| 摘要 |
It is a drive transmission mechanism for a printer apparatus, which has a conveying roller gear connected to a conveying roller, an intermediate gear including a small-diameter intermediate gear portion for rotating the conveying roller gear, and an intermediate gear supporting shaft rotatably supporting a shaft insertion hole of the intermediate gear. In this mechanism, the conveying roller gear includes a conveying roller gear circular portion having a diameter that is substantially equal to the reference pitch circle diameter of the conveying roller gear. The intermediate gear includes a small-diameter intermediate gear circular portion having a diameter that is substantially equal to the reference pitch circle diameter of a small-diameter intermediate gear portion. Further, the intermediate supporting shaft is mounted therein in such a manner as to provide a predetermined fitting clearance between the intermediate supporting shaft and the shaft insertion hole.
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