A carrier tape holding device is installed in a component supply unit that supplies a component by drawing a carrier tape storing the component from a tape roll body formed by winding the carrier tape in a roll shape. The carrier tape holding device includes a storage portion that stores the tape roll body. The storage portion holds the tape roll body in a state where the component supply unit is able to draw the carrier tape from the tape roll body, and is capable of receiving a tape roll body for replenishment moved from a holder storing the tape roll body for replenishment in a state where the holder is detachably attached.

A carrier tape holding device is installed in a component supply unit that supplies a component by drawing a carrier tape storing the component from a tape roll body formed by winding the carrier tape in a roll shape. The carrier tape holding device includes a storage portion that stores the tape roll body. The storage portion holds the tape roll body in a state where the component supply unit is able to draw the carrier tape from the tape roll body, and is capable of receiving a tape roll body for replenishment moved from a holder storing the tape roll body for replenishment in a state where the holder is detachably attached.

A printing apparatus includes a feed shaft configured to feed a medium in a roll form by supporting and rotating the medium, a conveyance unit including a driving roller, a driven roller and an endless conveyance belt and configured to convey, in a conveyance direction, the medium supported by the conveyance belt by rotating the driving roller forward, a printing head configured to perform printing on the medium supported by the conveyance belt, and an ear portion winding shaft configured to wind up ear portions of the medium separated from the medium supported by the feed shaft.

A printing apparatus includes a feed shaft configured to feed a medium in a roll form by supporting and rotating the medium, a conveyance unit including a driving roller, a driven roller and an endless conveyance belt and configured to convey, in a conveyance direction, the medium supported by the conveyance belt by rotating the driving roller forward, a printing head configured to perform printing on the medium supported by the conveyance belt, and an ear portion winding shaft configured to wind up ear portions of the medium separated from the medium supported by the feed shaft.

A roll accommodation unit includes: a roll support shaft; a pair of side walls; and a pair of roll bearings that are attached to the pair of side walls, recessed portions are formed at upper ends of the pair of side walls, the pair of rolling bearings are attached to the side walls at positions corresponding to bottoms of the recessed portions such that the rolling bearings project upward beyond inclined surfaces of the recessed portions, the roll support shaft includes a support shaft main body, and a pair of small-diameter portions that are provided at both ends of the support shaft main body, and the roll support shaft is supported with the small-diameter portions abutting on outer circumferential surfaces of the pairs of rolling bearings in a state in which the support shaft main body is located at an interval from the recessed portions.

A roll accommodation unit includes: a roll support shaft; a pair of side walls; and a pair of roll bearings that are attached to the pair of side walls, recessed portions are formed at upper ends of the pair of side walls, the pair of rolling bearings are attached to the side walls at positions corresponding to bottoms of the recessed portions such that the rolling bearings project upward beyond inclined surfaces of the recessed portions, the roll support shaft includes a support shaft main body, and a pair of small-diameter portions that are provided at both ends of the support shaft main body, and the roll support shaft is supported with the small-diameter portions abutting on outer circumferential surfaces of the pairs of rolling bearings in a state in which the support shaft main body is located at an interval from the recessed portions.

To provide a spindle supporting a roll body on which a sheet-shaped medium is wound and rotationally driving the roll body. The spindle includes a shaft member to be inserted into the roll body, a gear fixed on a tip side of the shaft member in an axial direction, a spacer member contacting both of the shaft member and the gear, and a coupling member coupling the shaft member to the gear. In the axial direction of the shaft member, a contact area of the spacer member and the gear is larger than a contact area of the shaft member and the spacer member. The gear is coupled to the coupling member in the axial direction and the shaft member is coupled to the coupling member in an intersecting direction intersecting the axial direction.

Disclosed herein is a paper roll support device for a printing apparatus. The paper roll support device includes: first and second paper guides arranged to be opposite to each other, and configured to support a paper roll; a support panel configured to fix the first and second paper guides; first and second transfer rods installed such that first ends thereof are fixed to the first and second paper guides, and configured to be movable in conjunction with each other; a pulley provided to be rotatable coaxially with the pinion gear; a belt installed such that one end thereof is fixed to one side of the outer circumference of the pulley and the other end thereof is fixed to one end of one of the first and second transfer rods, and configured to rotate the pulley; and an elastic member configured to reversely rotate the pulley to its original position.

Disclosed herein is a paper roll support device for a printing apparatus. The paper roll support device includes: first and second paper guides arranged to be opposite to each other, and configured to support a paper roll; a support panel configured to fix the first and second paper guides; first and second transfer rods installed such that first ends thereof are fixed to the first and second paper guides, and configured to be movable in conjunction with each other; a pulley provided to be rotatable coaxially with the pinion gear; a belt installed such that one end thereof is fixed to one side of the outer circumference of the pulley and the other end thereof is fixed to one end of one of the first and second transfer rods, and configured to rotate the pulley; and an elastic member configured to reversely rotate the pulley to its original position.

The present disclosure is in one aspect to a dispenser for rolled sheet materials. The dispenser includes a feed roller that is rotatably mounted to a housing of the dispenser housing, and that is configured to feed a predetermined amount of sheet material from the supply of sheet material through a discharge provided along the housing of the dispenser. The dispenser also has a feed roller drive assembly with a drive motor, and a belt transmission assembly. The belt transmission assembly has a drive belt coupled to the drive motor and to the feed roller such that rotation of the feed roller is driven by operation of the drive motor.