Medium winding device and printing system
AssigneeOki Data Corporation
InventorToshiyuki Wada
Life of this patent
Estimating the term…
Abstract
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.
Claims16
A medium winding device, comprising:
- a winding member that winds a medium in a roll and is detachably disposed with respect to a winding shaft;
- a drive unit that gives a rotation drive force to the winding shaft, and that includes
- a winding motor, which generates the rotation drive force, and
- a drive transmission unit including a torque limiter that idles when torque equal to or greater than a limit torque is applied to the winding shaft from the winding motor;
- a tension applying member that is disposed so as to be movable along a guide on the upstream side of the winding member in a conveyance direction of the medium, moves from a first position to a second position along the guide while being in contact with the medium to be conveyed, and provides tension to the medium to be conveyed wherein tension stretching the medium at the second position is greater than the tension at the first position;
- a position detecting unit that detects a position of the tension applying member;
- a rotation detecting unit that detects a rotation of the winding shaft;
- and
- a control unit that notifies an operator that an abnormality has occurred when the position detecting unit detects that the tension applying member is at the second position (Sc ON) and the rotation detecting unit detects that the winding shaft to which the rotation drive force of the winding motor is transmitted by the torque limiter is rotating.
A printing system comprising a printer and a medium winding device for winding up a medium discharged from a discharge port of the printer, wherein
- the medium winding device comprises:
- a winding member which winds the medium in a roll is detachably disposed with respect to a winding shaft;
- a drive unit that gives a rotation drive to the winding shaft, and that includes a winding motor and a drive transmission unit including a torque limiter that idles when torque equal to or greater than a limit torque is applied;
- a tension applying member that is disposed so as to be movable along a guide on the upstream side of the winding member in a conveyance direction of the medium, moves from a first position to a second position along the guide while being in contact with the medium to be conveyed, provides tension to the medium to be conveyed;
- a position detecting unit that detects a position of the tension applying member;
- a rotation detecting unit that detects a rotation of the winding shaft;
- and
- a control unit that notifies an operator that an abnormality has occurred when the position detecting unit detects that the tension applying member is at the second position and the rotation detecting unit detects that the winding shaft to which a rotation drive force of the winding motor is transmitted by the torque limiter is rotating.
A medium winding device, comprising:
- a winding member which winds the medium in a roll is detachably disposed with respect to a winding shaft;
- a winding motor;
- a drive transmission unit that is connected with the winding shaft and gives a rotation drive force from the winding motor to the winding shaft;
- and
- a tension applying member that is disposed so as to be movable along a guide on the upstream side of the winding member in a conveyance direction of the medium, moves from a first position to a second position along the guide while being in contact with the medium to be conveyed, and provides tension to the medium to be conveyed, wherein
- the drive transmission unit includes a torque limiter that limits the rotation drive force from the winding motor, and
- the winding shaft does not rotate when the torque limiter idles.
Dependencies are inferred from the claim text.