| 摘要 |
A paper tray for a printer includes a paper support plate for supporting paper sheets stacked thereon and a support frame formed on the printer body adjacent the paper inlet. The paper support plate has a C-shaped hook having a base portion and upper and lower arms. The support frame has a protruding shaft and an upwardly inclined housing wall. The paper support plate is detachably hinged to the support frame with the C-shaped hook engaged with the protruding shaft so as to be rotated between a vertical position and a horizontal position. The housing wall extends forward beyond the protruding shaft and has a horizontal surface serving as a contact surface at the top of the extending portion. The C-shaped hook has a rib at the base portion. When the paper support plate is rotated to the horizontal position, the rotation is limited by the under surface of the rib coming in contact with the top surface of the extending portion. A reaction force acting on the C-shaped hook with a fulcrum on the contact portion between the top surface of the extending portion and the under surface of the rib is directed substantially vertically downward to the base portion of the hook. Accordingly, a force to be applied on the lower arm of the hook can be reduced, so that the hinge portion can be protected from breakage.
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