Image-forming machine

An image-forming machine comprising a conveying passage for conveying a sheet material through a transfer zone, a first discharge passage extending from the conveying passage, a second discharge passage extending from the first discharge passage, a first receiving means for receiving the sheet material with its image-bearing surface up, and a second receiving member for receiving the sheet material with its image-bearing surface down;

• wherein
• the first receiving means is comprised of a receiving plate which is free to pivot between a first position at which it extends nearly horizontally and a second position at which is extends nearly perpendicularly,
• when the receiving plate is at the first position, it receives the sheet material discharged from the first discharge passage, and when it is at the second position, it defines one side of the second discharge passage in cooperation with an opening-closing guide plate being free to pivot between a closing position at which it defines part of the second discharge passage and an opening position at which it opens said part, and
• when the receiving plate is held at the second position, the opening-closing guide plate is held at the closing position.

An image-forming machine comprising a main body adapted to form an image on one surface of a sheet material while it is conveyed through a conveying passage, and an auxiliary unit mounted on the main body;

• wherein
• the auxiliary unit is provided with an introduction passage for introducing the sheet material having an image formed on its one surface, a reversal holding portion for holding the sheet material conducted through the introduction passage, a receiving-refeeding means for receiving the sheet material and re-feeding the received sheet material toward the conveying passage, a return passage for conducting the sheet material held by the reversal holding portion into the receiving-refeeding means from the trailing end of the sheet material with its direction reversed, and a sheet detecting means disposed near the crossing point of the introduction passage, the reversal holding portion and the return passage,
• the sheet detecting means has a detecting arm portion projecting into the introduction passage, and
• the detecting arm portion has a detecting portion which acts on the sheet material to be fed to the reversal holding portion via the introduction passage and a guide portion which hampers the introduction of the sheet material from the reversal holding portion into the introduction passage.