A tape feeder (part feeding device) includes a main body including a transporting passage for guiding a part feeding tape to a part removing position, a conveyor for positioning a storage of the part feeding tape which is inserted to the transporting passage to the part removing position, and a part detector for detecting the part stored in the storage in the transporting passage at the upstream side of the part removing position. The transporting passage includes a travelling surface for supporting the part feeding tape from underneath, a pair of side guides for guiding two side surfaces of the part feeding tape, and a squeezed portion in which a distance between the pair of side guides is gradually reduced from the upstream side of the part detector toward a part detecting position of the part detector.

A printing apparatus includes a transport unit which includes a transport roller pair which transports a medium in a transport direction, a printing unit which prints onto the medium, a winding unit which winds the printed medium, and a tension application unit which applies a tension to the medium at a position between the transport roller pair and the winding unit. The tension application unit includes a pair of arms which are capable of rotating. A tension bar is supported on one end of the arms and comes into contact with the medium. The bar is rotated from an upper limit position to a lower limit position by transportation of the transport unit being performed two or more times.

A printer includes a printing unit that performs printing on a printing medium; a winding unit that winds the printing medium on which the printing is performed by the printing unit; and a frame unit which is positioned between the printing unit and the winding unit on a feeding path of the printing medium, in which in a case where the printing medium is not wound by the winding unit, a receiving member for receiving the printing medium is detachably mounted to the frame unit, and in a case where the printing medium is wound by the winding unit, the receiving member is detached such that the frame unit comes in contact with the printing medium.

A liquid ejecting apparatus includes an ejecting unit that is capable of ejecting a liquid; and a tension adjusting unit that is rotatable about a rotational shaft and that is capable of applying a tension to a medium by coming into contact with the medium onto which the liquid is ejected. The tension adjusting unit is capable of applying the tension to the medium at a balancing position at which the tension adjusting unit is balanced by a weight of the tension adjusting unit.

A liquid ejecting apparatus includes an ejecting unit that is capable of ejecting a liquid; and a tension adjusting unit that is rotatable about a rotational shaft and that is capable of applying a tension to a medium by coming into contact with the medium onto which the liquid is ejected. The tension adjusting unit is capable of applying the tension to the medium at a balancing position at which the tension adjusting unit is balanced by a weight of the tension adjusting unit.

In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, the apparatus maintains tension in the plastic film web and supports and maintains the web horizontally aligned as it traverses through the machine. The apparatus includes upstream and downstream guide rollers. The upstream roller is mounted on an arm which is rotatably biased about a vertical axis and is thereby moveable. The upstream roller has an outer concave perimeter surface and the downstream roller has an outer convex perimeter surface. A longitudinal edge portion of the web extends horizontally from an upstream location, around the upstream roller, to and around the downstream roller and to a downstream location. The web extends vertically below the longitudinal edge portion. A rotational sensor coupled to the arm provides an output signal representative of the location of the arm.

Apparatus for vertically supporting and maintaining a web of plastic film horizontally aligned in applications such as machines that form the plastic film into bags and fill them. Separate coplanar consecutively spaced plates are aligned with and extend through a web normal traversing plane. One of the plates has a peak edge extending out of the web normal traversing plane in a first direction, whereas another has a peak edge extending out of the web normal traversing plane in a second opposite direction. The peak edges define an undulating plastic film travel path between a web upstream location and a web downstream location. The web of film is tensioned between the upstream location and the downstream location and travels along the continuous undulating path. The film flexibly bends over the peak edges as a result of the tension and is thereby supported and maintained aligned.

Apparatus for vertically supporting and maintaining a web of plastic film horizontally aligned in applications such as machines that form the plastic film into bags and fill them. Separate coplanar consecutively spaced plates are aligned with and extend through a web normal traversing plane. One of the plates has a peak edge extending out of the web normal traversing plane in a first direction, whereas another has a peak edge extending out of the web normal traversing plane in a second opposite direction. The peak edges define an undulating plastic film travel path between a web upstream location and a web downstream location. The web of film is tensioned between the upstream location and the downstream location and travels along the continuous undulating path. The film flexibly bends over the peak edges as a result of the tension and is thereby supported and maintained aligned.

A method and an apparatus for stabilizing the position of a sheet-like element made of hard brittle material during transportation thereof along a transport path is provided in which the element is guided through a roller chicane having three rollers.

A sheet can be securely drawn out of a sheet roll irrespective of an outer diameter of the sheet roll, and then, can be conveyed. A driven roller moves according to the outer diameter of the sheet roll, so as to be brought into press-contact with an outer periphery of the sheet roll from below, with respect to the direction of gravity, irrespective of the outer diameter of the sheet roll. An arm member moves according to the outer diameter of the sheet roll, so as to guide a lower side of the sheet drawn through above the driven roller irrespective of the outer diameter of the sheet roll.