In a medium supply device, a receiving portion includes a support portion configured to rotatably support a spindle, and a drive gear meshing with a driven gear provided at the spindle to rotate the spindle, and a displacement member includes a pivoting shaft configured to pivot between an advanced position where the spindle is covered and a retracted position where the spindle is exposed, an abutting portion abutting the spindle when the spindle is installed at the receiving portion, the abutting portion being configured to cause the displacement member to pivot to the advanced position, an opposing portion abutting, at the advanced position, an outer peripheral surface of the spindle installed at the receiving portion, a cover portion configured to cover the driven gear, and a grounding member contacting the spindle, thereby coupling to a ground potential.

In a medium supply device, a receiving portion includes a support portion configured to rotatably support a spindle, and a drive gear meshing with a driven gear provided at the spindle to rotate the spindle, and a displacement member includes a pivoting shaft configured to pivot between an advanced position where the spindle is covered and a retracted position where the spindle is exposed, an abutting portion abutting the spindle when the spindle is installed at the receiving portion, the abutting portion being configured to cause the displacement member to pivot to the advanced position, an opposing portion abutting, at the advanced position, an outer peripheral surface of the spindle installed at the receiving portion, a cover portion configured to cover the driven gear, and a grounding member contacting the spindle, thereby coupling to a ground potential.

A roll holder is for a label roll of linerless labels wound in a crosswise manner. The roll holder has: a horizontally arranged spindle, which is held by a stand on at least one side, and a rotatable roll mount, which is oriented in parallel with the spindle, and which is mounted on the spindle. The roll mount is mounted on the spindle in a linearly displaceable manner using at least one linear bearing.

A printer provided with a storing space for a paper roll having a core hole in the center includes a paper roll holder having a protrusion adapted to fit into the core hole of the paper roll. The paper roll holder is switchable between a protruded state that the protrusion protrudes into the storing space and a retracted state that the protrusion retracts from the storing space. The printer further includes a stopper adapted to engage with the paper roll holder while the paper roll holder is in the protruded state to prevent the protrusion from turning to a predetermined direction. The paper roll holder moves when pushed by the paper roll that is being set into the storing space. Movement of the paper roll holder releases the engagement with the stopper to allow the protrusion to turn to the predetermined direction.

A printer provided with a storing space for a paper roll having a core hole in the center includes a paper roll holder having a protrusion adapted to fit into the core hole of the paper roll. The paper roll holder is switchable between a protruded state that the protrusion protrudes into the storing space and a retracted state that the protrusion retracts from the storing space. The printer further includes a stopper adapted to engage with the paper roll holder while the paper roll holder is in the protruded state to prevent the protrusion from turning to a predetermined direction. The paper roll holder moves when pushed by the paper roll that is being set into the storing space. Movement of the paper roll holder releases the engagement with the stopper to allow the protrusion to turn to the predetermined direction.

A printing system includes a transport path for transporting a web medium. The transport path includes a slack region wherein the web medium is slack or substantially tension-free. A take-up roller is positioned at a downstream end of the transport path for receiving and winding the web medium. A tensioning device is positioned along the transport path between the slack region and the take-up roller. The tensioning device includes a first surface arranged for exerting a friction force on the web medium moving over the first surface in a direction opposite to a transport direction of the transport path, such that the web medium is tensioned between the tensioning device and the take-up roller. Since the friction force tensions the web being wound onto the take-up roller, the wound media rolls are tightly wound when applying “loose winding.”

A printing system includes a transport path for transporting a web medium. The transport path includes a slack region wherein the web medium is slack or substantially tension-free. A take-up roller is positioned at a downstream end of the transport path for receiving and winding the web medium. A tensioning device is positioned along the transport path between the slack region and the take-up roller. The tensioning device includes a first surface arranged for exerting a friction force on the web medium moving over the first surface in a direction opposite to a transport direction of the transport path, such that the web medium is tensioned between the tensioning device and the take-up roller. Since the friction force tensions the web being wound onto the take-up roller, the wound media rolls are tightly wound when applying “loose winding.”

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 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.

According to one example there is provided an accessory for a printing system. The accessory comprises a cylindrical core on which a web of media may be wound, and a flexible sheet having a first end attached to the core and a second free end opposite the first end having a media connector attached thereto, the media connector to connect a free end of a web of media thereto.