| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording device that is further reduced in size and has more excellent lubricity and durability.SOLUTION: A drive shaft transmits a driving force of rotation to a roller that is one example of a conveyance means for conveying a paper sheet which is one example of a recorded medium. A bearing 21 receives the drive shaft on an inner peripheral surface 31. On the inner peripheral surface of the bearing 21, grease grooves 33-1 and 33-2 being the grease grooves 33-1 and 33-2 for storing grease are formed which extend in a direction intersecting with both axial and circumferential directions. |
