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US 12,434,928 B2Granted
Sheet feeding device and image forming apparatus incorporating the sheet feeding device
AssigneeRicoh Company, Ltd.
InventorsSachika Tamaki, Hidetoshi Kojima
Life of this patent
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Abstract
A sheet feeding device includes an air blower and circuitry. The air blower includes a first suction fan, and a second suction fan serially coupled to the first suction fan. The circuitry is to stop the first suction fan at a first timing, and stop the second suction fan at a second timing different from the first timing. An image forming apparatus includes the sheet feeding device.
Claims8
A sheet feeding device comprising:
- an air blower including:
- a first suction fan including a first rotor blade;
- and
- a second suction fan including a second rotor blade, the second suction fan serially coupled to the first suction fan, and
- circuitry configured to:
- stop the first suction fan at a first timing;
- stop the second suction fan at a second timing earlier than the first timing;
- cause the first rotor blade and the second rotor blade to rotate;
- cause the first rotor blade to rotate at a first number of rotations per unit time during a first period;
- cause the first rotor blade to rotate at a second number of rotations per unit time larger than the first number of rotations per unit time during a second period other than the first period;
- and
- cause the second suction fan to stop at the second timing during the second period.
9 more elements
Dependencies are inferred from the claim text.