liner at a waste separation portion, and winding the at least one label portion with the label liner. The label winding device includes: a waste winder for winding the separated waste portion; a label winder for winding the at least one label portion with the label liner without the separated waste portion; a waste guide for guiding the separated waste portion to the waste winder; a support for rotatably supporting the waste guide; a sensor for detecting a rotational speed of the waste guide; and a waste break detector for detecting break of the waste portion on a basis of the detection by the sensor.

A medium winding device for winding a continuous medium ejected from an image forming device includes a winding member that is rotatably arranged around which the medium is wound, an actuator that rotates the winding member to wind the medium on the winding member in a rolled state, a tension generation member that applies a tension to the medium being carried to the winding member, a roll diameter obtaining unit that obtains a roll diameter of the medium in the rolled state, wherein the roll diameter changes depending on an amount of the medium wound on the winding member, and a tension adjustment unit that adjusts the tension of the medium applied by the tension generation member depending on the roll diameter obtained by the roll diameter obtaining unit.

A printing apparatus includes a transport unit which includes a transport roller pair which transports a medium in a transport direction, a printing unit which prints onto the medium, a winding unit which winds the printed medium, and a tension application unit which applies a tension to the medium at a position between the transport roller pair and the winding unit. The tension application unit includes a pair of arms which are capable of rotating. A tension bar is supported on one end of the arms and comes into contact with the medium. The bar is rotated from an upper limit position to a lower limit position by transportation of the transport unit being performed two or more times.

A control system for controlling operation of main and secondary drive units in a web winder system to provide tension control of a continuous material web is disclosed. The control system causes the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web. The control system receives inputs from tension and speed detectors in the web winder system that detect a tension and speed of the continuous material web and causes the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode so as to control a tension in the web material, with the control system causing the secondary drive unit to operate according to a torque regulated closed-loop tension control mode and integrate a speed feedback loop into the torque regulated closed-loop tension control mode so as to introduce active damping into the tension control.

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.

The present invention relates to a method where rolling a length of compressed flexible material into a roll use a flexible roll-up belt moving along a belt pathway, said pathway defined by a number of rollers, wherein at least one of said rollers is active where its rotation is driven by a drive motor and drives the belt along said belt pathway, the roll-up belt can be tightened or loosened along said belt pathway by changing the position of at least one moveable roller and thereby changing the length of the pathway, wherein said method comprises feeding said compressed flexible material into a meeting loop cavity shaped by a segment of said roll-up belt along said roll-up belt pathway, whereby material follows the inner surface of the loop and the rolling of the flexible material is initiated, gradually increasing the length of the segment of said roll-up belt in said meeting loop cavity to ensure that that the roll-up belt segment in said meeting loop cavity gradually and continuously follows the increasing size of the roll and supports the outer contour of the roll, wherein said gradual increase of the segment comprises the steps of gradually loosening the roll-up belt by changing the position of said at least one moveable roller and simultaneously controlling the rotation speed of said at least one active roller to control the length of said belt segment in said meeting loop cavity.

Thereby, an automatic rolling of flexible material is obtained, which adaptably expands a meeting loop cavity to ensure that the rolling is initiated in a controlled manner, and furthermore, that one apparatus performing the method according to the present invention may be used to roll flexible material of various dimensions and characteristics.

The present invention relates to a method where rolling a length of compressed flexible material into a roll use a flexible roll-up belt moving along a belt pathway, said pathway defined by a number of rollers, wherein at least one of said rollers is active where its rotation is driven by a drive motor and drives the belt along said belt pathway, the roll-up belt can be tightened or loosened along said belt pathway by changing the position of at least one moveable roller and thereby changing the length of the pathway, wherein said method comprises feeding said compressed flexible material into a meeting loop cavity shaped by a segment of said roll-up belt along said roll-up belt pathway, whereby material follows the inner surface of the loop and the rolling of the flexible material is initiated, gradually increasing the length of the segment of said roll-up belt in said meeting loop cavity to ensure that that the roll-up belt segment in said meeting loop cavity gradually and continuously follows the increasing size of the roll and supports the outer contour of the roll, wherein said gradual increase of the segment comprises the steps of gradually loosening the roll-up belt by changing the position of said at least one moveable roller and simultaneously controlling the rotation speed of said at least one active roller to control the length of said belt segment in said meeting loop cavity.

Thereby, an automatic rolling of flexible material is obtained, which adaptably expands a meeting loop cavity to ensure that the rolling is initiated in a controlled manner, and furthermore, that one apparatus performing the method according to the present invention may be used to roll flexible material of various dimensions and characteristics.

The present invention relates to a method and a device for producing a roll (18) made of a material web (5) of flexible material which is guided via a contact roller (19) of a winder and is wound in the said winder to form a roll (18), wherein the contact roller (19) maintains contact with the roll (18) during winding and the wrap angle () of the material web (5) passing over the contact roller (19), as the former is progressively wound, is maintained throughout at a variable reference value predetermined for each winding. In this way the wrap angle () for the winding can be adapted to the respective composition of the material web (5), which improves the quality of the winding.

The present invention relates to a method and a device for producing a roll (18) made of a material web (5) of flexible material which is guided via a contact roller (19) of a winder and is wound in the said winder to form a roll (18), wherein the contact roller (19) maintains contact with the roll (18) during winding and the wrap angle () of the material web (5) passing over the contact roller (19), as the former is progressively wound, is maintained throughout at a variable reference value predetermined for each winding. In this way the wrap angle () for the winding can be adapted to the respective composition of the material web (5), which improves the quality of the winding.