To solve the following problems: if a spool holding a roll sheet is heavy, the positioning operation in the sheet width direction in a printer mounting operation is difficult; the impact at the time of setting in a roll seat support part is high; and when the spool is obliquely removed from the roll seat support part, a groove for spool positioning and a plate for spool positioning are interfered with each other, and the spool is therefore not removed smoothly.
The rough positioning of the spool axial direction is performed in a temporary pedestal. During movement from the position to the roll seat support part, the positioning of the axial direction is completed by guidance of the contact surface between the spool and a rail. Then, the vigor of the spool in the fall direction thereof is buffered by a damper. The precise positioning in the sheet width direction is unnecessary, and even if the roll sheet is heavy, operability and silence are improved. Further, even if the spool is obliquely removed, a part of the positioning contact surface in closing positional relationship is cut. Therefore, the removing operation can be smoothly performed without interfering.
NAGASHIMA MASAKAZU
KOUDA TAKESHI
SAKURAI AKIO
Sogo Kuroiwa