11results about "Printing processes" patented technology

The present invention provides a sheet conveying device and an image forming apparatus that can reliably bring the conveying rollers into contact with the frame. [Solution] A sheet conveying device comprising: a conveying roller for conveying a sheet; a conductive bearing that rotatably supports the rotation axis of the conveying roller; a grounded frame that supports the conveying roller; and a bearing holder supported by the frame and holding the bearing, wherein the bearing holder comprises a first member made of a non-conductive resin and a second member made of a conductive resin, and the second member is in contact with the bearing and the frame.

The invention relates to a first roller arrangement (1) having at least two rollers (2, 3) arranged axially parallel, a roller gap (5) being formed between adjacent rollers, each of the rollers (2, 3) having a roller journal (7, 8) at each of the two axial ends (6) thereof and each roller (2, 3) being supported by the two roller journals (7, 8) thereof, at least two bearings (9, 10) are arranged axially next to each other at least on a first roller journal (7) of a first of the rollers (2) and on an adjacent first roller journal (7) of a second of the rollers (3), a compressive stress is generated between the inner bearing (9) on the first roller journal (7) of the first roller (2) and the outer bearing (10) on the first roller journal (7) of the second roller (3) and a tensile stress is generated between the outer bearing (10) on the first roller journal (7) of the first roller (2) and the inner bearing (9) on the first roller journal (7) of the second roller (3), or vice versa.

To improve a roller device so as to reduce a clearance of a bearing while improving feeding.SOLUTION: A roller arrangement (1) comprising at least two rollers (2, 3), wherein a nip (5) is formed between at least two adjacent rollers, wherein each of the at least two rollers is provided with a roller journal (7), and wherein the roller journal is provided at an axial end opposite the roller journal. At least on both the first roller journal 2 of the first one of the at least two rollers and the first roller journal of the second one of the at least two rollers 3, at least two bearings 9,10 are arranged axially side by side, wherein opposing mechanical stresses are generated between the at least two bearings on the first roller journal of the first roller and said at least two bearings on the first roller journal of the second roller.SELECTED DRAWING: Figure 2

A device for producing a releasable clearance-free position of a rolling bearing, having a rolling bearing which has an outer ring, an inner ring mounted on a shaft and a plurality of rolling elements arranged between the inner ring and the outer ring, and having a tensioning device mounted on the circumference of the rolling bearing outer ring for generating a radial preload which is uniform over the outer circumference of the rolling bearing outer ring between the tensioning device and the rolling bearing outer ring, wherein the tensioning device has an axially adjustable tensioning element which can be brought into a first alignment in which the rolling bearing has play, and which can be brought into a second alignment in which the rolling bearing is free of play. A corresponding method is also described.

Roller arrangement (1) with at least two axially parallel rollers (2, 3), wherein a roller gap (5) is formed between adjacent rollers, wherein each of the rollers (2, 3) has a roller journal (7, 8) at each of its two axial ends (6) and each roller (2, 3) is supported via its two roller journals (7, 8), wherein at least two bearings (9, 10) are arranged axially next to each other at least on a first roller journal (7) of a first of the rollers (2) and on an adjacent first roller journal (7) of a second of the rollers (3), wherein a compressive stress (20) is generated between an inner bearing (9) on the first roller journal (7) of the first roller (2) and an outer bearing (10) on the first roller journal (7) of the second roller (3) and a tensile stress (21) is generated between an outer bearing (10) on the first roller journal (7) of the first roller (2) and an inner bearing (9) on the first roller journal (7) of the second roller (3) or vice versa.