Reference Position Detection Device For Rotary Mechanism, Platen Gap Adjustment Mechanism, And Printer

摘要

A small, compactly configured reference position detection device 170 for a rotary transfer mechanism includes a rotary member 130 that can rotate through a rotational angle less than one revolution from a first rotational position past a second rotational position and reference position to a third rotational position; a detection flag disc 151 that can move in a range from a first position past a detection position to a second position; a detector 162 that detects the detection flag passing the detection position, and a flag moving mechanism. The flag moving mechanism can move the detection flag disc 151 tracking the rotary member 130. The position of detection flag disc 151 movement when passing the reference position of the rotary member 130 is the detection position.

主权项

1. A reference position detection device of a rotary mechanism, comprising:
a rotary member that can rotate through a rotational angle less than one revolution from a first rotational position past a second rotational position and reference position to a third rotational position; a detection flag that can move in a range from a first position past a detection position to a second position; a detector that detects the detection flag passing the detection position; and a flag moving mechanism that engages the rotary member rotating from the second rotational position to the third rotational position and moves the detection flag from the first position to the second position, follows the rotary member rotating from the third rotational position to the second rotational position, and moves the detection flag from the second position to the first position; the position of detection flag movement when passing the reference position of the rotary member being the detection position.