| 发明名称 | Printing apparatus and feeding control method | ||
| 摘要 | According to the embodiment, a printing apparatus includes: a printing unit that forms an image on a web; a first feeding unit that feeds the web; a second feeding unit downstream of the printing unit in a feed direction; a buffer unit that has a buffer plate and absorbs flexure of the web generated by the two feeding units by operating the buffer plate; a first feeding control unit that causes the first feeding unit to execute a first deceleration operation; and a second feeding control unit that causes the second feeding unit to execute the first deceleration operation when a trigger for stopping the feed of the web has occurred, measures a feed amount of the web fed by the second feeding unit, and changes the first deceleration operation to a second deceleration operation based on the feed amount. | ||
| 申请公布号 | US8851772(B2) | 申请公布日期 | 2014.10.07 |
| 申请号 | US201213611418 | 申请日期 | 2012.09.12 |
| 申请人 | Ricoh Company, Limited | 发明人 | Gouda Mitsunobu;Ishizawa Katsumi |
| 分类号 | B41J11/00;B41J15/00;G03G15/00;B41J11/42 | 主分类号 | B41J11/00 |
| 代理机构 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A printing apparatus, comprising: a printing unit that forms an image on a web; a first feeding unit that feeds the web in the printing unit; a second feeding unit that feeds the web downstream of the printing unit in a feed direction; a buffer unit that has a buffer plate and absorbs flexure of the web generated by a feed difference between the first feeding unit and the second feeding unit by operating the buffer plate; a first feeding control unit that causes the first feeding unit to execute a deceleration operation for decelerating a feed speed of the web when a trigger for stopping the feed of the web has occurred; and a second feeding control unit that: causes the second feeding unit to execute a first deceleration operation for decelerating the feed speed of the web when the trigger for stopping the feed of the web has occurred,measures, with a sensor, a feed amount of the web fed by the second feeding unit during a period beginning at a first time and until a predetermined time passes, andwhen the feed amount is larger than a threshold value, changes the first deceleration operation executed by the second feeding unit to a second deceleration operation based on the feed amount, wherein the second deceleration operation is an operation for decelerating the feed speed of the web more than the first deceleration operation. | ||
| 地址 | Tokyo JP | ||