Provided is a roller capable of suppressing generation of cut waste from an end of a roller due to contact with another member inside a device when mounted on an image forming device, particularly a conductive roller, and an image forming device using the same. A roller includes a shaft 1 and a base layer 2 provided on the outer periphery of the shaft. A filler layer 4 covering the base layer is provided on end faces of both ends of the base layer in the roller axial direction, and the filler layer is composed of a material having a breaking strain measured according to a tensile test of JIS K 7127 of not less than 120% and a tensile stress at 100% elongation measured according to a tensile test of JIS K 7127 of from 5 to 30 N/mm.sup.2.

A compact bearing unit (1) for a double disc coulter (2) with ball bearing (23) with an inner ring (3), outer ring (5) with flange facing and a protective cap (7) has a multi-stage sealing system. A first seal (11) is provided between the inner ring 3 and an internal ring race (17) of the outer ring (5). At least one additional seal (14) is arranged between the protective cap (7) and a ring race (13, 17) of the outer ring (5), whereby said seal does not make any additional installation space necessary in the axial direction of the bearing unit (1).

A paper feed roller 1 is used in a paper feeding unit in an electrophotographic image forming device. The paper feed roller 1 includes a non-foamed elastic body 2 having an embossed surface 21 including crest-like parts 211 and valley-like parts 212. The embossed surface 21 has many dimple parts 213 recessed inward on bottom surfaces of the valley-like parts 212 or on the bottom surfaces and lateral surfaces of the valley-like parts 212, and does not have the many dimple parts 213 on top parts of the crest-like parts 211. A diameter of the dimple parts 213 can be set to be 1 to 100 μm and an arithmetic average height Ra of the embossed surface 21to be 3 to 50 μm.

A paper feed roller 1 is used in a paper feeding unit in an electrophotographic image forming device. The paper feed roller 1 includes a non-foamed elastic body 2 having an embossed surface 21 including crest-like parts 211 and valley-like parts 212. The embossed surface 21 has many dimple parts 213 recessed inward on bottom surfaces of the valley-like parts 212 or on the bottom surfaces and lateral surfaces of the valley-like parts 212, and does not have the many dimple parts 213 on top parts of the crest-like parts 211. A diameter of the dimple parts 213 can be set to be 1 to 100 μm and an arithmetic average height Ra of the embossed surface 21to be 3 to 50 μm.

A roller arrangement for a web processing system, the roller arrangement comprising a roller and at least one rotational shaft having a shaft portion and an attachment portion and wherein the at least one rotational shaft is releasably connectable to the roller.

A roller arrangement for a web processing system, the roller arrangement comprising a roller and at least one rotational shaft having a shaft portion and an attachment portion and wherein the at least one rotational shaft is releasably connectable to the roller.

An aircraft landing gear assembly including structural members coupled via a coupling including a bearing. The bearing has a body defining a first bearing surface arranged to contact a first counter-face of the coupling. The first bearing surface is defined by a first tubular layer of fibre reinforced polymer of a first type having an axis and containing synthetic fibres of a first type wound around and along the axis of the bearing. The bearing body further has a second tubular layer of fibre reinforced polymer of a second type containing synthetic fibres of a second type wound around and along the axis of the bearing.

Provided is a developer carrying member that can stably form a high-quality electrophotographic image. The developer carrying member includes an electroconductive support and a surface layer in the stated order, wherein the surface layer contains a binder resin and electroconductive particles, and a content of the electroconductive particles in a region from a surface of the surface layer opposite to an outer surface thereof on a side facing the electroconductive support to a depth of 150 nm is 1% or more and 25% or less, and wherein the surface layer has a volume resistivity of 1.0×10.sup.−2 Ω.Math.cm or more and 1.0×10.sup.2Ω.Math.cm or less.

A device for rotation of an object disposed on a horizontal surface, about a vertical axis, includes a base for an object, for rotation about a vertical central axis of the base, at low rotational speeds without achieving the gyroscope principle. The base has a lower surface, at least one downwardly projecting, central pivot lug for rotation of the base thereupon and at least one lateral lug spaced radially from the central lug and having a height less than the central pivot lug. The base is configured and dimensioned to rotate when caused to spin while being continuously supported both by the central pivot lug and at least a portion of the lateral lug as it spins. The base is tilted from the vertical axis at a minor angle, with the difference in heights of the central lug and lateral bearing lugs ranging from 0.025 to 1.25 mm.

Provided is a roller, in particular a conductive roller, capable of suppressing generation of cut debris from a cut surface of an end part of a foam layer in the roller axial direction over a long period of time, and an image forming device using the roller. A roller includes a shaft 1, a foam layer 2 and at least one film layer 3 sequentially provided on the outer periphery of the shaft. Both end parts in the roller axial direction of the foam layer and the film layer are cut, a filler layer 4 is provided on the cut surface of the cut foam layer and the cut film layer, at least the cut surface of the foam layer is covered with the filler layer, and the filler layer contains a water-based urethane resin.