| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of damage on a driving mechanism when the excessive force is exerted on a tray. SOLUTION: A driving gear 8 is movably supported along the axial direction of a rotary shaft 41, and a cog part 31 of a rack 3 is inclined with respect to the axial direction of the driving gear 8 in the direction orthogonally crossing with the aligned direction of the cog part 31. Then, an energizing means 6 is provided for energizing the driving gear 8 to such a direction that a cog part 81 of the driving gear 8 is deeply engaged with the cog part 31 of the rack 3, out of two directions along the axial direction of the driving gear 8. COPYRIGHT: (C)2005,JPO&NCIPI
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