| 发明名称 | Sheet material storage, sheet feeding device, and image forming apparatus | ||
| 摘要 | A sheet material storage includes a housing space structure that forms a housing space to house a sheet material and an acoustic device that uses a Helmholtz resonator. At least a part of a cavity of the Helmholtz resonator is formed in the housing space structure. | ||
| 申请公布号 | US9546057(B2) | 申请公布日期 | 2017.01.17 |
| 申请号 | US201615008809 | 申请日期 | 2016.01.28 |
| 申请人 | RICOH COMPANY, LTD. | 发明人 | Ishida Masahiro;Matsuda Naoki |
| 分类号 | B65H1/00;B65H1/26 | 主分类号 | B65H1/00 |
| 代理机构 | Harness, Dickey & Pierce, P.L.C. | 代理人 | Harness, Dickey & Pierce, P.L.C. |
| 主权项 | 1. A sheet material storage comprising: a housing space structure that forms a housing space to house a sheet material; and an acoustic device including a cavity and an opening, wherein at least a part of the cavity is formed in the housing space structure. | ||
| 地址 | Tokyo JP | ||