A pneumatic linear ejector (1) of the type attachable to an arm (101) of a movable arm unwinder (100) for reels (102); the ejector (1) comprising a plurality of segments (2a, 2b, 2c) nested one in the other and slidable over each other, each having a respective seat (3) for the passage and/or accommodation of a chuck (104) configured to grasp a core (106) of a reel (102), the seats (3) are coaxial and define a central axis (A); the first segment (2a) is defined by an annular cylinder (20) attachable to an unwinder (100) and having a base (21) adapted to face the unwinder (100); a closing portion (25) is fixed to the first segment (2a) and closes the seat (3), the closing portion (25) is configured to support the chuck (104).

An installation kit for a pneumatic linear ejector (1) comprising an ejector (1) having a plurality of segments (2a, 2b, 2c) nested one in the other and slidable over each other, the first segment (2a) and the second segment (2b) having each a respective central seat (3) for the passage and/or accommodation of a chuck (104) configured to grasp a core (106) of a reel (102), the seats (3) being coaxial and defining a central axis (A); the first segment (2a) being defined by an annular cylinder (20) attachable to an unwinder (100) and having a base (21) adapted to face the unwinder (100); the annular cylinder (20) has an outer wall (22) having an opening (15), the kit further comprising an adapter (37) having an annular cavity (16) adapted to be connected with a fluid source and to be positioned at the opening (15) for introducing fluid into said annular cylinder (20)

A sheet dispenser system having a roll of sheet material and a housing to receive the roll. The roll of sheet material comprises a first end portion incorporating a key, and the housing comprises a mounting portion arranged to support the first end portion of the roll and a support portion arranged to support a second end of the roll. The mounting portion comprises a tilting member pivotally coupled to the housing to define an operative position, in which the mounting portion and the support portion are aligned to support the roll in the housing, and a loading position, in which the mounting portion and the support portion are unaligned to inhibit support of the roll in the housing. The mounting portion comprises a block arrangement which is movable between a blocked condition, in which movement of the tilting member from the loading position to the operative position is inhibited, and an unblocked condition, in which movement of the tilting member from the loading position to the operative position is permitted. The mounting portion is arranged such that the roll is movable between an engaged condition, in which the key engages the mounting portion, and a disengaged condition, in which the key is disengaged from the mounting portion, such that, when the roll is moved from the disengaged to the engaged condition, the first end portion of the roll moves the block arrangement into the unblocked condition, thereby permitting movement of the tilting member from the loading position to the operative position.

A sheet dispenser system having a roll of sheet material and a housing to receive the roll. The roll of sheet material comprises a first end portion incorporating a key, and the housing comprises a mounting portion arranged to support the first end portion of the roll. The mounting portion comprises a lock arrangement which is movable between a locked condition and a free condition. The lock arrangement comprises a rotatable element configured for rotation about an axis, and a locking element configured for engagement with the rotatable element to inhibit rotation of the rotatable element, such that, when the locking element and the rotatable element are engaged, the lock arrangement occupies the locked condition, and when the locking element and the rotatable element are disengaged, the lock arrangement occupies the free condition. The mounting portion is arranged such that the roll is movable between an engaged condition, in which the key engages the mounting portion, and a disengaged condition, in which the key is disengaged from the mounting portion, such that, when the roll is moved from the disengaged to the engaged condition, the first end portion of the roll moves the lock arrangement into the free condition, thereby permitting rotation of the rotatable element. The locking element and the rotatable element are configured for engagement by relative movement of the locking element and the rotatable element towards each other in a direction along the axis of rotation of the rotatable element.

A recording apparatus comprises a lifting mechanism lifting and lowering a roll-shaped medium, wherein the lifting mechanism includes a lifting unit which lifts and lowers in an apparatus height direction and on which the roll-shaped medium is placed, a position adjustment unit configured to adjust a position of the lifting unit in the apparatus height direction, and a base unit supporting the lifting unit and the position adjustment unit. The base unit includes an insertion portion through which a shaft member supporting the base unit is inserted. The insertion portion includes an inner circumferential portion facing an outer circumferential portion of the shaft member. A plurality of rolling elements is disposed in the inner circumferential portion of the insertion portion, and the plurality of rolling elements protrudes from the inner circumferential portion when viewed from an axial direction in which the shaft member extends.

The unwinder includes a pair of tailstocks adapted to engage and support a reel to be unwound and a peripheral unwinding device adapted to coact with a reel in the unwinding station. There is also provided a shuttle adapted to insert reels into the unwinding station, movable between a loading position of the reel on the shuttle and a position aligned with the pair of tailstocks, to transfer a reel from the shuttle to the tailstocks or vice versa. In use, the peripheral unwinding device is positioned under the reel of web material, so that the force exerted by the peripheral unwinding device on the reel being unwound has a component that is subtracted from the weight force of the reel.

A printer includes: a container configured to contain a roll into which a belt-shaped print medium is wound, the roll being inserted through an opening; a guide configured to guide the roll, the guide being disposed in the container and having a pair of abutting faces that abut on both side faces of the roll; a holding part that is movable between a first position where the holding part protrudes inwardly from the abutting face and a second position where the holding part does not protrude inwardly from the abutting face, the holding part being biased from the second position to the first position and holding the roll rotatably at the first position; and a displacement part configured to be displaced with motion of the holding part. At least a portion of the displacement part is exposed when a user sees the displacement part through the opening, such that the displacement part is recognizably displaced in a different position depending on whether the holding part is at the first position or at the second position.

Provided is a medium supply device including a spindle that supports a medium having a roll shape, a supplying portion that supplies the medium supported by the spindle toward outside, a plurality of support rollers that support the medium in positions between the spindle and the supplying portion, a moving roller that, in a contact position between the support rollers, is capable of coming into contact with a bridging medium extending across the support rollers in a state where a load is applied to the bridging medium and that is capable of moving from the contact position to a non-contact position of non-contact with the bridging medium, and a moving mechanism configured to move the moving roller from the contact position to the non-contact position.

An apparatus for replacing a roll of material with a replacement roll of material comprises a loading station and multiple feed stations downstream of the loading station. Each station comprises two legs and a motorized drive assembly extending between the legs. The drive assembly rotates two sprockets and an endless chain surrounding the sprockets inside each of the legs at a station to raise or lower carriages. A roll support extends between the carriages at each station.

A core chuck system (10) comprising a core chuck (11) and a spindle (12) onto which the core chuck (11) is lockable, which core chuck system (10) comprises a ball locking mechanism, a locking button (15) and a cone connection (C).