Sheet feeding apparatus

A sheet feeding apparatus comprising:

• first rotary means including a feed rotary member and a separating rotary member and adapted for separating and feeding sheet materials one by one;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet materials;
• and
• a control means for rotating said feed rotary member in the sheet feeding direction and said separating rotary member in a sheet returning direction and for stopping said second rotary means, during the separating and feeding of the sheet material, and for rotating said second rotary means in the sheet feeding direction after the separating and feeding of the sheet materials is finished, and for rotating said separating rotary member in the sheet feeding direction for a predetermined time at the beginning of the rotation of said second rotary means in the sheet feeding direction.

A sheet feeding apparatus comprising:

• first rotary means for feeding a sheet material;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet material;
• a driving source for rotating said first and second rotary means;
• transmitting means adapted to be engaged to rotate said first rotary means in the sheet feeding direction and to rotate said second rotary means in a sheet returning direction, when said driving source is rotated in one direction, and adapted to be disengaged to stop said first rotary means and engaged to rotate said second rotary means in the sheet feeding direction, when said driving source is rotated in the other direction;
• and
• prohibiting means for preventing rotation of said first rotary means in a sheet returning direction at the start of rotation of said driving source in said the other direction.

A sheet feeding apparatus comprising:

• first rotary means including a feed rotary member and separating rotary member and adapted for separating and feeding sheet materials one by one;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet materials;
• and
• rotation control means for rotating said feed rotary member in the sheet feeding direction and said separating rotary member in a sheet returning direction and for rotating said second rotary means reversely, during the separating and feeding of the sheet materials, and for rotating said second rotary means in the sheet feeding direction after the separating and feeding of the sheet materials is finished, and for rotating said separating rotary member in the sheet feeding direction for a predetermined time at the beginning of the rotation of said second rotary means in the sheet feeding direction.

An image reading apparatus comprising:

• first rotary means for feeding a sheet material,
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet material,
• reading means for reading an image on the sheet fed from said second rotary means;
• a driving source for rotating said first and second rotary means;
• transmitting means adapted to be engaged to rotate said first rotary means in the sheet feeding direction and to be disengaged to stop said second rotary means, when said driving source is rotated in one direction, and adapted to be disengaged to stop said first rotary means and to be engaged to rotate said second rotary means in the sheet feeding direction, when said driving source is rotated in the other direction;
• and
• prohibiting means for preventing rotation of said first rotary means in a sheet returning direction at the start of rotation of said driving source in the other direction.

An image reading apparatus comprising:

• first rotary means including a feed rotary member and a separating rotary member and adapted for separating and feeding sheet materials one by one;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet material;
• reading means for reading an image on the sheet fed from said second rotary means;
• and
• control means for rotating said feed rotary member in the sheet feeding direction and said separating rotary member in a sheet returning direction and for stopping said second rotary means, during the separating and feeding of the sheet material, and for rotating said second rotary means in the sheet material, and for rotating said second rotary means in the sheet feeding direction after the separating and feeding of the sheet materials is finished, and for rotating said separating rotary member in the sheet feeding direction for a predetermined time at the beginning of the rotation of said second rotary means in the sheet feeding direction.

An image reading apparatus comprising:

• first rotary means for feeding a sheet material;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet material;
• reading means for reading an image on the sheet fed from said second rotary means;
• a driving source for rotating said first and second rotary means;
• transmitting means adapted to be engaged to rotate said first rotary means in the sheet feeding direction and to rotate said second rotary means in a sheet returning direction, when said driving source is rotated in one direction, and adapted to be disengaged to stop said first rotary means and engaged to rotate said second rotary means in the sheet feeding direction, when said driving source is rotated in the other direction;
• and
• prohibiting means for preventing rotation of said first rotary means in a sheet returning direction at the start of rotation of said driving source in said the other direction.

An image reading apparatus comprising:

• first rotary means including a feed rotary member and a separating rotary member and adapted for separating and feeding sheet materials one by one;
• second rotary means arranged at a downstream side of said first rotary means in a sheet feeding direction, for further feeding the sheet material;
• reading means for reading an image on the sheet fed from said second rotary means;
• and
• rotation control means for rotating said feed rotary member in the sheet feeding direction and said separating rotary member in a sheet returning direction and for rotating said second rotary means reversely, during the separating and feeding of the sheet materials, and for rotating said second rotary means in the sheet feeding direction after the separating and feeding of the sheet materials is finished, and for rotating said separating rotary member in the sheet feeding direction for a predetermined time at the beginning of the rotation of said second rotary means in the sheet feeding direction.