| 发明名称 | Image reading apparatus and image forming apparatus | ||
| 摘要 | An image reading apparatus includes: an opening/closing portion configured to be rotatable around a hinge shaft; a biasing portion configured to apply a force to the opening/closing portion such that moment of the hinge shaft rotation higher than moment of the hinge shaft rotation according to self-weight of the opening/closing member is generated in a state in which the opening/closing portion is placed in a range up to a predetermined rotation angle from a closed position with respect to the apparatus main body, and moment of the hinge shaft rotation that is balanced with the moment of the hinge shaft rotation according to the self-weight of the opening/closing portion is generated in a state in which the opening/closing portion is opened more than the predetermined rotation angle; and a holding portion configured to maintain the opening/closing portion at the closed position. | ||
| 申请公布号 | US9100521(B2) | 申请公布日期 | 2015.08.04 |
| 申请号 | US201414286180 | 申请日期 | 2014.05.23 |
| 申请人 | CANON KABUSHIKI KAISHA | 发明人 | Yamamoto Yuichi;Sakuma Tomofumi |
| 分类号 | H04N1/04;H04N1/00;G03G15/00;H04N1/12 | 主分类号 | H04N1/04 |
| 代理机构 | Fitzpatrick, Cella, Harper & Scinto | 代理人 | Fitzpatrick, Cella, Harper & Scinto |
| 主权项 | 1. An image reading apparatus comprising: an apparatus main body; an opening/closing portion configured to be rotatable with respect to the main body, around a hinge shaft; a biasing portion configured to (i) apply a force to the opening/closing portion in an opening direction to generate a moment about the hinge shaft higher than a moment of the self-weight of the opening/closing portion about the hinge shaft in a state in which the opening/closing portion is in a range from a closed position to a predetermined rotation angle with respect to the apparatus main body and (ii) generate a moment about the hinge shaft that is substantially balanced with the moment of the self-weight of the opening/closing portion about the hinge shaft in a state in which the opening/closing portion is opened more than the predetermined rotation angle; and a holding portion configured to hold the opening/closing portion in a holding state, the holding state being the state of the opening/closing portion at the closed position, wherein, in a case that the holding state is released, the opening/closing portion rotates from the closed position to the predetermined rotation angle by the force applied by the biasing portion. | ||
| 地址 | Tokyo JP | ||