| 摘要 |
<p>PURPOSE:To obtain high-speed feeding by providing driving rollers at a vertically movable suction port to attract a loaded sheet on the basis of suction force for moving the suction port only vertically and disusing the movement to the right and left or forward and backward. CONSTITUTION:For operation, when a copy button is on to start feeding, at first, a suction port 4 beging to come down. Then, when the suction port 4 comes near to the top face of a loaded sheet in a cassette 7, a fan 12 is started, and a suction force is generated at the suction port 4 to attract the uppermost sheet S. Subsequently, the suction port 4 is brought up, and stopped as it reaches to a fixed position. Simultaneously, feeding rollers 5 are started to rotate as arrows show, and the sheet S is conveyed toward rollers 8 by the rotation of rollers 5 as it is attracted to the suction port 4. Thereafter, the sheet S is fed to a photosensitive drum 20 from between rollers 8.</p> |
