| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive transmission mechanism capable of precisely measuring abrasion of a tooth with a simple configuration.SOLUTION: A drive transmission mechanism includes a plurality of gears whose teeth engage with each other and a concave/convex portion that is at least one of a projection and a dent that is provided on a side surface intersecting with the rotation shaft of at least one gear of the plurality of gears and has a ridge line that extends along the contour of a tooth, the ridge line being used for a scale for measuring abrasion of the tooth.SELECTED DRAWING: Figure 2 |
