| 摘要 |
The ribbon winding unit is equipped with a first moving gear, a second moving gear, a first intermediate gear, a tumbler gear, and a winding member. The first intermediate gear engages with the first moving gear when the first moving gear and the second moving gear move in a given direction, and disengages from the first moving gear when the first moving gear and the second moving gear move in an opposite direction. The tumbler gear engages with the first intermediate gear, engages with the second moving gear when the first moving gear and the second moving gear move in the opposite direction, and disengages from the second moving gear when the first moving gear and the second moving gear move in the given direction. |
| 主权项 |
1. A printing apparatus, characterized by comprising:
a rack; a carriage equipped with a printing section and a winding unit that includes a winding axle that winds an ink ribbon; and a driving unit that causes the carriage to move along the rack; wherein the winding unit includes a first moving gear that engages with the rack, is swingably supported by the carriage, and rotates according to movement of the carriage, while also, due to force applied from the rack during movement of the carriage, moving in an opposite direction inside the carriage with respect to movement of the carriage in a given direction, and moving in the given direction inside the carriage with respect to movement of the carriage in the opposite direction, a second moving gear that engages with the rack, is swingably supported by the carriage, and rotates according to movement of the carriage, while also, due to force applied from the rack during movement of the carriage, moving in an opposite direction inside the carriage with respect to movement of the carriage in a given direction, and moving in the given direction inside the carriage with respect to movement of the carriage in the opposite direction, a first intermediate gear that engages with the first moving gear when the first and second moving gears move in the given direction inside the carriage, and disengages from the first moving gear when the first and second moving gears move in the opposite direction inside the carriage, a second intermediate gear that engages with the first intermediate gear, engages with the second moving gear when the first and second moving gears move in the opposite direction inside the carriage, and disengages from the second moving gear when the first and second moving gears move in the given direction inside the carriage, and a winding member that includes the winding axle and an output gear, disposed coaxially with the winding axle, that engages with the first intermediate gear. |
