| 摘要 |
PURPOSE:To obtain the closing timing of the rotary driving clutch of a folding cylinder conformed to the rotary phase of a plate cylinder at the time of starting by providing a phase detecting means detecting the rotary phase of the plate cylinder of a printing unit and a reference-position detecting means detecting the rotational reference position of the plate cylinder of a delivery. CONSTITUTION:When a printer is started, a motor 19 for correcting phase is driven, a rotating section 17 is turned gradually until a phase sensor 18 detects a rotational reference positional mark, and the motor 19 for correcting phase is stopped and the revolution of the rotating section 17 is stopped when the phase sensor 18 detects the rotational reference positional mark. When the rotation of a main motor 10 is started and a printing unit 4 is driven, detecting signals are transmitted from a phase sensor 16 every time the phase detecting marks of a rotating section 15 turned synchronized with the revolution of the plate cylinder of a printing unit 4D are detected, and a lamp. etc., are display to the outside at the timing of the detecting signals. An operator turns clutches 13, 14 ON in conformity with the display timing. |
