A roll holder is inserted with a hollow tube of one of a first roll having a first inner diameter and a second roll having a second inner diameter greater than the first inner diameter. The roll holder includes a holder and a cam assembly that are supported by a support shaft and movable in an axial direction of the support shaft. The cam assembly includes an abutment and a cam. The abutment contacts a lateral end of the second roll in the axial direction of the support shaft. The cam presses against one of a first presser and a second presser of the holder in a radial direction of the support shaft to cause the one of the first presser and the second presser to press against and hold an inner circumferential face of the hollow tube of the one of the first roll and the second roll.

A medium feeding unit that is configure to be mounted to an image forming apparatus provided with an image forming unit and feeds a medium to the image forming unit includes a medium introducing part that introduces the medium to the image forming unit and a medium holding part that holds the medium at a feeding position from which the medium is fed to the image forming unit. The medium holding part is configured to be positioned at one of at least two different feeding positions relative to the medium introducing part.

A tape holder allows a person to hold and dispense masking tape easily when preparing for painting or performing other tape related activities. The tape holder may include a first portion that is capable of sliding into or out of a person's pants pocket while a second portion extends out of the pocket and holds one or more rolls of tape. Embodiments of the tape holder are economically made from a single length of bent rod. The tape holder allows the user to easily and quickly remove and replace a roll of masking tape.

A tape dispenser includes a plastic injection molded frame with a resiliently flexible finger that helps prevent the free end of a roll of tape from accidentally retracting, falling back, and frustratingly sticking to the coiled portion of the tape. To avoid this problem, a distal end of the finger presses against the inner diameter of a cardboard or plastic spool about which the tape is wrapped. Friction between the finger's distal end and the spool's inner diameter inhibits reverse rotation of the spool. To avoid breaking the finger while forcefully loading the roll of tape into the dispenser during assembly, a lateral backstop surface on the dispenser prevents the spool from bending the finger too far in a laterally outward direction. To avoid breaking the finger during subsequent rough use, another backstop surface prevents the spool from bending the finger too far in a radially downward direction.

A rolled material dispensing apparatus including a housing, a frame, first and second retention structure, first and second ball bearings, first and second biasing components, and mounting structure. Sides of the frame form an open-front dispensing chamber and include first and second apertures for at least partially receiving the ball bearings therethrough. The retention structure retain the ball bearings and biasing components therein. The ball bearings may be urged out of the way of the roll of material when the roll is loaded into the apparatus. The biasing components urge the ball bearings at least partially through the apertures into ends of the roll when the roll is in a loaded position for retaining the roll in the dispensing chamber.

A print media holder device has first and second grip members. Permanent magnets are attached to the first and second grip members. An electromagnet is disposed between the first and second grip members, where when the electromagnet is selectively energized the permanent magnets attached to the first and second grip members are repelled in a manner that increases the outer dimension of the print media holder device to grip a media core.

A winding core holder includes a holder main body, a lifter to raise and lower the holder main body, and a roller movably held relative to the holder main body, enabling the winding core to be placed and moved in the winding core axial direction. The roller includes a high-release surface with a higher release property than a surface of the holder main body.

A printing apparatus includes a stacking portion on which a print medium printed by a printing unit configured to perform printing is stacked, a discharge unit configured to discharge the print medium printed by the printing unit to the stacking portion, a passage forming portion arranged facing the stacking portion and configured to form a discharge passage of the print medium together with the stacking portion, and an outlet port located at a downstream end of the stacking portion and a downstream end of the passage forming portion in a conveying direction of the print medium. The passage forming portion includes an opening/closing portion which is displaceable between a closed position for forming the discharge passage and an open position for opening access to the stacking portion.

A tray includes: a first accommodating part configured to accommodate a rolled first sheet medium; and a second accommodating part disposed side by side with respect to the first accommodating part in a first direction and having a support surface configured to support a second sheet medium. The second accommodating part is configured to accommodate a plurality of sheets of the second sheet medium in a stacked state. The second accommodating part is configured to be either in a first state where a length of the support surface in the first direction is a first length, or in a second state where the length of the support surface in the first direction is a second length shorter than the first length.

A print media holder device has first and second grip members. Permanent magnets are attached to the first and second grip members. An electromagnet is disposed between the first and second grip members, where when the electromagnet is selectively energized the permanent magnets attached to the first and second grip members are repelled in a manner that increases the outer dimension of the print media holder device to grip a media core.