Sheet conveyor and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorHiroaki Miyagawa
Life of this patent
Estimating the term…
Abstract
A sheet conveyor includes: a drum to: carry a sheet on a circumferential surface of the drum; and rotate to convey the sheet; and adhering part to adhere the sheet to the circumferential surface of the drum, wherein the drum has: both end parts in an axial direction of the drum, the both end parts each having a first outer diameter in a radial direction orthogonal to the axial direction; and a center part between the both end parts in the axial direction of the drum, the center part having a second outer diameter smaller than the first outer diameter in the radial direction.
Claims16
A sheet conveyor comprising:
- a drum to:
- carry a sheet on a circumferential surface of the drum;
- and
- rotate to convey the sheet;
- and
- an adhering part to adhere the sheet to the circumferential surface of the drum by a suction force,
- wherein the drum has:
- both end parts in an axial direction of the drum, the both end parts each having a first outer diameter in a radial direction orthogonal to the axial direction;
- a center part between the both end parts in the axial direction of the drum, the center part having a second outer diameter smaller than the first outer diameter in the radial direction;
- and
- flexible suction plates which concavely bend, by the suction force, in the axial direction.
A sheet conveyor comprising:
- a drum to:
- carry a sheet on a circumferential surface of the drum;
- and
- rotate to convey the sheet;
- and
- an adhering part to adhere the sheet to the circumferential surface of the drum, wherein the drum includes:
- both end parts in an axial direction of the drum, the both end parts each having a first outer diameter in a radial direction orthogonal to the axial direction;
- a center part between the both end parts in the axial direction of the drum, the center part having a second outer diameter smaller than the first outer diameter in the radial direction;
- a suction plate having multiple suction holes on a circumferential surface of the suction plate;
- and
- a cylinder,
- the adhering part includes a suction pump to suck the sheet through the multiple suction holes,
- the suction plate is flexibly attached to a circumferential surface of the cylinder to allow a center of the sheet, adhered to the suction plate, in a width direction of the sheet to be concaved toward the center part of the drum, and
- the both end parts of the drum respectively have spacers which are disposed between the suction plate and the circumferential surface of the cylinder in the radial direction.
Dependencies are inferred from the claim text.