| 发明名称 | Fixing device and image forming apparatus | ||
| 摘要 | A fixing device includes a first roller contacting a fixing belt to generate a rotation friction force therebetween to rotate the fixing belt and a second roller contacting the fixing belt to exert a first inhibition force to the fixing belt in a direction opposite a direction of rotation of the fixing belt. A separation aid is disposed downstream from a fixing nip formed between the fixing belt and a pressure rotator in the direction of rotation of the fixing belt to decrease a curvature of the fixing belt and exert a second inhibition force to the fixing belt in the direction opposite the direction of rotation of the fixing belt. The second inhibition force is added to the first inhibition force to obtain a combined inhibition force that is smaller than the rotation friction force between the fixing belt and the first roller. | ||
| 申请公布号 | US9316979(B2) | 申请公布日期 | 2016.04.19 |
| 申请号 | US201514632523 | 申请日期 | 2015.02.26 |
| 申请人 | Ricoh Company, Ltd. | 发明人 | Nozawa Kenji;Okamoto Masami;Sasaki Yoshikuni;Kikushima Yuuki;Hirose Fumihiro;Kubota Keisuke;Yuasa Shuutaroh;Hemmi Kaori |
| 分类号 | G03G15/20 | 主分类号 | G03G15/20 |
| 代理机构 | Harness, Dickey & Pierce, P.L.C. | 代理人 | Harness, Dickey & Pierce, P.L.C. |
| 主权项 | 1. A fixing device comprising: an endless fixing belt rotatable in a set direction of rotation; a first roller contacting the fixing belt and including a surface elastic layer to generate a rotation friction force between the fixing belt and the first roller to rotate the fixing belt; a second roller contacting the fixing belt to exert a first inhibition force to the fixing belt in a direction opposite the direction of rotation of the fixing belt, the fixing belt stretched taut across the first roller and the second roller; a pressure rotator pressed against the first roller via the fixing belt to form a fixing nip between the fixing belt and the pressure rotator, through which a recording medium is conveyed; and a separation aid disposed downstream from the fixing nip in the direction of rotation of the fixing belt to decrease a curvature of the fixing belt and exert a second inhibition force to the fixing belt in the direction opposite the direction of rotation of the fixing belt, the second inhibition force being added to the first inhibition force to obtain a combined inhibition force that is smaller than the rotation friction force between the fixing belt and the first roller, wherein the separation aid projects from an outer circumferential surface of the first roller radially. | ||
| 地址 | Tokyo JP | ||