| 摘要 |
A printer unit comprises a first positioning mechanism and a second positioning mechanism for positioning a platen with respect to a print head when a cover frame is closed. The first positioning mechanism is constituted to restrict a change in the position of the platen to a rotation around a first positioning fulcrum, such as a lock pin. The second positioning mechanism is constituted to restrict the rotation of the platen around a first positioning fulcrum by abutment on a second positioning fulcrum, such as a lock lever spindle.
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