| 摘要 |
PURPOSE: To obtain good printing quality by making the position of a recording medium before drive force is changed over to a negative pressure generating means the same as that of the recording medium after the drive force is again changed over to a recording medium feed means. CONSTITUTION: When a carriage is positioned within a range possible to purge, a meshing gear 39 is meshed with a purge gear 42 to transmit drive force to a pump cam gear and a pump is driven. At this time, the meshing gear 40 is not meshed with a platen gear 7 and a platen roller is not driven. Since a gear 100 impossible to rotate is fitted to the platen gear 7 at this time, the rotation of the platen gear 7 caused by the vibration generated by the driving of a drive force distributing gear 41 is prescribed. When the carriage is again moved to a paper feed possible range, since the platen gear 7 is held to the position before changeover, the meshing gear 40 and the platen gear 7 are meshed at the same position as that before changeover. |
