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US 11,046,098 B2Granted
Noise reducing structure and image forming apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorsKo Umenai, Fuyuki Kokubu, Takayuki Suehiro
Life of this patent
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Abstract
A noise reducing structure includes a first resonance tube that extends in a first direction, that takes in from a sound absorbing opening portion a sound wave that is generated from a noise source, and that causes the sound wave to resonate to reduce leakage to outside; and a second resonance tube that extends in a second direction differing from the first direction, and that, along with the first resonance tube, causes the sound wave that is generated from the noise source to resonate to reduce the leakage to the outside.
Claims7
A noise reducing structure comprising:
- a first resonance tube that extends in a first direction, that takes in from a sound absorbing opening portion a sound wave that is generated from a noise source, and that causes the sound wave to resonate to reduce leakage to outside;
- a second resonance tube that extends in a second direction differing from the first direction, and that, along with the first resonance tube, causes the sound wave that is generated from the noise source to resonate to reduce the leakage to the outside;
- and
- a third resonance tube that extends in a third direction differing from the first and second directions, and that, along with the first and second resonance tubes, causes the sound wave that is generated from the noise source to resonate to reduce the leakage to the outside,
- wherein the first and second resonance tubes are disposed on a substantially plate-shaped member, and the second and third resonance tubes are disposed with the substantially plate-shaped member interposed therebetween.
2 more elements
Dependencies are inferred from the claim text.