| 摘要 |
<p>PURPOSE:To provide a sheet transport roller replacement timing detecting device with which replacement timing for a sheet transport roller such as a feed roller can be detected correctly. CONSTITUTION:A time during which a calling roller 3, a paper feed roller 4, and a reverse rotation roller 5 are driven and rotated is measured, and that the rollers are required to be replaced is displayed in a display when the time reaches a predetermined value.</p> |
