| 发明名称 | Power supply device, image forming apparatus, and voltage output method | ||
| 摘要 | According to an aspect of the present invention, a power supply device includes: a DC power supply that outputs a DC voltage; an AC power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply. The DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode. | ||
| 申请公布号 | US9465348(B2) | 申请公布日期 | 2016.10.11 |
| 申请号 | US201414209005 | 申请日期 | 2014.03.13 |
| 申请人 | RICOH COMPANY, LTD. | 发明人 | Maekawa Tomonori;Nakaya Masahide;Takeuchi Tomokazu;Suzuki Katsuhito;Miura Shohgo |
| 分类号 | G03G15/16;G03G15/00;H02J5/00 | 主分类号 | G03G15/16 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A power supply device comprising: a direct-current (DC) power supply that outputs a DC voltage; an alternating-current (AC) power supply that outputs any one of the DC voltage and a superimposed voltage being the DC voltage with an AC voltage superimposed thereon; and a bypass capacitor that charges a part of a voltage that is output from the AC power supply, wherein the DC power supply starts outputting the DC voltage in a constant voltage mode and, when a predetermined condition that is associated with the bypass capacitor is satisfied, switches from the constant voltage mode to a constant current mode to output the DC voltage in the constant current mode. | ||
| 地址 | Tokyo JP | ||