Patent classifications
B65H2404/174
Sheet conveying device and image forming apparatus including sheet conveying device
A sheet conveying device includes a first conveyance roller, a sheet conveyance path, a second conveyance roller, and a pair of bearing portions. The first conveyance roller is provided in an apparatus main body. The sheet conveyance path has a guide surface that guides a sheet member in a sheet conveyance direction. The second conveyance roller is rotatably attached to the guide surface via a shaft and abuts on the first conveyance roller by a predetermined pressing force. The bearing portions are provided on the guide surface and support the shaft. Each bearing portion includes a concave groove portion and a bush member. The concave groove portion is formed on the guide surface such that a groove depth direction is perpendicular to the guide surface. The bush member is attached to the concave groove portion so as to be slidable in the groove depth direction and support the shaft.
Medium transporting device, image reading apparatus, and recording apparatus
A medium transporting device includes a driving roller that transports a medium and that is driven to rotate, a driven roller that nips the medium between the driving roller and the driven roller and rotates in accordance with the rotation of the driving roller, a rotary shaft of the driven roller, a first pressing member that presses the rotary shaft in a direction in which the driven roller comes into contact with the driving roller, a second pressing member that presses the rotary shaft in a direction in which the driven roller comes into contact with the driving roller, and a spacer member that is integrally provided with a first spacer interposed between the rotary shaft and the first pressing member and a second spacer interposed between the rotary shaft and the second pressing member.
Sheet conveying apparatus and image forming apparatus
A sheet conveying apparatus includes a conveying roller, a pinch roller, a holding member, and a pressing device. The pinch roller includes a roller shaft and a roller body rotatable relative to the roller shaft. The roller shaft includes a first end portion and a second end portion. The holding member holds the roller shaft movably in a first direction. The pressing device presses the roller shaft in a pressing direction such that the roller body is pressed against a peripheral surface of the conveying roller. The first end portion of the roller shaft has a first contact surface being a planar surface. The second end portion of the roller shaft has a second contact surface being a planar surface. The roller shaft is disposed such that the first contact surface and the second contact surface are oriented in the pressing direction.
ROTARY MEMBER SUPPORT STRUCTURE, TRANSPORT DEVICE, CHARGING DEVICE, AND IMAGE FORMING APPARATUS
A rotary member support structure includes: a rotary member including a shaft; a bearing that rotatably supports the shaft of the rotary member; a pressing member that presses the bearing in one direction; and a support that supports the bearing such that the bearing is movable in a pressing direction of the pressing member. When the rotary member is not rotating, the bearing and the pressing member are in contact with each other such that the bearing is rotatable about the shaft.
MEDIUM TRANSPORTING DEVICE, IMAGE READING APPARATUS, AND RECORDING APPARATUS
A medium transporting device includes a driving roller that transports a medium and that is driven to rotate, a driven roller that nips the medium between the driving roller and the driven roller and rotates in accordance with the rotation of the driving roller, a rotary shaft of the driven roller, a first pressing member that presses the rotary shaft in a direction in which the driven roller comes into contact with the driving roller, a second pressing member that presses the rotary shaft in a direction in which the driven roller comes into contact with the driving roller, and a spacer member that is integrally provided with a first spacer interposed between the rotary shaft and the first pressing member and a second spacer interposed between the rotary shaft and the second pressing member.
Ink-jet printer
There is provided an image recording apparatus including a transporting path, a recording section, a first and second rollers pinching the recording medium therebetween, a supporting member which rotatably supports the second roller, a holding member which is movable along a transporting direction of the recording medium, a bias applying member which applies a bias on the holding member, in an opposite direction opposite to the transporting direction and a load member which generates a load in the opposite direction, with respect to the recording medium.
Sheet Conveying Apparatus and Image Forming Apparatus
A sheet conveying apparatus includes a conveying roller, a pinch roller, a holding member, and a pressing device. The pinch roller includes a roller shaft and a roller body rotatable relative to the roller shaft. The roller shaft includes a first end portion and a second end portion. The holding member holds the roller shaft movably in a first direction. The pressing device presses the roller shaft in a pressing direction such that the roller body is pressed against a peripheral surface of the conveying roller. The first end portion of the roller shaft has a first contact surface being a planar surface. The second end portion of the roller shaft has a second contact surface being a planar surface. The roller shaft is disposed such that the first contact surface and the second contact surface are oriented in the pressing direction.
Image forming apparatus
An image forming apparatus includes an image forming unit configured to form an image on a sheet, a duplex conveyance path through which the sheet having the image formed by the image forming unit on a first side passes when an image is formed on a second side that is a back side of the first side, a guiding member provided along the duplex conveyance path, a reversing roller pair capable of rotating in a forward direction and in a reverse direction, h, and a conveyance roller pair provided on the duplex conveyance path, wherein at least one of the reversing roller pair is inclined to the width direction so that, in the width direction, the side end of the sheet being conveyed by the reversing roller pair rotating in the reverse direction moves closer to the contact portion.