| 摘要 |
<p>PURPOSE:To instantly improve the function from the ordinary function to the both-surface copying function of a copying machine by installing a passage selecting mechanism for selecting a paper discharge passage and a both-surface copying passage and accommodating a stacker equipped with a paper supplying means in replaceable manners with one of the paper feeding trays which are installed in two stages or more. CONSTITUTION:A passage selecting mechanism 20 for selecting a paper discharge passage A and a both-surface copying passage B is equipped with a hook body which swings, having the shaft of a paper discharge roller 21b as supporting point. When a stacker 24 is accommodated in replaceable manners into an upper stage accommodating chamber 3a, a paper which is supplied from a lower stage paper feeding tray 2 and one-surface copied is accommodated into the stacker 24 through the both-surface copying passage B after fixation without being discharged. Then, papers are supplied again one by one from the inside of the stacker 24 by the actions of a driving roller 26 and a following roller 27, and nipped by a paper feeding roller 5 at the outlet of a paper feeding passage 31, and transported to the second paper feeding roller 7 through an upper stage paper feeding passage 6a. The paper is supplied into a copying part 16, and both-surface copying is carried out, and after fixation is carried out, the paper is discharged into a paper discharge plate 22 outside the machine through the paper discharge passage A.</p> |
