A feed tray configured to accommodate a roll, in which a sheet-shaped medium is rolled in a roll shape, the feed tray includes: a support portion configured to contact an outer peripheral surface of a lower portion of the roll at two support positions with a lower end of the roll being interposed therebetween and to rotatably support the roll; and a path having an inlet disposed between the two support positions and configured to guide the sheet-shaped medium unrolled from the roll. The two support positions are shifted from each other in an upper-lower direction.

A feed tray configured to accommodate a roll, in which a sheet-shaped medium is rolled in a roll shape, the feed tray includes: a support portion configured to contact an outer peripheral surface of a lower portion of the roll at two support positions with a lower end of the roll being interposed therebetween and to rotatably support the roll; and a path having an inlet disposed between the two support positions and configured to guide the sheet-shaped medium unrolled from the roll. The two support positions are shifted from each other in an upper-lower direction.

According to an embodiment, a printer includes a drop portion that catches, in a case where a diameter of a roll of paper stored in a holder becomes small, the roll of paper that falls from the holder. The printer further includes a plurality of support rollers that are arranged so as to sandwich an inlet of the drop portion and rotatably support the roll of paper PR stored in the holder. At least one of the plurality of support rollers is a short-width roller whose width in an axial direction of a shaft is shorter than a paper width of the roll of paper PR, and a void is provided at a non-shaft arrangement part provided at an extension portion of the short-width roller in the axial direction.

According to an embodiment, a printer includes a drop portion that catches, in a case where a diameter of a roll of paper stored in a holder becomes small, the roll of paper that falls from the holder. The printer further includes a plurality of support rollers that are arranged so as to sandwich an inlet of the drop portion and rotatably support the roll of paper PR stored in the holder. At least one of the plurality of support rollers is a short-width roller whose width in an axial direction of a shaft is shorter than a paper width of the roll of paper PR, and a void is provided at a non-shaft arrangement part provided at an extension portion of the short-width roller in the axial direction.

The present application relates to rolled good feeding device and method. Material feeding devices and methods are provided for conveying material from material rolls. The material roll may be adjusted in the longitudinal direction during the feeding process by a rectifying frame to aid in maintaining alignment during the unrolling. Tension of the unrolled material may be monitored and unrolling speeds of the feeding device can be adjusted to maintain tension of the material within a range for that material. Aspects also contemplate elements to feed multiple rolled materials simultaneously for subsequent processing in combination as layered materials.

The present application relates to rolled good feeding device and method. Material feeding devices and methods are provided for conveying material from material rolls. The material roll may be adjusted in the longitudinal direction during the feeding process by a rectifying frame to aid in maintaining alignment during the unrolling. Tension of the unrolled material may be monitored and unrolling speeds of the feeding device can be adjusted to maintain tension of the material within a range for that material. Aspects also contemplate elements to feed multiple rolled materials simultaneously for subsequent processing in combination as layered materials.

A roll medium is accommodated in a medium cassette. The roll medium has a configuration where a continuous medium is rolled in a roll shape. The roll medium rotates in a direction that the roll medium is unrolled as the continuous medium unrolled from the roll medium is conveyed in a conveying direction away from the roll medium. The medium case includes a supporter which rotatably supports the roll medium in contact with an outer peripheral surface of a lower part of the roll medium in at least one support position on each of both sides between which a lower end of the roll medium is sandwiched, and a passage through which the continuous medium unrolled from the roll medium passes. The passage is formed below at least the support position located on a most downstream side with respect to the conveying direction.

A roll sheet with a continuous sheet wound in a roll form is rotated in a forward direction to supply the sheet to a printing unit. A sensor whose output is changed in accordance with a distance between the sensor and the sheet is used. A rotation direction of the roll sheet is switched from an opposite direction to the forward direction on the basis of the output of the sensor during rotation of the roll sheet in the opposite direction.

A roll sheet with a continuous sheet wound in a roll form is rotated in a forward direction to supply the sheet to a printing unit. A sensor whose output is changed in accordance with a distance between the sensor and the sheet is used. A rotation direction of the roll sheet is switched from an opposite direction to the forward direction on the basis of the output of the sensor during rotation of the roll sheet in the opposite direction.

A feeding unit for feeding a plastic film in packaging machines for wrapping paper rolls, including: a unit for unwinding the film from a reel; a cutting device adapted to cut the film transversely; a transfer device including, on the right and on the left side of the feeding unit, drive belts configured for engaging the upper and lower faces of the film; and a positioning device including, on the right and on the left side of the unit, a predetermined number of drive belts configured for engaging the upper and lower faces of the film. On each side of the feeding unit, the transfer device comprises two pairs of belts. On each side of the feeding unit, the positioning device comprises a third pair of belts. The three pairs of belts are actuated by independent actuators.