Wiper roll to cause friction on a print medium
First Claim
Patent Images
1. A method including:
- moving a print medium in a forward direction from a rotating media roll, from which the print medium is being output;
causing friction on the print medium using a rotating wiper roll contacting the surface of the print medium at a rotation speed;
determining a radius of the media roll; and
adapting, based on the determined radius of the media roll, the rotation speed of the wiper roll or a back tension exerted by the media roll on the print medium so as to control the friction caused by the rotating wiper roll on the print medium.
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Accused Products
Abstract
A device (2) includes a media roll (4) to output a print medium (M) in a forward direction (26) and a wiper roll (6) to contact the surface of the print medium (M) at a rotation speed to cause friction on the print medium (M). The device (2) may determine a radius (r2) of the media roll (4) outputting the print medium (M) and, based on this radius (r2), adapt parameters such as the rotation speed of the wiper roll and a back tension (T2) exerted by the media roll (4) on the print medium (M) so as to control the friction caused by the wiper roll (6) on the print medium (M).
10 Citations
14 Claims
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1. A method including:
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moving a print medium in a forward direction from a rotating media roll, from which the print medium is being output; causing friction on the print medium using a rotating wiper roll contacting the surface of the print medium at a rotation speed; determining a radius of the media roll; and adapting, based on the determined radius of the media roll, the rotation speed of the wiper roll or a back tension exerted by the media roll on the print medium so as to control the friction caused by the rotating wiper roll on the print medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method including:
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conveying a print medium in a forward direction from a rotating media roll; applying wiper roll onto the print medium while the wiper roll is rotating at a rotation speed, to cause friction on the print medium; and adapting, based on the radius of the media roll, the rotation speed of the wiper roll or a back tension exerted by the media roll on the print medium to limit a decrease of the friction on the print medium due to a reduction of the radius of the media roll while the print medium is being supplied.
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13. Device including:
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a media roll to output, by rotation, a print medium in a forward direction to a printing area; a wiper roll to contact the surface of the print medium at a rotation speed to cause, by rotating, friction on the print medium; a radius determining module to determine a radius of the media roll outputting the print medium; and a setting module to adapt, based on the determined radius of the media roll, the rotation speed of the wiper roll or a back tension exerted by the media roll on the print medium so as to control the friction caused by the rotating wiper roll on the print medium. - View Dependent Claims (14)
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Specification