摘要 |
PURPOSE:To reduce a broken damage of a sheet caused by a bend fault in case when the sheet is fed out, by detecting an abnormality of a running speed of the sheet. CONSTITUTION:A sheet 3' is selected, fed out by a sheet roll 2, and runs, sliding on an input item switch 5. This running speed is measured by a speed detecting part 9 and a speed detecting circuit provided in the vicinity of a running start point. When this running speed becomes below a constant speed, a damage of the sheet caused by a bend fault of the sheet 3' is prevented by raising an alarm to the outside, executing a reselection of the sheet 3' by rewinding the sheet again, and excuting a retry of a refeed-out or executing a stop of a machine. |