Electrospinning apparatus and method for producing fiber assembly

An electrospinning apparatus for depositing fibers on a target having first and second surfaces opposed to each other, the electrospinning apparatus comprising:

• a discharger that discharges a material solution of the fibers towards the first surface of the target;
• a collector electrode containing a base portion and a top portion opposed to the discharger;
• a holder that holds the target between the discharger and the collector electrode so that the first surface of the target is opposed to the discharger;
• a power supply that applies a voltage between the discharger and the collector electrode;
• a shift regulator that shifts the holder in a direction parallel to the first surface of the target;
• a distance regulator that regulates a target distance between the top portion of the collector electrode and the second surface of the target;
• and
• a controller that controls the shift regulator and the distance regulator to produce a fiber assembly having a given deposited condition on the first surface of the target.