| 摘要 |
The printing apparatus comprises a first detachable unit U 1 , a second detachable unit U 2 , and a main body unit U 5 formed such that the first and second detachable units U 1 and U 2 are detachably mounted thereto. When a unit fixing means 33 provided on a head unit U 3 of the main body unit rotates in a clockwise direction to be laid horizontally and then a boss 36 is fitted into a concave portion 33 A, the head unit U 3 and a pinch roller unit U 4 are connected to each other through the unit fixing means. The first detachable unit is pressed by a left end of the unit fixing means, and the second detachable unit is pressed by a right end of the unit fixing means. As a result, it is possible to prevent the first and second detachable units from separating from the main body unit forward. In addition, when the unit fixing means is rotated in a counterclockwise direction to be upwardly constructed, the first detachable unit U 1 and the second detachable unit U 2 can be mounted detachably to the main body unit.
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