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US 2022/0161578 A1Published application
Sheet suction device, sheet conveyor, and printer
AssigneeRicoh Company, Ltd.
InventorHiroaki MIYAGAWA
Life of this patent
Estimating the term…
Abstract
A sheet suction device includes a drum including multiple suction holes in a circumferential surface of the drum, the drum configured to bear a sheet on the circumferential surface and rotate, a suction device configured to suck the sheet through the multiple suction holes, a rotary valve between the multiple suction holes of the drum and the suction device, the rotary valve configured to rotate relative to the drum to change a number of the multiple suction holes communicating with the suction device, and a driver configured to relatively rotate the drum and the rotary valve.
Claims8
A sheet suction device comprising:
- a drum including multiple suction holes in a circumferential surface of the drum, the drum configured to bear a sheet on the circumferential surface and rotate;
- a suction device configured to suck the sheet through the multiple suction holes;
- a rotary valve between the multiple suction holes of the drum and the suction device, the rotary valve configured to rotate relative to the drum to change a number of the multiple suction holes communicating with the suction device;
- and
- a driver configured to relatively rotate the drum and the rotary valve.
2 more elements
Dependencies are inferred from the claim text.