Image-forming machine

An image-forming machine comprising a conveying passage for conveying a sheet material through a transfer zone, a first and a second feed means for feeding the sheet material to the conveying passage, a first feed passage for conducting the sheet material delivered from the first feed means to the conveying passage and a second feed passage for conducting the sheet material delivered from the second feed means to the conveying passage;

• wherein
• at least a greater portion of one side of the first feed passage is defined by a first opening-closing member and at least a greater portion of its other side is defined by one surface of a second opening-closing member,
• at least a greater portion of one side of the second feed passage is defined by the other surface of the second opening-closing member,
• the first opening-closing member is free to pivot between a closing position at which it defines one side of the first feed passage and an opening position at which it opens the first feed passage,
• the second opening-closing member is free to pivot between a closing position at which its one surface defines the other side of the first feed passage and its other surface defines the second feed passage and an opening position at which it opens the second feed passage, and
• the first and second opening-closing members are constructed such that when the second opening-closing member is not at the closing position, the first opening-closing member cannot substantially be held at the closing position.

An image-forming machine comprising a conveying passage for conveying a sheet material through a transfer zone, a first and a second feed means for feeding the sheet material to the conveying passage, a first feed passage for conducting the sheet material delivered from the first feed means to the conveying passage and a second feed passage for conducting the sheet material delivered from the second feed means to the conveying passage;

• wherein
• at least a greater portion of one side of the first feed passage is defined by a first opening-closing member and at least a greater portion of its other side is defined by one surface of a second opening-closing member,
• at least a greater portion of one side of the second feed passage is defined by the other surface of the second opening-closing member,
• the first opening-closing member is free to pivot between a closing position at which it defines one side of the first feed passage and an opening position at which it opens the first feed passage,
• the second opening-closing member is free to pivot between a closing position at which its one surface defines the other side of the first feed passage and its other surface defines the second feed passage and an opening position at which it opens the second feed passage,
• a first locking means for releasably locking the first opening-closing member into the closing position and a second locking means for releasably locking the second opening-closing means into the closing position are provided, and
• when the second opening-closing member is locked into the closing position by the second locking means and then the first opening-closing member is locked into the closing position by the first locking means, the first opening-closing member acts on part of the second locking means and thus, the second locking means cannot substantially be maintained in the lock-released state.

An image-forming machine comprising

• a conveying passage for conveying a sheet material through a transfer zone,
• a feed means for feeding the sheet material to the conveying passage wherein the feed means has a cassette-receiving section defined within the main body of the machine, a cassette having
• sheet material placed therein and adapted to be detachably loaded into the cassette-receiving section and
• a feed roller disposed above the cassette-receiving section,
• and a feed passage for conducting the sheet material delivered from the feed means to the conveying passage, a guide surface defining one side of the feed passage extending curvingly upwardly from the feed means toward the conveying passage wherein an introduction protrusion is provided at the central part in the widthwise direction of the upstream end of the guide surface, and projects slightly into the cassette-receiving section and its projecting end surface defines nearly the same surface as the inside surface of the front wall of the cassette loaded into the cassette-receiving section. into the cassette-receiving section.

An image-forming machine comprising a conveying passage for conveying a sheet material through a transfer zone, a feed means for feeding the sheet material to the conveying passage and a feed passage for conducting the sheet material delivered from the feed means to the conveying massage;

• wherein
• at least a greater portion of one side of the feed passage is defined by an opening-closing member which is free to pivot between a closing position at which it defines the feed passage and an opening position at which it opens the feed passage,
• the opening-closing member is free to move between an operating position at which it is at a predetermined position in the main body of the machine and a removed position removed from the operating position,
• a locking means is provided for releasably locking the opening-closing member into the closing position while is it held at the operating position, and
• a biasing spring for biasing the opening-closing member toward the opening position is disposed and acts as a supporting guide when the opening-closing member is moved between the operating position and the removed position.